| Entries |
| Document | Title | Date |
|---|
| 20080267626 | SYSTEM, APPARATUS AND METHOD FOR CONTROLLING MULTICAST FLOW IN PASSIVE OPTICAL NETWORK - The present invention discloses a method for controlling multicast flow in passive optical network includes: receiving multicast data from the optical line terminal, determining whether the received multicast data satisfies a multicast right control condition, transmitting the multicast data to the user side if the received multicast data satisfies the multicast right control condition, or discarding the multicast data if the received multicast data does not satisfy the multicast right control condition. The present invention also discloses an optical network terminal, an optical line terminal, and a system consisting of an optical network terminal and an optical line terminal and an optical distribute network, which implement the above mentioned method. The present invention could prevent the optical network terminal from receiving illegal multicast data and enhance the multicast security of the whole passive optical network system. | 10-30-2008 |
| 20090028564 | Dual Broadcast and Narrowcast Systems and Methods - Various embodiments of dual broadcast and narrowcast systems and methods are disclosed. One method embodiment, among others, comprises the steps of receiving optical narrowcast signals and converting the optical narrowcast signals to a radio frequency (RF) domain at a first photodiode, receiving optical broadcast signals and converting the optical broadcast signals to the radio frequency (RF) domain at a second photodiode, and combining the RF domain narrowcast and broadcast signals for transmission over a medium. | 01-29-2009 |
| 20090041459 | Optical fan-out and broadcast interconnect methodology - Methods are described for an optical fan-out and broadcast interconnect. A method includes operating an optical fan-out and broadcast interconnect including: fanning-out an optical signal from an optical signal emitter, of one of a plurality of nodes, with a diverging element of one of a plurality of optics; and broadcasting the optical signal to one of a plurality of receivers of all of the plurality of nodes with a light collecting and focusing element of all of the plurality of optics, wherein the plurality of optics are positioned to define an optics array, the plurality of receivers are positioned to define a receiver array that corresponds to the optics array and the plurality of nodes are positioned to define a node array that substantially corresponds to the receiver array and the optics array. | 02-12-2009 |
| 20090060509 | CUSTOMER PREMISES OPTICAL NETWORK UNIT AND OPTICAL TRANSMISSION SYSTEM - A customer premises optical network unit (ONU) comprises: an electrical/optical transform unit | 03-05-2009 |
| 20090110399 | STORAGE SYSTEM AND OPTICAL MODULE SWITCHING METHOD FOR STORAGE SYSTEM - An object of the present invention is to continue to send and receive to/from a host when a failure has occurred in a storage device interface. A storage system includes a host and a storage device connected to the host via a communication line, wherein the storage device comprises a communication controller performing data communication with the host by using optical modules, and wherein the communication controller is provided with first optical modules performing data communication with the host; a second optical module performing data communication with the host, in place of a first optical module; and a controller switching, when a failure has occurred in any of the first optical modules, the first optical module in which the failure has occurred to the second optical module. | 04-30-2009 |
| 20090162064 | NETWORK SYSTEM AND OPTICAL LINE TERMINAL - It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized with high accuracy between plural systems. A reference clock is provided from an external device or a representative OLT to the entire systems to perform clock synchronization between plural systems, so that the overall systems are synchronized by synchronizing each OLT with the reference clock. A hierarchical management method is selected that manages ONUs under the control of each OLT by managing band use information arranged for each OLT with respect to an external device or a representative OLT for sharing of bandwidth use conditions between plural systems. | 06-25-2009 |
| 20090162065 | NETWORK SYSTEM AND OPTICAL LINE TERMINAL - It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized with high accuracy between plural systems. A reference clock is provided from an external device or a representative OLT to the entire systems to perform clock synchronization between plural systems, so that the overall systems are synchronized by synchronizing each OLT with the reference clock. A hierarchical management method is selected that manages ONUs under the control of each OLT by managing band use information arranged for each OLT with respect to an external device or a representative OLT for sharing of bandwidth use conditions between plural systems. | 06-25-2009 |
| 20090214211 | APPARATUS OF ADJUSTING OPTICAL SIGNAL TRANSMISSION TIMING - In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical Line Terminal) which can impartially and effectively transmit light reception data to each ONU (Optical Network Unit). According to a light reception amplitude received by each ONU, an inter-frame gap of an appropriate length is assigned for each ONU. The OLT includes a unit for measuring and accumulating the reception light amplitude and data on the inter-frame gap of an appropriate length decided in advance according to the characteristic of the light reception device and generates a grant value for assuring an inter-frame gap of an appropriate length by using the both information. | 08-27-2009 |
| 20090232501 | Adaptive Injection Current Controlled Burst Mode SOA for Long and Wide Reach High Speed PON - An apparatus comprising an optical power splitter, an optical delay line coupled to the optical power splitter, an optical amplifier (OA) coupled to the optical delay line, and an adaptive injection current (AIC) controller coupled to the optical power splitter and the OA. Also disclosed is an apparatus comprising at least one component configured to implement a method comprising converting an optical signal into a voltage signal, calculating an amplitude correction value for the voltage signal, inverting an amplitude of the voltage signal, adjusting the amplitude of the inverted voltage signal according to the amplitude correction value, and converting the adjusted voltage signal into a current signal. Included is a network comprising an optical line terminal (OLT) comprising an optical receiver and an AIC controlled OA coupled to the optical receiver, wherein the AIC controlled OA provides optical power equalization for any upstream optical signals. | 09-17-2009 |
| 20090245792 | NETWORK SYSTEMS AND COMMUNICATIONS EQUIPMENT - A duplicate system includes an active side (0 side) and a standby side (1 side). An OLT includes an autodiscovery function which, when the OLT is active, determines the next starting time of autodiscovery procedure of the standby side and notifies the standby side of the above starting time, a table of management information that holds the line information of a partner with which the OLT forms the duplicate system and the next starting time of autodiscovery procedure of the OLT, and a function of switching active side that calculates a timing of switching active side. A function of receiving data from ONT in the OLT includes a function of detecting data sequence number and a function of detecting queue length. Moreover, a function of sending data of ONT includes a function of assigning sequence number and a function of discarding data. | 10-01-2009 |
| 20090263132 | METHOD OF INTRODUCING AN OUTSTATION INTO AN OPTICAL NETWORK AND OUTSTATION THEREFOR - The present invention relates to the introduction of an outstation into an optical network. The optical network has a central station, and a plurality of previously introduced outstations which are optically connected to the central station. The network is operable in: a normal operating state in which data traffic is received from previously introduced outstations at a normal data rate; and, a set-up state in which the transmission of data traffic from the previously introduced outstations is restricted relative to the normal state, the method including the step of: when the network is in the set-up state, performing a set-up operation for introducing the outstation into the optical network, the set-up operation involving the transmission of set-up data from the outstation being introduced, wherein the set-up data is transmitted at a reduced rate relative to the normal operating rate. | 10-22-2009 |
| 20090269063 | Method and apparatus for enabling activation of services via an Optical Network Terminal (ONT) - Cell phones or other wireless devices are becoming increasingly more accessible to customers, but cell phone features are primarily focused on communications services. A system employing an example embodiment activates services for an Optical Network Terminal (ONT) in the presence of wireless devices. In particular, the ONT responds to a ranging request from an Optical Line Terminal (OLT) with an ONT Identifier (ID) and an ID of a wireless device. If the ID of the wireless device is known, the ONT may enable activate a service, such as a security service for a homeowner. If the ID of the wireless device is unknown, the system may employ security measures, such as notifying the homeowner that a person with a wireless device having an unknown ID is on the premises. Thus, the example embodiment enables or disables premises security or other security based on the ID of the wireless device. | 10-29-2009 |
| 20090274461 | PON MULTICAST COMMUNICATION SYSTEM, MULTICAST MANAGEMENT METHOD, AND CORRESPONDING DEVICES - A Passive Optical Network (PON) multicast management method includes: an Optical Line Terminal (OLT) performs multicast control according to multicast control information, and generates a corresponding multicast downstream command; the OLT sends the multicast downstream command to an Optical Network Unit (ONU); and the ONU resolves the multicast downstream command, and performs multicast control according to the multicast downstream command. Accordingly, a PON multicast communication system, an OLT, and an ONU are disclosed. Through the multicast control mechanism introduced into the PON system, the PON multicast functions are enhanced, and the same data destined for multiple ONUs is prevented from being sent repeatedly in the network, and thus the network bandwidth resources are saved. | 11-05-2009 |
| 20090290875 | Broadband optical network apparatus and method - Methods and apparatus for providing enhanced optical networking service and performance which are particularly advantageous in terms of low cost and use of existing infrastructure, access control techniques, and components. In the exemplary embodiment, current widespread deployment and associated low cost of Ethernet-based systems are leveraged through use of an Ethernet CSMA/CD MAC in the optical domain on a passive optical network (PON) system. Additionally, local networking services are optionally provided to the network units on the PON since each local receiver can receive signals from all other users. An improved symmetric coupler arrangement provides the foregoing functionality at low cost. The improved system architecture also allows for fiber failure protection which is readily implemented at low cost and with minimal modification. | 11-26-2009 |
| 20100003029 | Optical fan-out and broadcast interconnect methodology - Methods are described for an optical fan-out and broadcast interconnect. A method includes operating an optical fan-out and broadcast interconnect including: fanning-out an optical signal from an optical signal emitter, of one of a plurality of nodes, with a diverging element of one of a plurality of optics; and broadcasting the optical signal to one of a plurality of receivers of all of the plurality of nodes with a light collecting and focusing element of all of the plurality of optics, wherein the plurality of optics are positioned to define an optics array, the plurality of receivers are positioned to define a receiver array that corresponds to the optics array and the plurality of nodes are positioned to define a node array that substantially corresponds to the receiver array and the optics array. | 01-07-2010 |
| 20100008668 | Secure upstream transmission in passive optical networks - A method and system for ensuring confidentiality of signal transmission in a point-to-multipoint data transmission network like Ethernet passive optical network, including at least one hub, at least one transmission medium and at least one station connected to the hub via the transmission medium. When an upstream signal is transmitted from a first station, the upstream signal is reflected by at least one disturbing reflector for producing a disturbing reflection. The disturbing reflection combines with a second reflection of the upstream signal and renders the second reflection undecodable by a second station. | 01-14-2010 |
| 20100008669 | HYBRID NETWORK OPTICAL COMMUNICATION SYSTEM - A hybrid network optical communication system is provided. The system may include a central office, at least one network group coupled to the central office. The network group may include a plurality of external rings, and each of the external rings may include a plurality of nodes having a ring connection. This system may have economical advantages of reducing the number of optical cores and easily switching directions for protecting the system when any problems occur on the optical cores and the devices at nodes. | 01-14-2010 |
| 20100014860 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication apparatus configured to transmit moving image data to a receiving apparatus via a network. The communication apparatus includes a coding unit configured to code the moving image data, a control information generation unit configured to determine a degree of importance of each packet of the moving image data coded by the coding unit and transmission quality of the network, and generate, for each packet, control information to control communication service quality according to the determined degree of importance and transmission quality, a packet generation unit configured to generate a packet based on the moving image data coded by the coding unit and the control information generated by the control information generation unit, and a communication control unit configured to transmit the packet generated by the packet generation unit. | 01-21-2010 |
| 20100080558 | Passive Optical Network System and Operating Method Thereof - The passive optical network includes a master station and slave stations connected via an optical fiber network including an optical splitter and a plurality of optical fibers. The master station includes a bandwidth control unit which decides a volume of a transmission signal to be granted to each slave station in every first period and in accordance with a request from the slave station, and a transmission timing control unit which decides, in one of a plurality of second periods and in accordance with the decided volume of the signal, transmission timing in which the slave station should transmit a signal. When the signal is to be transmitted by division over the plurality of second periods, the bandwidth control unit or the transmission timing control unit is controlled based on a volume of a signal to be attached by division processing, so that the granted signal can be transmitted in the first period. | 04-01-2010 |
| 20100104285 | Collecting Status From a Partner Management Domain - An apparatus comprising a Generic Status Portal (GSP) configured to grant access to a Managed Entity (ME) via an Optical Network Terminal (ONT) Management and Control Interface (OMCI), wherein the ME comprises status information about a non-OMCI management domain at the ONT. Also included is an apparatus comprising at least one processor configured to implement a method comprising initializing an ONT ME, adding status information associated with a managed function to the ONT ME, indicating a status information update of the ONT ME, and providing the status information via an OMCI. Included is a method comprising providing status and performance monitoring (PM) information from an ONT via an OMCI at the ONT, wherein the status and PM information is associated with at least one managed function instance of at least one non-OMCI domain. | 04-29-2010 |
| 20100104286 | OPTICAL ACCESS SYSTEM AND OPTICAL LINE TERMINAL - Provided is an optical access system comprising: an optical line terminal connected to another network; a plurality of optical network units, each connected to a user terminal; and at least one of an optical switching unit and an optical splitter, which is installed between the optical line terminal and the plurality of optical network units. The optical line terminal allocates a length of time to a discovery phase for detecting the plurality of optical network units, and a length of time to data transmission phases for transferring data from the plurality of optical network units; and changes a ratio of the length of time of the discovery phase to the length of time of the data transmission phases so that the length of time of the discovery phase is shortened in the case where a number of the optical network units that are registered in the optical line terminal increase. | 04-29-2010 |
| 20100119228 | METHOD, SYSTEM AND DEVICE FOR PROTECING LONG-REACH PASSIVE OPTICAL NETWORK - A method, system and device for protecting a Long Reach Passive Optical Network (LR-PON) system are provided. The Electrical Relay (E-R) device receives the optical signal transmitted on two fiber transmission paths by the Optical Line Terminal (OLT) or Optical Network Unit (ONU) on one side, performs optical-to-electrical (O/E) conversion, signal regeneration, and electrical-to-optical (E/O) conversion for the optical signal, and sends the signal to the ONU or the OLT on the other side through the two fiber transmission paths. Through backup of the fiber transmission path, an LR-PON system protection method is provided to improve the reliability of the LR-PON system. The method, system, and device for protecting the LR-PON system under the present invention all support and are compatible with the existing functions of all devices in the existing LR-PON system. | 05-13-2010 |
| 20100150556 | SYSTEM AND METHOD FOR A SUBSCRIBER POWERED NETWORK ELEMENT - A system for powering a network element of a fiber optic wide area network is disclosed. When communication data is transferred between a central office (CO) and a subscriber terminal using a network element to convert optical to electrical (O-E) and electrical to optical (E-O) signals between a fiber from the central office and twisted wire pair, coaxial cable or Ethernet cable transmission lines from the subscriber terminal, techniques related to local powering of a network element or drop site by the subscriber terminal or subscriber premise remote powering device are provided. Certain advantages and/or benefits are achieved using the present invention, such as freedom from any requirement for additional meter installations or meter connection charges and does not require a separate power network. | 06-17-2010 |
| 20100172647 | Field Framing With Built-In Information - An apparatus comprising a frame alignment processor coupled to a receiver, wherein the frame alignment processor is configured to align a first frame and a second frame in the receiver by matching a first synchronization (sync) pattern predicted using a first sync field in the first frame with a second sync pattern obtained from a second sync field in the second frame. Included is an apparatus comprising at least one component configured to implement a method comprising receiving a first frame, subsequently receiving a second frame that was transmitted after the first frame, predicting a first sync pattern from a first sync field in the first frame, obtaining a second sync pattern from a second sync field in the second frame, and determining that the first frame and the second frame are aligned when the first sync pattern matches the second sync pattern. | 07-08-2010 |
| 20100183304 | DYNAMIC BANDWIDTH ALLOCATION IN A PASSIVE OPTICAL NETWORK IN WHICH DIFFERENT OPTICAL NETWORK UNITS TRANSMIT AT DIFFERENT RATES - An OLT allocates a bandwidth budget and assigns upstream transmission order by receiving upstream transmission requests from a plurality of ONUs. Each ONU's request includes a requested guaranteed bandwidth and a requested best effort bandwidth. Each ONU has respective first and second attribute values. One attribute is given allocation priority over the other attribute. One attribute is given scheduling priority over the other attribute. Within each attribute, an allocation rank and a transmission rank is assigned to the possible attribute values. The bandwidth budget is allocated in accordance with the allocation priority and ranks. The upstream transmissions are scheduled in accordance with the scheduling priority and ranks. | 07-22-2010 |
| 20100209107 | METHOD AND DEVICE FOR MULTIPLEXING AND MAPPING SERVICES TO AN OTU - A method for multiplexing and mapping services to an Optical channel Transport Unit (OTU) includes: filling the service data into a container block covering an Optical channel Payload Unit (OPU) area container having at least one frame. The container block includes at least one OPU area container having a frame. The OPU area container is composed of at least one OPU area sub-timeslot, and is configured to fill the service clock information into the Optical Channel Payload Unit Overload (OPU OH) area. A device for multiplexing and mapping services to an OTU is provided in an embodiment of the present invention. | 08-19-2010 |
| 20100226648 | FRAME GENERATING APPARATUS AND FRAME GENERATING METHOD - A frame generating apparatus accommodating a client signal in an optical data transfer unit frame with a higher bit rate than the client signal includes a deserializer, a plurality of generic mapping procedure circuits, and a serializer. The deserializer deserializes the client signal into parallel signals, the number of parallel signals corresponding to the number of tributary slots used in the optical data transfer unit frame. The plurality of generic mapping procedure circuits inserts data and stuff into a frame accommodating portion of the optical data transfer unit frame based on a difference in the bit rate between the client signal and the optical data transfer unit frame. The serializer serializes the parallel signals output from the plurality of generic mapping procedure circuits. | 09-09-2010 |
| 20100239255 | OPTICAL LINE TERMINAL, PASSIVE OPTICAL NETWORK SYSTEM, AND BANDWIDTH ASSIGNMENT METHOD - An OLT of a station-side device in a PON system, the OLT including: an MPCP control unit for receiving bandwidth requirements from each of a plurality of ONUs of home-side devices; a bandwidth assignment period calculation unit for calculating the following bandwidth assignment period for each request source based on the received bandwidth requirements for each request source; a dynamic bandwidth assignment calculation unit for calculating the following bandwidth assignment for each request source based on the received bandwidth requirements for each request source; and the MPCP control unit for transmitting transmission allowance based on the calculated bandwidth assignment to each of the plurality of ONUs. | 09-23-2010 |
| 20100239256 | DATA TRANSMISSION METHOD OF OPTICAL ACCESS NETWORK, AND SYSTEM AND DEVICE THEREOF - An optical access network (OAN) system is provided. In the system, a remote radio unit (RRU) receives and sends a wireless signal and implement conversion between the wireless signal and a first frequency signal; an optical network device receives and sends the wireless signal, and implement conversion between the wireless signal and the first frequency signal and conversion between the first frequency signal and a fiber transmission signal; an optical distribution network (ODN) connected to the optical network device transmits the fiber transmission signal; an optical line terminal (OLT) device receives and sends the fiber transmission signal, and implements conversion between the fiber transmission signal and a second frequency signal, conversion between the second frequency signal and a base band signal, and conversion between the base band signal and a signal of another standard protocol. | 09-23-2010 |
| 20100290783 | PASSIVE OPTICAL NETWORK SYSTEM AND OPERATION METHOD THEREOF - A master station includes an optical transmission interface for transmitting signals to a plurality of slave stations at a first transfer rate or a second transfer rate which is higher than the first one, packet buffers for accumulating the signals addressed to each of the plurality of slave stations, and a control unit for determining transmission timings and transfer rates of the signals on the basis of an amount of the signals accumulated in the packet buffers, transmitting the signals with the determined timings and rates, and notifying each of the slave stations about the determined timings and rates. Each of the slave stations includes an optical reception interface for receiving the signals of the first transfer rate or the second transfer rate, and a control unit for controlling the optical reception interface on the basis of the timings and rates which the slave stations is notified. | 11-18-2010 |
| 20100290784 | COMMUNICATION CONTROL METHOD, STATION SIDE DEVICE, SUBSCRIBER SIDE DEVICE, AND COMMUNICATION SYSTEM - A communication control method performing Discovery processing, which is a procedure at an OLT to detect an ONU newly connected, in a PON system, the method includes: a transmission-permission-signal transmitting step of transmitting, by the OLT, a transmission permission signal for discovery, which includes an individual number of an ONU that is permitted to respond and mask information for designating a match-detection target bit for the individual number; and a registration-request-signal transmitting step of comparing, by an ONU, which is not registered in the OLT, a match-detection target bit for the individual number designated in the mask information with an individual number of the ONU based on a received transmission permission signal, and when the target bit and the individual number match each other, transmitting a registration request signal to the OLT. | 11-18-2010 |
| 20110044690 | SYSTEM OF DEVICES OF WHICH SOME INCLUDE AN INFARED REMOTE CONTROL INTERFACE - Infrared control signals are communicated between an infrared remote control unit ( | 02-24-2011 |
| 20110058812 | Optically Enabled Broadcast Bus - Embodiments of the present invention are directed to optical multiprocessing buses. In one embodiment, an optical broadcast bus includes a repeater, a fan-in bus optically coupled to a number of nodes and the repeater, and a fan-out bus optically coupled to the nodes and the repeater. The fan-in bus is configured to receive optical signals from each node and transmit the optical signals to the repeater, which regenerates the optical signals. The fan-out bus is configured to receive the regenerated optical signals output from the repeater and distribute the regenerated optical signals to the nodes. The repeater can also serve as an arbiter by granting one node at a time access to the fan-in bus. | 03-10-2011 |
| 20110076022 | Optical communications network, power supply controlling method, station-side equipment, subscriber-side equipment, and semiconductor chip - An optical communications network that is composed of one station-side equipment being connected to plural subscriber-side equipments. The station-side equipment refers to downstream data signals and prepares transmission plans, and generates downstream control signals that include the transmission plans, and converts downstream signals, that include the downstream data signals and the downstream control signals to which identifiers indicating the subscriber-side equipments that are addressees are assigned, into downstream optical signals, and sends the downstream optical signals out toward the subscriber-side equipments. The subscriber-side equipment converts downstream optical signals into downstream electric signals, and refers to identifiers and extracts downstream electric signals addressed to itself, and reads the transmission plans, and generates timer control signals including information of receiving start times and receiving stop times, and, on the basis of the timer control signals, opens and closes a path connecting a receiving section and an electricity supply section. | 03-31-2011 |
| 20110091212 | PACKET TRANSFER DEVICE - An optical multi-drop path is set to a downstream direction, an optical path between adjacent nodes is set to a upstream direction, a packet sorting unit is provided for appropriately controlling packet streams in the downstream direction and upstream direction, and one-to-one or one-to-N communication can be performed not only between servers and clients but also between the clients even when a multi-drop transmission is used in the downstream direction. | 04-21-2011 |
| 20110123196 | METHOD, DEVICE AND SYSTEM FOR SENDING AND RECEIVING CLIENT SIGNALS - A method, a device and a system for sending and receiving client signals are provided. The method for sending includes: distributing, in round-robin mode, OTU data frames into which client signals are encapsulated to VLs, in which the number of the VLs is a common multiple of the number of lanes of an OTN encapsulating module adaptation interface and the number of optical module adaptation lanes; inserting VL alignment identifiers that carry VL serial numbers and position information to the VLs, in which the VL alignment identifiers are adapted to compensate a transmission rate difference among the VLs; distributing, in bit-by-bit interleaving mode, the data on the VLs with the inserted VL alignment identifiers onto the OTN encapsulating module adaptation interface; converting data on the OTN encapsulating module adaptation interface by bit onto optical module adaptation lanes; modulating data on the optical module adaptation lanes and transmitting the modulated data onto an optical fiber for transmission, so as to compensate a transmission rate difference among different data lines caused by OTN long-distance transmission. | 05-26-2011 |
| 20110129225 | Optical Polymorphic Computer Systems - Embodiments of the present invention are directed to high-bandwidth, low-latency optical fabrics for broadcasting between nodes. In one embodiment, an optical fabric includes an optical communication path optically coupled to a broadcasting node and optically coupled to one or more broadcast receiving nodes. The optical fabric also includes a first optical element optically coupled to the optical communication path and configured to broadcast an optical signal generated by the broadcasting nodes onto the optical communication path, and one or more optical elements optically coupled to the optical communication path and configured to divert a portion the broadcast optical signal onto each of the one or more receiving nodes. | 06-02-2011 |
| 20110129226 | OPTICAL FIBRE NETWORKS - An optical fibre transmission distribution assembly, wherein the assembly comprises at least a first splitter having a first split ratio of 1:x (where x is an integer) connected to optical drop cables leading to subscribers, and at least a second splitter having a second split ratio of 1:y (where y is an integer and is different from x), and transfer means whereby an optical drop cable connected to the first splitter can be transferred to receive split optical signals from the second splitter, thereby enabling the signal in the transferred drop cable to be further split by addition of a third splitter at a ratio of 1:p (where p is an integer), to provide p subscriber connection points each having a 1:p*y split ratio at the subscriber end of the transferred drop cable. | 06-02-2011 |
| 20110158649 | INTEGRATING PLURALITY OF BUILDING MANAGEMENT SERVICES AND HOME AUTOMATION SERVICES WITH PLURALITY OF MULTI - PLAY SERVICES ON NEUTRAL ACCESS NETWORK OPERATIONS BASIS - A multi play single fiber system is described. The system comprises a single fibre for provisioning one or more of Global System of Mobile (GSM) Communication, Code Division Multiple Access (CDMA), Worldwide Interoperability for Microwave Access (Wimax), Global Positioning System (GPS) based services implemented on one or more of: Asynchronous Transfer Mode (ATM), Time-Division Multiplexing (TDM), Transmission Control Protocol-Internet Protocol (TCP-IP), Radio Frequency (RF), Wavelength Division Multiplexing (WDM) or Dense Wavelength Division Multiplexing (SWDM) and a hardware coupled computer programmable device coupled with the single fiber to create plurality of tunnels within the said single fiber and create plurality of circuits within the said tunnels. | 06-30-2011 |
| 20110164877 | METHOD, DEVICE, AND SYSTEM FOR TRANSMITTING CONSTANT RATE DATA STREAM - In the field of optical network communication technologies, a method, a device, and a system for transmitting a constant rate data stream are provided. The method for transmitting the constant rate data stream by the first network device includes: receiving a constant rate data stream; calculating an input rate of the constant rate data stream or a rate difference between the input rate and a standard rate of the constant rate data stream in each cycle of a reference clock; encapsulating the constant rate data stream into a Gigabit-Passive Optical Network (GPON) Encapsulation Method (GEM) frame by using a bit as a minimum encapsulation unit; and encapsulating the GEM frame into a GPON Transmission Convergence Layer (GTC) frame, and sending the GTC frame to the second network device through a GPON network. Therefore, the technical solutions may be widely applied to the GPON network. | 07-07-2011 |
| 20110170871 | APPARATUS OF ADJUSTING OPTICAL SIGNAL TRANSMISSION TIMING - In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical Line Terminal) which can impartially and effectively transmit light reception data to each ONU (Optical Network Unit). According to a light reception amplitude received by each ONU, an inter-frame gap of an appropriate length is assigned for each ONU. The OLT includes a unit for measuring and accumulating the reception light amplitude and data on the inter-frame gap of an appropriate length decided in advance according to the characteristic of the light reception device and generates a grant value for assuring an inter-frame gap of an appropriate length by using the both information. | 07-14-2011 |
| 20110188858 | OPTICAL BACKHAUL NETWORK FOR WIRELESS BROADBAND SERVICE - An optical backhaul network for a wireless broadband service is provided. The optical backhaul network for a wireless broadband service includes: a plurality of optical network units for outputting an uplink optical signal having a multiplexed wavelength; an optical line termination for outputting a downlink optical signal of a single mode in order to transmit the downlink optical signal to the plurality of the optical network units in a broadcasting form; and a plurality of remote nodes for outputting a part of the downlink optical signal to the plurality of the optical network units and for outputting the uplink optical signal to the optical line termination. Therefore, one center and a plurality of access points can be efficiently connected. | 08-04-2011 |
| 20110236020 | LOW COST HIGH BIT RATE TRANSCEIVING TECHNIQUE FOR OPTICAL NETWORKS - Technique for low cost delivery of a high bit rate electric signal via an optical network, by using a group of optical channels in the network for respectively delivering there-through a number of component electric signals of the high bit rate signal, The optical channels are respectively associated with different wavelengths, and each of the optical channels comprises optical elements suitable for conducting an optical signal having bandwidth significantly narrower than bandwidth of any of the component signals. The high bit rate electric signal is then successively restored from the optical signals delivered via the optical channels. | 09-29-2011 |
| 20110249972 | FRAME TRANSMISSION METHOD - An apparatus for decreasing the hardware load from L2 switch MAC address learning for Ethernet-Over-SONET technology that uses VLAN, simplifying frame transmission between Ethernet and SONET, and improving the reliability of each device is disclosed. An Ethernet frame and SONET frame convertible interface part establishes a register that holds an Ethernet frame specific VLANID and SONET frame specific STS path ID in opposition, and a multiplexing part that multiplexes an Ethernet frame having a specific VLANID corresponding to a specific STS path ID that is held by a register among an input plurality of Ethernet frame VLAN ID's. | 10-13-2011 |
| 20110262138 | Method and Device for Processing Broadcast Packets/Multicast Control Messages - The present invention discloses a method for processing broadcast packets/multicast control messages, comprising: replicating data to different broadcast/multicast logical channels in accordance with ONU types of users who join a VLAN when an OLT, on which a same port is connected to different types of ONUs, transmits the downlink broadcast packets/multicast control messages. The present invention also discloses a device for processing broadcast packets/multicast control messages. In accordance with the present invention, efficient processing of downlink broadcast packets and multicast control messages is realized when different types of ONUs coexist, unnecessary interference with ONUs from excessive data is avoided, and meanwhile the bandwidth between an OLT and an ONU can be utilized efficiently and meaningless bandwidth occupation by data streams can be avoided. | 10-27-2011 |
| 20110262139 | METHOD FOR LOCALIZING AN OPTICAL TERMINATION DEVICE IN A PASSIVE OPTICAL NETWORK - A method for localizing an optical network termination (ONT) of a passive optical network is disclosed. The passive optical network comprises an optical line terminal (OLT) and an optical distribution network (ODN) having a plurality of optical links. The ONT is connectable to the OLT by a given optical link of the optical distribution network. The method includes the steps of detecting that the ONT has been connected to the OLT by an optical link of the optical distribution network; determining length information indicative of a length of the optical link; comparing the length information with a reference length information indicative of a length of the given optical link; and if the length information matches the reference length information, localizing the ONT by confirming that it is connected to the OLT by the given optical link. | 10-27-2011 |
| 20110280576 | Optical power distribution system - A system for delivering optical power over optical conduits includes more than one optical power source and an optical power distribution node configured for selectively delivering optical power to multiple optical power sinks. | 11-17-2011 |
| 20110293277 | RECONFIGURABLE MULTI-ZONED FIBER OPTIC NETWORK ARCHITECTURE HAVING FIBER OPTIC DEVICES - A fiber optic network having one or more zones is disclosed. Each zone of the fiber optic network includes one or more zone terminals or devices. Such zone terminals or devices may be located at a mid-span access point of a distribution cable optically connected to a service provider's feeder cable. The zone terminal has a plurality of connector ports with at least one adapter positioned within one of the plurality of connector ports. The adapter is configured to establish an optical connection with one or more optical fibers of the distribution cable. The second multi-fiber optical connector is suitable for outside-plant installation, and the terminal is configured to extend optical service from a service provider toward at least one subscriber premises in a zone. The fiber optic terminal is reconfigurable based on at least one of, a number of subscriber premises in the zone, a geographical relationship of the subscriber premises in the zone, and a demographic make-up of the subscriber premises in the zone. | 12-01-2011 |
| 20110305458 | METHOD AND DEVICE FOR SERVICE ADAPTATION - A service adaptation device includes: a service access unit, configured to obtain service data, where the service data includes a Gigabit-Passive Optical Network (GPON) Encapsulation Method (GEM) frame, Time Division Multiplex (TDM) service data, and Ethernet (ETH) service data; and an Enhanced GPON Encapsulation Method (E-GEM) adaptation unit, configured to encapsulate the service data obtained by the service access unit into an E-GEM frame. A service adaptation method includes: obtaining service data, where the service data includes a GEM frame, TDM service data, and ETH service data; and encapsulating the obtained service data into an E-GEM frame. | 12-15-2011 |
| 20110318008 | OPTICAL LINE TERMINAL AND OPTICAL NETWORK UNIT - An optical line terminal which includes an observing unit that observes information of any one or all of an arrival interval of frames, an instantaneous bandwidth under use of a flow, a queue length of a queue temporarily storing the frames, and a traffic type, and a stop determining unit that dynamically determines a sleep time to be a period in which a sleep state where partial functions of the ONU are stopped is maintained, on the basis of the information obtained by the observing unit. The ONU is entered into a sleep state, immediately after communication ends, after a predetermined waiting time passes from when the communication ends, or after a waiting time determined on the basis of the information passes from when the communication ends. | 12-29-2011 |
| 20120002966 | TECHNOLOGY FOR SIMULATING AND/OR CONTROLLING COMMUNICATION OPTICAL NETWORKS - A technique for controlling power of a network node in an optical mesh network, comprising: determining a number of optical paths ingressing or expected to ingress the node, determining capacity or expected capacity of each of the paths; calculating for each of the paths a virtual input power P | 01-05-2012 |
| 20120008953 | METHOD AND SYSTEM FOR TRANSMITTING TIME IN PASSIVE OPTICAL NETWORK - The present invention discloses a method and system for accurate time transfer in PON. An Optical Line Terminal (OLT) ranges Optical Network Units (ONUs) and obtains ranging information, then, triggered by the periodic Pulse per n Second (PPnS), generates a PPnS timestamp based on the local reference counter and the Time of Day (TOD) above second; OLT transmits the ranging information, the periodic PPnS timestamp and TOD to ONUs; ONUs predicts the time of the next second according to said periodic PPnS timestamp, TOD and ranging information, and outputs the corresponding PPnS. The invention is characterized by the combination of the features of PON point to multi-point and PON ranging into its time transfer method, the high accuracy of time transfer, and the low hardware costs for OLT and ONU, as well as the extremely small bandwidth occupancy. | 01-12-2012 |
| 20120027411 | PASSIVE OPTICAL NETWORK USER TERMINAL AND METHOD OF POWER SUPPLY CONTROL AND POWER SUPPLY STATE REPORTING FOR THE SAME - The present disclosure discloses a passive optical network (PON) user terminal comprising a passive optical network interface unit (PONIU) having access to a PON system, a service data distribution unit (SDDU) connected to the PONIU for distributing service data, a plurality of service processing units (SPUs) for receiving and accordingly processing the service data distributed by the SDDU, a power source for providing power to the above units, and a power supply control unit (PSCU) for controlling the activating/deactivating of the energy-saving power supply to the SPUs, the SDDU, and the PONIU. The present disclosure further provides a method for controlling the PON power supply and for reporting the power supply state. The present disclosure allows control of the energy usage of the PON user terminal to save power when a service in the PON user terminal is not used or when the user terminal uses a backup power source to supply power. | 02-02-2012 |
| 20120039608 | Optical Signal Multiplexer Card Having Front Panel Access to Electrical and Optical Connectors for Use in Compact Enclosure for Optical Signal Multiplexer Cards - A reduced size multiplexer and, in particular, a reduced size optical signal multiplexer module is provided for use in a reduced size enclosure. The optical signal multiplexer module has electrical and optical connectors on its faceplate to provide ease in access without having to remove the optical signal multiplexer from the enclosure. The optical signal multiplexer circuit is configured in a standard Type 400 mechanics circuit board arrangement. The optical signal multiplexer module therefore can be inserted into an enclosure in a direction opposite to that in which the DS1 or DS3 connector projects from the face plate, so that the DS1 or DS3 connector remains freely accessible outside of the enclosure when the optical signal multiplexer module is fully loaded into the enclosure. DS1 and DS3 cables and optical fibers can thus be easily coupled to the DS1 and DS3 and optical connectors, respectively, when the SONET multiplexer circuit is fully loaded into the enclosure. | 02-16-2012 |
| 20120039609 | METHOD AND APPARATUS FOR TRANSPORTING CLIENT SIGNALS IN AN OPTICAL TRANSPORT NETWORK - Method and apparatus for transporting client signals in an OTN are illustrated. In one embodiment, the method includes: receiving a client signal; determining a quantity of n-bit data units of the client signal based on a clock of the client signal and a local clock; mapping the quantity of n-bit data units of the client signal to an overhead of a first Optical Channel Data Tributary Unit (ODTU) frame; mapping the n-bit data units of the client signal to a payload area of a second ODTU frame next to the first ODTU frame according to the quantity of n-bit data units mapped in the overhead of the first ODTU frame; mapping each n-bit data unit of the second ODTU frame to an Optical Channel Payload Unit-k Tributary Slot (OPUk TS) in an OPUk frame; and forming an Optical Channel Transport Unit-k (OTUk) frame including the OPUk frame for transmission. | 02-16-2012 |
| 20120045209 | Cost-Effective Multi-Rate Upstream for 10GEPON Based on High Efficiency Coding - Systems and methods are disclosed to provide an upstream rate between 1 Gbps and 10 Gbps in a cost effective manner in a 10GEPON. In an embodiment, an optical network unit (ONU) transmitter includes a burst transceiver and a physical layer (PHY) including a high performance digital to analog converter (DAC), a pulse amplitude modulation (PAM) module configured to encode end user data using a modulation scheme having more than two levels, and a laser. The ONU transmitter transmits the encoded end user data to an optical line terminal (OLT) receiver, which demodulates the data using a PAM demodulator and sends it to a service provider. | 02-23-2012 |
| 20120045210 | OPTICAL SUBSCRIBER NETWORK - An optical subscriber network for power reduction is provided. The optical subscriber network may include an Optical Line Terminal (OLT) and an Optical Network Terminal (ONT). The OLT may manage a plurality of ONTs by classifying the plurality of ONTs into a sleep group, and may multicast a sleep allowance message only to ONTs included in a predetermined sleep group. | 02-23-2012 |
| 20120045211 | SIGNAL TRANSMISSION PROCESSING METHOD AND APPARATUS AND DISTRIBUTED BASE STATION - A signal transmission processing method and apparatus and a distributed base station are provided according to the embodiments of the present invention. The distributed base station includes a Base Band Unit (BBU) and a Remote Radio Unit (RRU). A transmitting end connected to one of the BBU and the RRU receives at least one of interface signals from the one connected thereto, performs optical transport network (OTN) electrical layer multiplexing to obtain OTN signal frames and transmit optical signals including the OTN frames to a receiving end connected to the other of the BBU and the RRU. The receiving end performs frame processing for the OTN frames received from the transmitting end to obtain the interface signals, and transmit the interface signals to the other connected thereto. | 02-23-2012 |
| 20120087662 | PASSIVE OPTICAL NETWORK AND SUBSCRIBER LINE TERMINAL - The OLT manages information of optical intensity and communication bit rate receivable by each ONU, and transmits a signal at suitable optical intensity and a bit rate. The OLT decides a signal transmission plan for each ONU according to a status of accumulated information waiting to be transmitted in the OLT's own device buffer, and inserts the signal transmission plan in a header or payload of a downlink frame, thereby notifying the ONUs of the information prior to transmitting accumulated information (primary signal). The ONU recognizes the signal transmission plan of the OLT according to the time information in a downlink intensity map, receives only a signal having the optical intensity and bit rate suitable for the ONU's own device, and blocks other signals. | 04-12-2012 |
| 20120087663 | Subscriber Premises-Side Optical Network Unit | 04-12-2012 |
| 20120087664 | EFFICIENT MAC PROTOCOL FOR OFDMA PASSIVE OPTICAL NETWORKS (PONS) - Systems and methods are disclosed for providing media access control (MAC) in an optical network by providing a separate control channel and data channel; dedicating each optical network unit (ONU) with one control channel, wherein the control message is transmitted at any time without constraints; sending a grant message to an ONU just before an allocated time is about to start; and sending data traffic from the ONU immediately after receiving the grant message without synchronizing with an optical line terminal (OLT) clock. | 04-12-2012 |
| 20120093511 | NODE SEGMENTATION - Methods and systems for providing flexible node segmentation are provided. For example, the system can be configured to delay node segmentation in the headend/hub even though the fiber node has been segmented. When a desire for node segmentation in the headend/hub arises, the receiver can be efficiently upgraded through the use of a control signal to provide a receiver output port to each sub-service area. | 04-19-2012 |
| 20120093512 | METHOD OF MANAGING ONTS IN PON AND OLT FOR MANAGING THE SAME - A method of managing optical network terminals (ONTs) and an optical line terminal (OLT) for managing the ONTs are provided. A method of managing ONTs in an OLT includes receiving ONT type information in management information base (MIB) information of ONTs connected to the OLT from the ONTs; not uploading MIBs of other ONTs having the same type as the ONT when MIB upload data for the other ONTs is present in the OLT, and uploading the MIBs of the other ONTs having the same type as the ONT when the MIB upload data for the other ONTs is not present in the OLT; and driving an interface of the ONT. | 04-19-2012 |
| 20120093513 | METHOD AND APPARATUS FOR SYNCHRONIZATION IN A PASSIVE OPTICAL NETWORK - A method, apparatus and system for aligning frames in which an Optical Network Unit (ONU) receives a frame comprising frame delimitation information and synchronization-related information; performs a first verification based on a comparison of the frame delimitation information and a fixed pattern; performs a second verification based on a comparison of the synchronization-related information and a value associated with synchronization-related information in a previously received frame; proceeds to a synchronization state if both the first verification and the second verification are successful; and returns to a hunt state if either the first verification or the second verification fails. | 04-19-2012 |
| 20120099865 | OPTICAL ACCESS SYSTEM, STATION-SIDE TERMINATION APPARATUS, AND SUBSCRIBER-SIDE TERMINATION APPARATUS - In an optical access system, the OLT includes a CP inserting unit that inserts a CP into a downlink signal; a CP removing unit that removes a CP from an uplink signal received from the ONU; and an FFT unit, an EQ unit, and an inverse FFT unit that perform equalization on the uplink CP-removed signal according to a frequency domain equalization scheme based on an inverse characteristic of the characteristic of a transmission line leading to the ONU. The ONU includes a CP inserting unit; a CP removing unit; and an FFT unit, an EQ unit, and an inverse FFT unit that perform equalization on the downlink CP-removed signal according to the frequency domain equalization scheme based on an inverse characteristic of the prestored characteristic of the a transmission line leading to the OLT. | 04-26-2012 |
| 20120106963 | System, Method And Relevant Device For Signal Transmission - A system, a method and a related device for signal transmission are provided in order to improve utilization efficiency of the fiber. The system includes an optical line terminal (OLT), a plurality of optical network units (ONU), a base band unit (BBU), a plurality of remote radio units (RRU), a first signal-processing device and a plurality of second signal-processing devices, wherein the first signal-processing device sends a multiplexed signal to a plurality of second signal-processing devices after a plurality of signals sent by the OLT and the BBU are multiplexed, and demultiplexes a signal sent by the second signal-processing device in order to obtain a plurality of signals sent by the ONU and a plurality of different RRUs and sends these demultiplexed signals to the OLT and the BBU; one of a plurality of second signal processing devices sends a multiplexed signal to the first signal-processing device after a plurality of signals sent by the ONU and a plurality of different RRUs are multiplexed, and demultiplexes a signal sent by the first signal-processing device in order to obtain a signal sent by the OLT and a plurality of signals sent to a plurality of different RRUs by the BBU and sends these demultiplexed signals to the ONU and the RRUs. | 05-03-2012 |
| 20120121265 | Apparatus And Method For Two-Stage Optical Network - A manner of providing an energy-efficient two-stage PON using a multistage-PON repeater to forward data traffic and other communications between the first stage and the second stage. The multistage-PON repeater receives BI-PON transmission frames from and OLT and decimates them, forwarding data intended for end devices of the second stage. The multistage-PON repeater rate adapts the transmissions so that faster speeds may be associated with PON first stage communications and slower speeds are associated with PON second stage communications. Many though not all of the multistage-PON components are configured to operate at the slower clock speed, conserving energy. Upstream transmissions from the end devices of the second stage are buffered in the multistage-PON repeater and forwarded to the OLT according to an allocation schedule received from the OLT in a BI-PON frame. | 05-17-2012 |
| 20120141129 | SIGNAL TRANSMISSION METHOD FOR PEER-TO-PEER OPTICAL NETWORK AND SYSTEM THEREOF - A signal transmission system for a peer-to-peer optical network. The system includes an optical line terminal, an optical distribution node, and a plurality of optical network units. The optical network unit and the optical distribution node are connected in a tree distribution having an ordered relation. The optical line terminal transmits optic signals via the optical distribution node to a first ordered optical network unit, to allow the first ordered optical network unit to process the optic signals and to generate combined optic signals, which are transmitted to a next ordered optical network unit via the optical distribution node. The above steps are iterated, until a last ordered optical network unit transmits combined optic signals to the optical line terminal via the optical distribution node. | 06-07-2012 |
| 20120148249 | CABLE NETWORK USING GIGA BAND FREQUENCY - The present invention relates to a cable network using the frequency of a giga band. The optical signal transmission apparatus includes an optical transmission/reception unit converting received RF signals into RF optical signals and transmitting the RF optical signals, an optical line terminal converting received digital signals into digital optical signals and transmitting the digital optical signals, and a multiplexer receiving the optical signals from the optical transmission/reception unit and the optical line terminal and multiplexing the received optical signals. | 06-14-2012 |
| 20120155877 | Optical Network Terminal Management and Control Interface over Ethernet - An apparatus comprising a data framer configured to frame an external protocol extension message for transmission, the external protocol extension message comprising a header that indicates an external protocol extension and at least one type-length-value (TLV) comprising a type field, a length field, and a value field, wherein a format of the TLV is specified by a specific organization, and wherein the value field comprises information related to protocol functions external to the network. Also included is an apparatus comprising at least one component configured to implement a method comprising compiling an external protocol extension message comprising a plurality of TLVs and a header that indicates an external protocol extension, and transmitting the external protocol message. | 06-21-2012 |
| 20120219295 | OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION METHOD - An output control unit outputs data of bit rate A to a first header-attaching unit and data of bit rate B to a second header-attaching unit. An instructing unit instructs the first or the second header-attaching unit to attach a header of bit rate being the least bit rate to the data of bit rate A or B. The first header-attaching unit creates a header of bit rate A, including an ID of a destination ONU of the data of bit rate A and information concerning the data length, and attaches the header of bit rate A to the data of bit rate A. The second header-attaching unit creates a header of bit rate A, including an ID of the destination ONU of the data of bit rate B and information concerning the data length, and attaches the header of bit rate A to the data of bit rate B. | 08-30-2012 |
| 20120224853 | METHOD AND DEVICE FOR SENDING UPLINK BURST DATA IN PASSIVE OPTICAL NETWORK SYSTEM - A method for sending uplink burst data in a passive optical network (PON) system includes: sending a synchronization pattern of the uplink burst data, the synchronization pattern being of a length, which is an integer multiple of 66 bits, and being formed by connection of 66-bit unit gene blocks; sending a burst delimiter (BD) of the uplink burst data; sending a forward error correction (FEC)-protected data in the uplink burst data; and sending an end of burst (EOB) delimiter of the uplink burst data. The technical solutions in the embodiments allow the use of a less complex equalizer at the reception end of a high-speed PON system. | 09-06-2012 |
| 20120224854 | USE OF THE SAME SET OF WAVELENGTHS FOR UPLINK AND DOWNLINK SIGNAL TRANSMISSION - The present invention relates to the field of signal transmission using orthogonal optical frequency division multiplexing transceivers and to the use of the same set of wavelengths for the downlink and uplink signal transmission. | 09-06-2012 |
| 20120230692 | Sub-Octave RF Stacking for Optical Transport and De-Stacking for Distribution - A system for transporting a plurality of digital signals includes a head-end unit for routing each digital signal to a particular modem, according to address information in the signal. At its respective modem, each digital signal is mixed for further transmission on a unique, modem-specific, radio frequency (f | 09-13-2012 |
| 20120230693 | SIGNAL PROCESSING METHOD, DEVICE, AND SYSTEM IN A PASSIVE OPTICAL NETWORK - A signal processing method, device, and system in a passive optical network are provided. The signal processing method in the passive optical network includes: performing baseband encoding processing on a received service signal; modulating the service signal after baseband encoding processing onto allocated Orthogonal Frequency Division Multiple Access subcarriers through an Orthogonal Frequency Division Multiplexing modulation manner; performing digital/analog conversion on the modulated OFDMA subcarriers to obtain an electric domain Orthogonal Frequency Division Multiple Access signal; modulating the electric domain Orthogonal Frequency Division Multiple Access signal to an uplink optical signal to obtain an optical domain Orthogonal Frequency Division Multiple Access signal; and transmitting the optical domain Orthogonal Frequency Division Multiple Access signal. | 09-13-2012 |
| 20120243872 | OPERATION METHODS IN AN ETHERNET PASSIVE OPTICAL NETWORK THAT INCLUDES A NETWORK UNIT WITH MULTIPLE ENTITIES - A method for registration of multiple entities belonging to a specific optical network unit (ONU). In one embodiment, the multiple entity registration method comprises checking by an optical line terminal (OLT) if a registration request message received from the specific ONU belongs to a certain grant, and based on the check result, registering an entity as either a first or as an additional entity of the specific ONU. In another embodiment, the method comprises checking by an OLT of a reserved value of a flags field inside a registration request message, and based on the check result, registering an entity as either a first or as an additional entity of the specific ONU. The knowledge by an OLT that multiple entities belong to a specific ONU is used for grant optimization and packet data flow optimization. | 09-27-2012 |
| 20120251113 | SEAMLESS CONFIGURATION UPDATE FOR OPTICAL NETWORK UNIT IN ETHERNET PASSIVE OPTICAL NETWORK - Techniques for updating configuration of an Optical Network Unit (ONU) in an Ethernet Passive Optical Network (EPON) include receiving a notification that an updated configuration file is available for the ONU, obtaining the updated configuration file, performing a first validation of the updated configuration file for structural errors, determining changes between a current configuration of the ONU and the updated configuration file to identify ONU resources to implement to the changes, performing a second validation about whether the ONU resources to implement the changes are available or not at the ONU and applying the changes to the ONU when it is determined that the ONU resources to implement the changes are available at the ONU. | 10-04-2012 |
| 20120251114 | Optical Network Terminal Management and Control Interface Over Ethernet - An apparatus comprising a data framer configured to frame an external protocol extension message for transmission, the external protocol extension message comprising a header that indicates an external protocol extension and at least one type-length-value (TLV) comprising a type field, a length field, and a value field, wherein a format of the TLV is specified by a specific organization, and wherein the value field comprises information related to protocol functions external to the network. Also included is an apparatus comprising at least one component configured to implement a method comprising compiling an external protocol extension message comprising a plurality of TLVs and a header that indicates an external protocol extension, and transmitting the external protocol message. | 10-04-2012 |
| 20120263469 | Method for Reducing Power Consumption of a Passive Optical Network - A method for reducing energy consumption of a passive optical network includes optical network units of the network which infer their downstream queue status rather than being explicitly notified by an optical line terminal of the network. Based on the inferred queue status, the optical network units make their own sleep mode decisions without assistance from optical line terminal. Both downstream traffic inference and sleep decision making at the optical network units are based on common information possessed by optical line terminal and optical network units. Accordingly, the optical line terminal can accurately infer the status of each optical network unit if the sleep control scheme implemented at an optical network unit is known by the optical line terminal. | 10-18-2012 |
| 20120269514 | High Speed IO with Coherent Detection - In one embodiment, a first module of a server system modulates a common-source optical signal to generate a modulated optical data signal, transmits the modulated optical data signal to a second module of the server system via an optical link, and the second module demodulates the optical data signal using a coherent detection technique using the common-source optical signal. | 10-25-2012 |
| 20120275792 | System and Method for Avoiding Upstream Interference in RF-Over-Glass Network - A headend communications device communicates via a network to downstream network elements, such as cable modems coupled behind optical network units, and allocates and grants timeslots for upstream transmissions from the network elements. The headend communications device has a scheduler for managing and controlling timeslot allocations in a manner avoiding interference such as optical beat interference or FM carrier collisions. The scheduler identifies two or more cable modems or like customer network elements served by the headend communications device that will cause at least a pre-determined intolerable level of interference when allocated overlapping timeslots for upstream transmissions and prevents these two or more cable modems or network elements from being allocated and granted overlapping timeslots. | 11-01-2012 |
| 20120288279 | POWER CONTROL IN AN OPTICAL NETWORK UNIT - There are disclosed techniques for power control in an Optical Network Unit (ONU) of a Passive Optical Network (PON). In one embodiment, the supply of power to an optical transmitter is controlled in accordance with information defining a plurality of transmission windows during which data can be transmitted from the ONU, in order to achieve the following: (1) to provide power to the optical transmitter beginning at a predetermined time in advance of a transmission window to ensure a laser in the optical transmitter is ready to begin transmitting the data at the start of the transmission window; and (2) to refrain from providing full power to the optical transmitter between transmission windows when the duration of time between the transmission windows is greater than a predetermined length. | 11-15-2012 |
| 20120288280 | METHOD, APPARATUS, AND SYSTEM FOR TIME SYNCHRONIZATION ON PASSIVE OPTICAL NETWORK - A method for time synchronization on a passive optical network is disclosed, including: an optical line terminal (OLT) receives clock information sent by a first optical network unit (ONU); the OLT adjusts local time of the OLT according to the clock information, to implement clock synchronization between the OLT and the first ONU; the OLT sends the clock information to a second ONU, to implement clock synchronization between the second ONU and the OLT. The OLT in an embodiment of the present invention does not need to obtain clock signals from an upper network and the clock information does not need to be transmitted in a multi-level mode over a packet network; therefore, the precision of ToD can be greatly increased. | 11-15-2012 |
| 20120301147 | TIME SYNCHRONIZATION METHOD AND DEVICE IN PASSIVE OPTICAL NETWORK AND PASSIVE OPTICAL NETWORK - A time synchronization method and a time synchronization device in a passive optical network (PON), and a PON are provided. The method includes receiving a synchronization packet sent after time synchronization of an optical line terminal (OLT) with a master clock (MC) is achieved, wherein the synchronization packet carries a timestamp TMt | 11-29-2012 |
| 20120315044 | OPTICAL NETWORK CONFIGURATIONS WITH MULTIPLE BAND MULTIPLEXING AND DE-MULTIPLEXING AND AWG STRUCTURES WITH MULTIPLE BAND PROCESSING - Optical networks can comprise a branch structure with the de-multiplexing/multiplexing structure that operates to disperse a plurality of optical bands. Thus, the optical network comprises an optical network connection with a common optical channel, a plurality of de-multiplexed branch optical service connections and the de-multiplexing/multiplexing structure. In some embodiments, one optical band can be used to deliver input from a common channel to the branch node and the other optical band can carry output along the common channel from the branch node. The de-multiplexing/multiplexing element can be an arrayed waveguide grating. The AWG can have desirable architecture to efficiently provide the corresponding functions with respect to the two optical bands. Appropriate photodetectors and light sources can be associated with the AWG. | 12-13-2012 |
| 20120315045 | DYNAMIC BANDWIDTH ALLOCATION FOR UPSTREAM TRANSMISSION IN PASSIVE OPTICAL NETWORKS - Methods for dynamic bandwidth allocation among optical networks units for upstream transmission, performed by an optical line terminal of a passive optical network, which compensate for unused guaranteed bandwidth, which compensate for inability to use allocated bandwidth due to lack of data frame fragmentation, and which provide fair bandwidth allocation between mixed high transmission rate and low transmission rate optical network units. | 12-13-2012 |
| 20120321312 | GRANT SCHEDULER FOR OPTICAL NETWORK DEVICES - In general, techniques are described for performing grant scheduling in optical networks. An optical line terminal (OLT) comprising a control unit may implement the techniques. The control unit determines an amount of upstream data associated with a category of service that is waiting at a first one of a plurality of ONTs to be transmitted upstream to the OLT and computes a number of GCPs for each of the ONTs based on a determined amount of data associated with the category of service that is waiting to be transmitted upstream to the OLT for each of the ONTs. After computing the number of GCPs, the control unit then grants time slots to the one or more of the ONTs based on the number of GCPs computed for each of the ONTs, wherein the time slots comprise time slots for upstream communication form the ONTs to the OLT. | 12-20-2012 |
| 20120321313 | METHOD AND APPARATUS FOR PROCESSING DOWNLINK FRAME SYNCHRONIZATION IN GIGABIT-CAPABLE PASSIVE OPTICAL NETWORK SYSTEM - Disclosed in the present invention are a method and apparatus for processing downlink frame synchronization in a Gigabit-capable passive optical network (GPON) system, wherein the method comprises: carrying out forward error correction (FEC) encoding on data in a synchronization domain of a downlink frame of the GPON system, wherein the synchronization domain includes a physical synchronization (Psync) domain and an identifier (Ident) domain; filling the FEC encoded data into an FEC check domain provided in the downlink frame; and sending the downlink frame. By virtue of the present invention, the effect of improving the reliability of GPON downlink frame synchronization is achieved. | 12-20-2012 |
| 20120321314 | DISTRIBUTED ANTENNA SYSTEM FOR MIMO TECHNOLOGIES - The invention is directed to a method and system for supporting MIMO technologies which can require the transport of multiple spatial streams on a traditional Distributed Antenna System (DAS). According to the invention, at one end of the DAS, each spatial stream is shifted in frequency to a pre-assigned band (such as a band at a frequency lower than the native frequency) that does not overlap the band assigned to other spatial streams (or the band of any other services being carried by the DAS). Each of the spatial streams can be combined and transmitted as a combined signal over a common coaxial cable. At the other “end” of the DAS, the different streams are shifted back to their original (overlapping) frequencies but retain their individual “identities” by being radiated through physically separate antenna elements. | 12-20-2012 |
| 20120328294 | HIGH SPEED PASSIVE OPTICAL NETWORK ARCHITECTURE - A system may include one or more single-mode optical fibers that connect an optical line terminal at a central office to an input cable of an optical splitter in a fiber distribution hub, and one or more dispersion compensating optical fibers that connect an output cable of the optical splitter to an optical network terminal at customer premises. The one or more single-mode optical fibers, the optical splitter, and the one or more dispersion compensating optical fibers may form a communication path, for an optical signal, from the optical line terminal at the central office to the optical network terminal at the customer premises, When the optical signal travels from the optical line terminal at the central office to the optical splitter over the one or more single-mode optical fibers, the optical signal may gain positive dispersion. When the optical signal travels from the optical splitter to the optical network terminal at the customer premises, the optical signal may gain negative dispersion that partially or fully cancels the positive dispersion that the optical signal has gained over the one or more single-mode optical fibers. | 12-27-2012 |
| 20130004171 | OPTICAL LINE TERMINAL FOR OPTOELECTRICALLY CONVERTING A SIGNAL AND A METHOD THEREFOR - In an optical line terminal connectable to optical network units in an optical communication network, an receiver converts an upstream optical signal, received from an optical network unit, into a corresponding upstream electric signal and then derives an upstream control signal controlling the optical line terminal from the upstream electric signal. A controller generates a power control signal switching on or off power supply to the receiver on the basis of the upstream control signal, and a power feeder switches on or off the power supply to the receiver in response to the power control signal. Thus, the optical line terminal can reduce the waste of standby electricity. | 01-03-2013 |
| 20130022356 | Energy Efficiency and Cost Efficient Protection in Passive Optical Networks - A network element implementing an optical network unit (ONU) that is configured to improve efficiency in a passive optical network (PON), the ONU connected to an optical line terminal (OLT) over an optical line, the ONU connected with an aggregating ONU (AG-ONU) in the PON through an alternate connection separate from the PON, the ONU improving protection (maintenance) cost and energy efficiency for the PON by entering a sleep mode that disables communication with the OLT over the optical line to reduce energy consumption when the ONU is idle, the ONU to restart communication with the OLT over the optical line upon receipt of data traffic, the ONU including an alternate connection module configured to communicate with the AG-ONU; and a network processor configured to execute a quality of service module, an AG-ONU monitor module, a traffic forwarding module and a power management module. | 01-24-2013 |
| 20130045012 | Multi-Service Provisioning in Orthogonal Frequency Division Multiplexing-Passive Optical network OFDMA-PON - A method for multi-service provisioning in an OFDMA-PON that includes linking communicatively to a core network and bandwidth provisioning, dynamically within a single wavelength, traffic from the core network to a network of multiple virtual passive optical networks VPONs for multi-service provisioning to the VPONs. | 02-21-2013 |
| 20130058654 | Gigabit-Capable Passive Optical Network (GPON) system and Point-to-Point Protocol over Ethernet (PPPOE) configuration method implemented thereby - The disclosure discloses a Point-to-Point Protocol over Ethernet (PPPOE) configuration method for a Gigabit-Capable Passive Optical Network (GPON) system. The method comprises: an Optical Line Terminal (OLT) instructing an Optical Network Unit (ONU) to create or delete a PPPoE management object instance and associate the PPPoE management object instance with an IP host config data management object instance; and the ONU creating the PPPoE management object instance according to the creation instruction from the OLT, and turning on a PPPoE function switch in the IP host config data management object instance; or the ONU deleting the PPPoE management object instance according to the deletion instruction from the OLT, and turning of the PPPoE function switch in the IP host config data management object instance. The disclosure also discloses a GPON system. With the disclosure, the problem that the existing GPON system cannot support accessing in a manner of PPPoE dial-up is solved, and the PPPoE scenario requirements are met. | 03-07-2013 |
| 20130058655 | TRANSMISSION APPARATUS FOR OPTICAL TRANSPORT NETWORK, AND STAFF CONTROL METHOD THEREFOR - A transmission apparatus for an optical transport network includes maps client data to a payload of an optical transport unit in order to obtain a higher layer frame generated based on a clock on the optical transport network side, and sends the higher layer frame to the optical transport network. A Cn value indicating an amount of the client data to be mapped to the payload of the optical transport unit is computed based on a counted value, counted using a clock of the client data, of a time period corresponding to the payload of the optical transport unit in the higher layer frame generated using a clock of the optical transport network. | 03-07-2013 |
| 20130058656 | OPTICAL TRANSMISSION DEVICE, SCRAMBLING METHOD, AND DESCRAMBLING METHOD - A first header-attaching unit attaches to data of a low speed bit rate A, a header of the bit rate A. A second header-attaching unit attaches the header of the bit rate A to data of a high speed bit rate B. A combining unit combines outputs of the first and the second header-attaching units. A low speed scrambling unit performs a scrambling process on combined data by using a clock corresponding to the bit rate A. A high speed scrambling unit performs a scrambling process on the data of the bit rate B by using a clock corresponding to the bit rate B. During a timing corresponding to the bit rate A in the frame, a selector selects an output of the low speed scrambling unit. During a timing corresponding to the bit rate B in the frame, the selector selects an output of the high speed scrambling unit. | 03-07-2013 |
| 20130071120 | DIGITIZER FOR USE IN AN OVERLAY SYSTEM WITH DIGITAL OPTICAL TRANSMITTER FOR DIGITIZED NARROWCAST SIGNALS - Methods and apparatuses are provided to digitize an analog multi-channel RF narrowcast signal in an overlay system by dividing the signal into a plurality of subband signals and digitizing each subband signal using practical A/D converters. | 03-21-2013 |
| 20130077974 | SYSTEM AND METHOD FOR IDENTIFYING A TARGET SIGNAL IN AN OPTICAL TRANSPORT NETWORK FRAME STRUCTURE - In accordance with embodiments of the present disclosure, a method for identifying a target signal in an optical transport network frame structure may be provided. The method may include determining an Access Identifier (AID) for the target signal. The method may also include determining at least one attribute for the target signal. The at least one attribute may define at least one of an Optical Transport Network (OTN) multiplexing structure associated with the target signal and one or more attributes associated with one or a higher order or an intermediate higher order optical data unit entity for a supporting entity of a lower order optical data unit associated with the target signal. The method may further include identifying the target signal based on the AID and the at least one attribute. | 03-28-2013 |
| 20130077975 | SYSTEM AND METHOD FOR PERFORMING IN-BAND REFLECTION ANALYSIS IN A PASSIVE OPTICAL NETWORK - A system for performing in-band reflection analysis in a passive optical network. The system comprises an optical line terminal (OLT) that includes a transceiver for transmitting continuous downstream data modulated on a first wavelength and receiving upstream burst data modulated on a second wavelength, the OLT further includes a receiver for receiving signals reflected from the PON that are modulated on the first wavelength, wherein the continuous downstream data comprises user data and a test data pattern; and a reflection analysis unit for cross-correlating between a time-shifted version of the transmitted test data pattern and the reflected signals, wherein the test data pattern is time-shifted relatively for an optical location to be tested. | 03-28-2013 |
| 20130089330 | Method And Apparatus For Efficient Operation Of A Passive Optical Communications Access Network - A method and apparatus for providing an efficient optical access network. In a preferred embodiment, a single light source is used to generate light in a network node, such as an OLT (optical line terminal). The generated light is then distributed using an optical splitter to a plurality of outputs, each associated with an ONU. The distributed light intended for a particular ONU (optical network unit) is modulated, for example by an EOM (electro-optical modulator), with a signal carrying communications for the intended ONU. The OLT includes a bank of EOMs or other kind of optical modulators, such as EAMs for serving a plurality of ONUs. The OLT may also include a second light source for generating light that is propagated to one or more of the ONUs for their use in forming upstream transmissions. | 04-11-2013 |
| 20130094859 | CABLE COMMUNICATION SYSTEMS AND METHODS EMPLOYING QAM UPSTREAM CHANNELS BELOW 16.4 MHZ FOR INCREASED AGGREGATE DEPLOYED UPSTREAM CAPACITY TO SUPPORT VOICE AND/OR DATA SERVICES - Cable communication systems and methods to provide voice and/or data services to subscriber premises via a cable plant that conveys upstream information over an upstream path bandwidth, and a cable modem system including one or more demodulation tuners to receive and demodulate one or more upstream radio frequency (RF) signals. One or more RF signals include an encoded carrier wave having a carrier frequency of between 5 MHz and 16.4 MHz that is modulated using a Time Division Multiple Access (TDMA) protocol or an Advanced Time Division Multiple Access (ATDMA) protocol and quadrature amplitude modulation (QAM) with voice and/or data information constituting at least some of the upstream information. An aggregate deployed upstream capacity of the one or more RF signals to convey the upstream information in a portion of the upstream path bandwidth between 5 MHz and 16.4 MHz is at least approximately 12 Megabits per second (Mbits/s). | 04-18-2013 |
| 20130094860 | DELIVERED-BANDWIDTH ADJUSTMENT METHOD AND MODULE, AND DYNAMIC BANDWIDTH ASSIGNMENT DEVICE - Embodiments of the present invention provide a delivered-bandwidth adjustment method and module, and a dynamic bandwidth assignment device. The method includes: obtaining a transmission container bandwidth; and adjusting a delivery cycle of a bandwidth delivery stage and a delivered bandwidth of each delivery cycle according to a preset set of bandwidth thresholds and the transmission container bandwidth, where the preset set of bandwidth thresholds include at least two bandwidth thresholds and a delivery cycle corresponding to each bandwidth threshold. Through the technical solutions in the embodiments of the present invention, the delivered bandwidth can be managed effectively, so as to improve the bandwidth utilization and the data transmission efficiency. | 04-18-2013 |
| 20130101292 | RESIZING EXISTING TRAFFIC FLOW IN OPTICAL TRANSPORT NETWORK - In an optical transport network a traffic flow comprises data grouped into a number of resizable data units, encapsulated by optical transport frames, each having a frame overhead. A rate of the traffic flow is changed by changing the data unit overhead and changing at the source node the frame overhead to indicate a change in rate of an optical signal carrying the traffic flow. An optical transmission part is tuned to transmit at the new rate, and at any intermediate nodes along the route the indication of the change in rate is detected in the frame overhead so that the traffic flow on a next optical link is transmitted at the new rate. Thus optical bandwidth allowed for enlarging the data units, can be saved, and electrical processing of data units at the nodes can be simplified, reducing power consumption. | 04-25-2013 |
| 20130101293 | World-wide, wide-band, low-latency, mobile internet and system therefor - A communication system for providing world-wide, mobile Internet communication to a plurality of users and a method therefore. The system includes ground-based, multi-channel, radio frequency transmitting and receiving broadcasting grids that are capable of providing content to multiple users via cell towers and low-altitude, optical transmitting and receiving satellites that are in optical communication with the ground-based, multi-channel, RF transmitting and receiving broadcasting grids. The method includes transmitting optical and/or RF signals between at least one of the ground-based, multi-channel, RF transmitting and receiving broadcasting grids and at least one of the low-altitude, optical transmitting and receiving satellites. | 04-25-2013 |
| 20130108271 | SYNCHRONOUS CLOCKING FOR OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING TRANSMISSION SYSTEMS | 05-02-2013 |
| 20130114960 | Method and Apparatus for Transmitting Data on a Network - Systems and methods are provided for a network unit for transmitting packets on a network that includes a computer-readable medium encoded with an array data structure that is populated by plurality of entries, each entry corresponding to a packet in a queue of packets to be transmitted, a particular entry including a value that is based on a sum of packet sizes stored in a neighboring entry and a packet size of a packet corresponding to the particular entry. A search engine is configured to receive a gate size and to search the array to identify a particular entry in the data structure that has a value nearest to but not greater than the gate size as a transmission entry. A transmission engine is configured to transmit packets from the beginning of the queue up to a particular packet associated with the transmission entry. | 05-09-2013 |
| 20130129352 | System and Method for Second Order Multi-Layer Traffic Grooming for Optical Network Optimization - A method includes forming a set of direct connections (including a high-speed connection and a low-speed connection) between an origination central office (OCO) and a destination central office (DCO). The method includes forming a spoke connection between the OCO and a hub node and forming a connection between the hub node and the DCO. The spoke connection is formed to carry first residual demand traffic from the OCO to the hub node. The connection is formed to carry the first residual demand traffic and second residual demand traffic (received at the hub node from other OCOs) from the hub node to the DCO. The method includes determining a first estimated cost (of forming the set of direct connections) and a second estimated cost (of forming the spoke connection and the connection). The method includes determining whether the first estimated cost exceeds the second estimated cost. | 05-23-2013 |
| 20130129353 | Signal Transmission Processing Method and Apparatus and Distributed Base Station - The disclosures provide a method and apparatus for transmitting and receiving interface signals of a distributed base station. At least one channel of Common Public Radio Interface (CPRI) signals of a distributed base station are encapsulated into optical transport unit x (OTUx) signals in a frame structure of OTUx by adopting Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity and wherein the OTUx is adopted for providing a bandwidth required by the at least one channel of CPRI signals, and then the OTUx signals that bear the at least one channel of CPRI signals are sent. | 05-23-2013 |
| 20130129354 | LOGICAL-LINK MANAGEMENT METHOD AND COMMUNICATION DEVICE - A logical-link management method to be executed in an optical communication system including a station side device (OLT) and a subscriber side device (ONU) that is capable of setting a plurality of logical links together with the OLT, in which the OLT transmits a signal for managing the ONU via a single logical link. The logical-link management method includes a status monitoring of the OLT monitoring whether there is a change in a connection status of the logical link between the OLT and the ONU and a link resetting of the OLT resetting, when a change of the connection status of the logical link is detected at the status monitoring, a device management logical link used for transmitting the signal for managing the ONU according to a predetermined procedure. | 05-23-2013 |
| 20130142512 | Self-Seeded Colorless Burst-Mode Transmitter Using Reflective Semiconductor Optical Amplifier and Injection-Locked Fabry-Perot Laser - An apparatus comprises an optical port; a first optical transmitter; a second optical transmitter; a partially reflective mirror positioned between the first optical transmitter, the second optical transmitter, and the optical port; and an optical rotator positioned between the partially reflective minor and the first optical transmitter. | 06-06-2013 |
| 20130142513 | Apparatus and Method for Reducing Traffic on a Unified Optical and Coaxial Network - A coaxial line terminal (CLT) comprising an optical port configured to couple to an optical line terminal (OLT) via an optical distribution network (ODN), an electrical port configured to couple to a coaxial network unit (CNU) via an electrical distribution network, and a processor coupled to the optical port and the electrical port, wherein the processor is configured to receive from the OLT a plurality of first frames addressed to the CNU, receive from the OLT a plurality of second frames not addressed to the CNU, forward the first frames to the CNU, and prohibit the second frames from being forwarded to the CNU. | 06-06-2013 |
| 20130142514 | Apparatus and Method of Identifying a Transit Node in a Unified Optical-Coaxial Network - An optical line terminal (OLT) comprising a processor configured to assign a logical node identifier (LNID) to a coaxial line terminal (CLT), wherein the CLT intermediates between the OLT via an optical portion of a unified optical-coaxial network and a coaxial network unit (CNU) via an electrical network portion of the unified optical-coaxial network, and transmit a plurality of frames to the CLT via the optical portion of the unified optical-coaxial network, wherein the frames have a CNU address as a destination address, and wherein at least some of the frame comprise the LNID. Included is a method implemented at a CNU, the method comprising receiving a first frame comprising a LNID for a CLT, and transmitting a second frame comprising the LNID for the CLT, wherein the CNU is part of an Ethernet Passive Optical Network (EPON) over Coaxial (EPoC) network. | 06-06-2013 |
| 20130148968 | STATION-SIDE APPARATUS AND PON SYSTEM - An OLT, which is a station-side apparatus in a PON system, is connected to an ONU via an optical fiber. The OLT includes: an optical receiver which receives a burst signal from an ONU; a burst header detection unit which detects a certain delimiter pattern included in a received burst signal so as to establish synchronization of the burst signal; and a control unit which allows the burst header detection unit to perform detection of a delimiter pattern during a predicted reception period of a burst signal. | 06-13-2013 |
| 20130163989 | METHOD AND APPARATUS FOR AUTHENTICATION IN PASSIVE OPTICAL NETWORK - A method and apparatus for authentication in a passive optical network are disclosed. In the disclosure, a PLOAM message is sent from an ONU to an OLT, where the PLOAM message includes a first field for carrying an ONU identifier (ONU-ID) and a second field for carrying a first logic registration code, where the ONU-ID is assigned by the OLT to identify the ONU and wherein the first logic registration code is assigned to a user by an operation management system communicatively connected to the OLT and provisioned to the user for authentication. The OLT is configured to judge whether the first logic registration code received from the ONU matches with a second logic registration code provisioned by the operation management system to the OLT and to promote the ONU into service if the first logic registration code matches with the second logic registration code. | 06-27-2013 |
| 20130177313 | Ethernet Passive Optical Network with Report Threshold Calculations - The present disclosure is directed to a method and apparatus for maintaining sub-queues at an ONU and for maintaining a count of an amount of data stored in each sub-queue or a count of an amount of data associated with elements stored in each sub-queue. The sub-queues represent partitions in a first in, first out (FIFO) queue used by the ONU to buffer packets, or elements that are associated with packets, to be sent upstream. The sub-queues are coupled in series such that the output of a first sub-queue feeds the input of a second sub-queue, the output of the second sub-queue feeds the input of a third sub-queue, etc. Each sub-queue has a defined threshold that sets a maximum amount of packet data it can buffer or the elements in which it buffers can be associated with. | 07-11-2013 |
| 20130177314 | RELAY DEVICE, STATION-SIDE OPTICAL COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND BANDWIDTH ALLOCATION METHOD - A relay device that relays communication between a low-speed communication device performing uplink 1 G transfer and a high-speed communication device performing uplink 10 G transfer and a station-side optical communication device, wherein the relay device includes a low-speed reception unit that converts an optical signal received from the low-speed communication device to an electric signal, a buffer that buffers the electric signal, and a high-speed transmission unit that transmits, to the station-side optical communication device, a bandwidth allocation request requesting bandwidth allocation for communication from its own unit to the station-side optical communication device, and within a transmission permitted time period allocated by the station-side optical communication device, reads an electric signal stored in the buffer, converts the electric signal to an optical signal having a communication speed of 10 G, and transmits the optical signal. | 07-11-2013 |
| 20130183037 | DOCSIS PON - In accordance with a first aspect of the disclosure, a system is provided. The system includes: an optical line terminal (OLT) shelf including a plurality of optical line cards, each optical line card supporting at least one passive optical network (PON) interface for communicating with a corresponding set of optical network units (ONUs), the OLT shelf thereby corresponding to a plurality of sets the ONUs; a system card controller for controlling the plurality of optical line cards; and a DOCSIS proxy for emulating a cable modem (CM) SNMP agent for each ONU, the DOCSIS proxy being responsive to an SNP manager in a DOCSIS NMS to configure the ONUs accordingly. | 07-18-2013 |
| 20130183038 | CUSTOMER PREMISES OPTICAL NETWORK UNIT AND OPTICAL TRANSMISSION SYSTEM - An optical network unit according to the present invention is provided as comprising a configuration that component units built therein are grouped for at least two sheets of substrate modules and arranged thereat. There are provided individual embodiments: (a) arranging an L2 layer and a part of the component unit of an L1 layer at a first substrate module, meanwhile, arranging the left part of the component unit of the L1 layer at a second substrate module; (b) arranging the component units of the L1 layer and of the L2 layer at the first substrate module and the second substrate module individually by grouping therefor; and (c) arranging the component units of the L2 layer and of the L1 layer at the first substrate module and the second substrate module respectively. | 07-18-2013 |
| 20130188953 | OPTICAL NETWORK SYSTEM AND METHOD FOR CONTROLLING OPTICAL NETWORK SYSTEM - An optical network system for controlling a passive optical network (PON) in which at least one symmetric optical subscriber terminal and at least one asymmetric optical subscriber terminal coexist is provided. | 07-25-2013 |
| 20130195457 | METHOD AND SYSTEM FOR PERFORMING DISTRIBUTED DEEP-PACKET INSPECTION - A method for deep-packet inspection of packets flowing through an end unit in a point-to-multipoint network. The method comprises classifying packet flows through the end unit using their flow-identification (ID) to determine which of the packet flows should be deep-packet inspected, wherein the packet flows include incoming packets received from a central unit and outgoing packets sent to the central unit of the point-to-multipoint network; duplicating packets determined to be deep-packet inspected; saving all duplicated packets in a memory; upon collection of a predefined number of duplicated packets belonging to a certain flow-ID, performing deep-packet processing based on at least one deep-packet inspection application; and saving the deep-packet processing results in the memory. | 08-01-2013 |
| 20130195458 | Bandwidth Adjustment Method and System for Optical Channel Data Unit Flexible Based on Generic Framing Procedure - The disclosure claims a bandwidth adjustment method and system for Optical channel Data Unit flexible (ODUflex) based on a Generic Framing Procedure (GFP), wherein, the method includes that: ( | 08-01-2013 |
| 20130202302 | OPTICAL LINE TERMINAL AND OPTICAL NETWORK UNIT - An optical line terminal which includes an observing unit that observes information of any one or all of an arrival interval of frames, an instantaneous bandwidth under use of a flow, a queue length of a queue temporarily storing the frames, and a traffic type, and a stop determining unit that dynamically determines a sleep time to be a period in which a sleep state where partial functions of the ONU are stopped is maintained, on the basis of the information obtained by the observing unit. The ONU is entered into a sleep state, immediately after communication ends, after a predetermined waiting time passes from when the communication ends, or after a waiting time determined on the basis of the information passes from when the communication ends. | 08-08-2013 |
| 20130216229 | ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS TIME DIVISION MULTIPLE ACCESS-PASSIVE OPTICAL NETWORKS OFDMA TDMA PON ARCHITECTURE FOR 4G AND BEYOND MOBILE BACKHAUL - Systems and methods are provided for network communication using wireless base stations and an optical orthogonal frequency division multiple access (OFDMA) signal generated on an optical wavelength, with the optical OFDMA signal being composed of a plurality of OFDMA subcarriers. A multi-level modulator modulates each of the plurality of OFDMA subcarriers. A single optical wavelength propagates each of the plurality of OFDMA subcarriers to different base stations; a passive optical splitter delivers the optical OFDMA signal to different base stations; and an OFDMA subcarrier de-multiplexer delivers and extracts traffic for each of the base stations in an electronic-domain, wherein the extracted traffic is remodulated in a wireless signal format. Antennas at each of the base stations transmit wireless signals, and the wireless signals are recovered and processed from the base stations. | 08-22-2013 |
| 20130230324 | Passive Optical Network Digital Subscriber Line Convergence Architecture - A method of communicating using an optical line terminal (OLT), the method comprising acquiring encapsulated data by a digital subscriber line (DSL) physical media specific transmission convergence (PMS-TC) sublayer from a protocol specific transmission convergence (TPS-TC) sublayer, and framing the encapsulated data into a frame by the PMS-TC sublayer for transmission to a corresponding PMS-TC sublayer in a customer premises equipment (CPE). | 09-05-2013 |
| 20130236177 | DELIVERING DOWNSTREAM DATA IN ETHERNET PON OVER COAX NETWORK - An apparatus comprising a processor configured to obtain one or more plant conditions regarding at least one of a plurality of customer premises equipment (CPEs) remotely coupled to the apparatus via electrical lines, and divide the plurality of coupled CPEs into a number of profile groups based on the one or more plant conditions, wherein each profile group comprises at least one CPE and supports one or more modulation orders. | 09-12-2013 |
| 20130251371 | SYSTEMS AND METHODS FOR SCHEDULING BUSINESS AND RESIDENTIAL SERVICES IN OPTICAL NETWORKS - A passive optical network (PON) has an optical line termination (OLT) that terminates an optical fiber servicing a plurality of optical network units (ONUs). Each ONU has one or more traffic containers (TCONTs) addressable by the OLT. The PON dynamic bandwidth allocation (DBA) implements a scheduling hierarchy, including several scheduling layers, such that disjoint sets of TCONTs can be grouped together, then disjoint sets of groups can be grouped, and so on. In such hierarchy, the residential traffic can be grouped separately from the business traffic. Further, within either the residential or business group, traffic may be grouped to define scheduling layers (“sub-groups”) within the residential or business group. Scheduling in one group or sub-group is performed independently of the scheduling in other groups or sub-groups, subject to the available bandwidth for each group. The scheduling may be controlled to allow the residential services to be oversubscribed while still ensuring compliance of service level performance metrics for the business services. | 09-26-2013 |
| 20130259481 | CLIENT SIGNAL MAPPING CIRCUIT AND MAPPING METHOD - A client signal mapping circuit for accommodating a client signal in a transmission frame, including: a buffer unit configured to temporarily store the client signal; a buffer used amount monitoring unit configured to report a used amount of the buffer unit; a stuff processing determination unit configured to compare the used amount of the buffer unit with a predetermined reference value, and a pseudo random sequence signal and the comparison result; an overhead insertion unit configured to add an overhead to the client signal read from the buffer unit to form a transmission frame; and a reading control unit configured to perform control for reading the client signal from the buffer unit based on determination by the stuff processing determination unit. | 10-03-2013 |
| 20130272706 | Header Error Control Protected Ten Gigabit Passive Optical Network Downstream Frame Synchronization Pattern - An apparatus comprising an optical line terminal (OLT) configured to couple to a plurality of optical network units (ONUs) and transmit a plurality of downstream frames to the ONUs, wherein each of the downstream frames comprises a plurality of forward error correction (FEC) codewords and a plurality of additional non-FEC encoded bytes that comprise synchronization information that is protected by Header Error Control (HEC) code. An apparatus comprising a processing unit configured to arrange control data, user data, or both into a plurality of FEC codewords in a downstream frame and arrange a physical synchronization sequence (PSync), a superframe structure, and a Passive Optical Network-identifier (PON-ID) structure in a plurality of additional non-FEC encoded bytes in the downstream frame, and a transmission unit configured to transmit the FEC codewords and the additional non-FEC encoded bytes in the downstream frame within a 125 microsecond window. | 10-17-2013 |
| 20130279914 | APPARATUS AND METHODS FOR DYNAMIC DELIVERY OF OPTICAL AND NON-OPTICAL CONTENT IN A NETWORK - Apparatus and methods for providing content to devices in a content distribution network. In one embodiment, a hybrid fiber/coax network provides optical signals to an amplification and combination node, the signals which are converted to radio frequency (RF) signals and transmitted to a series of cascading amplification and combination apparatus. The converted signals are combined with legacy RF signals at the combination apparatus, and distributed further downstream to serviced premises as well as other portions of the network cascade. Time division techniques are used to mitigate interference between the various amplification and combination nodes within the cascade. The programmable time division devices allow for rapid spectrum reallocation, and for insertion of different content at each different node of the network. | 10-24-2013 |
| 20130308948 | EXTENDING CONTROL PLANE FUNCTIONS TO THE ENTWORK EDGE IN AN OPTICAL TRANSPORT NETWORK - A method of extending the control plane to a network edge for a network having first set of nodes of the network are designated as core nodes, each core node being operable to route subscriber traffic between a pair of neighbour core nodes and a second set of control-plane enabled nodes of the network designated as tail nodes, each tail node connected to a core node and operating only as a source or sink of subscriber traffic. Each core node that is connected to at least one tail node is designated as a host node. The host node is controlled to advertise summary information of its connected tail nodes to other core and tail nodes in the network, thus making it possible to extend control plane function to the tail nodes which can calculate connection routes, set-up/tear-down connections and perform connection failure recovery functions. | 11-21-2013 |
| 20130315593 | System and Method for Applying an Extended Multipoint Protocol to Wireless Access Systems - A system and method for applying an extended multipoint control protocols to wireless access systems. A medium-to-medium adaptor can be provided in an adaptor node that can interface with an upstream optical line terminal in a PON domain and a downstream device in a non-PON wireless domain. The medium-to-medium adaptor enables an implementation of end-to-end services across multiple quality of service (QoS) domains by passing all traffic with controlled delay and without contention. | 11-28-2013 |
| 20130315594 | METHOD, SYSTEM, AND DEVICE FOR TRANSMITTNG OPTICAL NETWORK TERMINAL MANAGEMENT AND CONTROL INTERFACE MESSAGE - The present application discloses a method, a system and a related device for transmitting an OMCI message. In the method, an optical line terminal device sends configuration information to an optical network terminal device, where the configuration information is configured to instruct the optical network terminal device to configure a multicast port on the optical network terminal device to an enabled status so as to establish a multicast channel. The optical line terminal device sends an OMCI message that includes multicast information to the optical network terminal device through the multicast channel, where the multicast information includes a multicast port identifier and the multicast port identifier is configured to reflect a mapping between the OMCI message and the multicast port. | 11-28-2013 |
| 20130330078 | FAST PROTECTION SCHEME FOR PASSIVE OPTICAL NETWORK - The present invention relates to a method and devices for fast protection of an optical network system, in particular for a Passive Optical Network (PON), such as a Gigabit-capable Passive Optical Network (GPON). In the method, it is detected that the communication from a first optical network device is lost. Switching of functionality is initiated from a first optical line termination device to a second optical line termination device, and a control message is sent from the second optical line termination device to the first optical network device such that the first optical network device is prevented from moving into initial state. Furthermore, the method comprises determining and setting timing settings for the first optical network device. | 12-12-2013 |
| 20140003816 | Client-side Dynamic Multi-routing Power Distribution System of FTTx Optical Terminal Equipment | 01-02-2014 |
| 20140010540 | VISIBLE LIGHT COMMUNICATION METHOD AND APPARATUS - Disclosed herein are a visible light communication method and apparatus. The visible light communication method includes determining whether a current location is the start of a symbol of a transmission signal, setting a sample index, a signal accumulated value for an accumulation region of a front half portion of the symbol, and a signal accumulated value for an accumulation region of a rear half portion of the symbol, determining whether the sample index belongs to an accumulation region of the front or rear half portion of the symbol, and accumulating samples of the transmission signal in accordance with the location to which the sample index belongs, determining whether a current location corresponds to the end of the symbol, and outputting a Variable Pulse Position Modulation (VPPM) communication signal corresponding to the transmission signal. | 01-09-2014 |
| 20140010541 | Energy Efficient Ethernet Power Management Via SIEPON Protocol - Systems and methods are provided to allow a service provider to manage, query, and dynamically configure the protocols on network facing interfaces as well as the devices on that domain where the service provider may be provisioning services using the IEEE P1904.1 Standard for Service Interoperability in Ethernet Passive Optical Networks (SIEPON). Systems and methods are provided for using SIEPON to update an Energy Efficient Ethernet (EEE) configuration of a Customer Premise Equipment (CPE) device and for using SIEPON to gather information from a CPE device. | 01-09-2014 |
| 20140010542 | CABLE COMMUNICATION SYSTEMS AND METHODS EMPLOYING QAM UPSTREAM CHANNELS BELOW 16.4 MHZ FOR INCREASED AGGREGATE DEPLOYED UPSTREAM CAPACITY - Cable communication systems and methods to provide voice and/or data services to subscriber premises via a cable plant that conveys upstream information over an upstream path bandwidth via one or more upstream radio frequency (RF) signals. One or more RF signals include an encoded carrier wave having a carrier frequency of between 5 MHz and 16.4 MHz that is modulated using a Time Division Multiple Access (TDMA) protocol or an Advanced time Division Multiple Access (ATDMA) protocol and quadrature amplitude modulation (QAM) with voice and/or data information constituting at least some of the upstream information. An aggregate deployed upstream capacity of the one or more RF signals to convey the upstream information in a portion of the upstream path bandwidth between 5 MHz and 16.4 MHz is at least approximately 12 Megabits per second (Mbits/s). | 01-09-2014 |
| 20140016936 | METHODS AND APPARATUS TO DEPLOY FIBER OPTIC BASED ACCESS NETWORKS - Methods and apparatus to deploy fiber optic based access networks are disclosed. An example access network comprises a first fiber optic cable segment to couple an optical access head-end to a first pedestal and to transport user data, a second fiber optic cable segment to couple the first pedestal to a second pedestal and to transport a first portion of the user data to the second pedestal, a drop cable segment to couple the first pedestal to a customer premises and to transport a second portion of the user data to the customer premises, and a switch at the first pedestal to route the first portion of the user data between the first and second fiber optic cable segments and to route the second portion of the user data between the first fiber optic cable segment and the drop cable segment. | 01-16-2014 |
| 20140023369 | METHOD, SYSTEM AND OPTICAL NETWORK DEVICE FOR SYNCHRONIZING TIME OF A PASSIVE OPTICAL NETWORK - The present invention relates to method for synchronizing time, apparatus and system. The method discloses an OLT generates a Passive Optical Network (PON) downstream frame from to an Optical Network Unit (ONU), wherein the PON downstream frame comprises a time synchronization message based on Ethernet protocol, wherein the time synchronization message comprises a time value that is referenced to a PON Media Access Control (MAC) control layer and that indicates the ONU to adjust a time of a clock coupled to the ONU; and send the PON downstream frame. | 01-23-2014 |
| 20140044430 | SCALABLE OPTICAL BROADCAST INTERCONNECT - A modular interconnect includes an mn-by-mn fully connected, direct broadcast, point-to-point, all-to-all interconnect fabric, wherein the mn-by-mn fully connected, direct broadcast, point-to-point, all-to-all interconnect fabric is non-blocking and congestion free, and wherein m is an integer ≧2 and n is an integer ≧2. Operating the modular interconnect includes distributing each of mn inputs to each and every one of mn outputs. | 02-13-2014 |
| 20140050478 | Switching and Routing Protocol for a Fiber Optic Transmission System - A system for transporting a plurality of analog and/or digital signals over an optical fiber can include one or more master modems for modulating digital signals and/or RF inserters modulating video signals. The RF signals from the modem(s)/RF inserters are up-converted resulting in frequency bands that are non-overlapping and are spaced apart within a single sub-octave. The sub-octave signal is then converted into an optical signal and directed onto an end of an optical fiber. At the downstream end of the optical fiber, the received optical signal is converted to an RF signal at an optical receiver. The RF signal is then filtered, down-converted and directed to a selected coaxial distribution unit. From the coaxial distribution unit, the RF signal is demodulated, e.g. at a slave modem, to recover the initial analog and/or digital signal. | 02-20-2014 |
| 20140079395 | Raman Crosstalk Mitigation in a Multi-Wavelength System Utilizing an Optical Equalizing Signal Modulated with Composite Bandwidth-Limited Data Sources - A network element comprising a phase matched or phase controlled interconnect configured to receive a data signal sample, a Raman equalization transmitter, and a Raman crosstalk equalization conditioning circuit configured to generate a Raman mitigation signal using the data signal sample to be transmitted by the Raman equalization transmitter. Included is a method comprising multiplexing incoherent data signals with a video signal and a Raman mitigation signal to be co-propagated on a single optical fiber, wherein the Raman mitigation signal is selected to destructively interfere with Raman crosstalk noise induced on the video signal. Also included is a system comprising a video signal component configured to transmit a video signal, data stream signal components configured to transmit a data stream signals, a Raman crosstalk equalization system configured to transmit a Raman mitigation signal, and an optical multiplexer configured to multiplex the signals for co-propagation onto a single transmission fiber. | 03-20-2014 |
| 20140099111 | PON SYSTEM AND SUBCARRIER ASSIGNING METHOD - A PON (Passive Optical Network) system, which modulates multiple subcarriers with data of multiple users to output an optical multiplexed signal from a station device, splits the optical multiplexed signal to transmit the split signals to multiple subscriber devices that are provided for each of the users, and demodulates the data of the users at the respective subscriber devices, includes: an obtaining section configured to obtain a transmission characteristic for each of the subcarriers at each of the subscriber devices, by receiving a test signal at the subscriber devices, which is transmitted from the station device; and an assigning section configured to assign one or more of the subcarriers for each of the subscriber devices suited to the transmission characteristics of the assigned subcarriers at each of the subscriber devices. | 04-10-2014 |
| 20140099112 | NETWORK DESIGN APPARATUS, NETWORK DESIGN METHOD, AND STORAGE MEDIUM STORING NETWORK DESIGN PROGRAM - A network design apparatus includes a storage unit configured to store network topology information indicating a connection relationship between a plurality of nodes in a network in which the plurality of nodes are connected to each other by a link and demand information indicating a demand including a starting point node, an ending point node, a route, and the number of the demands, and a control unit configured, based on the network topology information and the demand information, to take out a certain number of nodes from the sorted nodes having the higher rank and generate combination candidates of transmission paths in which the starting point node, the ending point node, and the certain number of nodes are set as terminal points with regard to the respective demands, and determine a combination of the transmission paths that accommodate the demand from the combination candidates of the transmission paths. | 04-10-2014 |
| 20140099113 | Managing Downstream Non-Broadcast Transmission in an Ethernet Passive Optical Network (EPON) Protocol over Coax (EPoC) Network - An OLT comprising an optical port configured to couple to an optical distribution network, a processor coupled to the optical port and configured to generate a DL-MAP based on non-broadcast downstream bandwidth allocations for a plurality of network units, wherein each of the downstream bandwidth allocations is not assigned to all of the network units, generate an EPON MPCP downstream gate message comprising the DL-MAP, and embed the DL-MAP in the EPON MPCP downstream gate message, and a transmitter coupled to the processor and the optical port, wherein the transmitter is configured to transmit the EPON MPCP downstream gate message to the network units via the PON. | 04-10-2014 |
| 20140105602 | STATION-SIDE APPARATUS AND FRAME TRANSFER APPARATUS - Identifier information (LLID) of an ONU and transfer instruction information indicating a transmission system as the output destination of a downstream frame are registered in a table ( | 04-17-2014 |
| 20140112665 | CIRCUIT FOR REALIZING PASSIVATION OF INTELLIGENT OPTICAL DISTRIBUTION INTERFACE DISC IN MACHINE DISC ENABLE MANNER - Disclosed is a circuit for realizing passivation of an intelligent optical distribution interface disc in a machine disc enable manner, which relates to the field of optical communications. In the present invention, a distribution port is separated from distribution management, all management circuits on a distribution interface disc are moved out, and all control and management functions are achieved on a distribution management disc, to enable passivation of a distribution interface disc circuit, i.e. any active electronic devices such as integrated circuits, triodes, etc. which are easily damaged by static electricity and affected by fouling are not placed on the distribution interface disc any longer, and power lines are not introduced in the distribution interface disc. Using the present invention, no matter whether in a fusion-distribution integration or fusion-distribution separation design, during onsite construction, a distribution disc has both strong anti-static capability and fouling-resistant capability. When the fusion-distribution integration design is used, the device cost can be reduced, the device production process can be reduced, and the device performance and the distribution density can be increased. When the fusion-distribution separation design is used, even an optical fibre fusion splice point on the distribution disc generates failure, over-high requirements may not be put forward for maintenance and construction. | 04-24-2014 |
| 20140119732 | Timing Correction for a DOCSIS Edge-Qam - Disclosed are techniques for timing correction for a DOCSIS Edge-QAM. Unlike the DTI required at the headend in existing solutions for DOCSIS Edge-QAM timing, the disclosed techniques may use an Edge-QAM timing deeper in to the network. The N-QAM, referring to an Edge-QAM that is deeper in the network, may be in the optical node configured to convert signals from a network headend or hub for delivery to a subscriber network element. The N-QAM device located in the node may include a local clock for deriving a local time for incoming transport streams, modulating the transport streams onto a downstream carrier for delivery to subscriber network elements using the local clock time, and adjusting the local clock time based on an average value of timestamps in the incoming transport streams. | 05-01-2014 |
| 20140133858 | Method and Apparatus of Managing Bandwidth Allocation for Upstream Transmission in a Unified Optical-Coaxial Network - A method of allocating bandwidth in a network comprising receiving a GATE message allocating a transmission time window in an optical portion of the network to a coaxial network unit (CNU) in a coax portion of the network, and generating a coax network resource map by mapping the transmission time window to communication channel resources in the coax portion of the network; and sending the coax network resource map to the CNU. | 05-15-2014 |
| 20140140700 | METHOD, APPARATUS AND SYSTEM FOR FORWARDING MULTICAST PROGRAM - The present invention provide a method for forwarding a multicast program includes: receiving a multicast join request message requesting an on-demand program from a user; obtaining forwarding decision information according to the multicast join request message; determining a decision result corresponding to the forwarding decision information according to the forwarding decision information and forwarding relation data, where the decision result is forwarding according to PON replication or forwarding according to user replication, the forwarding relation data includes data elements indicating correspondence between various types of forwarding decision information and various types of forwarding modes, and the various types of forwarding modes include the forwarding according to PON replication and the forwarding according to user replication; and forwarding the on-demand program to the user according to the decision result. | 05-22-2014 |
| 20140169792 | APPARATUS AND METHOD FOR ENABLING A PASSIVE OPTICAL NETWORK ON SUPPORTING TIME SYNCHRONIZATION - An apparatus for enabling a passive optical network (PON) having an OLT and at least one ONU on supporting time synchronization is disclosed. The apparatus comprises a timestamp correction module configured to make at least one network delay between the OLT and the at least one ONU of the PON equivalent to an equivalent path delay, wherein the timestamp correction module, through the PON, makes the at least one ONU responsible for modifying the timestamp in at least one PTP packet from the OLT, so that a slave clock at the backend of the at least one ONU is equivalent to synchronizing with a virtual master clock. The disclosure computes and corrects PTP commands so that the PTP clock at an ONU's backend may synchronize precisely with the master clock at an OLT's front end. | 06-19-2014 |
| 20140178072 | OPTICAL LINE TERMINAL AND METHOD OF REGISTERING OPTICAL NETWORK TERMINAL THEREOF - The inventive concept relates to an optical line terminal registering optical network terminals having overlapping serial numbers. The optical line terminal may include a memory storing serial number information of optical network terminals of which a registration is completed in a storage region; and a control part that if a serial number by a serial number request is received from optical network terminals, the received serial number is compared with the serial number information of the memory and if they overlap each other, a previously set preliminary identifier is allocated to the optical network terminal having an overlapping serial number. | 06-26-2014 |
| 20140178073 | OPTICAL TRANSMISSION DEVICE INCLUDING A BIT RATE ADJUSTMENT FUNCTION - An optical transmission device, which transmits a first frame containing second frames, includes newly adding and allocating, when a bit rate of a specific second frame among the second frames is to be changed, a time slot corresponding to an increase in the bit rate of the specific second frame to time slots previously set for the second frames in time slots of the first frame; and inputting a dummy signal as data to the newly-added time slot while performing such a setting that both of: a data writing speed and a data reading speed; and a delay time between writing and reading of the data for the newly-added time slot are in agreement with both of: a data writing speed and a data reading speed; and a delay time between writing and reading of the data for each time slot of the previously-set time slots. | 06-26-2014 |
| 20140178074 | METHOD FOR ACQUIRING PON PORT ASSOCIATION RELATIONSHIP, OPTICAL NETWORK DEVICE, AND OPTICAL NETWORK SYSTEM - The present invention discloses a method for acquiring a PON port association relationship. An OLT where a standby PON port is located receives a protection packet from an optical network unit, parses the protection packet to obtain an identifier of an active PON port carried in the packet, and acquires an association relationship between the active PON port and the standby PON port according to an identifier of the standby PON port receiving the protection packet. When the present invention is implemented, the OLT where the standby PON port is located can acquire an association relationship between an active PON port and a standby PON port, and determine, according to the association relationship, whether the protection packet is valid or acquire, according to the association relationship, configuration information of the active PON port. | 06-26-2014 |
| 20140178075 | METHOD AND APPARATUS FOR TRANSMITTING DATA IN OPTICAL TRANSPORT NETWORK - A method of transmitting data in an optical transport network is provided. The method comprises generating an optical transmission unit frame including an in-band area including a first area to which information data is allocated and a second area to which the information data is not allocated and an out-band area including parity information and transmitting the data through the optical transmission unit frame. | 06-26-2014 |
| 20140186039 | Dynamic Bandwidth Assignment in Hybrid Access Network with Passive Optical Network and Another Medium - An optical line terminal (OLT) configured to receive transmission requests from a plurality of both network elements (NE) and customer premises equipment (CPE), allocate a timeslot to each NE for transmission on an optical distribution network (ODN), and a timeslot to each CPE for transmission on an electrical distribution network (EDN), wherein each NE intermediates between the OLT and the CPEs. Included is a NE configured to transmit a timeslot to a CPE for transmission on an EDN allocated by an OLT, receive data frames from the CPE during the timeslot, and forward the data frames to the OLT without rescheduling. Also included is a method comprising sending a transmission request to an OLT, receiving a timeslot from the OLT for transmission on an EDN in response, transmitting data frames to a NE during the timeslot, wherein the NE forwards the data frames to the OLT without rescheduling. | 07-03-2014 |
| 20140186040 | LIGHT MERGING/BRANCHING DEVICE, BIDIRECTIONAL LIGHT PROPAGATION DEVICE, AND LIGHT TRANSMISSION/RECEPTION SYSTEM - The present invention relates to an optical coupling/splitting device that realizes the splitting of a down-signal and the coupling of up-signals by the same optical device, and reduces coupling losses of the up-signal. An optical coupling/splitting device in the present invention comprises an optical coupling/splitting means for coupling a plurality of up-signals in a multi-mode for output and splitting a down-signal in a single mode for output, and a two-way optical propagation means for propagating the up-signal that is output from the optical coupling/splitting means in a multi-mode for output and propagate the down-signal in a single mode to be output to the optical coupling/splitting means. | 07-03-2014 |
| 20140199069 | IDLE INSERTION FOR PHYSICAL LAYER RATE ADAPTION AND TIME-DIVISION DUPLEXING - A method is performed in a communication device that includes one or more media access control (MAC) entities, a coax physical layer (PHY), and a media-independent interface coupling the one or more MAC entities with the coax PHY. In the method, a bitstream is generated that includes data frames and characters corresponding to time windows in which the coax PHY does not transmit signals. The bitstream is provided to the coax PHY through the media-independent interface. Signals corresponding to the data frames are transmitted from the coax PHY during a transmit mode. The coax PHY enters a receive mode when the bitstream contains the characters corresponding to the time windows. | 07-17-2014 |
| 20140199070 | FRAME SCHEDULING FOR CHANNEL BONDING - In a method of scheduling frames, a first channel of a plurality of channels is selected for a first frame. The first frame is sent across a media-independent interface to a physical-layer device for transmission on the first channel. A data rate of the media-independent interface is greater than a data rate of the physical-layer device for the first channel. After the first frame is sent across the media-independent interface, subsequent sending of frames for the first channel across the media-independent interface is disabled for a period of time that is based at least in part on rate adaption from the data rate of the media-independent interface to the data rate of the physical-layer device for the first channel. | 07-17-2014 |
| 20140199071 | METHOD OF PROCESSING DMX-VLC ADDRESS USING DMX-512 NETWORK AND DEVICE USING THE SAME - The present invention relates to a method of processing a Digital Multiplex (DMX)-Visible Light Communication (VLC) address and a device using the method. In the method of processing a DMX-VLC address, a DMX-512 packet is received. It is determined whether the DMX-512 packet includes dimming data by using a start code of the DMX-512 packet. Lighting data is processed using an address recorded in a DMX-512 address field of a DMX-VLC address included in the DMX-512 packet if it is determined that the DMX-512 packet includes the dimming data. Non-lighting data is processed using an address recorded in a DMX-VLC extended address field of the DMX-VLC address if it is determined that the DMX-512 packet does not include dimming data. | 07-17-2014 |
| 20140205294 | Integrating Optical Fiber with Coaxial Cable - Certain embodiments herein relate to a hybrid cable that includes a center conductor for disturbing electrical signals and one or more optical fibers adjacent to the center conductor for distributing light signals in a service provider network. According to one configuration, materials found in a coaxial cable may be included in the hybrid cable, such as a dielectric material, one or more protective shields, and an outer protective core. Such a hybrid cable may be utilized to replace drop cables in a service provider network, which may connect an access point, such as a tap, to a customer location. Certain embodiments herein may also relate to making and installing the hybrid cable. | 07-24-2014 |
| 20140205295 | System and Method for Carrying Control Data in a Preamble - A system and method for carrying control data in a preamble. A control-data bearing preamble is defined to facilitate end-to-end labeling and control-data transport. This control-data bearing preamble provides a unified labeling scheme with minimal overhead, which facilitates greater ease in parsing. The control-data bearing preamble can be converted to/from other control/labeling schemes at the edge of the control-data bearing preamble aware portion of the network. | 07-24-2014 |
| 20140212138 | OPTICAL ACCESS NETWORK HAVING EMITTER-FREE CUSTOMER PREMISE EQUIPMENT AND ADAPTIVE COMMUNICATION SCHEDULING - An access network includes an access device having an optical interface module that outputs a plurality of pairs of optical communication signals, each of the pairs of optical communication signals comprising a modulated optical transmit signal and an unmodulated optical receive signal, each of the pairs of optical communication signals having a different wavelength. A customer premise equipment (CPE) comprises an optical interface module to receive the modulated optical transmit signal and the unmodulated optical receive signal for any of the plurality of pairs of optical communication signals. The optical interface module includes a receive module to demodulate the modulated optical transmit signal into inbound symbols and a transmit module having an optical modulator and reflective optics to modulate the unmodulated optical receive signal in accordance with a data signal and reflect a modulated optical receive signal to communicate outbound data symbols to the access device. | 07-31-2014 |
| 20140212139 | PON SYSTEM, STATION SIDE DEVICE AND METHOD FOR OPERATING THE SAME, AND ACCESS CONTROL DEVICE - The present invention relates to a station side device having a plurality of PON lines and connected thereto. A fallback mode where a partial access control unit is not allowed to communicate communication frames is performed by switching an upper switch and a lower switch in the manner shown in the following (a) and (b): (a) output destinations of downstream frames to the first and second PON lines and inputted to the upper switch are aggregated into a first access control unit, and output destinations of the downstream frames inputted from the first access control unit to the lower switch are distributed to first and second optical transmitting and receiving units and; and (b) output destinations of upstream frames inputted from the first and second optical transmitting and receiving units and to the lower switch are aggregated into the first access control unit. | 07-31-2014 |
| 20140219659 | METHOD OF ALLOCATING UPSTREAM BANDWIDTH RESOURCE AND METHOD OF TRANSMITTING UPSTREAM DATA IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS-OPEN OPTICAL SUBSCRIBER NETWORK - There are provided a method of allocating upstream bandwidth resources and a method of transmitting upstream data in an orthogonal frequency division multiple access-open optical subscriber network. The method of allocating an upstream bandwidth resource according to an embodiment of the invention includes receiving queue status information from each optical network unit (ONU), and allocating an upstream bandwidth by providing to each ONU a 2-D upstream bandwidth map on a subcarrier-time resource through a frame synchronized at constant cycles, based on the queue status information received from each ONU. | 08-07-2014 |
| 20140233950 | Downstream Burst Transmission In Passive Optical Networks - An OLT comprising a processor configured to calculate a downstream bandwidth map that indicates an active period of time when the OLT is scheduled to transmit a data frame to an ONU, and generate a message comprising the downstream bandwidth map, and a transmitter coupled to the processor and configured to send the message to the ONU via a PON, wherein the message instructs the ONU to power off at least one ONU receive data processing unit outside the active period. Also disclosed is a computer program product comprising computer executable instructions stored on a non-transitory computer readable medium such that when executed by a processor cause an ONU to receive a message indicating an active period, wherein the active period indicates a scheduled period during which data communicated over a PON is relevant to the ONU and power down an ONU receive data processing unit outside the active period. | 08-21-2014 |
| 20140248053 | OPTICAL NETWORK UNIT REGISTRATION METHOD AND OPTICAL NETWORK SYSTEM - An optical network unit registration method registers an unregistered optical network unit in a network that includes an optical line terminal having a plurality of optical subscriber units that allocate different wavelengths from one another, and a plurality of optical network units including a variable wavelength filter and configured to connect to the optical line terminal via one or more optical transmission paths. The optical network unit registration method includes a transmitting a wavelength notification signal that indicates a wavelength for the variable wavelength filter to one or more optical network units, a setting a transmission wavelength for the variable wavelength filter based on the wavelength that wavelength notification signal indicates, and a registering an unregistered optical network unit that receives the wavelength notification signal. | 09-04-2014 |
| 20140248054 | DOCSIS PROTOCOL-BASED ACCESS METHOD, APPARATUS, AND SYSTEM - Various embodiments of the present invention disclose a DOCSIS protocol-based access method, apparatus, and system. A first PON physical layer module is disposed inside or outside a CMTS device; the CMTS device receives DOCSIS protocol-based data, converts the DOCSIS protocol-based data into PON physical layer format-based data by using the first PON physical layer module, and sends the PON physical layer format-based data to a CMC through an optical distribution network; and the CMC receives the PON physical layer format-based data, converts the PON physical layer format-based data into DOCSIS physical layer format-based data, and sends the converted data to a terminal device. The solution provided by various embodiments of the present invention is applicable to a DOCSIS system. | 09-04-2014 |
| 20140255028 | SUB-RATE MAPPING FOR LOWEST-ORDER OPTICAL DATA UNIT - One embodiment relates a method for communicating data using an optical transport network. Multiple sub-rate client data signals are received from client sources. The sub-rate client data signals each have a data rate which is less than a data rate capacity of a lowest-order data unit. A predetermined number of tributary slots are provided in the lowest-order optical channel data unit, and each sub-rate client data signal are mapped to at least one of the tributary slots. Another embodiment relates to an optical data communication server that includes a sub-rate mapper for mapping multiple sub-rate client data streams to a predetermined number of tributary slots. Other embodiments and features are also disclosed. | 09-11-2014 |
| 20140255029 | ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING BURST MARKERS - A coax network unit (CNU) receives downstream bursts from a coax line terminal (CLT) and transmits upstream bursts to the CLT. The downstream bursts include start markers that indicate the beginnings of the downstream bursts and may also include pilot symbols. The downstream bursts are continuous across available resource elements in a matrix of subcarriers and orthogonal frequency-division multiplexing (OFDM) symbols. The available resource elements exclude resource elements in the matrix that carry the pilot symbols. The upstream bursts may include start markers indicating the beginnings of the upstream bursts and end markers indicating the ends of the upstream bursts. Respective upstream bursts are transmitted in respective groups of one or more resource blocks allocated to the CNU. | 09-11-2014 |
| 20140270770 | Passive Optical Networking Redundancy Via Two or More Auto Sensing Optical Line Terminals - An embodiment of the invention provides communications services to Optical Network Terminals (ONTs) in a Passive Optical Network (PON) with at least two Optical Line Terminals (OLTs). The role of these OLTs is autonomously governed based on characteristics of upstream signals from the ONTs. When an OLT in a standby mode determines that upstream signal power is below a power threshold, the OLT in standby mode changes its mode and operates in the active mode. An OLT in active mode monitors the upstream signals and determines the number of upstream signals that are misaligned to a respective downstream command sent from the active OLT. When the number of misaligned signals is greater than a counts threshold, the active OLT switches its operation and operates in standby mode. Through autonomous operation, the OLTs provide redundancy for the PON without added control channel complexity. | 09-18-2014 |
| 20140270771 | Network Server Layer Providing Disjoint Channels in Response to Client-Layer Disjoint Path Requests - In one embodiment, a network server layer provides disjoint channels in response to client-layer disjoint path requests. For example, the network layer can be an optical network, and the client layer may be a packet switching layer (e.g., label switching, Internet Protocol). In one embodiment, a server-layer node receives a client-layer disjoint path request to provide a server-layer channel through a server-layer network. The client-layer disjoint path request includes an identifier corresponding to an existing client-layer path that traverses a current channel through the server-layer network that does not include the server-layer node. The server-layer network determines a particular channel through the server-layer network that is disjoint to the current channel based on route information of the current channel, and then signaling is performed within the server-layer network to establish the particular channel. | 09-18-2014 |
| 20140270772 | Method and Apparatus for Identifying a Port in a Passive Optical Network - Typical passive optical networks (PONs) employ several optical network terminals (ONTs) connected to an optical line terminal (OLT) via an optical splitter/combiner (OSC). Due to the passive nature of the OSC, determining a port assignment of an ONT may be difficult or impossible. Methods described herein provide for identifying a port in a passive optical network, optionally as corresponding to an ONT. A first subset of the ONTs is caused to transmit a first signal, such as a status signal, with a respective attribute having a first value, and a second subset of the ONTs is caused to transmit a second signal with the respective attribute having a second value. At the OSC, the signals are detected as a function of the attribute and the first and second values. Results of this detection are reported, from which an identification of a port and associated ONT can be determined. | 09-18-2014 |
| 20140270773 | FLASHLESS OPTICAL NETWORK UNIT - A system, method, and computer program product for a flashless optical network unit (ONU) in a Passive Optical Network (PON) are provided herein. The method includes the steps of synchronizing on a downstream signal of an optical line terminal (OLT), receiving a first software from the OLT for its operation on a reserved downstream channel of the OLT, and storing the received first software in a volatile memory. The ONU does not pre-store the first software in a non-volatile memory. | 09-18-2014 |
| 20140286639 | METHOD FOR DATA COMMUNICATION IN OPTICAL NETWORK SYSTEM, OPTICAL LINE TERMINAL, AND OPTICAL NETWORK SYSTEM - The present invention provides a method: sending a downlink message to an optical network terminal through a first port of an optical line terminal; receiving, from a second port of the optical line terminal, an uplink message returned by the optical network terminal; obtaining a second time of receiving the uplink message, and obtaining a first time when the uplink message reaches the first port; according to the first time and the second time, obtaining an equalized delay from the second port to the optical network terminal; and after the optical line terminal is switched from the first port to the second port, delivering, by the optical line terminal, the equalized delay from the second port, and performing data communication with the optical network terminal through the second port. In the present invention processing time is decreased to a maximum extent, and stability of the system is improved. | 09-25-2014 |
| 20140294388 | DYNAMIC BANDWIDTH ALLOCATION METHOD, OLT, AND PON SYSTEM - In a PON system in which plural kinds of modulation schemes coexist, when uplink burst signals from respective ONUs are received, the receiving efficiency degrades as the number of the times of switching of the modulation scheme increases. In an optical access (PON) system supporting plural kinds of modulation schemes, an OLT allocates bandwidths for uplink signals, i.e., transmission timings each including a transmission start time and a transmission duration, to ONUs, respectively, such that the bandwidths allocated to plural ONUs for the same modulation scheme are as successive as possible. Based on the transmission timings allocated to the respective ONUs, the OLT switches the modulation scheme of a modulation-scheme variable burst-mode optical transmitter/receiver by control of a modulation scheme controller. | 10-02-2014 |
| 20140321855 | ONT CONNECTED TO A HOST DEVICE - Communication between an ONT ( | 10-30-2014 |
| 20140328593 | Synchronization and Control Using Out-of-Band Channels in Passive Optical Network-Based Systems - Systems and methods are provided to use of out-of-band (OOB) channels for the transport of network-synchronization signals and network control information. These OOB channels transport synchronization and control channels over low-frequency bands outside of the frequency bands used for the data channels. Locating expensive network-synchronization functions in the optical network unit (ONU) and sharing the derived synchronization signals among multiple downstream customer premises equipment (CPE) devices results in cost savings and provides a means for maintaining a continuous, end-to-end synchronization reference, even during periods when the data channels on the copper network segment are in an energy-efficiency mode (e.g., a low-power and/or sleep mode). | 11-06-2014 |
| 20140341577 | Ethernet Passive Optical Network Over Coaxial (EPoC) System Rate Mechanism - An Ethernet passive optical network over coaxial (EPOC) system rate mechanism. A network device is provided that includes a physical layer device (PHY) that is configured for coupling to a coaxial cable, a medium independent interface that facilitates data transmission at 10 Gbit/s or greater, and a reconciliation sublayer that is coupled to the PHY via the medium independent interface. The reconciliation sublayer has a codeword detector that is configured to detect a reserved codeword that is received from the PHY over the medium independent interface. The codeword detector can be configured to forward a rate control signal to a media access control (MAC) based on the detection of the reserved codeword. | 11-20-2014 |
| 20140355988 | COMMUNICATION CONTROL DEVICES AND METHOD - There is provided a communication control device including a communication control processing portion that performs at least one type of communication control processing when a control signal that requests a response signal is received from a partner device, a transmission processing portion that transmits the response signal to the partner device after the processing that the communication control processing portion performs when the control signal is received from the partner device, a processing time measurement portion that measures time that is consumed by the processing by the communication control processing portion, and a processing content setting portion that, based on the measured processing time that has been measured by the processing time measurement portion and on a response processing time for the response to the control signal, sets content of processing that the communication control processing portion will be made to perform within the response processing time. | 12-04-2014 |
| 20140369687 | DEVICE AND METHOD FOR PROVIDING POWER TO OPTICAL NETWORK UTILITIES - Disclosed is a device ( | 12-18-2014 |
| 20140369688 | SYSTEMS AND METHODS FOR SHARING OF OPTICAL NETWORK TERMINALS IN PASSIVE OPTICAL NETWORK - The system of the present invention includes a plurality of ONTs adapted to provide multiple voice and data related services to different subscribers. Each of the plurality of ONTs comprises at least one receiver adapted to receive optical signals, a de-multiplexer to de-multiplex the optical signal into component signals, at least one transmitter and at least one output port. Further, the system includes a plurality of routers operatively coupled to the each of the plurality of ONTs. Furthermore, the system includes a plurality of subscriber devices communicably coupled to each of the plurality of routers. The subscriber devices are adapted to receive the de-multiplexed component signals routed by the corresponding router and provide data and voice services to the particular subscriber. Each of the ONTs configures separate domains for each of the routers operatively coupled thereto so as to enable sharing of the ONT. | 12-18-2014 |
| 20150016821 | CONTENT DISTRIBUTION SYSTEM - A content distribution system may include a headend server and media converters, the headend server being configured to distribute content items to user devices via the media converters and gateway devices. Each of the media converters may include a media converter cache and may be coupled to the headend server and a subset of the gateway devices, where each of the user devices is communicatively coupled to one of the gateway devices. The headend server may be further configured to determine one of the content items that is expected to be requested by a group of the user devices, determine one of the media converters that is coupled, via the subset of the gateway devices, to a largest number of user devices in the group of the user devices, and coordinate storing the one of the content items in the media converter cache of the one of the media converters. | 01-15-2015 |
| 20150037035 | NETWORK SYSTEM - Provided is a network system including a subscriber apparatus and a station-side apparatus connected with the subscriber apparatus via an optical line. The subscriber apparatus includes a transceiver for receiving an instruction to change wavelengths for signals to be sent and received, receiving a downstream signal sent from the station-side apparatus and having a wavelength designated by the instruction, and sending an upstream signal having a wavelength designated by the instruction to the station-side apparatus. The subscriber apparatus includes a controller for identifying at least one property of the received downstream signal and determining wavelengths for signals to be sent and received based on the identified at least one property. | 02-05-2015 |
| 20150037036 | Scalable Optical Broadcast Interconnect - A modular interconnect includes an mn-by-mn fully connected, direct broadcast, point-to-point, all-to-all interconnect fabric, wherein the mn-by-mn fully connected, direct broadcast, point-to-point, all-to-all interconnect fabric is non-blocking and congestion free, and wherein m is an integer≧2 and n is an integer≧2. Operating the modular interconnect includes distributing each of mn inputs to each and every one of mn outputs. | 02-05-2015 |
| 20150050021 | Remote Modulation of Pre-Transformed Data - Methods, systems, and computer readable media can be operable to facilitate the remote modulation of pre-transformed data. In embodiments, a CMTS can provide pre-transformed data in the frequency domain to a transmitter or receiver. Multiple network components can be bypassed when pre-transformed data is delivered directly to a transmitter or receiver, thus improving the amount of network capacity and available network resources. In embodiments, pre-transformed data can be transformed and modulated at a receiver. | 02-19-2015 |
| 20150063811 | CENTRAL-OFFICE TERMINATION APPARATUS OF ADAPTIVELY CHANGING CONNECTION TO SUBSCRIBER-TERMINAL TERMINATOR AND PATH SWITCHING METHOD - A central-office termination apparatus includes plural termination devices and a termination device distributor. Each termination device includes a buffer, a subscriber-terminal terminator distributor and a scheduler. The buffer has a through queue and one or more switching queues. The subscriber-terminal terminator distributor transfers a packet meant for one subscriber-terminal terminator under switching to the switching queue, and transfers another packet meant for another subscriber-terminal terminator not under switching to the through queue. The scheduler reads out packets from the switching and through queues. The termination device distributor transfers a received packet to a termination device having the subscriber-terminal terminator registered for which that packet is meant. | 03-05-2015 |
| 20150093112 | Optical Distribution Method, Device, and System - The present invention provide an optical distribution method that includes determining, a first optical distribution frame and a second optical distribution frame, and generating first port indication information and second port indication information according to fiber patch cord setting information; and sending the first port indication information to the first optical distribution frame, sending the second port indication information to the second optical distribution frame, receiving a first port identity and a fiber patch cord identity corresponding to the first port identity which are sent by the first optical distribution frame, and receiving a second port identity and a fiber patch cord identity corresponding to the second port identity which are sent by the second optical distribution frame. | 04-02-2015 |
| 20150093113 | METHOD AND APPARATUS FOR MAPPING AND DE-MAPPING IN AN OPTICAL TRANSPORT NETWORK - The embodiments of the present invention disclose methods and apparatuses for mapping processing and de-mapping processing in an optical transport network. A Lower Order Optical Channel Data Unit (LO ODU) signal is mapped into a payload area of an Optical Channel Data Tributary (ODTU) signal in units of M bytes. M is equal to the number of tributary slots of a Higher Order Optical Channel Payload Unit (HO OPU) that are to be occupied by the ODTU signal, and M is an integer larger than 1. Overhead information is encapsulated to an overhead area of the ODTU signal. Thereafter, the ODTU signal is multiplexed into the HO OPU. In this way, an efficient and universal mode for mapping the LO ODU to the HO OPU is provided. | 04-02-2015 |
| 20150098702 | TRANSMISSION DEVICE, TRANSMISSION SYSTEM, AND TRANSMISSION METHOD - A transmission device that is coupled to a mesh network includes a memory, and a processor coupled to the memory, configured to detect an another transmission device in the mesh network, which receives a first data signal that is same as a second data signal requested to the transmission device, and branch the first data signal to the transmission device from the detected another transmission device. | 04-09-2015 |
| 20150098703 | Method and Apparatus for Transmitting and Receiving Client Signal - Embodiments of the present invention provide a method and an apparatus for transmitting and receiving a client signal, and relate to the field of communications technologies. The method includes: mapping the client signal into channels of a parallel transmission frame, where the parallel transmission frame includes at least two channels; adding an overhead for the channels of the parallel transmission frame after the mapping, to form transmission channels of the parallel transmission frame, where bit rates of the transmission channels of the parallel transmission frame are fixed; and modulating the transmission channels of the parallel transmission frame onto one or more optical carriers in a same optical fiber, and transmitting the optical carrier after the modulation. | 04-09-2015 |
| 20150139650 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CLIENT SIGNAL IN OPTICAL TRANSPORT NETWORK - Embodiments of the present invention provide a method and an apparatus for transmitting and receiving a client signal in an optical transport network. In the transmission method, a received client signal is mapped into a variable-rate container OTU-N, wherein a rate of the OTU-N is N times as high as a preset reference rate; and then, the variable-rate container OTU-N is split into N optical sub-channel transport units OTUsubs by column, where a rate of each OTUsub equals to the reference rate; next, the N optical sub-channel transport units OTUsubs are modulated onto one or more optical carriers; at last, the one or more optical carriers is transmitted through a fiber. | 05-21-2015 |
| 20150147061 | COMBINATION CUSTOMER SPLICE POINT MODULE AND OPTICAL NETWORK TERMINAL MOUNT - The specification described a multifunction CSP (MCSP), and a MCSP/ONT assembly that is adapted for mounting inside the customer premises. In the MCSP/ONT assembly the MCSP subunit and the ONT subunit are stacked and attached directly together. The MCSP/ONT assembly combines the functions of the standard CSP box and the ONT box, thus eliminating the need for the building cable. In addition the MCSP subunit is adapted to integrate more than one ONT in the MCSP/ONT assembly. The MCSP subunit comprises a back box, a splice tray, and a cover. | 05-28-2015 |
| 20150304037 | Ethernet Passive Optical Network Over Coaxial (EPOC) - Embodiments of the present invention exploit the existing capabilities of the Ethernet Passive Optical Network (EPON) MAC layer, designed for fiber optics communications, to provide a low cost MAC layer with upper layer connectivity over a hybrid fiber coaxial (HFC) network. In particular, embodiments allow for the EPON MAC to be used end-to-end (i.e., from an optical line terminal (OLT) to a coaxial network unit (CNU)) in a HFC network, thereby fully leveraging the packet processing capabilities, QoS functions, and management features of the EPON MAC. Furthermore, embodiments enable unified provisioning and management for both fiber and coaxial network units in a HFC network. | 10-22-2015 |
| 20150304046 | Probabilistic Bandwidth Control in a Passive Optical Network (PON) - Embodiments provide systems and methods for a probabilistic reporting mode, where an Optical Network Unit (ONU) sends a REPORT message only when it has data to transmit. The absence of a REPORT message from an ONU is treated by the Optical Line Terminal (OLT) as indicating absence of data to transmit at the ONU. In another aspect, embodiments include systems and methods for an unsolicited burst mode, where an ONU can be configured to transmit data in the upstream in an unsolicited manner. The unsolicited burst mode includes mechanisms to ensure that no data is lost due to potential collisions between ONUs. | 10-22-2015 |
| 20150312792 | ENHANCED SELF-ORGANIZING NETWORK SWITCHING MATRIX - Automated control of simulcast ratios based on network traffic data provides efficient network capacity management. In one aspect, a remote switching matrix can be utilized at a venue to couple remote transceiver units (RTUs) with different antenna ports, for example, of one or more multi-beam antennas deployed at the venue. A simulcast ratio that can be utilized to support traffic demand at the venue can be determined and implemented by creating dynamic connections between the RTUs and the antenna ports. In one aspect, the simulcast ratio can be modified based on changes in network traffic at the venue that are monitored via self-organizing network devices. In addition, one or more antenna beams of the multi-beam antennas are remotely steered or rotated based on a location of the traffic. | 10-29-2015 |
| 20150326405 | MULTICAST TRAFFIC BRIDGING - A fiber-coax unit (FCU) is coupled to an optical line terminal (OLT) and a plurality of coax network units (CNUs). The FCU receives a multicast frame from the OLT. The multicast frame includes a first multicast logical link identifier (LLID) dedicated for multicast traffic directed to CNUs. The FCU replaces the first multicast LLID in the multicast frame with a second multicast LLID corresponding to one or more multicast groups that include at least one CNU of the plurality of CNUs. The FCU transmits the multicast frame to the plurality of CNUs. | 11-12-2015 |
| 20150333834 | Exploiting Frequency Diversity on a Sub-band Basis for Optical Transmission Performance Enhancement - An optical data transmission method comprising partitioning an optical signal into a plurality of frequency sub-bands, generating a signal frequency mapping that rearranges the plurality of frequency sub-bands, choosing a plurality of frequency components based on the signal frequency mapping to form a set of frequency components, and transmitting the set of frequency components using frequency diversity transmission. An optical data receiving method comprising obtaining a signal frequency mapping for an original signal, receiving an optical signal that comprises a plurality of frequency sub-bands, re-arranging the plurality of frequency sub-bands using the signal frequency mapping to generate a restored original signal, and processing the restored original signal to recover an original data sequence. | 11-19-2015 |
| 20150349892 | INTEGRATED ANALOG AND DIGITAL DISTRIBUTED ANTENNA SYSTEM (DAS) UTILIZING AN ALL FIBER OPTIC NETWORK - A system includes: hub configured to receive respective signal from one or more network devices, wherein hub is configured to convert combined signal containing respective signal from each network device into digital radio frequency (RF) signal; remote unit coupled to hub over first optical fiber communication medium to receive from hub optical signal representing digital RF signal, wherein remote unit is configured to recover digital RF signal from optical signal and to convert digital RF signal to analog RF signal; antenna unit coupled to remote unit over second optical fiber communication medium to receive from remote unit second optical signal representing at least portion of analog RF signal, wherein antenna unit is not co-located with remote unit; and antenna coupled to and co-located with antenna unit, wherein antenna is configured to radiate signal from frequency band in analog RF signal recovered by antenna unit from second optical signal. | 12-03-2015 |
| 20150350755 | Method And Apparatus For The Management Of Remote Nodes In A Communication Network - A manner of performing remote-node management, for example the management of ONUs in a PON. In that type of optical network, a management node such as an OLT determines that a management command is to be transmitted and also determines the management protocol associated with the management command. A management message is generated, the management message having a header with a device identifier field. When the management message is generated, the device identifier field is populated with a value indicating whether the management command is associated with a default protocol or with an alternate protocol. The value in the device identifier field may identify specific alternate protocols so that when the manage device, for example an ONU in a PON, received the management message it may be directed to an appropriate interface point. | 12-03-2015 |
| 20150365192 | METHOD OF TUNING WAVELENGTH OF TUNABLE OPTICAL NETWORK UNIT (ONU) IN TIME AND WAVELENGTH DIVISION MULTIPLEXING-PASSIVE OPTICAL NETWORK (TWDM-PON) - A method of tuning a wavelength of a tunable ONU in a TWDM-PON is provided. The method includes transmitting a wavelength change request message from a source OLT to request the ONU to change a wavelength thereof from a first wavelength to a second wavelength and in response to the wavelength change request message, transmitting a wavelength change response message from the ONU to the source OLT to indicate whether or not the ONU can change a wavelength thereof. The wavelength change request message is ID information for specifying an ONU that is requested to change a wavelength thereof, and the message may comprise one of the following: system ONU ID, channel ONU ID, and individual ONU ID. | 12-17-2015 |
| 20160006510 | Method for prolonging transmission distance of passive optical network system and optical line terminal - Disclosed are a method for prolonging the transmission distance of a passive optical network system and an optical line terminal. The method includes: acquiring each EDC tap coefficient corresponding to each ONU; and according to the each EDC tap coefficient corresponding to the each ONU, performing dispersion compensation respectively on an uplink signal sent from the each ONU. Thus the dispersion suffered by ONUs at different transmission distances can be pertinently compensated, so that the transmission distance of the system can be effectively prolonged. | 01-07-2016 |
| 20160070081 | Cable Distribution Device for Optical Network - The present invention discloses a cable distribution device for an intelligent optical distribution network (iODN), comprising a tray and a cable distribution structure for the iODN, where the tray is provided with multiple first interfaces, the cable distribution structure for the iODN includes multiple attachment plates, an upper cover, a circuit board, and a bottom cover, the circuit board is installed on the upper cover, the upper cover is installed on the bottom cover, one end of each attachment plate is installed on the bottom cover, and the other end of each attachment plate is inserted into the first interface of the tray. the cable distribution structure for the iODN may be installed on a tray by using attachment plates, so that an existing ODN can be transformed into an iODN without transforming a structure of the tray and interrupting an optical fiber transmission service. | 03-10-2016 |
| 20160072588 | Method And Apparatus For Processing A Communication Signal In An Optical Communication Network - A method and apparatus for processing a communication signal in an optical network. A network node typically includes a transmit train for generating transmissions and a receive train for receiving transmissions from another network node. The network node may be, for example, an OLT or an ONU. In a receiver implementing the described solution, a photodiode is employed to convert received optical signals into electrical signals that are then provided to a TIA or other device for producing a differential output having an inverted output and a non-inverted output. One of the outputs is delayed one bit and attenuated, then combined with the other output to produce an equalized signal for further processing by the receive train. The solution may be analogously applied on the transmit side for introducing pre-distortion, either in addition to or in lieu of in the receiver. | 03-10-2016 |
| 20160080110 | PRECISION TIME TRANSFER SYSTEMS AND METHODS IN OPTICAL NETWORKS - A precision time transfer method, in a first node that communicates with a second node, to determine a difference in time between the first node and the second node, the precision time transfer method includes receiving a departure time, T | 03-17-2016 |
| 20160080208 | MASTER STATION DEVICE, SLAVE STATION DEVICE, OPTICAL COMMUNICATION SYSTEM, CONTROL DEVICE, AND BANDWIDTH ALLOCATION METHOD - Included are a report-frame analysis unit that extracts a requested bandwidth from a report frame; an upload-bandwidth calculation unit that calculates the upload bandwidth; a residual-time calculation unit that acquires the residual time of each LLID before an allowable delay time; a priority calculation unit that acquires a priority of a data request corresponding to the report frame on the basis of the residual time; a report-request registration unit that generates a report request requesting allocation of an upload bandwidth for a report frame and that decides the priority of the report request; an allocation-order reading unit that decides the allocation order for the data request and the report request on the basis of the priority; and a gate-frame creation unit that decides a transmission-permitted time slot for each LLID on the basis of the allocation order and the upload bandwidth and that creates a gate frame. | 03-17-2016 |
| 20160087750 | METHOD AND APPARATUS FOR TRANSMITTING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SIGNAL IN OPTICAL NETWORK - A method for transmitting an orthogonal frequency division multiplexing (OFDM) signal in an optical network and apparatus therefor are provided. The method includes: converting a media access control (MAC) frame into an OFDM frame that contains a physical (PHY) level preamble, using the MAC frame which is transmitted from a MAC layer in a passive optical network (PON) to a PHY layer in an OFDM-PON; and transmitting the generated OFDM frame. | 03-24-2016 |
| 20160087786 | MULTILEVEL MODULATION OPTICAL TRANSCEIVER AND MULTILEVEL MODULATION OPTICAL TRANSMISSION AND RECEPTION METHOD - A multilevel modulation optical transceiver for distributing an OTN frame defined by ITU-T to a plurality of lanes for transmission, the multilevel modulation optical transceiver including: an MLD transmission unit; and a data replication unit, further including a data rearrangement unit arranged at a preceding stage of the MLD transmission unit, for performing data rearrangement processing of replicating, in advance, a frame synchronization pattern of an overhead of the OTN frame before being subjected to the lane rotation processing from a first lane that has the overhead to another lane that does not have the overhead, and of saving a payload to be overwritten with the frame synchronization pattern to a reserved area of the overhead to enable the payload to be restored on a reception side. | 03-24-2016 |
| 20160112136 | OPTICAL DEVICE, OPTICAL DISTRIBUTION NETWORK AND RESPECTIVE METHODS PERFORMED THEREBY - An optical device, OD, for partitioning a received signal and outputting the partitions via two outputs. An optical distribution network comprising at least two Optical Network Terminations, ONTs, the ONTs being connected to the CO by the fibre ring structure, wherein each ONT is connected to the fibre ring structure by means of a respective OD is provided. The OD has a first port, a second port and a third port, each port being operable as both an input and an output interface. The first and second ports are adapted to receive an input signal, to split the signal and to output a first respective portion of the received signal through the second or first port respectively and to output a respective second portion of the received signal through the third port, the first portion of the received signal being larger than the second portion of the received signal. | 04-21-2016 |
| 20160191346 | SUSPENSION OF TRAFFIC RE-ROUTING DURING PLANNED NETWORK INTERRUPTION - A transport management system receives a request for a planned interruption in an optical network, and identifies transport equipment of the optical network affected by the planned interruption. The transport management system selectively sends a notification, from the network device, the identified transport equipment affected by the planned interruption, including a scheduled time of the planned interruption and a duration associated with the planned interruption, where the notification enables the notified transport equipment to buffer data to be transmitted on links affected by the planned interruption for the notified duration of the planned interruption. | 06-30-2016 |
| 20160204895 | METHOD AND APPARATUS FOR MAPPING AND DE-MAPPING IN AN OPTICAL TRANSPORT NETWORK | 07-14-2016 |
| 20170237582 | Auto-Discovery of Packet Islands Over GMPLS-UNI | 08-17-2017 |
