Patent application number | Description | Published |
20110320905 | Data Sending/Receiving Method with Forward Error Correction and Related Component and System for Gigabit Ethernet - A method for sending data from a transmitter to a receiver in a transmission network comprising receiving outgoing data that is eight-bits-ten-bits (8b10b) encoded at a Gigabit Ethernet (GE) line rate from a physical medium attachment (PMA) layer, 8b10b decoding the received outgoing data, 64-bits-to-66-bits (64b66b) encoding the 8b10b decoded outgoing data, forward error correction (FEC) encoding the 64b66b encoded outgoing data, and serializing and sending the 64b66b and FEC encoded outgoing data at the GE line rate to a physical medium dependent (PMD) layer. | 12-29-2011 |
20120014693 | Passive Optical Network with Adaptive Filters for Upstream Transmission Management - A wavelength division multiplexing passive optical network (WPON) comprising an optical line terminal (OLT) and a plurality of optical network units (ONUs) coupled to the OLT via a power optical splitter. The OLT is configured to monitor wavelengths in use by the ONUs and to divide upstream traffic from the ONUs into multiple channels using tunable filters. Also disclosed is an OLT for a PON, the OLT comprising a plurality of receivers and a plurality of tunable filters corresponding to each of the receivers. The OLT also comprises channel control logic coupled to the tunable filters, wherein the channel control logic is configured to detect a plurality of wavelengths in use for upstream traffic in the PON and to divide the upstream traffic into multiple channels using the tunable filters. Included is a method for managing upstream traffic in a PON, the method comprising monitoring, by a processor, wavelengths in use for upstream traffic in the PON. The method also comprises dividing the upstream traffic into multiple channels using tunable filters. | 01-19-2012 |
20120027402 | In-Band Optical Frequency Division Reflectometry - An apparatus comprising an optical transmitter coupled to an optical fiber, and an optical receiver coupled to the optical fiber, wherein the transmitter is configured to transmit a test signal data pattern and user data into the optical fiber, and wherein the receiver is configured to receive a reflection of the test signal data pattern. Also disclosed is a network component comprising a processor configured to implement a method comprising promoting the transmission of an optical test signal data pattern into an optical fiber, wherein the test signal data pattern creates a radio frequency (RF) tone, and detecting a reflection of the RF tone in the optical fiber. | 02-02-2012 |
20120045200 | Upgraded Bandwidth Map for Ten Gigabit Passive Optical Network - An apparatus comprising an optical line terminal (OLT) configured to transmit a bandwidth map (BWmap) for a plurality of burst signals to be transmitted by a plurality of optical network units (ONUs), wherein the BWmap comprises a plurality of allocations, and wherein each allocation comprises a start time for the allocation, a grant size for the allocation, and a header error correction (HEC) for the allocation. | 02-23-2012 |
20120185748 | Method and Apparatus for Applying Forward Error Correction in 66B Systems - A method and apparatus for applying Forward Error Correction (FEC) in 66b systems. For a user data, the apparatus uses a method comprising the steps of generating one or more data blocks using a 66b code format and the user data; generating one or more FEC parity blocks using the 66b code format, wherein the parity is calculated over the data blocks; and generating an FEC codeword using the data blocks and the FEC parity blocks. | 07-19-2012 |
20120218992 | Scrambler Offsetting Packet Transport - In at least some embodiments, a network component includes pre-transmit logic and a transmitter. The pre-transmit logic is configured to determine whether a scrambling sequence for a packet complies with at least a threshold line pattern criteria. If not, the pre-transmit logic delays transmission of the packet to at least partially offset the scrambling sequence used for the packet. | 08-30-2012 |
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 |
20130094861 | Wavelength Indication in Multiple-Wavelength Passive Optical Networks - An apparatus of a passive optical network (PON) comprising an optical line terminal (OLT) component configured to couple to an optical network unit (ONU) and send downstream wavelength identification to the ONU to indicate a wavelength that corresponds to the ONU, wherein the downstream wavelength identification is transmitted using a Media Access Control (MAC) layer frame for an embedded channel, a control message channel, or a data channel. Also included is an apparatus of a PON comprising an ONU component configured to couple to an OLT and send upstream wavelength feedback to the OLT to indicate a wavelength that corresponds to the ONU, wherein the upstream wavelength feedback is transmitted using a MAC layer frame for an embedded channel, a control message channel, or a data channel. | 04-18-2013 |
20130094862 | Wavelength Management in Multiple-Wavelength Passive Optical Networks - A system for supporting wavelength management in a passive optical network (PON), comprising an optical line terminal (OLT) configured to send an wavelength assignment for optical network unit (ONU) communications based on a wavelength tunability capability, and an ONU coupled to the OLT and configured to send the wavelength tunability capability to the OLT, wherein the wavelength assignment and the wavelength tunability capability are sent in media access control (MAC) messages. Also disclosed is an apparatus of an OLT for supporting wavelength management, comprising one or more component configured to couple to an ONU and exchange a wavelength assignment for transmission with the ONU based on a wavelength tunability of the ONU, wherein the wavelength indication and the wavelength tunability are exchanged via MAC layer frames. | 04-18-2013 |
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 |
20130287399 | Upgraded Bandwidth Map for Ten Gigabit Passive Optical Network - An apparatus comprising an optical line terminal (OLT) configured to transmit a bandwidth map (BWmap) for a plurality of burst signals to be transmitted by a plurality of optical network units (ONUs), wherein the BWmap comprises a plurality of allocations, and wherein each allocation comprises a start time for the allocation, a grant size for the allocation, and a header error correction (HEC) for the allocation. | 10-31-2013 |
20130294776 | Passive Optical Networks with Mode Coupling Receivers - Disclosed herein is an apparatus comprising a plurality of separators configured to forward a plurality of optical signals from a plurality of optical network terminals (ONTs) along a plurality of single mode waveguides, a mode coupler coupled to the single mode waveguides and configured to receive the optical signals from the plurality of separators and combine the optical signals into a multi-mode waveguide, and an optical receiver coupled to the mode coupler via the multi-mode waveguide and configured to detect the optical signals. Also disclosed is a method comprising receiving a plurality of single mode optical channels, coupling the single mode optical channels into a multimode channel, and detecting the optical modes corresponding to the channels in the multimode channel. | 11-07-2013 |
20130311856 | Applying Forward Error Correction in 66B Systems - A method and apparatus for applying Forward Error Correction (FEC) in 66b systems. For a user data, the apparatus uses a method comprising the steps of generating one or more data blocks using a 66b code format and the user data; generating one or more FEC parity blocks using the 66b code format, wherein the parity is calculated over the data blocks; and generating an FEC codeword using the data blocks and the FEC parity blocks. | 11-21-2013 |
20140126910 | System and Method for Passive Optical Network Communication - In one embodiment, a method for passive optical network (PON) communication includes broadcasting, by an optical line terminal (OLT), a first message including a first start time of a first quiet window and a first allocation identification number (Alloc-ID), where the first Alloc-ID indicates a first supported upstream line rate associated with the first quiet window. The method also includes receiving, by the OLT from a first optical network unit (ONU) during the first quiet window, a first serial number response, wherein a first transmitting upstream line rate of the first ONU is equal to the first supported upstream line rate. | 05-08-2014 |
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 |
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 |
20140241713 | 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. | 08-28-2014 |
20140314414 | Flexible TWDM PON with Load Balancing and Power Saving - An apparatus comprising an arrayed waveguide grating (AWG) comprising a plurality of AWG ports, a power splitter comprising a plurality of splitter ports, and a plurality of optical interleavers, each coupled to a respective AWG port and a respective splitter port, for directing incoming optical signals to one of the AWG and the power splitter. | 10-23-2014 |
20140341561 | Cooperative Multi-Point (CoMP) in a Passive Optical Network (PON) - A method for error detection within a passive optical network (PON), the method comprising receiving a first upstream optical signal that is copied at an optical splitter, converting the first upstream optical signal to a first electrical signal, receiving a second electrical signal that is converted from a second upstream optical signal that is copied at the optical splitter, and determining a corrected transmitted data stream using at least the first electrical signal and the second electrical signal, wherein the first upstream optical signal and the second upstream optical signal are copies of an upstream optical signal generated from a plurality of optical network units (ONUs). | 11-20-2014 |
20140341579 | Statistical Optical Design Enabled Via TWDM-PON - An optical line terminal (OLT) in a time and wavelength division multiplexed (TWDM) passive optical network (PON). The OLT comprises a first optical port, a second optical port, and a processor. The first optical port is configured to couple to a plurality of optical network units (ONUs) via an optical distribution network (ODN). The second optical port is configured to couple to the ONUs via the ODN. The processor is coupled to the first optical port and the second optical port and is configured such that, responsive to receiving information indicating that the first optical port has experienced a greater power loss over time than the second optical port, the OLT assigns to the first optical port a first wavelength with a power greater than the power of a second wavelength assigned to the second optical port. | 11-20-2014 |