09th week of 2011 patent applcation highlights part 41 |
Patent application number | Title | Published |
20110051672 | RESOURCE ALLOCATION METHOD AND A METHOD FOR TRANSMITTING/RECEIVING RESOURCE ALLOCATION INFORMATION IN MOBILE COMMUNICATION SYSTEM - A resource allocation method and a method for transmitting resource allocation information in a mobile communication system are disclosed. That is, a LVRB (PRB) and a DVRB which are the units of a scheduling resource are defined and a resource allocation method and a method for transmitting resource allocation information using the same are disclosed. In the LVRB, a part bitmap scheduling method using a LVRB set is suggested and a method for constructing resource allocation information using the same is suggested. In the DVRB, a method for defining the DVRB using PRBs in a subframe is suggested and a method for constructing resource allocation information using the same when scheduling is performed using the DVRB constructed by the defined method is suggested. In order to prevent interference and collision from occurring due to the complete matching of the DVRBs in respective cells, a method using different DVRBs in the respective cells is suggested. | 2011-03-03 |
20110051673 | SELECTIVELY ASSIGNING MOBILE STATIONS TO SEGMENTED ZONES - A base station includes a transceiver, memory, and processor. The transceiver communicates with mobile stations. The memory stores a database of threshold CINR values. The processor implements a scheduling module. The transceiver receives a request to connect from a mobile station. The scheduling module obtains actual CINR and RSSI values for the mobile station. The scheduling module compares the actual CINR value with a threshold CINR value retrieved from the database based on the actual RSSI value. When the actual CINR value is greater than the threshold CINR value for the actual RSSI value, the scheduling module assigns the mobile station one or more subcarriers from a fully used zone of subcarriers. When the actual CINR value is not greater than the threshold CINR value for the actual RSSI value, the scheduling module assigns the mobile station one or more subcarriers from a segmented zone of subcarriers. | 2011-03-03 |
20110051674 | MEDIA ACCESS CONTROL PROTOCOL FOR MULTIUSER DETECTION ENABLED AD-HOC WIRELESS COMMUNICATIONS - A method is disclosed for increasing the communication capacity of a shared ad-hoc wireless channel by using multiuser detection (MUD) to distinguish overlapping information transmitted simultaneously by a plurality of nodes. The transmitting nodes simultaneously provide parameter-estimating signals over separate, unshared, low-rate parameter channels generated using orthogonal frequencies, spread spectrum technology, or time multiplexing. Receiving nodes use these separate, non-overlapping parameter-estimating signals to estimate MUD-required signal parameters such as amplitude, phase, and frequency offset, thereby enabling use of lower complexity MUD receivers, because the parameters are not estimated in the presence of other interference. Node ID, spreading code type, and/or other information can also be transmitted over the parameter channels. Limiting the number of parameter channels can limit the maximum number of transmitting nodes. Amplitudes of parameter channel transmissions can be greater than communication channel transmissions by a known ratio. Parameter channels can be frequency-hopped for jam-resistance. | 2011-03-03 |
20110051675 | COMMUNICATION METHOD, BASE STATION APPARATUS, AND TERMINAL APPARATUS USING THE COMMUNICATION METHOD - An assigning unit defines multiple subchannels that are frequency-division multiplexed and assigns, to at least one terminal apparatus, two or more subchannels for each of the downlink and uplink symmetrically. The assigning unit includes discontinuous subchannels in the subchannels assigned for each of the downlink and uplink. A modulator and a transmitter transmit a multicarrier signal to a terminal apparatus. A receiver and a demodulator receive a single carrier signal from a terminal apparatus. The receiver and demodulator use one or more continuous subchannels among two or more subchannels in the uplink by switching those two or more subchannels. | 2011-03-03 |
20110051676 | APPARATUS AND METHOD FOR RESOURCE SELECTION IN OFDMA SYSTEMS - A base station for use in a wireless network that communicates with mobile stations according to the IEEE 802.16 | 2011-03-03 |
20110051677 | CHANNEL ASSIGNMENT FOR WIRELESS ACCESS NETWORKS - Channel assignment for wireless access networks is directed toward improved overall communication capability of the networks. A network is formed of wireless access points (APs) coupled via wired (and/or wireless) links and enabled to communicate with clients via radio channels of each of the APs. Local information is collected at each of the APs and processed to determine channel assignments according to a Neighbor Impact Metric (NIM) that accounts for one-hop and two-hop neighbors as well as neighbors not part of the network. Optionally, the NIM accounts for traffic load on the APs. The channel assignments are determined either on a centralized resource (such as a server or one of the APs) or via a distributed scheme across the APs. The local information includes how busy a channel is and local operating conditions such as error rate and interference levels. | 2011-03-03 |
20110051678 | Channel Status Determination Method and Related Wireless Local Area Network System and Direct Link Setup Method - A method for determining a channel status between a first station and a second station in a wireless local area network system includes the first station receiving a beacon from an access point, and the first station broadcasting a packet carrying the beacon, to provide a basis for the second station to determine the channel status between the first station and the second station. | 2011-03-03 |
20110051679 | System and Method for Dynamic Allocation of Spectrum - A communication system is provided for transmitting video, audio, and data content between two or more nodes of a communications network comprised party of twisted pair links. Also provided, is a telecommunication system for transmitting spectrum, comprising transmission bandwidths that carry signals such as, video, audio, data and other services, over twisted pairs of telephone wires. Such system being adapted for dynamic assignment and management of frequency bands of spectrum over twisted pair links. | 2011-03-03 |
20110051680 | METHOD OF TRANSMITTING UPLINK CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method and device for transmitting uplink control signals in a wireless communication system, the method including: reserving a preassigned scheduling request (SR) physical uplink control channel (PUCCH) resource used for transmission of a SR; determining a frequency domain sequence and an orthogonal sequence based on the preassigned SR PUCCH resource; spreading an ACK/NACK for Hybrid Automatic Repeat Request (HARQ) with the frequency domain sequence and the orthogonal sequence to generate a mapped sequence; and transmitting the mapped sequence | 2011-03-03 |
20110051681 | METHOD OF SIGNALING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM WITH MULTIPLE FREQUENCY BLOCKS - A method for performing communication in a user equipment of a wireless communication system comprises receiving a control region through a specific frequency block of a plurality of frequency blocks, the control region including a plurality of control channels; identifying a first control channel for the user equipment in the control region; and performing an operation in accordance with information included in the first control channel, wherein the specific frequency block through which the first control channel is transmitted is changed according to a certain pattern with the lapse of time. | 2011-03-03 |
20110051682 | Assignment and Handover in a Radio Communication Network - A network entity for a radio communication network includes a processing unit which causes a first resource and a second resource for a terrestrial interface of the radio network to be seized, where the first resource is distinct and different from the second resource. The entity includes a network interface through which a handover request or an assignment request message identifying the first and the second resource is sent. A network entity for a radio communication network includes a network interface which receives a handover request message or an assignment request message identifying a first resource and a second resource. The first resource is distinct and different from the second resource. The entity includes a processing unit that selects one of the first and second resources, allocates a radio channel associated with the handover or assignment, selects a bearer for a terrestrial interface and seizes resources for the interface. | 2011-03-03 |
20110051683 | INTER-TECHNOLOGY HANDOVERS FOR WIRELESS NETWORKS - Systems and methods for improved inter-technology handovers between wireless networks are disclosed, in which a source radio access network operates on a first technology and a target radio access network operates on a second technology, and both radio access networks are managed at a single packet serving gateway. A foreign agent receives a mobile subscriber identifier during a handover of a mobile device from the source radio access network to the target radio access network and sends the mobile subscriber identifier to the packet serving gateway, and the packet serving gateway locates at least one process instance running on the packet serving gateway that is routing existing packet flows to the mobile device based on the mobile subscriber identifier. The packet serving gateway then transfers control of the at least one process to a control process. | 2011-03-03 |
20110051684 | METHODS AND APPARATUS TO SUPPORT COORDINATED INTERFERENCE MITIGATION IN MULTI-TIER NETWORKS - For use in a wireless network, a femtocell base station in communication with at least one first mobile station is provided. The femtocell base station is configured adjust a resource of the femtocell base station to mitigate interference at a second mobile station. In certain embodiments, the femtocell base station is configured to coordinate a handover of the at least one first mobile station from the femtocell base station to a neighboring base station. In certain embodiments, the femtocell base station is configured to transmit a message regarding the resource adjustment to the at least one first mobile station. | 2011-03-03 |
20110051685 | RADIO COMMUNICATION SYSTEM - A radio communication system includes: a first base station for communicating with a mobile station in a first area; and a second base station for communicating with the mobile station in a second area; the first base station including: a first receiving unit for receiving connection control information from the second station; a first setup unit for generating scheduling information; and a first transmitting unit for transmitting the generated scheduling information to the second base station and for transmitting the data decided to send to the mobile station on the basis of the scheduling information; the second base station including: a second transmitting unit for transmitting the connection control information and for transmitting the data decided to send to the mobile station on the basis of the scheduling information; and a second receiving unit for receiving the scheduling information from the first base station. | 2011-03-03 |
20110051686 | METHOD AND APPARATUS OF PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM - A method of performing a handover procedure of a handover performing apparatus in a wireless communication system in which a macro base station and a femto base station coexist is provided. The method of performing the handover procedure of the handover performing apparatus includes detecting an uplink signal transmitted from a terminal to the macro base station, sending a report message including information about the uplink signal to the macro base station, and performing the handover procedure with the terminal when the macro base station triggers handover based on the report message. | 2011-03-03 |
20110051687 | COMMUNICATION METHOD AND TERMINAL APPARATUS USING THE SAME - A radio unit and other units communicate with a base station apparatus. The radio unit and other units are capable of performing multiple types of communications. An acquisition unit acquires communication quality and moving speed. A determination unit determines the execution of a handover based on acquired quality and moving speed. The determination unit specifies, from among acquired quality and moving speed, a parameter used to determine the execution of a handover, based on the type of performed communication. An instruction unit instructs the radio unit and other units to perform a handover. | 2011-03-03 |
20110051688 | METHOD AND APPARATUS FOR ALLOCATING RANGING CHANNEL FOR SYNCHRONIZED MOBILE STATION IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for allocating a ranging channel for a synchronized mobile station in a wireless communication system is provided. A base station (BS) allocates the ranging channel for the synchronized mobile station in a first subframe and a first subband. An index of the first subframe and an index of the first subband are determined respectively based on an index of a second subframe and an index of a second subband in which a ranging channel of a non-synchronized mobile station is allocated. | 2011-03-03 |
20110051689 | Method for Reserving the Network Address During a Vertical Handover - A method for allocating the same network address to a first network interface and to a second network interface of a host is described. The method includes connecting the host to a first network (RANI) via the first network interface and connecting the host to a second network (RAN | 2011-03-03 |
20110051690 | RADIO COMMUNICATION SYSTEM, BASE STATION, TERMINAL, RADIO COMMUNICATION METHOD, AND PROGRAM - A radio communication system includes a terminal and a base station that reports power information in the base station to the terminal. The terminal includes a prediction unit that, at the time of handover, predicts the timing at which power information is to be reported next based on the report period for reporting power information by the base station, and a switching unit that, at the time of handover, carries out switching to a handover target base station before the timing that was predicted. | 2011-03-03 |
20110051691 | CIRCUIT SWITCHED DOMAIN CODEC LIST FOR SINGLE RADIO VOICE CALL CONTINUITY - A Circuit Switched (CS) domain codec list for Single Radio Voice Call Continuity (SR-VCC) is provided An apparatus providing such a list can include prepaπing a list of circuit switched capabilities of a terminal device, sending the list to a network device dunng attachment, receiving the list at the network device, stoπing the list in the network device, sending the list to a second network device, receiving the list at the second network device, and using the list in handing over the terminal device to the second network device. | 2011-03-03 |
20110051692 | SYSTEMS AND METHODS FOR SUPPORTING AN ENHANCED SERVING CELL CHANGE WHEN MOVING AMONG DIFFERENT CELL TYPES - A system and method enable handover from a DC-HSUPA-capable node in a cellular wireless network to a non-DC-HSUPA-capable node. According to various aspects of the present disclosure, a handover may implement a legacy serving cell change procedure or an enhanced serving cell change procedure. In either case, signaling from the network to user equipment includes information to enable the user equipment to change or remove an Active Set when undergoing a handover from a cell with two uplink carriers and accordingly two Active Sets, to a cell with one uplink carrier and accordingly one Active Set. | 2011-03-03 |
20110051693 | METHOD AND APPARATUS FOR ROAMING SEAMLESSLY - In accordance with the invention, a method for roaming seamlessly comprises the steps of: associating with a first access point; selecting a second access point if a first received signal strength indication (RSSI) value is less than a first threshold value; performing an authentication procedure and a handshaking procedure with the second access point; and associating with the second access point if a second RSSI value is less than a second threshold value. | 2011-03-03 |
20110051694 | METHOD OF TRANSMITTING AND RECEIVING UPLINK DATA USING TRANSMISSION OF PROFILE INDEXES - A method of transmitting and receiving uplink data using transmission of profile indexes is disclosed. The method of includes transmitting, at a mobile station, any one of codewords mapped to a plurality of bandwidth request profiles according to a service characteristic to a base station through a fast feedback channel, and upon receiving an uplink grant message for an up-link resource allocated in correspondence to the codeword from the base station, transmitting data though the uplink resource. As a result, collision does not occur during a resource request, quality of service (QoS) of a real-time traffic sensitive to delay can be satisfied, an uplink allocation request procedure is simplified thus reducing message overhead, and a resource can be efficiently used according to a characteristic of a service provided to the mobile station. | 2011-03-03 |
20110051695 | Methods and Devices for Scheduling Transmissions in a Wireless Network Based on Traffic Priority and Channel Conditions - Methods and systems for assigning time-division multiplexed (TDM) slots in a multi-channel TDM system are presented. Preferably, a radio access network (RAN) assigns forward link and reverse link transmissions between the RAN and one or more wireless communication devices (WCDs) to TDM slots on various wireless channels. When making these assignments, the RAN may take into account (i) the priority of data that the RAN queues for the WCDs, and (ii) the signal quality at which the WCDs can receive the various wireless channels. | 2011-03-03 |
20110051696 | METHOD OF RADIO COMMUNICATION, MOBILE TERMINAL, AND RADIO NETWORK CONTROL APPARATUS - A method of radio communication in a radio communication system including a plurality of mobile terminals and a base transceiver station. The method includes establishing radio communication between a first mobile terminal and the base transceiver station by using a first physical channel and a first dedicated channel, wherein a slot of the first physical channel is shared by time-division multiplexing by first and second control information, the first control information being for the first dedicated channel of the first mobile terminal, the second control information being for a second dedicated channel of a second mobile terminal, and switching the first physical channel to a second physical channel on the basis of a first communication quality of the established radio communication, wherein a slot of the second physical channel is dedicated to the first control information. | 2011-03-03 |
20110051697 | Apparatus, System, and Method for Access Procedure Enhancements - A mobile communication device for access procedure enhancement is provided. In the mobile communication device, a wireless module performs wireless transmissions and receptions to and from a service network. Also, a controller module transmits an access probe to the service network via the wireless module, and retransmits the access probe in response to not receiving an acknowledgement of the access probe from the service network via the wireless module in a waiting period of time. The waiting period of time is determined according to a coherence-time related offset. The controller module further repeats the retransmission of the access probe until the acknowledgement of the access probe is received from the service network via the wireless module | 2011-03-03 |
20110051698 | Mobile Remote Access - Providing mobile remote access in a secure manner. A bridge application is provided for devices such as smart phones which establishes a first secure connection to a host controller using a carrier network, advertises one or more SSIDs using a second wireless connection on the device such as an IEEE 802.11 interface, accepting and authenticating connections from a target device to the advertised SSID, and acting as a bridge for traffic between the target device and the host controller. The bridge application may be delivered to the device fully configured, or it may be delivered unconfigured with configuration information either supplied by the user or provided in an e-mail to the user of the device. | 2011-03-03 |
20110051699 | Traffic Forwarding in Mesh Networks - Prioritizing traffic forwarding in a wireless mesh network. In a wireless mesh network using carrier detect multiple access-collision avoidance with backoff, such as mesh networks supporting IEEE 802.11 clients, access points in the mesh are assigned levels according to their distance in hops from the root node of the mesh. Access points in the mesh then generate backoff times proportional to their level in the mesh. This has the effect of prioritizing traffic at those levels close to the mesh root. | 2011-03-03 |
20110051700 | MODIFYING SYSTEM CLOCKS BASED ON PARTICULAR WLAN CHANNEL THAT IS SELECTED TO IMPROVE RF SENSITIVITY OF A RADIO MODULE - Techniques are provided for selecting one of a plurality of clock signals used to drive a bus of a WLAN-enabled device having a WLAN radio module coupled to the bus and designed to operate over a plurality of WLAN channels. A network infrastructure device, such as an access point or port, is provided that comprises a WLAN radio module, a PCI bus coupled to the WLAN radio module, a look up table (LUT) and a processor. The WLAN radio module designed to operate over a plurality of WLAN channels in a first frequency band. The LUT comprises a plurality of entries. Each entry comprises: a particular one of the WLAN channels and a corresponding one of a first clock signal having a first clock frequency and a second clock signal having a second clock frequency that is to be selected. The first clock signal causes interference at the WLAN radio module when operating over a first subset of the WLAN channels, and the second clock signal causes interference at the WLAN radio module when operating over a second subset of the WLAN channels. The processor selects, from the LUT based on the one of the WLAN channels that has been selected for the WLAN radio module to communicate over, either the first clock signal or the second clock signal that is to be used to drive the bus. | 2011-03-03 |
20110051701 | IMS DEREGISTRATION OF A DUAL MODE DEVICE TRIGGERED THROUGH A LEGACY NETWORK - Systems and methods are disclosed that deregister a dual mode device with an IMS network by transmitting a message over a legacy network (e.g., a cellular network). The dual mode device detects a loss of wireless communications with an access network of the IMS network, and transmits a deregister request message to the legacy network for delivery to the IMS network. A network element in the IMS network receives the deregister request message, and updates an IMS registration status of the dual mode device based on the deregister request message to indicate the dual mode device as deregistered. | 2011-03-03 |
20110051702 | ADDRESS STRIPPING IN A METER READING WIRELESS MESH NETWORK AND ASSOCIATED SYSTEM - A meter reading system includes a meter reading wireless mesh network having wireless meter reading nodes in communication with an access point. Each wireless meter reading node has an address associated therewith. The meter reading wireless mesh network is configured to define a given downstream route, from the access point to a given node via successive intermediate nodes, based upon addresses of the successive intermediate nodes and the given node. The respective address at each successive intermediate node is stripped while routing data along the given downstream route from the access point to the given node. | 2011-03-03 |
20110051703 | Mobile router device - A wireless mobile router ( | 2011-03-03 |
20110051704 | METHOD AND A DEVICE FOR RELAYING SYMBOLS TRANSFERRED BY A SOURCE TO A DESTINATION - The present invention concerns a method for relaying symbols transferred by a source to a destination in a wireless cellular telecommunication network, the symbols being relayed by a relay, the relay receiving symbols. The relay:
| 2011-03-03 |
20110051705 | MIMO AND MU-MIMO OFDM PREAMBLES - Certain aspects of the present disclosure present frame structures to support a plurality of standards, such as the IEEE 802.11 ac in addition to the IEEE 802.11 a/b/n/g. Preamble of the frame structure can be used by a receiver to detect transmission mode of the packet. | 2011-03-03 |
20110051706 | WIRELESS NETWORK SYSTEM - A integrated circuit includes logic configured to support smart-utility-network communication using an integer number of data bits per symbol for 96, 48, 24, 12, and 4 data subcarriers across IFFT sizes of 128, 64, 32, 16, and 8. | 2011-03-03 |
20110051707 | CALL FLOW SYSTEM AND METHOD FOR USE IN A LEGACY TELECOMMUNICATION SYSTEM - A method of operating a network server, such as a mobile application gateway, connect devices on a cellular or carrier network with individual networks, such as enterprise voice and data networks or residential networks. The effects of the present invention are far reaching in terms of transferring effective call control from the cellular network into the control of the individual network, such as the enterprise, and enabling new business models for the purchase of cellular service from a public cellular carrier by an enterprise. | 2011-03-03 |
20110051708 | METHOD AND DEVICE FOR DEPLOYING EVOLVED NODE B - A method and device for deploying evolved nodes are provided in the present invention, and the method comprises: a MME acquires a connection establishment request from an e Node B, wherein the connection establishment request carries a global identifier of the e Node B; the MME acquires the global identifier, and searches for corresponding e Node B information according to the global identifier, and if the corresponding e Node B information cannot be found, the MME deploys the e Node B. With the present invention, the MME in a mobile communication packet domain evolved system can directly deploy e Node B, which increases the number of e Node B in the mobile communication packet domain evolved system, and satisfies the demand of the mobile communication packet domain evolved system on e Node B. | 2011-03-03 |
20110051709 | SELECTIVELY MANAGING MOBILE STATION SUBSCRIPTIONS BETWEEN FULLY USED ZONES AND SEGMENTED ZONES - A base station receives a connection request from a mobile station. A scheduling module determines whether the fully used and/or segmented zones of the base station are oversubscribed. If the fully used zone is oversubscribed while the segmented zone is not, the mobile station having the largest CINR difference between the zones is assigned to the segmented zone. If the segmented zone is oversubscribed while the fully used zone is not, the mobile station having the smallest CINR difference between the zones is assigned to the fully used zone. If neither zone is oversubscribed and the segmented zone allows modulation/coding more spectrally efficient than the fully used zone, the requesting mobile station is assigned to the segmented zone. If neither zone is oversubscribed and the segmented zone does not allow modulation/coding more spectrally efficient than the fully used zone, the requesting mobile station is assigned to the fully used zone. | 2011-03-03 |
20110051710 | LEARNING WIRELESS MEDIUM ACCESS CONTROL FOR DISCRETE EVENT CONTROL SYSTEMS - A wireless data transmission method includes providing a plurality of radio frequency transmitters. A receiver is provided to receive transmissions from the transmitters. A data format including a plurality of transmission time slots is defined. A first subset of the plurality of transmitters that are apt to send the transmissions simultaneously is determined. Each of the transmitters in the first subset is assigned to a different one of the time slots. A second subset of the plurality of transmitters that are apt to send the transmissions non-simultaneously is determined. Each of the transmitters in the second subset is assigned to a same one of the time slots. The transmitters are used to transmit the transmissions to the receiver in accordance with the assigning steps. | 2011-03-03 |
20110051711 | MOBILE STATION, BASE STATION, BASIC FREQUENCY BLOCK SPECIFYING METHOD AND BAND CONTROL METHOD - A base station includes a receiving unit configured to receive a UE capability regarding a bandwidth from a mobile station; and a specifying unit configured to specify, among plural basic frequency blocks included in a system band, one or more basic frequency blocks to be used by the mobile station based on the UE capability. | 2011-03-03 |
20110051712 | INTERNET PROTOCOL MULTIMEDIA SYSTEM (IMS) MOBILE SESSION INITIATION PROTOCOL (SIP) AGENT - A first phone obtains an identifier of a second phone from a phone list, and sends a request for the second phone's Session Initiation Protocol (SIP) type to a remote server. The first phone receives the second phone's SIP type from the remote server, and sends a message to one or more nodes in a network, based on the received second phone's SIP type, for a SIP session between the first phone and the second phone. | 2011-03-03 |
20110051713 | FACSIMILE PRIORITIZATION WITHIN INTERNET PROTOCOL CALL NETWORKS - A method and apparatus maintain a facsimile number priority hierarchy within a computer storage medium and process a first facsimile call being transmitted through a computerized call processor. The first facsimile call is made between a first telephone number associated with the computerized call processor and a second telephone number not associated with the computerized call processor. While processing the first facsimile call, the computerized call processor receives an indication of an attempt to connect a second facsimile call between the first telephone number and a third telephone number. The third telephone number is not associated with the computerized call processor. The method and apparatus determine a priority between the second telephone number and the third telephone number based on the facsimile number priority hierarchy. If the second telephone number has a higher priority than the third telephone number, the computerized call processor does not connect the second facsimile call. However, if the third telephone number has a higher priority than the second telephone number, the computerized call processor terminates the first facsimile call and connects the second facsimile call by connecting the third telephone number to the first telephone number. | 2011-03-03 |
20110051714 | Apparatuses, Methods and Systems For Tiered Routing Engine - The APPARATUSES, METHODS AND SYSTEMS FOR TIERED ROUTING ENGINE (“TRE”) provides an automatic routing, selecting, processing for calls placed in an international network according to a selected International Tier Level for premium or guaranteed delivery. In one embodiment, a platform initiates international tiered routing information to a gateway based on a pre-set platforms' knowledge of the terminating gateway topology, Automatic Number Identification, and assigned services that requires such transmission. In one embodiment, a user may select a tier to route an international call. In another embodiment, the contextual fields of a communication mechanism define tags and tier levels indicating determining, routing and handling information to be sent to a validated gateway, or routing devices. In one embodiment, contextual tags includes customized domain name and global descriptors of compatible network components, delivery control, trunk group service ID, trunk-related tier level, and other trunk-related service attributes for tiered routing. | 2011-03-03 |
20110051715 | METHOD AND SYSTEM FOR PLATFORM-INDEPENDENT VOIP DIAL PLAN DESIGN, VALIDATION, AND DEPLOYMENT - A system and method for designing a dial plan for Voice over Internet Protocol (VoIP) systems includes generating an abstract dial plan design which is platform independent, the dial plan including rules for routing communications in a VoIP network structure. The dial plan is validated through simulations prior to deployment to evaluate the dial plan performance under simulated conditions. The dial plan design is translated to provide compatibility with a deployed network using platform specific configuration adaptors. | 2011-03-03 |
20110051716 | TV ACTING AS POTS PHONE SWITCH - A TV receives IP calls and POTS calls. When a POTS call is received the TV passively passes the call to a non-IP phone, and when an IP call is received the TV processes the IP packets as appropriate for the non-IP phone and passes the call to the phone. The non-IP phone can also signal using a special code a desired to place an IP call, with the signals from the phone being rendered into IP packets by the TV. In this way, a non-IP phone may be used to place and receive both POTS calls and IP-based calls. | 2011-03-03 |
20110051717 | SYSTEM AND METHOD FOR PROVIDING REDUNDANCY IN A DISTRIBUTED TELECOMMUNICATIONS ARCHITECTURE - A telecommunications platform that provides redundant interfaces to a telecommunications system for multiple IP based telecommunication devices. The telecommunications platform includes a gateway cluster with two or more signaling gateways. Each signaling gateway is assigned a point code for being accessed by devices in the telecommunications system. The gateway cluster is assigned a virtual point code. Any of the IP based telecommunications devices can be accessed by the telecommunications system by routing to the virtual point code through one of the signaling gateways in the gateway cluster. Thus, if one of the signaling gateways is not available, the IP based telecommunications devices can still be accessed through one of the other signaling gateways in the gateway cluster. | 2011-03-03 |
20110051718 | METHODS AND APPARATUS FOR DELIVERING AUDIO CONTENT TO A CALLER PLACED ON HOLD - Several methods and systems for providing audio content to callers placed on hold are described. In some on-hold phonecasting methods, a two-way telecommunications link is established between a caller and a call terminus. The caller or the call terminus is temporarily isolated from the link. The audio content is provided via the link while the caller or call terminus is isolated to indicate that the link is still in place. At least a portion of the audio content is specified by a really simple syndication feed. The audio content may include one or more podcasts publicly available via the Internet. The audio content may be generated according to configuration information and by concatenating an audio advertisement or public service essage with the portion of the audio content. The method may also include periodically checking the RSS feed for updates to the audio content, and downloading updated audio content. | 2011-03-03 |
20110051719 | PROVIDING A CALL SERVICE IN A COMMUNICATION NETWORK - Methods and systems for providing company call service in wireless and wired integrated network are provided. For example, a call between an employee's wireless device and a client's device can be connected while indicating the employee's wired telephone number as a caller's telephone number. When an employee is receiving a call, one example is to call an employee's wired device first, and if there is no response, employee's wireless device may be called subsequently. In another example, employee's wired and wireless device may be called simultaneously. | 2011-03-03 |
20110051720 | SIP TELEPHONE SET, AND FILE TRANSFER SYSTEM, FILE TRANSFER METHOD AND FILE TRANSFER PROGRAM THEREOF - Provided is service for transmitting and receiving a file between a calling device and a call receiving device without depending on a capacity of a proxy server. | 2011-03-03 |
20110051721 | REDUNDANCY AND WIRELESS SWITCHOVER IN POWERLINE COMMUNICATION SYSTEMS - The present invention discloses a system and method to use powerline and wireless communications for delivery of data and voice messages over IP (Internet Protocol). In order to achieve high reliability in communication service over powerline, wireless network is used as a redundant network to switch over in case of failover. The invention provides an integrated algorithm that provides seamless switching between powerline and wireless communication methods in real time. | 2011-03-03 |
20110051722 | METHOD, USER EQUIPMENT AND SERVER FOR MULTIMEDIA SESSION TRANSFER - The present invention discloses a method, User Equipment (UE), and server for multimedia session transfer, and relates to a mobile communication technology, and in particular, to a technology for transferring multimedia sessions from a Circuit Switched (CS) network to a Packet Switched (PS) network. The method includes: receiving a session transfer request sent by a UE, where the session transfer request carries a static Session Transfer Identifier (STI); executing a procedure for transferring the active CS session according to the CS session transfer request, and judging whether the UE has a held CS session; and if so, sending the dynamic STI corresponding to the held CS session to the UE so that the UE can send a CS session transfer request again according to the dynamic STI, and receiving the request for transferring the held CS session and executing a procedure for transferring the held CS session. Further, a UE and a server are provided. With the present invention, two multimedia sessions in a CS network of the UE incapable of IMS Centralized Service (ICS) can be transferred to the PS network. | 2011-03-03 |
20110051723 | ETHERNET DIFFERENTIATED SERVICES ARCHITECTURE - An edge node of a communication network and method to classify incoming Ethernet traffic based on predetermined criteria. An ingress switch is configured to receive an incoming Ethernet frame. A frame classifier is configured to identify flows and to correlate a flow to a corresponding bandwidth profile and corresponding forwarding treatments defined for the flow. | 2011-03-03 |
20110051724 | FLEXIBLE ROUTING TABLES FOR A HIGH-RADIX ROUTER - A system and method for routing in a high-radix network. A packet is received and examined to determine if the packet can be routed adaptively. If the packet can be routed adaptively, the packet is routed adaptively, wherein routing adaptively includes selecting a column, computing a column mask, routing the packet to the column; and selecting an output port as a function of the column mask. If the packet can be routed deterministically, routing deterministically, wherein routing deterministically includes accessing a routing table to obtain an output port and routing the packet to the output port from the routing table. | 2011-03-03 |
20110051725 | ROUTE-OPTIMISED MULITCAST TRAFFIC FOR A MOBILE NETWORK NODE - A method of communicating traffic from a source to a group (G) of nodes including a Network Node (MNN) in a network using one or more multicast protocols. The network also comprises a Router (MR) for forwarding traffic between the network and the Internet and a Multicast Signalling Gateway (MSG) co-located with the Router (MR) and translating on an interface signalling messages of a multicast routing protocol (MRP) into messages of a group membership protocol (GMP). In the case of mobile networks, the interface is preferably an egress interface of the Mobile Router (MR). The Multicast Signalling Gateway (MSG) preferably translates multicast packets together with unicast source addresses and multicast destination addresses of multicast packets between IPv4 and IPv6 protocols. | 2011-03-03 |
20110051726 | METHOD AND APPARATUS FOR FAULT-RESILIENT MULTICAST USING MULTIPLE SOURCES - A capability is provided for supporting fault-resilient multicast using multiple sources. A method for supporting fault-resilient propagation of multicast traffic using Redundant Multicast Trees (RMTs) includes identifying each potential Shared Risk Link Group (SRLG) conflict associated with a pair of RMTs providing node-disjoint paths to a plurality of destination nodes, identifying each potential SRLG conflict that is an actual SRLG conflict, and, for each actual SRLG conflict, determining a detour path for protecting the links of the actual SRLG conflict. The pair of RMTs includes a first RMT from a first multicast source node to each of the destination nodes and a second RMT from a second multicast source node to each of the destination nodes. Each potential SRLG conflict includes a plurality of links. A potential SRLG conflict is determined to be an actual SRLG conflict if first and second paths for one of the destination nodes over the respective first and second RMTs each traverse at least one link of the potential SRLG conflict. | 2011-03-03 |
20110051727 | Network based multicast stream duplication and merging - In one embodiment, a method includes receiving a join message from a receiver at a receiver edge router, the join message identifying a source and a group, and creating at least two forwarding trees for transmitting multicast data streams comprising duplicate data to the receiver edge router. The forwarding trees include a root at a source edge router in communication with the source, and different network paths. The method further includes receiving a packet from one of the forwarding trees and processing the received packet to determine if the packet is a duplicate of another packet received at the receiver edge router. If the packet is a duplicate packet, it is discarded. If the packet is not a duplicate, it is forwarded to the receiver. An apparatus is also disclosed. | 2011-03-03 |
20110051728 | Method for Optimizing a Route Cache - A system and method for managing a route cache to reduce the risk of disruption from denial of service attacks. All traffic arriving on a front interface from local (on-link) nodes (e.g., neighbor nodes) can be treated normally. However, for packets arriving from remote (off-link) sources addressed to a given destination IP address, a single, shared route cache entry can be used. The source-address field in this entry can be zeroed-out since it will not be used for traffic coming from any one source. Similarly, for all packets going to off-link destinations through the front-interface, another single shared route cache entry can be created and used. The destination-address field in this entry can be zeroed out since it will not be used for traffic going to any one destination. | 2011-03-03 |
20110051729 | METHODS AND APPARATUSES RELATING TO PSEUDO RANDOM NETWORK CODING DESIGN - A method of providing a pseudo random network coding design may include receiving, at a receiver node, signaling including an index of a codebook communicated from a transmitter node employing network coding, utilizing the codebook associated with the index to generate a coding coefficient used to employ the network coding, and decoding the signaling using the coding coefficient. A corresponding apparatus is also provided. | 2011-03-03 |
20110051730 | MULTI-LAYER DATA PROCESSING APPARATUS AND METHOD THEREOF - A multi-layer data processing apparatus and method. The multi-layer data processing unit may classify received multi-layer data into lower layer data and higher layer data using lower layer information, and generate and output a traffic flow of the lower layer data or traffic flows of the lower layer data and the higher layer data with reference to a rule information table. In the rule information table, pieces of lower layer rule information may be linked to pieces of higher layer rule information. | 2011-03-03 |
20110051731 | METHODS AND APPARATUS TO REASSIGN QUALITY OF SERVICE PRIORITIES IN A COMMUNICATION NETWORK - Methods and apparatus to reassign quality of service (QoS) priorities in a communication network are disclosed. An example method disclosed herein comprises performing a temporary QoS priority reassignment for network traffic between a first network element associated with a first user of a communication network and a second network element associated with a second user of the communication network without intervention by a service provider providing the communication network to the first and second users, the first user authorized by the service provider to temporarily reassign a QoS priority associated with the second user, and terminating the temporary QoS priority reassignment based on a monitored termination criteria. | 2011-03-03 |
20110051732 | Switching hub and ring network - A switching hub for processing a VLAN frame transmitted through a transmission line of a ring network includes two ring ports connected to the transmission line of the ring network, and a forwarding processing mechanism for, when one of the two ring ports receives the frame and when a VLAN in which the received frame belongs is a VLAN only through both the ring ports, forwarding the frame to the other ring port without performing FDB learning on the frame. | 2011-03-03 |
20110051733 | System and Method for Direct Communications Between FCoE Devices - Disclosed is an improved mechanism for direct communications and frame routing between FCoE devices within an Ethernet network supporting FCoE protocols. In particular, the methods and systems disclosed herein enable direct communications from one FCoE device to another without going through any intermediary such as an FCF (FCoE Forwarder) that is designed to route traffic between FCoE devices according to the current FCoE standards. This is accomplished by registering the Ethernet MAC address of an FCoE device in a name server via certain objects presently used in an FIP fabric login request, e.g., Port_Name or Node_Name, and other standard-specified objects and functionalities without requiring any changes to the existing FCoE and FC standards. | 2011-03-03 |
20110051734 | ENERGY EFFICIENT CONTROL OF DATA LINK GROUPS - Where parallel links between network devices are aggregated into link groups to support the transport of associated data streams, the link groups can be managed in an energy efficient manner by defining each link group as consisting of a primary link and one or more secondary links. The primary link in a link group remains enabled at all times but the secondary links are enabled only when needed and are disabled when no longer needed, minimizing power consumption for the secondary links (and the link group). | 2011-03-03 |
20110051735 | DYNAMIC LOAD BALANCING USING VIRTUAL LINK CREDIT ACCOUNTING - Methods and apparatus for dynamic load balancing using virtual link credit accounting are disclosed. An example method includes receiving, at a network device, a data packet to be communicated using an aggregation group, the aggregation group including a plurality of virtual links having a common destination. The example method further includes determining a hash value based on the packet and determining an assigned virtual link of the plurality of virtual links based on the hash value. The example method also includes reducing a number of available transmission credits for the aggregation group and reducing a number of available transmission credits for the assigned virtual link. The example method still further includes communicating the packet to another network device using the assigned virtual link. | 2011-03-03 |
20110051736 | COMMUNICATION RELAY SYSTEM - A communication relay system relays communications between communication terminals performing the communications according to a plurality of communication protocols. The communication relay system includes pseudonymous identification information acquiring sections associated with respective communication protocols. Each of the pseudonymous identification information acquiring sections acquires pseudonymous identification information which is information according to the associated communication protocol and is different from terminal identification information for identifying each of the communication terminals. The communication relay system includes a communication relay section which, when receiving communication information according to a communication protocol from one of the communication terminals, replaces the source terminal identification information included in the communication information with pseudonymous identification information acquired by the pseudonymous identification information acquiring section, and transmits the communication information after the replacement to another one of the communication terminals. | 2011-03-03 |
20110051737 | SYSTEM, APPARATUS, AND METHOD FOR EXTENDING NETWORK WITH POWER SUPPLY - System, apparatus, and method for extending network with power supply are disclosed. The apparatus includes a processing unit, a signal and power integration unit, a power supply unit, a transmission rate regulation unit, a display unit, and a symmetric transmission control unit. The signal and power integration unit integrates the electrical power with the data packages, so that the normal data transmission line can also transmit electrical power alone with signals to the electrical devices which are connected to the network extending apparatus. Therefore, the electrical devices do not need any extra power transmission line or independent power supply for obtaining the requisite power. | 2011-03-03 |
20110051738 | METHOD, SYSTEM AND DEVICE FOR MAINTAINING ROUTES - A method, system, and device for maintaining routes are provided. A communications network includes multiple point of presence (PoP) groups, where each of the PoP groups includes one or more PoP nodes. PoP nodes within the same PoP group issue routing information of the same super prefix. PoP nodes within different PoP groups issue routing information of different super prefixes. The method further includes the following steps. A PoP node acquires routing information of a detailed prefix covered by a super prefix issued by the PoP node and synchronizes the routing information of the detailed prefix with other PoP nodes within the same PoP group. The method, system, and device reduce flow of data forwarded by each PoP node. | 2011-03-03 |
20110051739 | Method for Using Voice Messages in Telecommunications Connections - The invention relates to a method for using voice messages in telecommunications connections. The method comprises the following steps: —routing a connection establishment or the data of a through-connected telecommunications connection from a calling end system ( | 2011-03-03 |
20110051740 | Delayed Onset of Voice Activity Detection for Jitter Adaptation - Disclosed are various systems and methods for controlling a voice activity detector. In one example approach, a method is provided in which a voice over Internet protocol (VOIP) session is initiated in a first gateway with a second gateway. A plurality of jitter adaptation packets are transmitted from the first gateway to the second gateway. Also, the voice activity detector is disabled in the first gateway during the transmission of the jitter adaptation packets. The voice activity detector is enabled in the first gateway after the transmission of the jitter adaptation packets. | 2011-03-03 |
20110051741 | METHOD AND SYSTEM FOR AN ASYMMETRIC PHY OPERATION FOR ETHERNET A/V BRIDGING AND ETHERNET A/V BRIDGING EXTENSIONS - A network device comprising asymmetric, multi-rate, Ethernet MAC and asymmetric, multi-rate, Ethernet PHY communicates signals via a network utilizing A/V bridging services. Higher bandwidth A/V signals are communicated and lower bandwidth signals are received or vice versa. Signals are communicated based on a plurality of different Ethernet protocols and/or data rates. Signals may be communicated based on 10GBASE-T in a first direction and based on a lower rate Ethernet protocol in a second direction. Extended range mode may be utilized. PDUs comprise time stamps, traffic class designations and/or destination addresses. Data rate requests, resource reservation messages and/or registration for delivery of PDUs may be communicated. Time stamps enable end to end transport within a specified latency target. Video signals may be compressed, uncompressed, encrypted, unencrypted and/or formatted for a video display interface. | 2011-03-03 |
20110051742 | Flexible Bandwidth Allocation in High-Capacity Grooming Switches - Apparatus for flexible sharing of bandwidth in switches with input buffering by dividing time into a plurality of frames of time slots, wherein each frame has a specified integer value of time slots. The apparatus includes modules where inputs sequentially select available outputs to which the inputs send packets in specified future time slots. The selection of outputs by the inputs is done using a pipeline technique and a schedule is calculated within multiple time slots. | 2011-03-03 |
20110051743 | Polling method compliant to Bluetooth protocol for increasing transfer efficiency and system thereof - A polling method compliant to Bluetooth protocol is utilized for increasing transfer efficiency. In a Bluetooth piconet, a master queries each slave to determine the slaves supporting a predetermined protocol. The master determines a predetermined address as the instruction of the predetermined protocol. When the master sends a polling packet with the predetermined address to the supporting slaves, the supporting slaves can respond in sequence. In this way, even if the supporting slaves increase, the master only has to send one single polling packet for all the supporting slaves responding, increasing the transfer efficiency. | 2011-03-03 |
20110051744 | EXTERNAL MEMORY DATA MANAGEMENT WITH DATA REGROUPING AND CHANNEL LOOK AHEAD - A device manages data for a digital signal processor. The device includes an external random access memory (RAM), configured to store channel specific data for plural different channels; and a microprocessor, in communication with the external RAM. When receiving the packet, in a transport layer processing the packet, the microprocessor determines a channel of the plural different channels corresponding to an indication in a transport layer header of the received packet. The microprocessor fetches channel specific data specific to the channel into an internal memory internal to the microprocessor from the external RAM, by the transport layer, before the packet is passed to an application layer, thereby avoiding a wait for reading the packet at the application layer. | 2011-03-03 |
20110051745 | METHOD OF ENCAPSULATING DATA IN DIGITAL SATELLITE COMMUNICATION SYSTEM, AND DATA TRANSMISSION APPARATUS THEREFOR - Provided is a satellite network communication system based on Second Generation Digital Video Broad-casting via Satellite (DVB-S2). A method for encapsulating transmission data in a digital satellite communication system includes: determining whether a time at which a reference time information packet has to be inserted into a packet data unit is arrived, in the digital satellite communication system; and if the time at which the reference time information packet has to be inserted into the packet data unit is arrived, transforming the packet data unit in the form of a baseband data packet including the reference time information packet. Therefore, by allowing transmission of Network Clock Reference (NCR) information in a satellite communication environment based on Generic Steam Encapsulation (GSE), bidirectional satellite communications are possible. | 2011-03-03 |
20110051746 | METHOD AND APPARATUS FOR GENERATING DATA FRAME, AND METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DATA FRAME IN WIRELESS COMMUNICATION SYSTEM - A method for generating a data frame in a wireless communication system includes generating a plurality of first headers having information about the number of segments of a payload, generating a plurality of second headers having information about a transmission mode and a length of predetermined segments among segments of the payload, generating a third header having a transmission mode and a length of remaining segments of the payload; generating a fourth header having supplementary information of the payload and error information of the supplementary information and the first to third headers or error information of the supplementary information and the third header; and generating a data frame with the first to fourth headers sequentially allocated. | 2011-03-03 |
20110051747 | SHORT AND LONG TRAINING FIELDS - A method includes receiving a first plurality of symbols comprising complex portions. The method further includes applying conjugate symmetry to the first plurality of symbols, producing a second plurality of symbols comprising no complex portions. The method further includes transforming the second plurality of symbols using an inverse fast Fourier transform, producing a third plurality of symbols. The method further includes interpolating the third plurality of symbols, generating a short training field comprising at least one real portion of the third plurality of symbols, generating a long training field comprising at least one real portion of the third plurality of symbols, and transmitting the short training field and long training field in a WPAN. | 2011-03-03 |
20110051748 | COMMUNICATION APPARATUS AND METHOD IN A COMMUNICATION NETWORK SYSTEM - A communication apparatus including: a reception unit configured to, receive a first frame having a first format and a second frame having a second format in which information is reduced with respect to the first format and extract a first identifier existing in both the first frame and the second frame; a first frame processing unit configured to process the first frame; a second frame processing unit configured to process the second frame; a table including a correspondence between the first identifier and a second identifier indicating whether the first frame and the second frame having the first identifier is in the first format or the second format; and a control unit configured to transfer the first frame or the second frame to one of the first frame processing unit and the second frame processing unit based on the table when the frame is received. | 2011-03-03 |
20110051749 | METHOD OF REFERENCE SIGNAL ALLOCATION IN WIRELESS COMMUNICATION SYSTEMS - A method is provided for determining reference signal positions in a frequency-time domain in an Orthogonal Frequency Division Multiple Access (OFDMA) system. A plurality of sub-carriers are selected in one resource block according to a predetermined mother pattern for reference signal allocation. When a single resource block is assigned for transmission to a user, the reference signal positions are determined corresponding to the plurality of selected sub-carriers in the single resource block. When multiple resource blocks are assigned for transmission to a user, the reference signal positions are determined in the multiple resource blocks by reducing a number of the plurality of selected sub-carriers in the mother pattern for at least one of the multiple resource blocks. | 2011-03-03 |
20110051750 | COMMUNICATION DEVICE AND METHOD - There is provided a communication device performing communication by breaking up a frame into a plurality of links, the communication device includes a dividing means for dividing the frame into units of a predetermined size, a distributing means for distributing the units to a plurality of links, a plurality of storing means for storing the units distributed by the distributed means in payloads of transfer frames for the respective plurality of links, a timer means for measuring a timeout time based on a priority of the frame, and a transmission means for transmitting the transfer frames to another communication device via the plurality of links in one of a case where the units included in the payloads of the transfer frames becomes to a predetermined amount and a case where the timeout time measured by the timer becomes to a predetermined value. | 2011-03-03 |
20110051751 | NETWORK SYSTEM OF TIME BAND RESERVATION, FRAME TRANSFER METHOD, AND NETWORK DEVICE - In a network system of this invention including a plurality of network devices that transfer frames by repeating, in a constant cycle, a reserved transfer interval that is a time band, in which a frame is transferred with a reservation and a free transfer interval that is a time band, in which a frame is freely transferred, a relay network device that links a first network device that is a transmission source of a frame and a second network device that is a transmission destination of the frame and the first network device execute a reservation processing such that the same time band within the reserved transfer interval is reserved and transfer the frame from the first network device to the second network device on the basis of the reservation result. | 2011-03-03 |
20110051752 | method for clock link automatic protection in packet transport networks - A method for clock link automatic protection in packet transport networks is disclosed. The method includes that: extending the clock synchronization status message to allow said clock synchronization status message to include: a clock identification (ID), a quality grade of clock, the number of network elements that the clock has passed, a clock alarm indication, and a forbidden-use indication; each network element in the clock link processes the clock synchronization status message; and said each network element selected a clock source according to the clock synchronization status message. The method in the present invention allows the network elements to be able to automatically select the optimal routing clock, forbid non-optimal routing clocks to participate in the selection, and effectively prevent the clocks from looping. | 2011-03-03 |
20110051753 | WIDEBAND CABLE SYSTEM - A wideband cable modem system increases available bandwidth of a single channel by encoding a data stream into wideband packets. The wideband packets are associated with a logical wideband channel that extends over multiple physical downstream cable channels. | 2011-03-03 |
20110051754 | MEASUREMENT AND ADJUSTMENT OF REAL-TIME VALUES ACCORDING TO RESIDENCE TIME IN NETWORKING EQUIPMENT WITHOUT ACCESS TO REAL TIME - A system and method of synchronizing clocks in a distributed network is disclosed. A simple 1-pulse-per-second timing pulse is routed to time-stamping units in each network device and utilized to measure traffic-dependent synchronization packet residence delays within network elements. Synchronization messages are updated to reflect the measured residence times, thus creating transparent clocks that can readily be synchronized across the network. The simple timing pulse architecture allows the method to be applied readily both to new designs and to retrofit existing hardware. | 2011-03-03 |
20110051755 | Frequency Conversion Laser Head - A laser assembly is configured with a frequency conversion laser head operative to shift a fundamental frequency of input light to the desired frequency of an output light. The frequency conversion laser head includes a dump means operative to guide an unconverted output light at the fundamental frequency outside the case of the frequency conversion laser head. The dump means is configured with a guide optics operative to couple the output light at the fundamental frequency to a fiber terminating outside the case of the frequency conversion laser head. | 2011-03-03 |
20110051756 | BEAM IRRADIATION APPARATUS - A beam irradiation apparatus includes a light source which outputs a laser beam, a convergent lens into which the laser beam output from the light source is entered, and a scanning portion which makes the laser beam transmitted through the convergent lens scan on a target region. In the beam irradiation apparatus, the laser light source is arranged such that a pn junction surface of a laser chip is parallel with the vertical direction. Further, length of the laser beam in the vertical direction on the target region is set by length of a light emitting portion of the laser light source in the vertical direction. | 2011-03-03 |
20110051757 | CONNECTION UNIT AND LASER OSCILLATING APPARATUS HAVING THE SAME - A laser oscillation device includes an oscillation unit oscillating a laser, a shutter unit covering the laser, and a connection unit covering the laser, connecting the oscillation unit and the shutter unit and including a first connection part supported by the oscillation unit and a second connection part supported by the shutter unit. The first and second connection parts are separated from each other, and one of the first and second connection parts covers at least a portion of the other one of the first and second connection parts. | 2011-03-03 |
20110051758 | HIGH POWER SEMICONDUCTOR LASER DIODES - A high power laser source comprises at least a bar of laser diodes with a first coefficient of thermal expansion (CTE | 2011-03-03 |
20110051759 | METHOD AND SYSTEM FOR POWERING AND COOLING SEMICONDUCTOR LAYERS - A semiconductor laser system includes a diode laser tile. The diode laser tile includes a mounting fixture having a first side and a second side opposing the first side and an array of semiconductor laser pumps coupled to the first side of the mounting fixture. The semiconductor laser system also includes an electrical pulse generator thermally coupled to the diode bar and a cooling member thermally coupled to the diode bar and the electrical pulse generator. | 2011-03-03 |
20110051760 | Active spectral control of DUV laser light source - According to aspects of an embodiment of the disclosed subject matter, a line narrowed high average power high pulse repetition laser micro-photolithography light source bandwidth control method and apparatus are disclosed which may comprise a bandwidth metrology module measuring the bandwidth of a laser output light pulse beam pulse produced by the light source and providing a bandwidth measurement; a bandwidth error signal generator receiving the bandwidth measurement and a bandwidth setpoint and providing a bandwidth error signal; an active bandwidth controller providing a fine bandwidth correction actuator signal and a coarse bandwidth correction actuator signal responsive to the bandwidth error. The fine bandwidth correction actuator and the coarse bandwidth correction actuator each may induce a respective modification of the light source behavior that reduces bandwidth error. The coarse and fine bandwidth correction actuators each may comprise a plurality of bandwidth correction actuators. | 2011-03-03 |
20110051761 | OPERATING METHOD OF EXCIMER LASER SYSTEM - An operating method of an excimer laser system includes following steps. First, a halogen gas with an injection volume is injected into a chamber until a pressure of the chamber is a total pressure. The halogen gas in the chamber has a halogen pressure. Thereafter, a driving voltage is provided between two electrodes in the chamber so as to start the excimer laser system. The halogen pressure and a full width half maximum of a laser light generated by the excimer laser system have negative relation, and the halogen pressure and the driving voltage have positive relation. | 2011-03-03 |
20110051762 | Pulse Mode Modulation In Frequency Converted Laser Sources - Methods of operating a frequency-converted laser source are disclosed. According to particular disclosed embodiments, a laser diode is driven in a pulsed mode to define pixel intensity values corresponding to desired gray scale values of image pixels in an image plane of the laser source. The pixel intensity values are a function of a laser control signal comprising a discontinuous pulse component, a relatively constant intensity component I, and a continuously variable intensity component I*. The pulse width w of the discontinuous pulse component is selected from a set of discrete available pulse widths according to a desired pixel gray scale value. A low-end pulse width w of the set of available pulse widths is established for a range of low-end pixel gray scale values and progressively larger pulse widths w are established for ranges of progressively higher pixel gray scale values. The relatively constant intensity component I makes a relatively insignificant contribution to pixel intensity at the low-end pulse width w for the range of low-end pixel gray scale values and assumes a non-zero value for enhanced conversion efficiency at the progressively larger pulse widths w established for the higher pixel gray scale values. The continuously variable intensity component I* varies according to the desired gray scale value of the selected pixel and the contributions of the relatively constant intensity component I and the pulse width w to pixel intensity. | 2011-03-03 |
20110051763 | Determining and setting the frequency modulation index of a laser in a CPT frequency standard - A technique for determining the modulation index of a frequency-modulated laser source from the absorption spectrum that is produced when light from the laser passes through an alkali metal vapor cell. The absorption spectrum contains a primary minimum and a number of satellite minima and the modulation index is determined using ratios of the minima. The technique is used to calibrate the laser source of a CPT frequency standard so that it operates at a desired modulation index. Ways are disclosed of using the technique to calibrate the CPT frequency standard either manually or automatically. The calibration may be done when the CPT frequency standard is built, when the frequency standard is initialized, or during normal operation of the CPT frequency standard. | 2011-03-03 |
20110051764 | LASER DIODE DRIVE CIRCUIT - A laser diode drive circuit includes a power supply circuit connected to an anode of a laser diode to supply a variable voltage to the laser diode, and a drive current control circuit connected to a cathode of the laser diode to control a current of the laser diode. The power supply circuit generates a start-up voltage which is equal to the sum of the maximum drive voltage that is larger than the drive voltage and a predetermined first reference voltage, acquires a cathode voltage of the laser diode while the start-up voltage is generated, generates a voltage by lowering from the start-up voltage so as to diminish the difference between the acquired cathode voltage and the first reference voltage, and the first reference voltage is the minimum cathode voltage necessary to supply a predetermined current to the laser diode by the drive current control circuit. | 2011-03-03 |
20110051765 | SEMICONDUCTOR LASER DEVICE AND METHOD FOR MANUFACTURING THE SAME - A semiconductor laser device includes a semiconductor multilayer structure selectively grown on a substrate other than on a predetermined region of the substrate. The semiconductor multilayer structure includes an active layer, and has a stripe-shaped optical waveguide extending in a direction intersecting a front facet through which light is emitted. The active layer has an abnormal growth portion formed at a peripheral edge of the predetermined region, and a larger forbidden band width portion formed around the abnormal growth portion and having a larger width of a forbidden band than that of a portion other than the abnormal growth portion of the active layer. The optical waveguide is spaced apart from the abnormal growth portion and includes the larger forbidden band width portion at the front facet. | 2011-03-03 |
20110051766 | Laser Light Source - A laser light source comprises, in particular, a semiconductor layer sequence ( | 2011-03-03 |
20110051767 | HIGH-POWER DIODE LASER AND METHOD FOR PRODUCING A HIGH-POWER DIODE LASER - In a high-power diode laser, facets which lie opposite one another contain in each case an amorphous layer system composed of silicon and carbon. The layer system is formed to perform the function both of a passivation layer and of the reflection-determining functional layers. This measure makes it possible to produce a high-power diode laser having a high COD threshold in conjunction with a long service life by way of a simplified method. | 2011-03-03 |
20110051768 | Semiconductor Light Emitting Devices With Non-Epitaxial Upper Cladding - The AlGaN upper cladding layer of a nitride laser diode is replaced by a non-epitaxial layer, such as metallic silver. If chosen to have a relatively low refractive index value, the mode loss from absorption in the non-epitaxial cladding layer is acceptably small. If also chosen to have a relatively high work-function, the non-epitaxial layer forms an electrical contact to the nitride semiconductors. An indium-tin-oxide layer may also be employed with the non-epitaxial cladding layer. | 2011-03-03 |
20110051769 | SEMICONDUCTOR LIGHT EMITTING DEVICE - A semiconductor light emitting device includes: a stacked body including a first and a second semiconductor layers of a first and second conductivity types respectively, and a light emitting layer provided between thereof; a first and a second electrodes in contact with the first and second semiconductor layers respectively. Light emitted is resonated between first and second end surfaces of the stacked body opposed in a first direction. The second semiconductor layer includes a ridge portion and a wide portion. A width of the ridge portion along a second direction perpendicular to the first and the stacking directions is narrower on the second electrode side than on the light emitting layer side. A width of the wide portion along the second direction is wider than the ridge portion. A width of the narrow part of the second electrode along the second direction is narrower than that on the ridge portion | 2011-03-03 |
20110051770 | SEMICONDUCTOR LASER DEVICE - A semiconductor laser device includes a semiconductor-layer lamination ( | 2011-03-03 |
20110051771 | Optoelectronic Component and Method for Producing an Optoelectronic Component - An optoelectronic component contains an epitaxial layer sequence ( | 2011-03-03 |