44th week of 2008 patent applcation highlights part 35 |
Patent application number | Title | Published |
20080267141 | Identification of long links within a wireless network - An apparatus and method of identifying long links within a wireless network is disclosed. The method includes identifying long links within a wireless network. The method includes a first node estimating a link quality of a wireless link between the first node and a second node of the wireless network. The first node uni-casts packets to the second node. The first node monitors a packet acknowledgment success rate. The first node identifies the wireless link to be a long link if the link quality is above a link threshold, and the packet acknowledgment success rate is below an acknowledgment threshold. | 2008-10-30 |
20080267142 | Distributed Antenna Wlan Access-Point System and Method - A wireless local area network (WLAN) access point (AP) system comprises a first plurality of distributed remote antenna units operative to transmit and receive RF signals and a central WLAN beam-forming unit connected to each distributed remote antenna unit and operative to provide communication between the antenna units and a second plurality of wireless clients. The WLAN AP system can be used for simultaneous communications with the wireless clients over the same radio frequency (RF) channel while avoiding mutual interferences. | 2008-10-30 |
20080267143 | TERMINAL INITIATED CONTEXT PRESERVATION - A method, a system, a network device, a terminal device, and computer programs for controlling a packet data protocol context in a mobile communication system. According to an example embodiment, an enhanced context modification request may be generated at a terminal device of the mobile communication system by adding a preservation information indicating a desired preservation of a packet data protocol context. The enhanced context modification request may be transmitted towards a core network of the mobile communication system, and a context-related decision may be controlled at the core network based on the preservation information. | 2008-10-30 |
20080267144 | SYSTEM AND METHOD FOR MANAGING BROADCAST AND/OR MULTICAST BASED COMMUNICATION SESSIONS FOR MOBILE NODES | 2008-10-30 |
20080267145 | Methods and Apparatus for Managing Wireless Networks Using Geographical-Level and Site-Level Visualization - A WLAN system and method enables network modeling and management through an easy-to-use user interface. A console coupled to the WLAN is configured to display a first set of graphical entities representing locations of the multiple sites in a geographical view, and display a second set of graphical entities in a site view representing a subset of the components selected in response to user input. An XML format may be used to display the various views on a browser operating within the console. | 2008-10-30 |
20080267146 | SYSTEM AND METHOD FOR SENDING AND RECEIVING PACKETS - A system and method for sending and receiving packets is provided. An embodiment includes a system comprising a wireless communication device configured to communicate with at least one application server via device access node and a wireless local area network. The wireless communication device is configured to communicate with the device access node through the wireless local area network using at least one protocol layer that is native to the wireless local area network, and using at least one protocol layer that is native to the device access node. The device access node is configured to send and receive application information carried over above-described protocol layers. | 2008-10-30 |
20080267147 | Automatic Discovery and Connectivity Protocol for Bluetooth Scatternet Formation - A system and method for wireless communication by a plurality of devices in a scatternet network is provided. The method includes discovering one or more of the plurality of devices in the scatternet network. The method includes determining roles for one or more of the plurality of devices, and transferring data between one or more of the plurality of devices. The discovering of other devices, determining roles, and transferring data between one or more of the plurality of devices occur substantially simultaneously. | 2008-10-30 |
20080267148 | Communication unit, system and method for saving power therein - A communication unit comprises a receiver for receiving a message sent on an allocation channel, packet identifying logic, capable of identifying a data type of the received message, operably coupled to buffer logic for buffering data packets to be sent to the second communication unit. In an active mode of operation, the receiver of the communication unit is capable of intermittently receiving the message sent on the allocation channel and transition to continuously receive the message sent on the allocation channel in response to either: the buffer logic identifying that data packets are to be transferred to the second communication unit; or the packet identifying logic receiving a communication resource allocation message and identifying resource allocation data therein. | 2008-10-30 |
20080267149 | Selecting receiver parameters based upon transmitting device identification via transmission characteristics - A wireless device includes at least one antenna, an RF interface, and processing circuitry coupled to the RF interface and indirectly to the at least one antenna. The wireless device identifies other wireless devices that service based upon transmission characteristics of wireless signals received from other wireless devices and/or relative positions of the other wireless devices with respect to itself. In a first operational period, the wireless device determines transmission characteristics of the other wireless devices. Then, during a second operational period, without further interaction with the other wireless devices, the wireless device determines communication link characteristics based simply upon transmission characteristics of the other wireless devices. | 2008-10-30 |
20080267150 | Motion adaptive wireless local area nework, wireless communications device and integrated circuits for use therewith - A circuit includes an on-chip gyrating circuit that generates a motion parameter based on motion of the circuit. A global positioning system (GPS) receiver receives a GPS signal and that generates GPS position data based on the GPS signal. A processing module processes the motion parameter to produce motion data, generates position information based on at least one of the GPS position data and the motion data, converts outbound data into an outbound symbol stream, and converts an inbound symbol stream into inbound data. A wireless local area network (WLAN) transceiver section generates an outbound RF signal from the outbound symbol stream, and converts an inbound RF signal into the inbound symbol stream. | 2008-10-30 |
20080267151 | Wireless Local Area Network Antenna Array - A wireless local area network (“WLAN”) antenna array (“WLANAA”) is disclosed. The WLANAA may include a circular housing having a plurality of radial sectors and a plurality of primary antenna elements. Each individual primary antenna element of the plurality of primary antenna elements may be positioned within an individual radial sector of the plurality of radial sectors. | 2008-10-30 |
20080267152 | MULTIMEDIA BROADCAST/MULTICAST SERVICE (MBMS) SERVICE DISCOVERY - A system and method for discovery of and access to service in a Multimedia Broadcast/Multicast Service (MBMS) environment by user equipment (UE) when roaming. The UE may be associated with a plurality of URLs including a home URL and a symbolic URL. When the UE is roaming, the symbolic URL is resolved by a local DNS server to a local URL that is assessed by a local Service Discovery server to determine the MBMS services that may be accessed by the UE in the visiting network. Further, when roaming, the home URL is resolved by the local DNS server and forwarded to a home Service Discovery server where the home URL is assessed to determine the MBMS services that may be accessed by the UE in the home network. Accordingly, the UE is operable to access home network MBMS services as well as visiting network MBMS services when roaming. | 2008-10-30 |
20080267153 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR PERFORMING HOME NODE-B IDENTIFICATION AND ACCESS RESTRICTION - A method and a wireless transmit/receive unit (WTRU), including a universal subscriber identity module (USIM), for identifying a closed subscriber group (CSG) cell are disclosed. The WTRU receives a broadcast from a cell including a cell identifier (ID). If the cell ID is associated with a CSG cell, the WTRU determines whether the CSG ID is programmed in the USIM. The cell broadcast may include a single bit information element (IE) indicating that the cell is a CSG cell. If the cell ID is a CSG ID, the cell ID may further include a plurality of fields which indicate at least one of a country, a region, an operator, and a home evolved Node-B (HeNB) number. The cell broadcast may further include a bit indicating whether the CSG cell is public or private. The cell broadcast may further include a bit indicating that emergency calls are allowed from all users. | 2008-10-30 |
20080267154 | METHOD AND SYSTEM FOR AVOIDING HANGING PDP CONTEXTS - A method and system for avoiding hanging Packet Data Protocol (PDP) contexts in a General Packet Radio Service (GPRS) network. A time-out period is included in a request message to create a PDP context. The request message is transmitted from a first GPRS Support Node (GSN) to a second GSN. The second GSN receives the request message and transmits a response message to the first GSN. If the second GSN is unable to create the PDP context within the time-out period, the response message informs the first GSN that creation of the PDP context has been aborted. A Network Service Access Point Identifier (NSAPI) may be included in the response message so that the first GSN may request the second GSN to delete the request for creating the PDP context after a N3-T3 timeout of the first GSN has expired. | 2008-10-30 |
20080267155 | WIRELESS LOCAL AREA NETWORK DEVICE SUPPORTING ENHANCED CALL FUNCTIONS - A wireless local area network (WLAN) transceiving integrated circuit services voice communications in a WLAN with at least one other wireless device and includes a WLAN interface, a transcoder, and a switch box. The WLAN interface wirelessly communicates with at least one wireless device to receive inbound packetized audio data from the at least one wireless device and to transmit outbound packetized audio data to the at least one wireless device. The transcoder receives the inbound packetized audio data and converts the inbound packetized audio data to inbound Pulse Code Modulated (PCM) WLAN audio data. The WLAN interface also receives outbound PCM WLAN audio data and converts the outbound PCM WLAN audio data to the outbound packetized audio data. The switch box operably couples between the transcoder and a PCM bus, to which an audio COder/DECoder (CODEC) couples. A speaker and a microphone coupled to the audio CODEC. The switch box enables the wireless transceiving integrated circuit to perform call conferencing operations, call forwarding operations, call hold operations, call muting operations, and call waiting operations. | 2008-10-30 |
20080267156 | Wireless Communication Unit and Method for Processing a Code Division Multiple Access Signal - A method of processing a code division multiple access signal comprises receiving a CDMA signal; processing the received CDMA signal with a CDMA detector; and extracting control channel information from the processed signal. The extracted control channel information is used to equalize a subsequent received CDMA signal, to make estimation of equalizer coefficients more reliable and increasing average data throughput. | 2008-10-30 |
20080267157 | Method and apparatus for packet wireless telecommunications - In a wireless telecommunications network, a Code Division Multiple Access (CDMA) scheme is applied to data to encode it. The encoded data transmitted in the uplink using an Orthogonal Frequency Division Multiplexing (OFDM) frame structure including a cyclic prefix (CP). The CDMA encoded data may be time multiplexed with Single Carrier-Frequency Division Multiple Access (SC-FDMA) transmissions. The CDMA transmissions may be used for relatively small payloads, such as those associated with voice traffic and control signals, and the SC-FDMA transmissions used for higher date rate transmissions. This enables autonomous transmission, without scheduling, for smaller payloads. A transmitter includes a selector | 2008-10-30 |
20080267158 | TRANSMIT DIVERSITY FOR ACKNOWLEDGEMENT AND CATEGORY 0 BITS IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting acknowledgement/nonacknowledgement (ACK/NACK) signals including multiplexing ACK/NACK signals; and repeatedly transmitting for predetermined times the multiplexed signal with each of repetitions of transmitting the multiplexed signal being spread in a frequency domain and being mapped to a plurality of discrete resource units each having a pair of neighboring subcarriers and a predetermined number of Orthogonal Frequency Division Multiplexing (OFDM) control symbols. | 2008-10-30 |
20080267159 | Method and System for Providing Communication Between Several Nodes and a Master - A method for communication between several nodes and a maste: in a communication network, wherein each node is assigned a time slot in which to transmit. The nodes are arranged in groups, so that the first group comprises all nodes inside the coverage area of the master. The second group is outside the coverage area of the master but inside the coverage area of any node of the first group, etc. Any node reaches the master or is being reached by the master via a node in a previous group in a multi-hop approach. The time slots are assigned in dependence of the distance to the master. In a message period, in which the master sends a message to any node, the first group is assigned a first group of time slots, and the second group is assigned a second group of time slots, following the first group of time slots, etc. In this way, the message from the master can be sent out to all nodes in a single message period. When a node wants to send information to the master, the time slots are arranged in the opposite order, in an information period, which means that the information can reach the master in a single information period. | 2008-10-30 |
20080267160 | Systems and Methods for Managing Timing Functions in Multiple Timing Protocols - One embodiment of the present invention includes a system for managing timing functions associating with at least one timing protocol. The system comprises a controller configured to implement a plurality of functions at each of a respective plurality of scheduled times. The system also comprises a time protocol converter configured to convert each of the plurality of scheduled times to a respective plurality of time values associated with a master timing protocol. The system further comprises a master timer controller configured to generate a plurality of control signals associated with the plurality of functions based on an accumulated value of a master timer associated with the master timing protocol relative to the plurality of time values. | 2008-10-30 |
20080267161 | SIGNALING OF RANDOM ACCESS PREAMBLE TIME-FREQUENCY LOCATION IN WIRELESS NETWORKS - Embodiments of the present disclosure provide a base station sub-system, a method of allocating random access configurations and a method of downlink signaling of random access configurations. In one embodiment, the base station sub-system is for use in a wireless communication system and includes an allocator configured to allocate random access configurations having a plurality of time slots that use a single frequency resource. Additionally, the base station sub-system also includes a transmitter configured to signal at least one index of the random access configurations and a random access receiver balancing in time the processing load of the random access detection of different cells served by the base station. | 2008-10-30 |
20080267162 | Method and Apparatus Performing Express Forwarding Bypass for Time-Critical Frames - A method, apparatus and computer program product for the express forwarding bypass are presented. A timer (NAV) is maintained at each respective node of a wireless LAN, the timer (NAV) set to a corresponding time period during which the respective node must refrain from transmitting on a channel. The first node of said plurality of nodes has a time-critical (TC) frame. The first node detects a frame to be express-forwarded by a second node. The first node decrements the duration field by a first predetermined time increment (DT | 2008-10-30 |
20080267163 | APPARATUS AND METHOD FOR MOVING A RECEIVE WINDOW IN A RADIO ACCESS NETWORK - A method of moving a receiving window in a wireless mobile communication system, wherein the AM RLC of the transmitting side sends information of the last discarded SDU regardless of continuity of the discarded SDUs. The AM RLC of the receiving side checks whether all SDUs from the start point of the receiving window up to the last discarded SDU are successfully received, delivers the SDUs that are successfully received to an upper layer, and discard only those SDUs that are not successfully received. | 2008-10-30 |
20080267164 | Fine Time Tracking With Improved Resolution - The present invention relates to compensation method and circuit for compensating time drifts in a receiver suited for multi-path environment. The time drifts are separated into a first component common to groups of paths belonging to the same radio link, for example a radio link of a connection between a user equipment and a base station, and second components valid for each individual path belonging to a group. The first component is processed by employing first feedback means with a first bandwidth, and the second components are processed by employing a second feedback means with a second bandwidth, wherein the first bandwidth is set to a value higher than the second bandwidth. Thereby, the bandwidth of the loop devoted to the individual tracking of each path can be slower and adjusted to environmental conditions, so as to allow application of a principle of interference mitigation for improving time resolution. | 2008-10-30 |
20080267165 | UPLINK SYNCHRONIZATION MAINTENANCE PRINCIPLES IN WIRELESS NETWORKS - A cell within cellular network includes user equipments (UEs) that transmit data to a base station (eNB). UEs are synchronized to the eNB upon entry to the cell. If a particular UE has data to transmit, it will be placed in a connected state and scheduled for transmission. Over a period of time, not all of the UEs will have data to transmit. The UEs are tracked as a scheduled portion and an unscheduled portion, wherein a UE is included in the scheduled portion in response to receiving a scheduling request from the UE. Synchronization is maintained between the eNB and each UE in the scheduled portion by sending a timing adjustment (TA) command if needed in response to receiving a scheduled transmission from each respective UE in the scheduled portion; Synchronization is maintained between the eNB and each UE in the unscheduled portion by allocating a periodic reference signal (sync-RS) to each UE in the unscheduled portion and by sending a respective timing adjustment (TA) command if needed to each respective UE in the unscheduled portion in response to a respective sync-RS received from each UE in the unscheduled portion. | 2008-10-30 |
20080267166 | Method and Apparatus for Providing a Multimedia Service - A method of providing a combinational communication service to a user of a communication network where a physical channel is defined for the user in respect of a circuit switched connection primarily for carrying real time data, the method comprising interrupting the transmission of real time data on said physical channel in order to allow non-real time data to be transmitted on the physical channel or to allow signalling, for setting up a packet switched bearer for carrying non-real time data, to be transmitted on the physical channel. | 2008-10-30 |
20080267167 | SYSTEM AND METHOD FOR SET UP OF AN IP COMMUNICATION TO THE ORIGIN OF A CIRCUIT SWITCHED CALL - A mobile device for operation within a service provider's wide area wireless network system comprises a wireless communication system, a circuit switched application, and an IP application. The circuit switched application receives circuit switched call signaling from the wireless service provider network. The circuit switched call signaling comprises an MSISDN identifying the origin of a circuit switched call. The IP application determines whether the origin of the circuit switched call is capable of internet protocol communications by querying a contact database (or receiving an alert from the service provider network) to determine whether the MSISDN identifying the origin of the circuit switched call is associated with a unique uniform resource identifier. If the origin of the circuit switched call is capable of internet protocol communications, initiating an internet protocol communication thereto. | 2008-10-30 |
20080267168 | Slow Adaptation of Modulation and Coding for Packet Transmission - Systems and methods for performing MCS adaptation are provided. In some cases, the network performs MCS adaptation based on received ACKs. | 2008-10-30 |
20080267169 | Method and system for remote diagnosis of a device over a communication network - A device in a voice over packet (VOP) network includes a transceiver operable to transmit and receive session initiation protocol (SIP) communications over at least a portion of a VOP network. Also included is a processor cooperatively operable with the transceiver. The processor is configured to facilitate, responsive to receipt of an invite request, determining if the invite request is a diagnostic invite. If the invite request is a diagnostic invite, then the audible alert and display of caller id are suppressed. The processor is configured to generate a final response to establish two-way media flow and a dialog. After the dialog is established, diagnostics is launched on the device, and responsive to receipt of diagnostic information requests and after two-way media flow is established, the device responds with diagnostic information responses. | 2008-10-30 |
20080267170 | System and method for presenting media to multiple parties in a SIP environment - In one embodiment, a network node is operable, responsive to receiving a SIP-based request from a calling party, for presenting media in a SIP network environment by establishing an inbound media session leg with the calling party and one or more outbound media session legs with a corresponding number of target parties. The network node includes functionality for patching the inbound and outbound media session legs to establish an end-to-end communications path respectively between the calling party and one or more target parties. | 2008-10-30 |
20080267171 | METHODS AND APPARATUS FOR OBTAINING VARIABLE CALL PARAMETERS SUITABLE FOR USE IN ORIGINATING A SIP CALL VIA A CIRCUIT-SWITCHED NETWORK FROM A USER EQUIPMENT DEVICE - Methods and apparatus for use in processing Session Initiation Protocol (SIP) calls in a network environment which includes a circuit-switched (CS) network and an Internet Protocol (IP) multimedia subsystem (IMS) network. In one illustrative technique, a SIP Register message is sent from a mobile communication device to the IMS network for registration of the mobile device. A SIP 200 OK message is received by the mobile device from the IMS network in response to sending the SIP Register message. The SIP 200 OK message has one or more variable call parameters or a network address at which to obtain the variable call parameters. The variable call parameters may include an E.164 number which may be dynamically assigned to the mobile device by the IMS network, and/or a time or timer value which defines a time period for which the E.164 number remains assigned to the mobile device. Other information may be included such as preferred access network/technology information. The variable call parameters are stored in memory of the mobile device and utilized for processing each one of a plurality of SIP calls involving the mobile device. After registration, the mobile device may initialize a timer with the timer value, run the timer and, when processing a SIP call, cause a CS call setup message which includes the E.164 number to be sent to the IMS network for routing of the call if the timer has not yet expired. If the timer has expired, the mobile device may refrain from utilizing the deassigned E.164 number in the CS call setup message and alternatively obtain and utilize a new E.164 number or an altogether different technique for processing of the SIP call. Alternative techniques for obtaining parameters and formatting the data are also described. | 2008-10-30 |
20080267172 | Location object proxy broker - The function of determination of location is separated from the function of gathering information based on determined location by use of a Location Object (LO) proxy between an initiating VoIP capable device and a positioning center. The LOProxy queries an appropriate location database using a location key, and injects a PIDF-LO into a routing SIP message otherwise without location. A SIP request without location is received from a VoIP capable device. The SIP request contains messages indicating the type of location generator or service needed. A location key (like a telephone number or SIP URI), in addition to the type of location generator or service needed, is included in a SIP request. A location object (LO) broker may be used between a routing SIP message and a positioning center to direct a routing SIP message to an appropriate one of a plurality of location object (LO) proxies. | 2008-10-30 |
20080267173 | Method for the Improved Use of an Interface System with Address Components - The invention relates to a method for the improved use of an interface system (GW) for connections of subscribers (A-TIn, B-TIn) of at least two separate communications networks (KN | 2008-10-30 |
20080267174 | Method, Apparatus And Software For Providing Communications Between A Packet Switched Network And A Public Switched Telephone Network - A method, apparatus and software is disclosed in which a gateway server provides communications between an Internet Protocol (IP) network and Public Switched Telephone Network (PSTN) to enable messaging between an IN server device in the PSTN and a Session Initiation Protocol (SIP) Application Server (AS) on the IP network. | 2008-10-30 |
20080267175 | ACCELERATION OF LABEL DISTRIBUTION PROTOCOL (LDP) SESSION SETUP - In one embodiment, a network device executes a Label Distribution Protocol (LDP) that sends LDP Hello messages at a default rate. The rate of sending LDP Hello messages is modified to accelerate the establishment of an LDP session between the network device and an LDP peer. | 2008-10-30 |
20080267176 | SELECTIVE PRESERVATION OF NETWORK STATE DURING A CHECKPOINT - A computer implemented method, data processing system, and computer program product for selectively preserving network state during a checkpoint operation. Packets flowing through a network stack are examined to determine whether the packets belong to a WPAR under checkpoint. If one or more packets belong to a WPAR under checkpoint, a filter is used to block the packets from flowing through the network stack. Address information in each blocked packet is checked against an access list of allowed communications to determine if the access list indicates that a packet is an allowed packet. If the access list indicates that one of the packets is an allowed packet, that packet is unblocked and allowed to continue flowing through the network stack during the checkpoint operation. If the access list indicates that another of the packets is not an allowed packet, that packet is discarded during the checkpoint operation. | 2008-10-30 |
20080267177 | Method and system for virtualization of packet encryption offload and onload - A method for processing a packet includes receiving the packet in a network interface card (NIC), obtaining a first classification for the packet, placing the packet in one of a first plurality of receive rings based on the first classification, obtaining a security association (SA) from one of a plurality of security association database (SADB) partitions, decrypting the packet using the SA, obtaining a security policy (SP) from one of a plurality of security policy database (SPD) partitions, determining an admittance of the packet based on the SP, obtaining a second classification for the packet based on the admittance, placing the packet in one of a second plurality of receive rings based on the second classification, and sending the packet to a host operatively connected to the NIC, wherein the packet is further processed by the host. | 2008-10-30 |
20080267178 | Remote control multiplexing system and method - There is provided a device and method for providing remote control of a computer system. An exemplary remote control multiplexing system comprises a first viewing application that is adapted to allow a controlling computer to control a remote computer via a communication link and a connection multiplexer that is adapted to establish a first communication session with the first viewing application and a second communication session with a second viewing application and to deliver packets received from the remote computer via the communication link to the first viewing application and the second viewing application independently as though each of the first viewing application and the second viewing application is an only viewing application in communication with the connection multiplexer. | 2008-10-30 |
20080267179 | Packet processing - Network devices, systems, and methods are provided for packet processing. One network device includes a network chip including logic and a number of network ports for the device for receiving and transmitting packets therefrom. The logic is operable to group a number of ports into a membership group based on a criteria, and define a filter index in association with a network packet to indicate the membership group. | 2008-10-30 |
20080267180 | Stacked tagging for broadcasting through hierarchy of meshes - One embodiment relates to a method of processing a broadcast packet by a switch. If the packet is received from another switch within a same mesh, then the packet is flooded to appropriate destination ports based on a flood map corresponding to an existing mesh tag in the packet. If the packet is received from an end node, then a new mesh tag is added to the packet and then the packet is flooded to appropriate destination ports based on a flood map corresponding to the new mesh tag in the packet. If the packet is received from a meta mesh, then an existing meta-mesh tag is stripped from the packet, a mesh tag in the packet is modified, and the packet is flooded to appropriate destination ports based on a flood map corresponding to the modified mesh tag in the packet. Other embodiments, aspects and features are also disclosed. | 2008-10-30 |
20080267181 | Selective Multicasting of Sensor Data for Reliable Delivery - Described is a method for reliable transmission of sensor data and sensor commands. The method is particularly useful for shared packet networks and lossy wireless networks where the rate of packet drops can be significant. A network access node receives a data packet that includes the sensor data and multicasts the data packet towards an aggregation node. Each data packet preferably is transmitted over a unique network path. The number of multicast data packets is determined according to one or more network parameters such as network congestion, packet drop probability, the priority and class of service of the data packet, and the number of unique network paths between the network access node and an aggregation node. The first data packet to arrive at the aggregation node is forwarded to the application node and subsequently received data packets with identical sensor data are discarded. | 2008-10-30 |
20080267182 | Load Balancing Algorithms in Non-Blocking Multistage Packet Switches - The present invention provides a method for balancing unicast or multicast flows in a multistage non-blocking fabric, wherein the fabric comprises at least one internal switching element (SE) stage, an input SE stage and an output SE stage. The method comprises: (a) receiving cells into the fabric wherein each cell is associated with an input subset and associated with an output subset according to the source and destination address of the cell, (b) assigning each cell to a flow, wherein cells sourced from the same input subset, and bound for the same output subset, or multiple output subsets, are assigned to the same flow, and (c) transmitting flows through the internal SE stage wherein cells of a particular flow are distributed among the internal switching elements, wherein the cells of each particular flow transmitted at each internal SE differs by at most h, wherein h is positive, whereby the flow in the fabric is balanced. | 2008-10-30 |
20080267183 | Infiniband Multicast Operation in an LPAR Environment - A method, computer program product, and data processing system for providing system-area network (SAN) multicasting functionality in a logically partitioned (LPAR) data processing system in which a channel adapter is shared among a plurality of logical partitions is disclosed. A preferred embodiment of the present invention allows LPAR “hypervisor” firmware to assume the responsibility for multicast protocol handling and distribution of packets among logical partitions. | 2008-10-30 |
20080267184 | LINK AGGREGATION METHODS AND DEVICES - A method of aggregating a plurality of packet based communication channels is provided by the system. The communication channels connect two common endpoints, and aggregation devices are present at each endpoint to implement an aggregation policy. The system provides a dynamic aggregation system where an aggregation policy is employed on a per packet flow basis. Packet flows can be classified by application type, so that an appropriate aggregation policy can be used for packets belonging to the flow. The selected aggregation policy is used for each flow within the aggregation devices at each endpoint. | 2008-10-30 |
20080267185 | FIELD MODULATION FOR TRANSFER AND MEASUREMENT OF FLOW STATISTICS - A first network device determines flow statistics information associated with a flow. The first network device modulates the time-to-live (TTL) header field in a packet associated with the flow to include flow statistics information. The packet includes a header and a payload. The first network device transmits the packet to a second network device. The second network device demodulates the TTL header field to determine flow statistics information. | 2008-10-30 |
20080267186 | Method to Transfer Data Packets From First Portable Source Endpoint Belonging to Moving Network to Second Destination Endpoint Belonging to Second, Preferably Packet Oriented Network - Address translation is performed by a home domain of a first, e.g., mobile, network which may be moving relative to a second, e.g., packet oriented network, to convert the address of a first endpoint in the mobile network, associated with the home address of the first network to a second destination endpoint belonging to the second network. | 2008-10-30 |
20080267187 | Method for Providing Virtual Private Network Services Between Autonomous Systems - The present invention relates to providing virtual private network (VPN) services between two or more Autonomic Systems (AS). An aggregation edge router (ASBR) is provided in two or more autonomous systems (Asx,Asy). The aggregation edge routers are configured such that routing peering between the two or more autonomous systems is done between the aggregation edge routers in these autonomous systems. Each aggregation edge router is a routing peer of other edge routers (PE) in its own autonomous system. The Multi-Protocol Label Switching (MPLS) network is used between the different autonomous systems. | 2008-10-30 |
20080267188 | Data Transmission Method - A method of transmitting data between a plurality of inter-connected elements. The method comprises receiving a message from a first element, said message comprising a routing key plus optionally a data payload. The routing key is processed to identify a plurality of said inter-connected elements, and data is transmitted to said identified plurality of inter-connected elements. | 2008-10-30 |
20080267189 | METHOD AND SYSTEM FOR VERIFYING UPDATE INFORMATION IN BGP - A method for verifying update information in Border Gateway Protocol (BGP), includes: upon receipt of an update message, verifying, by an Autonomous System (AS), the update message according to a determined maximum time of verifications; and trusting the update message if the verifications are successful. The update message may be AS_PATH and/or prefix. In the invention, upon receipt of an update message, the AS verifies the update information according to the maximum time of verifications, which ensures that the time of verifications will not exceed the maximum time of verifications when the AS verifies the update information. Accordingly, load on CPU is decreased during verification of the update information and hence the network convergence speed is improved. | 2008-10-30 |
20080267190 | Method of, and System for, Communicating Data, and a Station for Transmitting Data - Data is transmitted from a first station ( | 2008-10-30 |
20080267191 | Apparatus and method for multiple stage media communications - A method and system for multi-stage media communications a means for transmitting and receiving media messages via a two-stage communications protocol and a means for relaying the media messages via the two-stage communications protocol to one or more additional means for transmitting and receiving. The two-stage communications protocol includes a first RF-based stage and a second IP-based stage. The second IP-based stage uses SIP for establishing media communications between the means for transmitting and receiving media messages. Preferably, the system includes one or more wireless handheld devices for sending and receiving media and a base station device for relaying such media. Additional base stations can be added (via an IP network) to increase communications range without complex networking infrastructure. | 2008-10-30 |
20080267192 | SYSTEMS AND METHODS FOR MONITORING HIGH SPEED NETWORK TRAFFIC VIA SEQUENTIALLY MULTIPLEXED DATA STREAMS - Systems and methods for monitoring high-speed network traffic via sequentially multiplexed data streams. Exemplary embodiments include a switch module system, including a first switch module configured to be coupled to a first, server chassis, a first data port disposed on the first switch module and a set of first port data links configured to be coupled to a set of data port data links, each data link configurable to channel at least one of a normal data stream and a monitored data stream. | 2008-10-30 |
20080267193 | TECHNIQUE FOR ENABLING NETWORK STATISTICS ON SOFTWARE PARTITIONS - A computer implemented method, data processing system, and computer program product for enabling network statistics to be collected per software partition. When an incoming data packet is received at the Internet Protocol (IP) layer of an operating system, the IP address in the incoming data packet is identified. The IP address in the incoming data packet is then compared against IP addresses stored in a hash table, wherein the hash table maps each IP address in the hash table to a software partition of the operating system. If an IP address in the hash table matches the IP address in the data packet, the software partition mapped to the located IP address in the hash table is identified. Network statistics collected for the incoming data packet are then associated with the software partition. | 2008-10-30 |
20080267194 | Method and Apparatus for Communicating Loss of Alternating Current Power Supply - In general, various methods, apparatuses, and systems are described for communicating a loss of an AC power source. In at least certain embodiments, a broadband communication gateway receives a direct current (DC) output signal from an alternating current (AC) to DC converter that detects a loss of an AC input signal. The apparatus further includes a processing unit that generates a communication message in response to receiving an interrupt signal based on the detection of the loss of the AC input signal. The processing unit controls an analog front end that sends the communication message to a device external to the broadband communication gateway in response to the interrupt signal prior to a voltage of the DC output signal decreasing below a threshold voltage needed for operation of the broadband communication gateway. | 2008-10-30 |
20080267195 | Network Systems and Methods for Providing Guest Access - The present disclosure generally pertains to routers for providing guest access to networks. An integrated router in one exemplary embodiment comprises at least one local area network (LAN) interface, memory, and routing logic. The memory is configured to store security data. The routing logic is configured to enable a first LAN and to authenticate a user for accessing the first LAN based on the security data. The routing logic is configured to enable a second LAN in response to user input and to automatically disable the second LAN upon expiration of a specified time period. The routing logic is further configured to route messages communicated between a device of the second LAN and a wide area network (WAN) and to route messages through the first LAN. | 2008-10-30 |
20080267196 | Adaptive Bandwidth Management System For Capacitor Tunnels Of A Time-Variable Communication Matrix - In one aspect, a communications network, wherein capacitor tunnels for particular services, for example for a quality of service are arranged on the link paths between the network nodes is provided. For preventing the capacity blocking or underused, the tunnel capacities are adapted according to a time-variable communication matrix. In a particular embodiment, a stock of transmission capacity common for a number of link paths is maintained, wherein a capacitor tunnel takes the data transmission capacity from the stock, when a top traffic threshold is exceeded or returns the data transmission capacity in the stock when the lower traffic threshold is under permissible level, respectively. | 2008-10-30 |
20080267197 | Circuit Assembly and Data Transmission Method - A circuit assembly and an associated method are provided, which allow a user to autonomously influence the quality of the data that is to be transmitted, especially language data that is to be transmitted via the IP network, by controllingly addressing an adjusting unit via an evaluator and signalor when a selected coder-decoder is to be used. | 2008-10-30 |
20080267198 | Support of C-tagged service interface in an IEEE 802.1ah bridge - In one embodiment, a Provider Backbone Edge Bridge (BEB) IEEE 802.1ah compliant apparatus includes a B-component having one or more provider backbone ports, and a first I-component coupled with the B-component, the first I-component being configured to support a S-tagged interface. A second I-component is also coupled with the B-component, the second I-component being configured to support a C-tagged interface, thereby facilitating direct connection to a device operating in compliance with IEEE 802.1Q specification. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. | 2008-10-30 |
20080267199 | Roaming Gateway - A gateway ( | 2008-10-30 |
20080267200 | Network Router Based on Combinatorial Designs - A router architecture based on combinatorial design. The router includes a plurality of input channels; a plurality of processors; a plurality of output channels; and buses interconnecting the input channels, processors, and output channels in a manner such that each pair of channels exists in only a pre-selected number of processor (pairwise balance property) and subsets of output channels, connected to processing elements. covers entire set of output channels (full covering property). | 2008-10-30 |
20080267201 | SYSTEM AND METHOD FOR MANAGING DYNAMIC NETWORK SESSIONS - For an Internet Access Gateway operative between an area network and a public network, managing dynamic network sessions therebetween whereby a primary server on the public network in a primary session with a client of the area network initiates an additional session with an additional server on the public network, for which an unexpected data packet received at the gateway from the additional server is associated with the primary session, and accordingly allowed access to the area network through the gateway, provided the gateway received the data packet at an input port exceeding 1023, the additional session comprises a pre-defined Session Triggering Event, and at least one internal network component of the area network indicates willingness to receive the data packet. Wherefore, a preferred Application Level Gateway is thereby provided for firewall and NAT implementations to enhance network security. | 2008-10-30 |
20080267202 | MEDIA GATEWAY AND METHOD FOR REPORTING TERMINATION STATISTIC PARAMETER VALUE - A media gateway (MG) and method for reporting the termination statistic parameter value, the media gateway controller (MGC) may obtain the statistic parameter value of the termination in real-time with the little performance expense in the frame of media gateway control protocol. The present invention extends one event whose parameters contain the statistic parameter identifier using the event mechanism of media gateway control protocol, reporting the current value of the corresponding statistic parameter according to the statistic parameter identifier in the parameters when the event is triggered. Various optional trigger conditions may be set in the event parameters, including the duration for reporting, the period for reporting, the specific statistic exceeding certain extremum etc. as well as any combination thereof. While the statistic parameter in the event parameters is reported, maintains the statistic parameter value to prevent from reporting affect, or resets the statistic parameter value. | 2008-10-30 |
20080267203 | DYNAMIC MEMORY QUEUE DEPTH ALGORITHM - A method of modifying a priority queue configuration of a network switch is described. The method comprises configuring a priority queue configuration, monitoring a network parameter, and adjusting the priority queue configuration based on the monitored network parameter. | 2008-10-30 |
20080267204 | Compact Load Balanced Switching Structures for Packet Based Communication Networks - A switching node is disclosed for the routing of packetized data employing a multi-stage packet based routing fabric combined with a plurality of memory switches employing memory queues. The switching node allowing reduced throughput delays, dynamic provisioning of bandwidth and packet prioritization. | 2008-10-30 |
20080267205 | Traffic management device and method thereof - A traffic management device and the method thereof are disclosed. The traffic management device includes a control logic unit, a first counting unit, and a second counting unit. The traffic management method follows the dual leaky bucket mechanism. A first count value and a second count value are generated by the first counting unit and the second counting unit, respectively, such that the control logic unit controls the average rate by checking whether the first count value falls within the range of a first threshold and controls the peak rate by checking whether the second count value falls within the range of a second threshold. When both the conditions are satisfied, packets in the queue are transmitted. Thus, the network flow is controlled effectively. | 2008-10-30 |
20080267206 | CAM BASED SYSTEM AND METHOD FOR RE-SEQUENCING DATA PACKETS - An embodiment of the system operates in a parallel packet switch architecture having at least one egress adapter arranged to receive data packets issued from a plurality of ingress adapters and switched through a plurality of independent switching planes. Each received data packet belongs to one sequence of data packets among a plurality of sequences where the data packets are numbered with a packet sequence number (PSN) assigned according to at least a priority level of the data packet. Each data packet received by the at least one egress adapter has a source identifier to identify the ingress adapter from which it is issued. The system for restoring the sequences of the received data packets operates within the egress adapter and comprises buffer for temporarily storing each received data packet at an allocated packet buffer location, a controller, and a determination means coupled to a storing means and extracting means. | 2008-10-30 |
20080267207 | CONTEXT-SENSITIVE, SELF-ADJUSTING TARGETING MODELS - In an embodiment, new traffic pattern data is received pertaining to a first time period having a first time increment. The traffic pattern data may be received as, or converted to, count information reflecting the probabilities that the user will select particular links services. An incremental table is accessed to determine stale traffic pattern count data, which is the traffic pattern count data in the incremental table over a second time period having the first time increment, wherein the second time period covers the oldest traffic pattern count data in the incremental table. Then a count table is updated to reflect removal of the stale traffic pattern count data, wherein the count table contains global count data at a higher level of granularity than the incremental table. The incremental table and count table are updated to reflect addition of the new traffic pattern data. | 2008-10-30 |
20080267208 | System and method for reliable store-and-forward data handling by encoded information reading terminals - A data collection system for, and methods of, providing reliable store-and-forward data handling by encoded information reading terminals can utilize ad-hoc peer-to-peer (i.e., terminal-to-terminal) connections in order to store data that is normally stored on a single terminal only, in a redundant manner on two or more terminals. Each portable encoded information reading terminal can be configured so that when it captures data, a software application causes the terminal to search out nearby peer terminals that can store and/or forward the data to other peer terminals or to a data collection server, resulting in the data having been stored by one or more peer terminals that are immediately or not immediately accessible by the data-originating terminal. | 2008-10-30 |
20080267209 | SYSTEM AND METHOD FOR STORE AND FORWARD ROUTING FOR DISTRIBUTED DESTINATIONS - The present invention enables a store-and-forward service providing an efficient and reliable forwarding of messages stored in a message queue to a distributed destination. It provides customers with high availability and scalability for applications such as JMS queues and topics. It achieves load balancing and failover amongst all individual members of the distributed destination while ensuring that each message is delivered exactly once. | 2008-10-30 |
20080267210 | Media channel switching - The present invention discloses methods and systems for switching between media channels. Pursuant to these methods and systems, a broadcast source may provide multicast streams to client devices for presentation of media channels to a user. When a client device requests to switch channels, a client device that is receiving the requested channel initially transmits a unicast stream for the requested channel to the client device switching channels. The requesting client device upon receipt of this unicast stream may then provide the corresponding channel to the user. | 2008-10-30 |
20080267211 | Integrated Circuit and Method for Time Slot Allocation - An integrated circuit comprising a plurality of processing modules (M, S; IP) and a network (N) arranged for coupling said modules (M, S; IP) is provided. Said integrated circuit further comprises a plurality of network interfaces (NI) each being coupled between one of said processing modules (M, S; IP) and said network (N). Said network (N) comprises a plurality of routers (R) coupled via network links (L) to adjacent routers (R). Said processing modules (M, S; IP) communicate between each other over connections using connection paths (C | 2008-10-30 |
20080267212 | Isolated Ethernet Physical Layer (PHY) - A network device comprises an Ethernet physical layer (PHY) comprising an isolation, protection, and electromagnetic interference suppression barrier operative for isolated power and data transfer. | 2008-10-30 |
20080267213 | Client-Side Bandwidth Allocation for Continuous and Discrete Media - The embodiments of the invention relate to client-side bandwidth allocation or rate-lowering processes, systems, and devices. In general, a received continuous stream is received at a lower rate while a discrete media stream is also being received by the client, and having the received continuous stream be received at a previous higher rate when the client is no longer receiving the discrete media stream. | 2008-10-30 |
20080267214 | Universal datagram protocol (UDP) port based broadcast filtering - A new and unique method or apparatus for power savings in a node, point, terminal or device in a wireless communications technology, such as a wireless local area network (WLAN), Worldwide Interoperability for Microwave Access Forum (WiMAX), Ultra wide band (UWB), or other suitable network, featuring receiving in a radio modem chipset information indicating that a host processor wants the radio modem chipset to filter out unwanted data packets; and filtering one or more unwanted data packets in the radio modem chipset without passing them to the host processor based on the information received for providing power savings in a node, point, terminal or device that forms part of a wireless communications technology, including a wireless local area network or other suitable network. | 2008-10-30 |
20080267215 | System and method of identifying a location associated with a source of a data communication problem - In a particular illustrative embodiment, a method is disclosed that includes receiving data at a central server system from multiple customer premises equipment (CPE) devices. The CPE devices are located at subscriber premises remote from one another. The method further includes associating the received data from geographically-related CPE devices and comparing the associated data to determine a problem related to one or more of the geographically-related CPE devices. | 2008-10-30 |
20080267216 | Method and System for Transmitting a Multimedia Data Stream - Method of transmitting a multimedia data stream (F) from at least one sender to at least one receiver through a link including a communication network ( | 2008-10-30 |
20080267217 | Compression of data packets while maintaining endpoint-to-endpoint authentication - Contiguous data packets of a single communication session between endpoints are gathered for compression, and at least the payloads are compressed collectively via a single compressible buffer. The original headers, which may or may not be compressed, and the compressed payloads are transmitted from a sending packet compression device to a receiving packet compression device that performs decompression to the compressed payload and may also decompress headers if they have been compressed at the sending end. The original contiguous data packets including headers and payload may be reconstructed at the receiving packet compression device by matching the headers to the corresponding payloads. The reconstructed data packets are injected back into the single communication session, and the presence of the original headers in the reconstructed data packets may thereby maintain the endpoint-to-endpoint authentication protocols. | 2008-10-30 |
20080267218 | Media proxy for providing compressed files to mobile devices - Architecture for providing a compressed replacement media file to a mobile device is provided. The method comprises receiving a first media file of a first format. The first media file is then compressed to generate a second media file of a second format. A request may be received from a mobile device for the first media file and the second media file is transferred to the mobile device via the Internet. Content may be added to the first media file such that the second media file comprises both the added content and the first media file. An indication that the second media file has been played on the f media device may be received. | 2008-10-30 |
20080267219 | Enhanced Dynamic Compression - The present invention is directed towards compressing and decompressing data transmitted between an end terminal ( | 2008-10-30 |
20080267220 | Method of Iterative Signal Processing For Cdma Interference Cancellation and Ising Perceptrons - A method of processing a signal to infer a information encoded in the signal, measuring characteristics of the signal, making an estimate of the information from measured signal characteristics, using an expanded set of information, the expanded set of information being correlated to the measured signal characteristics, determining an update rule and applying the update rule to the expanded set of information to generate an inferred set of information representative of that encoded in the signal. The method may be used in many applications, for example inferring information in CDMA signals, learning in an Ising perceptron and lossy compression. | 2008-10-30 |
20080267221 | Data Sharing and Synchronization with Relay - Systems and methods for sharing and synchronizing data using the addition of synchronization data to a feed that contains data items, and in some implementations, at least a node or endpoint that provides relay functionality or relay capabilities to one or more endpoints, are disclosed. Such systems and methods may also include the communication of information about the data that is synchronized, in addition to synchronization of the data itself. | 2008-10-30 |
20080267222 | System for combining a plurality of video streams and method for use therewith - A system for combining a plurality of video streams includes a time stamp adjustment module that generates an adjusted second video stream by adjusting a plurality of time stamps of a second video stream. A video stream concatenation module generates a combined video stream by concatenating the adjusted second video stream to an end of a first video stream. | 2008-10-30 |
20080267223 | Systems and methods for mapping and multiplexing wider clock tolerance signals in optical transport network transponders and multiplexers - The present invention provides systems and methods for mapping and multiplexing wider clock tolerance signals in Optical Transport Network (OTN) transponders and multiplexers. In one exemplary embodiment, the present invention allows wide tolerance signals, such as a 10 GbE with a ±100 PPM clock tolerance, to be 100% transparently mapped asynchronously into OTU2-LAN rate transport signals. In another exemplary embodiment, the present invention allows wide tolerance signals, such as a 10 GbE with a ±100 PPM clock tolerance, to be 100% transparently multiplexed asynchronously in to OTU3-LAN rate transport signals. The present invention utilizes extra Negative Justification Opportunities (NJO) in either unused OPUk overhead or in OPUk payload area and Positive Justification Opportunities (PJO) in OPUk payload area. Advantageously, the extra NJO and PJO provide additional bandwidth for client data rate offsets beyond OTN specifications. | 2008-10-30 |
20080267224 | METHOD AND APPARATUS FOR MODIFYING PLAYBACK TIMING OF TALKSPURTS WITHIN A SENTENCE WITHOUT AFFECTING INTELLIGIBILITY - Adaptive De-Jitter Buffer for Voice over IP (VoIP) for packet switched communications. The de-jitter buffer methods and apparatus presented modify the playback of packets dependent upon whether silence periods are detected inter-sentence or intra-sentence to optimize voice quality in a communication system. In one example, a de-jitter buffer determines the length of at least one silence period associated with a plurality of received packets and determines a time to transmit a portion of the packets based on the determined length of the silence period. In another example, a silence characterizer unit performs this function. | 2008-10-30 |
20080267225 | Hybrid High-Speed/Low-Speed Output Latch in 10 GBPS Interface with Half Rate Clock - A high-speed serial demultiplexer receives over four high-speed serial data lines at a nominal rate of 10 GBPS and demultiplexes the data to 16 lines with a rate of 2.5 GHz each. The demultiplexer circuits are configured as two D type latches, one of which latches data on the positive edge of a 5 GHz clock, the other of which latches every other bit of the 10 GBPS data on the negative edge of the 5 GHz clock, alternating with the first D latch. Each of the two D latches is configured as a master-slave flip-flop that includes a master D latch and a slave D latch. The master receives the data at the 10 GBPS rate and clocks every other bit to its output using an edge of the 5 GHz clock (the positive edge for one of the D-latches, the negative for the other). The slave clocks the data form the master to its output on the opposite edge of the clock following the master. | 2008-10-30 |
20080267226 | Broadband fiber laser - A broadband fiber laser provides a lasing cavity including a reflective mirror and at least one fiber Bragg grating for further providing a lasing signal to resonate and be amplified therein. Alternatively, the wavelength of the fiber laser can be either fixed or tunable by varying the central wavelength of the fiber Bragg grating and/or by adjusting the switching status of an optical switch pair. | 2008-10-30 |
20080267227 | Gain-clamped optical amplifier using double-clad fiber - Provided is a gain-clamped optical amplifier amplifying light without bandwidth loss of an incident optical signal, and the gain-clamped optical amplifier using a double-clad fiber comprises: an optical fiber including a core doped with a gain material for amplifying an optical signal, a primary clad adjacent to the outside of the core and having a lower refractive index than the core, and a secondary clad adjacent to the outside of the primary clad and having a lower refractive index than the primary clad; a light emitting element emitting a pump light for population inversion of the gain material; and a cavity unit producing laser oscillation by resonating spontaneous emission light emitted from the gain material population-inverted by the pump light. | 2008-10-30 |
20080267228 | Fiber Lasers - Fiber lasers for producing Band I wavelengths include a laser cavity having an optical fiber with specific parameters in length and thickness and doping concentration, and having high reflectivities. Examples show the feasibility of producing such fiber lasers. Fiber lasers for producing Band IV wavelengths include a depolarized laser oscillator, at least one amplifier and a polarizer. Depolarized laser oscillator is an inherently depolarized CW laser, or a depolarized laser diode, which is depolarized by a depolarizer. Additional fiber lasers in accordance with embodiments of the present invention include a double clad active optical fiber having a pump power entry point for sending pump energy through the active optical fiber in a first direction, and a loop portion at a second end of the fiber for sending pump energy through the active optical fiber in a second direction which is opposite to the first direction. A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second double clad fiber, and a bulk optic component positioned between the first and second fibers. A mode stripper included within the second fiber allows for removal of high power light which is propagated through the outer clad rather than launched into the core of the second fiber. | 2008-10-30 |
20080267229 | Optical fiber, optical fiber production method and optical fiber production system - An optical fiber includes a rare-earth element-added core for serving as a gain medium, and a cladding formed on a periphery of the core. Pump light propagated through the cladding is coupled into the core. The cladding is in an undulation shape in the longitudinal direction of the cladding. The undulation shape of the cladding is formed according to a grating period at which the pump light is totally reflected and propagated in the cladding. The core includes an undulation shape in a longitudinal direction of the core. The cladding includes an undulating inner cladding, and an outer cladding provided on a periphery of the inner cladding. The core and/or the cladding is circular or abnormally circular in its transverse cross section. | 2008-10-30 |
20080267230 | Device For Wide Range Continuous Wavelength Sweeping on a Set of Tunable Laser Sources - A device for wide range continuous wavelength sweeping on a set of tunable laser sources over a predetermined global wavelength range, the device working with at least one functional pair of cooperating tunable lasers, each laser of the cooperating pair emitting over a sub range of the global wavelength range, the sub ranges of a functional pair partly overlapping each other in an overlapping wavelength zone, all the sub ranges being included within the global wavelength range and the sweeping of the output laser signal being done by the selection and tuning of one of the lasers of one of the functional pairs at a time. The device includes for a functional pair of cooperating tunable lasers an optical switch and an heterodyne optical detector. | 2008-10-30 |
20080267231 | DETUNED DUO-CAVITY LASER-MODULATOR DEVICE AND METHOD WITH DETUNING SELECTED TO MINIMIZE CHANGE IN REFLECTIVITY - A detuned duo-cavity laser-modulator device and method are provided which include lower, middle and upper reflectors, a gain region and an absorber region integrated into a semiconductor die. The middle reflector is disposed between the lower and upper reflectors. Together, the lower and middle reflectors define a first resonant cavity, while the upper and middle reflectors define a second resonant cavity. A gain region is disposed within a laser cavity of the resonant cavities to generate an optical carrier wave, while an absorber region is disposed within a modulator cavity of the resonant cavities to modulate a signal on the optical carrier wave. The laser and modulator cavities are detuned resonant cavities, with the detuning of the laser and modulator cavities being selected to minimized change in reflection from the modulator cavity to the laser cavity when the absorber region modulates the signal on the optical carrier wave. | 2008-10-30 |
20080267232 | Micro-Structured Optic Apparatus - A micro-structured optics apparatus includes a concave microlens to expand a beam of light, a reflector to provide a first reflection of at least a portion of the beam of light and a micro-Fresnel lens to collimate the at least a portion of the beam of light after the expansion. | 2008-10-30 |
20080267233 | RESISTIVE HEATING ELEMENT FOR ENABLING LASER OPERATION - Heating resistor used to control laser operation. A laser package, such as a Transmitter Optical Subassembly (TOSA) includes a substrate. A laser is disposed on the substrate. A resistive heating element is disposed on the substrate with the laser. Control circuitry is connected to the resistive heating element. The control circuitry is configured to cause current flow through the resistive heating element based on temperature conditions. Current flow through the resistive heating element causes an increase in the operating temperature of the laser. This can be used to increase the effective operating temperature range of a laser. | 2008-10-30 |
20080267234 | APPARATUS FOR DISSIPATING HEAT IN ELECTRO-OPTICAL COMMUNICATIONS SYSTEMS - A laser mounted in a casing is driven by and mounted close to its driving circuit. To reduce the effect on the laser of heat generated by the driver circuit, the casing includes a passive heat sink element on which the driver circuit is mounted whereby heat generated by the driver is dissipated by the passive heat sink element. | 2008-10-30 |
20080267235 | Laser | 2008-10-30 |
20080267236 | Laser diode with a grating layer - A laser diode is provided comprising a multiple quantum well structure, a current concentrating layer having an oxide-confined aperture, a grating layer having an index of refraction, and a transparent electrode, wherein the transparent electrode has an index of refraction less than the index of refraction of the grating layer. | 2008-10-30 |
20080267237 | Monolithically-Pumped Erbium-Doped Waveguide Amplifiers and Lasers - Disclosed is a method of doping an oxide. The example method includes forming at least one of an AlGaAs oxide or an InAlP oxide on a GaAs substrate, and incorporating Erbium into the at least one AlGaAs oxide or InAlP oxide via ion implantation to form an Erbium-doped oxide layer. The example method also includes annealing the substrate and the at least one AlGaAs oxide or InAlP oxide. | 2008-10-30 |
20080267238 | SEMICONDUCTOR LASER DIODE ELEMENT AND METHOD OF MANUFACTURING THE SAME - A semiconductor laser diode element includes a semiconductor laser diode portion including a ridge portion extending in a first direction in which a cavity extends, a groove formed along the ridge portion and a support portion formed along the groove on a side farther from the ridge portion and holding the groove between the support portion and the ridge portion and a support substrate bonded to the semiconductor laser diode portion through a fusion layer, wherein the fusion layer is formed so as to be embedded in the groove, a space from the ridge portion to the support substrate and a space from the support portion to the support substrate. | 2008-10-30 |
20080267239 | High-Index-Contrast Waveguide - Disclosed is an example method to reduce waveguide scattering loss. The method includes forming a waveguide having a sidewall, the waveguide including a group III-V compound semiconductor material, and growing a native oxide on the waveguide to form an index of refraction contrast at the sidewall, the native oxide grown in a controlled Oxygen-enriched water vapor environment to reduce a roughness of the sidewall. | 2008-10-30 |
20080267240 | OPTICAL SEMICONDUCTOR MODULE - An optical semiconductor module including a base having installed on an optical fiber and an optical semiconductor element, and a package which houses the base on a bottom thereof and has a first side wall with an optical section through which the optical fiber is led and a second side wall facing the first side wall, where the base is cut off to form a curved surface with respect to the bottom at a lower corner on a side of the base facing the second side wall of the housing, and a ratio of r/t is from 0.4 to 1.0, where t is a thickness of the base, and r is a curvature radius of the curved surface. | 2008-10-30 |