NORTEL NETWORKS LIMITED Patent applications |
Patent application number | Title | Published |
20120227101 | Method for providing media communication across firewalls - The present invention supports a method for transmitting information packets across network firewalls. A trusted entity is provisioned with an address designation for a pinhole through the firewall during setup of a communication session between two communication devices. This pinhole address is used throughout the communication session between the two communication devices to transmit information packets onto and out of the communication network. | 09-06-2012 |
20120225686 | Push-to-talk optimization - A push to talk message protocol operating on a communication network between an originating and terminating communication device operates to transmit compressed message formats to initiate the push to talk message protocol. Four compressed session protocol message formats are used in the preferred embodiment. A compressed originating session initiation invite message is transmitted from the originating mobile station. A compressed terminating session initiation invite message is received by the terminating mobile station. A compressed session initiation protocol ping message is transmitted from the originating mobile station and received by the terminating mobile station. A compressed 200 OK session initiation protocol message is transmitted from the terminating mobile station and received by the originating mobile station. Finally, the originating mobile decompresses the 200 OK session initiation protocol message. These compressed messages are used to initiate the push to talk communication session. | 09-06-2012 |
20120208533 | Negotiating different mobile IP delivery styles - The present invention provides a system and method to selectively negotiate different delivery styles for different types of packets sent from the Mobile Node to the Foreign Agent, which will allow the Mobile Node to negotiate a delivery style that will permit the Foreign Agent to transmit certain selected outbound traffic directly without reverse tunneling that traffic back to the home network. Specifically, the present invention allows the Foreign Agent to distinguish between certain types of BC/MC packets that are designated to be processed and routed to their destinations by the Foreign Network directly, as opposed to reverse tunneling the outbound traffic from the Foreign Agent back to the Home Agent on the home network. By selecting processing by the Foreign Network, the efficiency of the system will improve because the transmission of outbound traffic and inbound responses will not need to be tunneled through the Home Network. | 08-16-2012 |
20120207116 | WIMAX R6 MANAGEMENT PROTOCOL - Within an access services network (ASN) operable for providing wireless access services to an access terminal and including a base station communicatively coupled to an ASN gateway, a new management protocol is provided for managing the R | 08-16-2012 |
20120201222 | SYSTEM AND PROTOCOLS FOR INTER-MOBILITY ACCESS GATEWAY TUNNELING FOR FAST HANDOFF TRANSITION - A system and method for transitioning connectivity of a mobile node between mobility access gateways on a communication system using an inter-MAG tunneling protocols for a fast handoff. The protocols can use pre-configured or dynamic protocols on the IP-Layer or another layer on the protocol stack. In a hi-directional tunneling mechanism, the protocol and system supports the transfer of the mobility session context information for the mobile node to the next MAG in advance of the fast handoff to avoid delays and an inter-serving gateway bidirectional tunneling mechanism to allow forwarding of the mobility session traffic between new serving gateway and the prior serving gateway without ambiguity. | 08-09-2012 |
20120195284 | JOINT UPLINK DATA PROCESSING BY PLURAL BASE STATIONS - Joint uplink processing by plural base stations includes sending, by a serving base station, a request for uplink resources of a second base station for receiving uplink data of a mobile station. The serving base station receives first uplink data from the mobile station, and the serving base station further receives (from the second base station) second uplink data of the mobile station received by the second base station using the uplink resources specified by the request. | 08-02-2012 |
20120195266 | Mobile IP over VPN Communication Protocol - The present invention supports a communication protocol for transmission of information packets between a mobile node and a virtual private network. Information packets are encapsulated and decapsulated along the route as the information packet is forwarded among the various networks on its path to the destination address; either the mobile node on a foreign network or a correspondence node on a virtual private network. A home agent on the virtual private network supports transmitting the information packets, and the information packets are transmitted from the virtual private network from the home agent or a virtual private network gateway. | 08-02-2012 |
20120184294 | OPTIMIZING A SERVING GATEWAY LOCATION IN A HOME EVOLVED NODE B WITH LOCAL IP ACCESS - A system and method are provided for enabling a mobile device to establish a local IP access on a packet data network connection on a femto cellular access network. A local server gateway and a macro server gateway are coupled to the femto cellular access network. A mobility management entity is coupled to the femto cellular access network, the local server gateway and the macro server gateway. The mobility management entity obtains a status mode of the mobile device and a location of the mobile device transmitted on the femto cellular access network. The mobility management entity selects one of the local server gateway and the macro server gateway based on the status mode of the mobile device and the location of the mobile device. | 07-19-2012 |
20120180130 | METHOD FOR DEFENDING AGAINST DENIAL-OF-SERVICE ATTACK ON THE IPV6 NEIGHBOR CACHE - A method of defending against a denial-of-service (DoS) attack on an IPv6 neighbor cache includes steps of determining a number of neighbor cache entries currently stored in the neighbor cache and then determining whether the number of entries exceeds a neighbor cache threshold that is less than a neighbor cache limit defining a maximum capacity of the neighbor cache. When the number of entries in the neighbor cache exceeds the neighbor cache threshold, stateless neighbor resolution is triggered. Stateless neighbor resolution entails sending a neighbor solicitation to resolve an address for an incoming packet without logging a corresponding entry in the neighbor cache. Additional techniques that complement the above method involve purging of neighbor cache entries designated as incomplete, prioritization of the entries based on trustworthiness, shortening the incomplete-status timer to less than 3 seconds, and curtailing the number of retransmissions of the neighbor solicitations. | 07-12-2012 |
20120163301 | RECEIVING INFORMATION RELATION RADIO ACCESS TECHNOLOGY CAPABILITIES OF A MOBILE STATION - A base station sends a request for information relating to radio access technology capabilities of a mobile station. The base station receives a message containing information relating to radio access technology capabilities of the mobile station, where the message is responsive to the request, and the information contained in the message specifies that the mobile station supports at least two different types of radio access technologies useable by the mobile station to communicate over a wireless link between the base station and the mobile station. The base station is able to control which of the at least two different types of radio access technologies the mobile station is to use. | 06-28-2012 |
20120163282 | Relay Techniques Suitable for User Equipment in Downlink - The present invention provides a solution to improve coverage and cell edge performance in a mobile user communication system is the use of fixed relays, which are pieces of infrastructure without a wired backhaul connection. The relays transmit or “relay” downlink messages between the base station (BS) and mobile stations (MSs) through a multi-hop communication. The present invention is a method and system for supporting a multiple user mobile broadband communication network that includes relay techniques suitable for user equipment in the downlink communication to the user equipment. | 06-28-2012 |
20120151212 | Securing home agent to mobile node communication with HA-MN key - The invention is a new protocol for securing the communication link between the Home Agent and the Mobile Node. A cipher key and an integrity key are generated at a home AAA server and are also generated independently at the Mobile Node. The two keys generated at the home AAA server are transmitted to the Home Agent to secure information packets transmitted between the Mobile Node and the Home Agent. The cipher key and integrity key are used to establish a security association used for information packet transmissions. The cipher key is used to encrypt the information packets, and the integrity key is used to ensure that the contents of the encrypted message are not altered. | 06-14-2012 |
20120147806 | Data over signaling (DOS) optimization over wireless access networks - The present invention supports a communication protocol on a wireless communication network to transmit application data on the control channel to an access terminal. Base transceiver stations are grouped and configured into paging zones. The radio network controller transmits a page message and application data to the base transceiver stations in the paging zone where the access terminal is located. Each of the base transceiver stations transmits a page and buffers the application data. The buffered application data is only transmitted by the base transceiver station receiving a response to the page. | 06-14-2012 |
20120140682 | Dual Mode Base Station - A base station including at least a transceiver switch is provided enabling the base station to transmit and receive data in either FDD or TDD mode from an antenna. The base station may be provided with a synthesiser which can be retuned from FDD to TDD mode or alternatively, an FDD and a TDD synthesiser and a switch enabling the transmitter and receiver of the base station to process FDD or TDD mode data respectively. | 06-07-2012 |
20120129526 | SESSION SUSPEND AND RESUME USING A TRANSIENT BINDING OPTION MESSAGING - The present invention uses a message with a suspend/resume flag setting sent to the local mobility anchor from the foreign agent that was supporting downlink transmissions to the mobile node. Namely, a transient binding option is proposed for creating a transient BCE state at the home agent/local mobility anchor during an inter-MAG handover, which will suspend down-link traffic from the home agent/local mobility anchor until the transient BCE (suspend) state is cleared by the foreign agent previ-ously supporting downlink transmissions. After the transient BCE (suspend) state is cleared, the downlink traffic from the home agent/local mobility anchor can resume with forwarding of downlink traffic to the mobile node through the foreign agent. The present invention can be implemented using a new protocol application or modified messages from prior registration applications. | 05-24-2012 |
20120115470 | SELECTING FROM AMONG PLURAL CHANNEL ESTIMATION TECHNIQUES - A wireless receiver receives reference signals over a wireless link. The wireless receiver calculates a selection indication based on the received reference signals, and the wireless receiver selects from among plural channel estimation techniques based on the selection indication, where the selected channel estimation technique is usable to perform channel estimation of the wireless link. | 05-10-2012 |
20120108182 | RECEIVING A MESSAGE IDENTIFYING NEIGHBOR CELLS - While a mobile station is in a reduced power state, the mobile station determines whether the mobile station has up-to-date neighbor cell information. In response to determining that the mobile station does not have up-to-date neighbor cell information, the mobile station transitions from the reduced power state to a higher power state, so that the mobile station can receive a message identifying neighbor cells. | 05-03-2012 |
20120087394 | METHODS AND SYSTEMS FOR OFDM USING CODE DIVISION MULTIPLEXING - In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions. | 04-12-2012 |
20120087240 | METHOD AND ARCHITECTURE FOR A SCALABLE APPLICATION AND SECURITY SWITCH USING MULTI-LEVEL LOAD BALANCING - A switch architecture and method provides scaling through multi-level load balancing of flows across data and application processing planes. An input/output module receives a communication session flow (forward) from a client device and selects one of a plurality of data processors to process the flow. The selected data processor determines the level of processing for the forward flow and selects an application processor from a plurality of such application processors. The application processor generates a session structure identifying actions to be performed on the forward flow and transfers the session structure to the selected data processor to perform the actions on the forward flow. The application processor also predictively generates and offloads a session structure for the associated reverse flow. If the reverse session structure is offloaded to a different data processor, either the forward or reverse flow redirects packets, or is redirected, to the data processor hosting the other flow. | 04-12-2012 |
20120082188 | MULTIPLE REDUNDANT GNSS SYNCHRONIZATION SYSTEM - Methods and apparatus are provided for multiple redundant global navigation satellite system GNSS synchronization of a plurality of base stations via a system node that is in communication with the plurality of base stations. At the system node, time information is provided to and received from the plurality of base stations and a system time reference is generated based on at least some of the time information, such that the system time reference is synchronized with an external time epoch reference provided by the GNSS. If a base station is unable to receive the GNSS service, the system node provides time synchronization information to the base station to synchronize the base station with the system time reference, which itself is synchronized to the external time epoch reference provided by the GNSS service. | 04-05-2012 |
20120076228 | Adaptive Time Diversity and Spatial Diversity for OFDM - An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix. | 03-29-2012 |
20120076029 | METHOD AND APPARATUS FOR PROVIDING AVAILABILITY METRICS FOR MEASUREMENT AND MANAGMENT OF ETHERNET SERVICES - Maintenance entities may be defined between customer and provider flow points to allow performance management to take place on an Ethernet network. The maintenance entities may be defined for access link, intra-domain, and inter-domain, and may be defined on a link or service basis. Performance parameters, including availability metrics, may be collected for the maintenance entities. The provision of such availability metrics in an Ethernet based solution to facilitate consistency of service management and operations for carriers transitioning to the Ethernet solution. | 03-29-2012 |
20120066491 | HITLESS MANUAL CRYPTOGRAPHIC KEY REFRESH IN SECURE PACKET NETWORKS - In a hitless manual cryptographic key refresh scheme, a state machine is independently maintained at each network node. The state machine includes a first state, a second state, and a third state. In the first state, which is the steady state, a current cryptographic key is used both for generating signatures for outgoing packets and for authenticating signatures of incoming packets. In the second state, which is entered when a new cryptographic key is provisioned, the old (i.e. formerly current) key is still used for generating signatures for outgoing packets, however one or, if necessary, both of the old key and the newly provisioned key is used for authenticating signatures of incoming packets. In the third state, the new key is used for generating signatures for outgoing packets and either one or both of the old key and new key are used for authenticating signatures of incoming packets. | 03-15-2012 |
20120064936 | UPLINK POWER CONTROL WITH INTERFERENCE-OVER-THERMAL (IoT) LOAD CONTROL - An uplink power control scheme for a wireless communication system is provided. In general, a subscribing station is located within a serving sector of a cell served by a base station in a wireless communication network. In one embodiment, the subscribing station obtains interference parameters for one or more neighboring sectors of the serving sector of the subscribing station. In this embodiment, the interference parameters are interference thresholds. The subscribing station then controls a maximum transmit power, and thus a power headroom, of the subscribing station based on the interference thresholds for the one or more neighboring sectors. | 03-15-2012 |
20120064934 | PROVIDING AN INDICATOR OF PRESENCE OF A FIRST ACCESS NETWORK THAT IS CAPABLE OF INTERWORKING WITH A SECOND ACCESS NETWORK - A mobile station receives a control message containing an indicator of presence of a first access network that operates according to a first protocol that is capable of interworking with a second access network that operates according to a second, different protocol. In response to receiving the indicator, the mobile station performs a procedure to establish a personality for the mobile station that specifies the configuration to allow the mobile station to use features of the first access network that enable interworking with the second access network. | 03-15-2012 |
20120063372 | METHOD AND APPARATUS FOR ADAPTIVE CHANNEL UTILISATION - A transceiver with an adaptable filter and a method of controlling the settings of the filter to adapt to local channel assignments and usage are provided. The adaptable filter is connected in at least one of the transmitter path and the receiver path of the transceiver to separate signals from adjacent spectrum blocks to permit use of all of the channels in the adjacent spectrum blocks and to separate signals in adjacent or nearby channels in a shared-channel block. A method and system for forward link control signalling are provided. The forward link control signalling includes a frame for transmission that includes at least one control channel that includes control information for receivers sharing a common characteristic, and a guide channel that includes information pertaining to the at least one control channel, including control information for receivers sharing a common characteristic. | 03-15-2012 |
20120060069 | GENERATION AND APPLICATION OF A SUB-CODEBOOK OF AN ERROR CONTROL CODING CODEBOOK - There is provided a method of encoding and decoding data using an error control code having a codebook G. The codebook G is a sub-codebook of a codebook P. Each codeword g in the sub-codebook G has an autocorrelation amplitude that is different from and higher than each correlation amplitude between g and each of the other codewords in the sub-codebook G. In one specific embodiment in which the codebook P is that of a Reed-Muller code, using G instead of P reduces the likelihood of the presence of more than one maximum correlation amplitude when computing the non-coherent decision metric during decoding. | 03-08-2012 |
20120058768 | SYSTEM AND METHOD FOR RESTRICTING MOBILITY IN WIRELESS NETWORKS - This invention provides a method, system and apparatus for controlling mobility on a wireless network, which includes retrieving a network mobility preference, the network mobility preference indicating a level of mobility service for the mobile station, the level of mobility service indicating the extent to which the mobile station can handoff among base stations of the wireless network, and establishing a level of mobility service for the mobile station based on the retrieved network mobility preference. The method and apparatus may further include determining the level of mobility service for the mobile station to be fully or partially restricted based on the mobility preference. | 03-08-2012 |
20120058760 | INCREASING TIME INTERVAL BETWEEN SUCCESSIVE SEARCHES FOR SIGNALING OF NEIGHBORING CELLS OF A DIFFERENT WIRELESS TECHNOLOGY - A mobile station attached to an access network receives a control message identifying neighboring cells of a different wireless technology than the access network. The mobile station searches for signaling of the neighboring cells of the different wireless technology, and in response to not being able to detect the signaling of the neighboring cells, the mobile station increases a time interval between successive searches for the signaling. | 03-08-2012 |
20120047407 | USING A VARIABLE TIMER FOR SENDING AN ERROR INDICATION - Upon receiving a particular data unit by a receiving layer of a wireless device, it is detected that a previous data unit earlier in sequence to the particular data unit has not yet been received by the receiving layer. A timer is started in response to the detecting, where the timer has a time-out period that is variable dependent upon a parameter associated with receipt of the particular data unit. Upon expiration of the timer based on the timeout period, the receiving layer generates an error indication. | 02-23-2012 |
20120039290 | METHOD AND SYSTEM FOR PROVIDING AN UPLINK STRUCTURE AND IMPROVED CHANNELIZATION SCHEME IN A WIRELESS COMMUNICATION NETWORK - A method and system are provided to perform channelization in a wireless communication network, wherein the wireless communication network including at least one base station that is communicatively coupled to at least one mobile terminal. A bandwidth of the wireless communication network is divided into a plurality of zones at the base station. Resource blocks are provided at the base station to receive data symbols transmitted in the wireless communication network. A plurality of resource blocks are combined at the base station to form a physical basic channel unit which are allocated to one of the plurality of zones at the base station. A permutation is performed on the physical basic channel unit to form a logical basic channel unit. A channel is provided to communicatively couple the base station and the mobile terminal so that the mobile terminal may send an access grant message and a user identification to the base station to transmit data in the logical basic channel unit. | 02-16-2012 |
20120027204 | BANDWIDTH EFFICIENT METHOD AND SYSTEM FOR OBSCURING THE EXISTENCE OF ENCRYPTION IN A COMMUNICATIONS CHANNEL - A system, method, and network interface obscures the existence of data encryption in a communication network is provided. A set of characters is generated by using a set of encryption keys as an input to a pseudo-random function. Each character corresponds to an index value. The encrypted data is divided into a plurality of parts. Each part is sectioned into a plurality of groups. Each group of the plurality of groups is encoded by mapping the group to a character in the set of characters according to its corresponding index value. The mapped characters are transmitted through the communication network. | 02-02-2012 |
20120027136 | SYSTEM ACCESS AND SYNCHRONIZATION METHODS FOR MIMO OFDM COMMUNICATIONS SYSTEMS AND PHYSICAL LAYER PACKET AND PREAMBLE DESIGN - A method and apparatus are provided for performing acquisition, synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples, whose first signal sample lies within the searching window, and known values. The correlations are performed in the frequency domain of the received signal. In a multiple-output OFDM system, each antenna of the OFDM transmitter has a unique known value. The known value is transmitted as pairs of consecutive pilot symbols, each pair of pilot symbols being transmitted at the same subset of sub-carrier frequencies within the OFDM frame. | 02-02-2012 |
20120020424 | MULTI-USER MIMO SYSTEMS AND METHODS - A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI. | 01-26-2012 |
20120020403 | MULTI-ANTENNA SCHEDULING SYSTEM AND METHOD - A wireless communication method and system using virtual MIMO (“V-MIMO”) are provided. Post processing signal to interference and noise ratios (“SINR”) for a plurality of signals corresponding to a plurality of mobile terminals arranged as a V-MIMO group are estimated. The one of the plurality of mobile terminals having the highest post processing SINR is selected. Wireless communication for the selected mobile terminal is scheduled. The signal corresponding to the selected mobile terminal is cancelled. Post processing signal to interference and noise ratios (“SINR”) for the signals corresponding to the remaining mobile terminals is re-estimated. The one of the remaining mobile terminals having the highest post processing SINR is selected. Wireless communication for the selected remaining mobile terminal is scheduled. | 01-26-2012 |
20120011224 | Mechanism to Divert an IP Flow Over a Non-IP Transport - Session flows between a client ( | 01-12-2012 |
20120008630 | Border Gateway Protocol Extended Community Attribute for Layer-2 and Layer-3 Virtual Private Networks - Described are a network, computer program product, and method of distributing routing information for a virtual private network (VPN) application through a packet-switched network (PSN) having fully meshed provider edge (PE) routers through Provider Backbone Bridge (PBB) tunnels. A PE router is configured to participate in a VPN and to run a BGP (Border Gateway Protocol) as an auto-discovery process for finding one or more other PE routers participating in the VPN. The VPN is associated with a PBB tunnel. A service instance identifier (I-SID) is assigned to the VPN. The PE router advertises membership in the VPN by including the I-SID assigned to the VPN in a BGP message issued during the auto-discovery process. | 01-12-2012 |
20120002656 | Clientless Mobile Subscribers with Seamless Roaming Over Scalable Wide Area Wireless Networks - System and method for seamless roaming over scalable wide area Wireless LAN networks (WAWLAN) with clientless mobile subscribers. A preferred embodiment comprises a wireless gateway (WG) coupled to one or more access points in a wireless network to form a wireless cluster (WC), a network access gateway (NAG) coupled to a wired network, and a switch coupled to the WG and the NAG. Each wireless cluster is a Wireless LAN Network (WLAN) with homogenous or heterogeneous network architecture. The WG detects mobile nodes in a wireless cluster and tracks mobile node location in the wireless cluster. The NAG is an anchor point for mobile nodes in the WAWLAN and maintains a fixed source of information about each mobile node regardless of their mobility. The switch provides connectivity between the NAG and the WG. Seamless roaming across Wireless LAN network boundary by mobile subscribers without requiring special mobility enabling client software. | 01-05-2012 |
20110320923 | Method, Apparatus, Processor-Readable Media and Signals for Acquiring and Presenting Acquired Multimedia Content - The present invention provides a method, apparatus, processor-readable medium and signals for building a presentation by receiving user input identifying multimedia content to be included in a presentation and copying multimedia content identified by such user-input from a multimedia source to memory, for access by a presentation application. Copying may involve copying multimedia content from an application while the application is using the multimedia content. There is also provided a method, apparatus, processor-readable medium and signals for providing a presentation by identifying multimedia content previously identified by a user as to be included in the presentation and accessing and presenting at least some of the multimedia content previously identified by the user. | 12-29-2011 |
20110317698 | Multicast-Enabled Address Resolution Protocol (ME-ARP) - A Multicast-Enabled Address Resolution Protocol (ME-ARP) is disclosed. This ME-ARP allows the building of independent IP based Virtual Private LAN segments (VPLS) over a multicast enabled IP backbone using stateless tunnels and optimal VPLS traffic forwarding. Each VPLS has an associated IP subnet which is completely independent from other VPLS or the underlying IP backbone itself. Each Customer Premises Equipment (CPE) device needs only to be configured with a VPLS identifier and its serving IP subnet per VPLS designated interface. | 12-29-2011 |
20110317678 | Extended Private LAN - A virtual private network is provided across a Provider Link State Bridging (PLSB) network between a first node connected to a private LAN and a second node connected to a roaming device. The roaming device is authenticated. A successful authentication results in a Service Identifier for the VPN being sent to the second node. Connectivity between members of the VPN service instance is maintained as part of the PLSB Link State process for forwarding table maintenance, rather than by any form of explicit signalling. A single Customer Virtual Bridge/Virtual Switch Instance can be located at the first node to provide point-to-point connectivity to each roaming device. A virtual Residential Gateway function can be combined with the Customer Virtual Bridge/Virtual Switch Instance. | 12-29-2011 |
20110317625 | Antenna Diversity - The invention is directed to a method of communicating between a first node including a plurality of antennas and a second node, the method comprising the steps of: transmitting a signal from the first node to said second node using each of the plurality of antennas of the first node; at the second node, selecting one of the plurality of antennas for use; and communicating between the two nodes using this selected antenna. The invention is also directed to apparatus and software for performing the methods. | 12-29-2011 |
20110310776 | TELECOMMUNICATIONS NETWORK - The present invention relates generally to a cellular telecommunications network. Each cell has at least one base station for sending messages on a downlink of a Frequency Division Duplex (FDD) to end user equipments within the cell and for receiving messages on an uplink from end user equipments within the cell. Other end user equipment located within the cell which have no or only poor communication directly with the base station over the FDD communicate with the base station indirectly via an intermediate end user equipment, such as a mobile telephone. The intermediate end user equipment includes an FDD transceiver and a Time Division Duplex (TDD) transceiver and an FDD/TDD interface. The intermediate end user equipment receives signals from the base station over the FDD using the FDD transceiver and relays them via the FDD/TDD interface and the TDD transceiver towards a relevant one of the other end user equipments over a TDD and receives signals from the other end user equipment over the TDD using the TDD transceiver and relays them via the FDD/TDD interface and the FDD transceiver to the base station over the FDD, The network provider thereby improves capacity and coverage by utilizing TDD channels without having to deploy and TDD infrastructure. | 12-22-2011 |
20110307755 | STRUCTURED LOW-DENSITY PARITY-CHECK (LDPC) CODE - A method for constructing a low-density parity-check (LDPC) code using a structured base parity check matrix with permutation matrix, pseudo-permutation matrix, or zero matrix as constituent sub-matrices; and expanding the structured base parity check matrix into an expanded parity check matrix. A method for constructing a LDPC code using a structured base parity check matrix H=[H | 12-15-2011 |
20110306291 | ENABLING DOWNLINK TRANSPARENT RELAY IN A WIRELESS COMMUNICATIONS NETWORK - Methods and apparatus are described for enabling downlink transparent relay in a wireless communication network. In a wireless communications network, a base station and a mobile station may communicate with each other via a relay station, as needed. Transparent relay may allow for relay communication between a base station and a mobile station although the mobile station is unaware of the relay station. However, non-contiguous transmission of a relay station may lead to channel quality measurement and channel estimation degradation during downlink transparent relay. According to some aspects, a base station may schedule a mobile station to a transmission mode that utilizes dedicated pilot signals for downlink transparent relay, and a relay station may transmit data and dedicated pilot signals over the same channel resources as the base station. According to some aspects, the relay station may null common pilot signals transmitted by the base station. | 12-15-2011 |
20110299439 | EFFICIENT LOCATION UPDATES, PAGING AND SHORT BURSTS - A mobile terminal in a wireless communication network may be one of several modes of operation. When in an idle mode, the mobile terminal may avoid a lengthy random access procedure normally associated with responding to a page from a base station, if the base station includes in the page an indication of a resource that the mobile terminal may utilize when responding to the page. Additionally, the mobile terminal may transmit an efficient location update MAC header to a base station, whether prompted to by a page from the base station or not. Furthermore, without leaving the idle mode or a sleep mode, the mobile terminal may exchange short data burst messages with a base station. | 12-08-2011 |
20110299405 | LABEL SWITCHED PATH OAM WRAPPER - Methods and devices for logically segmenting an LSP so that OAM DTUs may be used to determine the performance and/or the status of LSP segments. To segment a previously determined LSP, a dedicated subpath (a logical LSP) within that predetermined LSP is defined between two LSRs that are capable of processing OAM DTUs. The source node (source LSR) establishes a logical LSP between itself and the destination node (destination LSR) using an LDP. In doing this, the logical LSP traverses a specific path and transits through specific nodes in that path. The source node then transmits an OAM DTU or any other specialized DTU to the destination node using a label specifically associated with the logical LSP that was established. The characteristic of the specific path traversed by the logical LSP can thus be determined by when, how, and if the specialized DTU is received by the destination node. | 12-08-2011 |
20110298565 | DEVICE AND METHOD FOR CASCADING FILTERS OF DIFFERENT MATERIALS - Some embodiments of the invention provide a filter having at least one first filter, each first filter being a band-reject type filter having a first set of filter parameters that are a function of a first material used to fabricate the at least one first filter, and at least one second filter, each second filter having a second set of filter parameters that are a function of a second material used to fabricate the at least one second filter, each second filter being one of a band-reject type filter and a band pass type filter. The at least one first filter and the at least one second filter are then cascaded together to form the filter. The first material and the second material are different materials. The cascaded filter has a new third set of filter parameters that are a function of both the first material and the second material. Other embodiments of the invention include a method for fabricating the filter and a method of filtering using such a cascaded filter. | 12-08-2011 |
20110293028 | METHOD AND SYSTEM FOR REDUCED COMPLEXITY CHANNEL ESTIMATION AND INTERFERENCE CANCELLATION FOR V-MIMO DEMODULATION - A method and system for wireless communication in a wireless communication network. The wireless communication network has a first mobile terminal and a second mobile terminal arranged in virtual multiple input, multiple output (“V-MIMO”) communication with a base station. A first wireless communication uplink channel corresponding to the first mobile terminal is estimated. The estimate is based on a first reference symbol signal and the cancellation of interference from a second reference symbol signal received from the second mobile terminal. A second wireless communication uplink channel corresponding to the second mobile terminal is estimated. The estimate is based on the second reference symbol signal and the cancellation of interference from the first reference symbol signal received from the first mobile terminal. The estimated first wireless communication uplink channel is used to demodulate a first data signal received from the first wireless device, and the estimated second wireless communication uplink channel is used to demodulate a second data signal received from the second wireless device. | 12-01-2011 |
20110292838 | PROVIDER LINK STATE BRIDGING (PLSB) COMPUTATION METHOD - A method of multicast route computation in a link state protocol controlled network. A spanning tree is computed from a first node to every other node in the network using a known spanning tree protocol. The network is then divided into two or more partitions, each partition encompassing an immediate neighbour node of the first node and any nodes of the network subtending the neighbour node on the spanning tree. Two or more of the partitions are merged when a predetermined criterion is satisfied. Nodes within all of the partitions except a largest one of the partitions are then identified, and each identified node examined to identify node pairs for which a respective shortest path traverses the first node. | 12-01-2011 |
20110286499 | Reduced Complexity Channel Estimation for Uplink Receiver - The present invention proposes an LTE eNodeB receiver channel estimation technique that is referred to as reduced complexity minimum mean squared error (MMSE) technique for channel estimation. From the invention's assumptions, estimations and modified calculations, the present invention generates precise channel estimates of RS using the reduced complexity MMSE matrix and previously computed LS channel estimates H | 11-24-2011 |
20110286349 | Method and System for User Equipment Location Determination on a Wireless Transmission System - Neighbor cell hearability can be improved by including an additional reference signal that can be detected at a low sensitivity and a low signal-to-noise ratio, by introducing non-unity frequency reuse for the signals used for a time difference of arrival (TDOA) measurement, e.g., orthogonality of signals transmitted from the serving cell sites and the various neighbor cell sites. The new reference signal, called the TDOA-RS, is proposed to improve the hearability of neighbor cells in a cellular network that deploys 3GPP EU-TRAN (LTE) system, and the TDOA-RS can be transmitted in any resource blocks (RB) for POSCH and/or MBSFN subframe, regardless of whether the latter is on a carrier supporting both PMCH and POSCH or not. Besides the additional TDOA-RS reference signal, an additional synchronization signal (TDOA-sync) may also be included to improve the hearability of neighbor cells. | 11-24-2011 |
20110283000 | Management of Queues in Contact Centres - Contacts are managed within a contact centre by representing each contact as a software object which contains skillset and priority identifiers. Contact objects are queued relative to one another by means of references to and/or from the object(s) immediately ahead of and behind each contact. In this way a conventional queue can be dispensed with. Queries can be made to a plurality of contact centres across a network to identify objects matching certain criteria at the top of each local queue. In this way a set of local queues substitutes for a network queue providing increased resilience in the case of the failure of any individual component of the network or of the network itself. | 11-17-2011 |
20110280135 | ERROR HANDLING FOR NAMED SIGNAL EVENTS IN WIRELESS COMMUNICATIONS - The present invention provides a technique for handling damaged named signal event (NSE) packets that are received in association with a voice over packet based telephony call. The received packets for a telephony call may include voice packets as well as NSE packets. Upon receipt of the packets at a physical layer, the packets are processed at a link layer to detect damaged packets having link layer errors. The incoming packets are sent to an audio application at an application layer for further processing. For damaged packets, link layer error indicia is generated at the link layer and sent to the audio processing application. The audio application will use the link layer error indicia to identify damaged packets or payloads associated with damaged packets, and determine whether the payloads corresponding to the damaged packets include NSE information defining an NSE. Damaged NSE packets are processed accordingly. | 11-17-2011 |
20110275310 | Method for Securing A Transmission, Associated System and Mediation Platform - In a system comprising a broadcasting subsystem and a radiocommunication subsystem each connected to a mediation platform, said transmission being ciphered and arranged for being deciphered by using a key, the following steps are performed at the mediation platform, relatively to a user or group of users having terminals: determining one first and at least one second sets of values from said key, so that the knowledge of all the determined sets of values is required to retrieve the key; and controlling the broadcasting subsystem so that it transmits the first set of values to the user or group of users and the radiocommunication subsystem so that it transmits the at least one second set of values to the user or group of users. | 11-10-2011 |
20110274066 | PROVIDING A DOWNLINK CONTROL STRUCTURE IN A FIRST CARRIER TO INDICATE CONTROL INFORMATION IN A SECOND, DIFFERENT CARRIER - A mobile station receives a downlink control structure in a first carrier, where the downlink control structure indicates that control information for the mobile station is on a second, different carrier. The mobile station decodes the control information in the second carrier, where the control information specifies resource allocation of a wireless link for the mobile station. More specifically, according to some implementations, the control channel in the first carrier specifies the resource allocation for an extended control channel in the second carrier, where the extended control channel specifies the resource allocation for traffic data of a wireless link for the mobile station. | 11-10-2011 |
20110274018 | CONTENT DIFFERENTIATED HIERARCHICAL MODULATION USED IN RADIO FREQUENCY COMMUNICATIONS - The present invention employs hierarchical modulation to simultaneously transmit data over different modulation layers using a carrier RF signal. Each modulation layer may be of a higher or lower order than the other modulation layers. Certain embodiments of the present invention may transmit different information on the different modulation layers. Other embodiments of the present invention may use the different layers for processing different information streams. | 11-10-2011 |
20110274012 | TRANSITIONING OF A PACKET-SWITCHED EMERGENCY CALL BETWEEN FIRST AND SECOND TYPES OF WIRELESS ACCESS NETWORKS - A mobile station that is initially attached to a first type of wireless access network is involved in a packet-switched emergency call. Upon detection of transitioning of the mobile station, a message is sent indicating transitioning of the mobile station from the first type wireless access network to the second type wireless access network to cause the packet-switched emergency call to be performed over the second type wireless access network. | 11-10-2011 |
20110273980 | Distributed Failure Recovery in a Routed Etherent Network - Link identifiers such as VIDs, selected from a defined range of values, are locally assigned by each node on a link state protocol controlled Ethernet network to each of its links or adjacencies. The link identifiers are assigned by the nodes such that each link or adjacency at the node is uniquely identified by a different link identifier. A link state protocol adjacency notification mechanism or other flooding mechanism is used to disseminate the locally assigned link identifiers to other nodes on the link state protocol controlled Ethernet network. The link identifiers are added by the nodes to their topology databases to enable detour routes to be locally calculated by the nodes on the network in a distributed manner. Upon occurrence of a failure, the link identifiers are used to source route traffic around the failure so that traffic may continue to traverse the link state protocol controlled Ethernet network. | 11-10-2011 |
20110268110 | Providing Packet-Based Multimedia Services via a Circuit Breaker - A packet-based multimedia service is provided to a terminal in a network. A packet signaling connection is established between the terminal and the network. Signaling information for the multimedia service is transferred via the packet signaling connection using Session Initiation Protocol (SIP) or a similar protocol. A circuit bearer connection is also established with the terminal. Data for the multimedia service is transferred via the circuit bearer connection. This allows the data to be carried across networks which do not support the required QoS functionality for the packet-based service, or which cannot efficiently carry packet-based data. The circuit bearer connection can be established by a network entity or by the terminal. The circuit bearer can be interworked to a packet-switched bearer at some point in the network, such as at a gateway, so as to provide a remote party with the appearance that a fully packet-switched connection is being used. | 11-03-2011 |
20110267988 | APPARATUS AND METHOD FOR PACKET-BASED MEDIA COMMUNICATIONS - The performance of a voice conference using a packet-based conference bridge can be improved with a number of modifications. In one modification, the conference bridge receives speech indication signals from the individual packet-based terminals within the voice conference, these speech indication signals then being used by the conference bridge to select the talkers within the voice conference. This removes the need for speech detection techniques within the conference bridge, hence decreasing the required processing power and the latency within the conference bridge. In another modification, the conference bridge sends addressing control signals to the individual packet-based terminals selected as talkers, these addressing control signals directing the terminals selected as talkers to directly transmit their voice data packets to the other terminals within the voice conference. This direct transmission of voice data packets can reduce transcoding and latency within the network. These two modifications could further be combined, resulting in a conference bridge that receives speech indication signals, selects the talkers for the voice conference and outputs addressing control signal to the talkers. In this case, the advantages of the two modifications are gained as well as additional capacity advantages resulting from no voice signals actually traversing the conference bridge. | 11-03-2011 |
20110261937 | METHOD AND APPARATUS FOR CONTROLLING CALLING-PARTY IDENTIFICATION - The present invention provides a system, method, and apparatus for managing the calling-party identification information offered to called parties. Accordingly, a caller can designate the Caller ID information to the called party based on the context of the call (e.g. the role of the caller) rather than the terminal used. Typically the calling party does this by selecting which of multiple values they wish to have sent with the call request. It is beneficial to implement such a mechanism in a secure manner—the ability to employ a different calling-number or calling-name ID should be restricted to properly-authorized and authenticated persons—in order to ensure the quality of this information. Accordingly, preferred embodiments include an authentication mechanism for verifying the calling party information is authentic. | 10-27-2011 |
20110261781 | METHOD AND SYSTEM FOR PROVIDING AN UPLINK STRUCTURE AND MINIMIZING PILOT SIGNAL OVERHEAD IN A WIRELESS COMMUNICATION NETWORK - A method and system are provided having an uplink control structure and a pilot signal having minimal signal overhead for providing channel estimation and data demodulation in a wireless communication network. The uplink control structures enable mobile terminals to communicate with corresponding base stations to perform various functions including obtaining initial system access, submitting a bandwidth request, triggering a continuation of negotiated service, or providing a proposed allocation re-configuration header. A dedicated random access channel is provided to communicatively couple the base station and the mobile terminal so that the mobile terminal can select a random access signaling identification. A resource request is received at the base station to uplink resource information from the mobile terminal and an initial access information request is received from the mobile terminal to configure the base station connection. Pilot signals with varying density configurations are provided to include low density symbol patterns for multiple contiguous resource blocks and high density symbol patterns for single resource blocks. | 10-27-2011 |
20110261680 | GEOGRAPHIC REDUNDANCY FOR CALL SERVERS IN A CELLULAR SYSTEM BASED ON A BEARER-INDEPENDENT CORE NETWORK - In a bearer-independent core network, the switching and transport of the bearer streams is separated from the processing of call sessions that control the bearer streams. The switching and transport of the bearer streams is executed by media gateways and packet switches in the switching and transport layer of the network. The processing of calls sessions that control the bearer streams is executed by call servers in the call control layer of the network. The switching and transport layer of the network may be implemented using ATM or IP technology. In order to redirect the signaling links to a backup call server, a signaling gateway is used. Each media gateway includes a signaling gateway function. The signaling gateways redirect the signaling links by encapsulating each signaling message in a new packet in one embodiment. | 10-27-2011 |
20110261493 | DUAL VOLTAGE HOT SWAP MODULE POWER CONTROL - A module hot swap circuit includes a low voltage-drop rectifier adapted to receive either positive or negative voltages of different absolute values. The rectifier is coupled to a power manager that provides dual startup/shutdown voltage thresholds and inrush current limiting. A detector prevents reverse current flow allowing the module to hold up during input voltage drop-outs. | 10-27-2011 |
20110255551 | METHOD AND SYSTEM FOR WEIGHTED FAIR QUEUING - A system for scheduling data for transmission in a communication network includes a credit distributor and a transmit selector. The communication network includes a plurality of children. The transmit selector is communicatively coupled to the credit distributor. The credit distributor operates to grant credits to at least one of eligible children and children having a negative credit count. Each credit is redeemable for data transmission. The credit distributor further operates to affect fairness between children with ratios of granted credits, maintain a credit balance representing a total amount of undistributed credits available, and deduct the granted credits from the credit balance. The transmit selector operates to select at least one eligible and enabled child for dequeuing, bias selection of the eligible and enabled child to an eligible and enabled child with positive credits, and add credits to the credit balance corresponding to an amount of data selected for dequeuing. | 10-20-2011 |
20110255443 | VIRTUAL ROUTERS FOR GMPLS NETWORKS - Virtual routers that abstract photonic sub-domains are provided for GMPLS networks. A virtual router uses a link viability matrix to keep track of the set of viable connections between inputs and outputs of a photonic sub-domain. A virtual router may receive RSVP-TE signaling messages and either allocate a working input to output link pair or, if explicitly signaled, verify that the requested link is currently viable. A virtual router also advertises, in its link state updates, the current set of possible outputs for any input link. Shortest path computations can be implemented utilizing virtual routers by modifying a topology graph in accordance with the link viability matrix of the virtual router. | 10-20-2011 |
20110255417 | AUTOMATIC MEP PROVISIONING IN A LINK STATE CONTROLLED ETHERNET NETWORK - Ethernet OAM MEPs are automatically configured in a link state protocol controlled Ethernet network. A node operating in the link state protocol controlled Ethernet network receives a Link State PDU (LSP) containing a TLV having a MEP associated with the Ethernet MAC node ID of a second node in the link state protocol controlled Ethernet network, where the path between the first and second node includes a plurality of links. The node updates a forwarding table to indicate an association between the MEP ID and a Ethernet MAC node ID of the second node. An Ethernet OAM maintenance endpoint is produced in a link state protocol controlled Ethernet network by hashing a Sys-ID to produce a MEP; storing the MEP in a TLV; and forwarding the TLV over the link state protocol controlled Ethernet network in an LSP. | 10-20-2011 |
20110248795 | BAND REJECT FILTERS - Distributed band reject filters are disclosed. A band reject filter includes a first acoustic resonator and a second acoustic resonator, each of which has either shunt resonators adapted to resonate substantially at respective resonance frequencies defining a rejection frequency band or series resonators adapted to anti-resonate substantially at respective anti-resonance frequencies defining the rejection frequency band. These resonators are connected through a phase shifter which imparts an impedance phase shift of approximately 45° to 135°. Exemplary applications of the band reject filters disclosed herein include implementation as an inter-stage band reject filter for a base station power amplifier for a wireless communication system, as a radio frequency band reject filter in a duplexer for a wireless communication terminal, and in a low noise amplifier input stage. | 10-13-2011 |
20110246594 | METHOD AND APPARATUS FOR ENABLING COMMUTER GROUPS - A commuter groups service (CGS) allows commuters to join commuter groups so that they are able to socialize while commuting. Through the commuter groups, the users may share commuting routes, traffic updates, road conditions, and other information. Group members may arrange car pools, short term riding arrangements, and may anonymously or directly contact each other. The CGS may collect group member position information, e.g. GPS information, to enable the CGS to calculate traffic conditions and to select location specific information for group members. The system may include an on-line service accessible through a computer or wireless networking device. The user may log into the CGS, create or modify a user profile, and join groups of their choosing. Groups may be associated with specific events or with getting to/from work. Commuter groups may be formed for commuters that use private vehicles and/or public transportation. | 10-06-2011 |
20110244868 | METHOD AND SYSTEM FOR SOFT HANDOFF IN MOBILE BROADBAND SYSTEMS - The present invention provides a method and system for facilitating efficient handoff and data throughput in mobile broadband communication systems. Methods implemented by a system constructed in accordance with the principles of the present invention include selectively enabled soft handoff, performing Layer 2 bearer functions at the base station and using the mobile device to coordinate soft handoff and interference avoidance without the need for a centralized coordination function. | 10-06-2011 |
20110243282 | Method of Estimating the Symbols of a Digital Signal and Receiver for Implementing Said Method - The invention relates to a method of estimating symbols carried by a digital signal that is received by a receiver over a communication channel ( | 10-06-2011 |
20110243257 | METHOD FOR MONITORING RADIO EQUIPMENT FOR COMMUNICATION BETWEEN A MOBILE TERMINAL AND A CELLULAR INFRASTRUCTURE WITH SPREAD SPECTRUM AND ARRANGEMENT FOR PERFORMING SAID METHOD - Parameters for the propagation channels between each mobile terminal ( | 10-06-2011 |
20110243196 | MULTIPLE REDUNDANT GNSS SYNCHRONIZATION SYSTEM - A diamine absorbent that contains heat stable salts is regenerated using an ion exchange process wherein the cation exchange resin is regenerated using sulfurous acid reflux. | 10-06-2011 |
20110243156 | TECHNIQUES FOR TIME TRANSFER VIA SIGNAL ENCODING - Techniques for time transfer via signal encoding are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for time transfer via signal encoding comprising generating a time service ordered-set for inclusion in a physical coding sublayer frame of a physical layer device, generating time service data for inclusion in the physical coding sublayer frame of the physical layer device, and transmitting the physical coding sublayer frame. | 10-06-2011 |
20110243129 | Multi-Mode Endpoint in a Communication Network System and Methods Thereof - A method, apparatus, and communication network system that allows an endpoint to be simultaneously registered with more than one communications server is described. In one embodiment, the communication network system includes a network, a plurality of communications servers that are coupled to the network, and a plurality of endpoints coupled to the network. Each endpoint is capable of being simultaneously registered with more than one communications server. A communication method for an endpoint involves registering a first logical line of the endpoint with a first communications server, and registering a second logical line of the endpoint with a second communications server. Consequently, flexibility is obtained by allowing an endpoint to choose the registering communications server for each logical line of the endpoint. | 10-06-2011 |
20110243062 | METHOD AND SYSTEM FOR A WIRELESS MULTI-HOP RELAY NETWORK - In a wireless multi-hop relay network arranged in a tree topology, the base station and one or more relay stations are associated as a virtual base station (VBS). The base station and each relay station have a unique virtual base station identifier (VBS-ID) associated with the path defined by the base station and the one or more relay stations. a relay station in the branch uses its VBS-ID for communicating with an attached subscriber station (e.g. a mobile station) such that communications between the base station and subscriber station occur via the VBS. Subscriber station data communications are relayed between the base station and the one or more relay stations over the VBS via a tunnel connection. The VBS is autoconfigurable. Mobility for subscriber stations and relay stations is provided through reconfiguration of VBS's. | 10-06-2011 |
20110243061 | METHOD AND SYSTEM FOR A WIRELESS MULTI-HOP RELAY NETWORK - In a wireless multi-hop relay network arranged in a tree topology, the base station and one or more relay stations are associated as a virtual base station (VBS). The base station and each relay station have a unique virtual base station identifier (VBS-ID) associated with the path defined by the base station and the one or more relay stations. a relay station in the branch uses its VBS-ID for communicating with an attached subscriber station (e.g. a mobile station) such that communications between the base station and subscriber station occur via the VBS. Subscriber station data communications are relayed between the base station and the one or more relay stations over the VBS via a tunnel connection. The VBS is autoconfigurable. Mobility for subscriber stations and relay stations is provided through reconfiguration of VBS's. | 10-06-2011 |
20110242981 | MULTI-STAGED SERVICES POLICING - A multi-staged services policer implements multiple policies, at an edge device of network, on the data traffic of a single customer. In such a multi-staged services policer, services policers in a given stage may receive information from policers in subsequent stages. This information may be used when policing in the given stage. | 10-06-2011 |
20110238850 | SYSTEM AND METHOD FOR TRANSLATING APPLICATION PROGRAM NETWORK SERVICE REQUESTS INTO ACTIONS AND PERFORMING THOSE ACTIONS THROUGH THE MANAGEMENT AND/OR CONTROL PLANE RESPONSIVE TO PREVIOUSLY DEFINED POLICIES AND PREVIOUS REQUESTS BY THE SAME OR ANOTHER APPLICATION PROGRAM - Application program network service requests are translated into specific actions that are then performed through the management plane and/or control plane. The translations and resulting actions are responsive to previously defined policies for the communication network, and may further reflect processing of previous service requests by the same or another application program. The amount of resources available for use by a given application program may be predefined based on a globally defined network policy. Each service request obtained from an application program may be translated into multiple actions performed using various specific protocols and/or interfaces provided by either the management plane, the control plane, or both the management and control planes. Reports of network activity, status and/or faults for a requesting application program may be tailored to the requesting program's view of the network, and passed directly and exclusively to the requesting program. | 09-29-2011 |
20110237262 | METHOD AND SYSTEM FOR SOFT HANDOFF IN MOBILE BROADBAND SYSTEMS - The present invention provides a method and system for facilitating efficient handoff and data throughput in mobile broadband communication systems. Methods implemented by a system constructed in accordance with the principles of the present invention include selectively enabled soft handoff, performing Layer 2 bearer functions at the base station and using the mobile device to coordinate soft handoff and interference avoidance without the need for a centralized coordination function. | 09-29-2011 |
20110235683 | ANTENNA SYSTEMS WITH COMMON OVERHEAD FOR CDMA BASE STATIONS - Systems and methods for use in CDMA antenna systems are provided in which signals each having a common overhead component are transmitted on a set of adjacent beams of a sector with a micro-timing offset between signals transmitted on adjacent pairs of beams which is large enough that destructive cancellation substantially does not occur between the pair of beams. | 09-29-2011 |
20110235618 | METHOD AND SYSTEM FOR SOFT HANDOFF IN MOBILE BROADBAND SYSTEMS - The present invention provides a method and system for facilitating efficient handoff and data throughput in mobile broadband communication systems. Methods implemented by a system constructed in accordance with the principles of the present invention include selectively enabled soft handoff, performing Layer 2 bearer functions at the base station and using the mobile device to coordinate soft handoff and interference avoidance without the need for a centralized coordination function. | 09-29-2011 |
20110235562 | SYSTEM AND METHOD FOR SPATIAL MULTIPLEXING-BASED MULTIPLE ANTENNA BROADCAST/MULTICAST TRANSMISSION - Methods and devices are provided for implementing two types of sub-channel arrangements. A first type of sub-channel arrangement involves defining a first traffic portion and a second traffic portion of a transmission resource, transmitting broadcast traffic on at least one first antenna of a plurality of antennas in the first traffic portion using a first sub-channelization, transmitting multicast traffic on at least one second antenna of the plurality of antennas, the at least one second antenna being distinct from the at least one first antenna, in the first traffic portion using a second sub-channelization, and transmitting unicast traffic on at least one antenna of the plurality of antennas in the second traffic portion using a third sub-channelization. A second type of sub-channel arrangement involves defining a first traffic portion and a second traffic portion, wherein for a portion of the transmission resource, a portion of the first traffic portion overlaps with a portion of the second traffic portion. In the portion of the transmission resource in which a portion of the first traffic portion overlaps with a portion of the second traffic portion, the channel arrangement involves transmitting broadcast/multicast traffic on at least one first antenna of a plurality of antennas using a first sub-channelization and b) transmitting unicast traffic on at least one second antenna of the plurality of antennas, the at least one second antenna being distinct from the at least one first antenna, using a second sub-channelization. The first, second and third sub-channelizations may be based on either one of or a combination of FDM sub-channelization and TDM sub-channelization. | 09-29-2011 |
20110235557 | SELF-MATCHED BAND REJECT FILTER - The present application describes a radio frequency band reject filter including an input port, an output port, a plurality of acoustic resonators and an inductor for matching the impedance of the plurality of acoustic resonators. The inductor is positioned within the band reject filter in respect of the plurality of acoustic resonators such that a static capacitance between the input port and the inductor is substantially equivalent to a static capacitance between the output port and the inductor. The plurality of acoustic resonators may be a plurality of parallel resonators, a plurality of series resonators or a combination of series and parallel resonators. The radio frequency band reject filter is fabricated using any of surface acoustic wave (SAW) technology, thin film bulk acoustic resonator (FBAR) technology, and bulk acoustic wave (BAW) technology. | 09-29-2011 |
20110234745 | SOURCE SELECTION FOR CONFERENCE BRIDGES - The present invention provides an audio source selection process for a conference bridge. The conference bridge receives multiple audio sources and selects at least one of the audio sources based on the relative signal levels associated with the audio signal at each of the audio sources. The audio signals associated with the selected source are delivered to conference participants via one or more audio outputs. The conference bridge will repeatedly employ a selection process to select an audio source based on signal level measurements for the audio signals of the audio sources. During the selection process, the influence of a selected audio source relative to the other unselected audio sources is reduced, after the selected audio source has remained selected for more than a first time period. | 09-29-2011 |
20110230167 | Method and System for Multimedia Message Delivery in a Communication System - A method and system of delivering a Multimedia Messaging Service (MMS) message is disclosed. In one example, the method includes providing a storage location and time duration for outside content to be indirectly referenced by an MMS message. Receiving and storing the outside content via a transport network is also disclosed. The method may include encapsulating an MMS message in a payload of a transport message with the MMS message indirectly referencing the storage location of the outside content. Delivery of the transport message may occur over a transport network. Confirming receipt of the transport message is also disclosed. | 09-22-2011 |
20110228705 | WIRELESS MESH NETWORK TRANSIT LINK TOPOLOGY OPTIMIZATION METHOD AND SYSTEM - A method and configuration manager generates a routing topology for a wireless mesh network. The wireless mesh network has a plurality of internal nodes, at least one edge node, and at least one originating device. A plurality of potential routing solutions is determined which contain a plurality of paths through the wireless mesh network from the at least one originating device to the at least one edge node such that data communicated from the at least one originating device reaches the at least one edge node in no more than a predetermined number of hops. Each potential routing solution is based on at least one measured wireless communication parameter between internal nodes. Metric calculations for each potential routing solution are computed to determine a preferred routing solution. The wireless mesh network is configured to route traffic using the preferred routing solution. | 09-22-2011 |
20110227665 | Frequency Agile Filter Using a Digital Filter and Bandstop Filtering - The present invention is a hybrid RF-digital signal processor-based filter for multiband radio architectures, systems capable of spectrum re-farming and software defined radios It performs low-loss frequency agile multiple notch filtering at RF where a large dynamic range exists at a filter input between signals in a stopband and passband It is a frequency dependent signal attenuation apparatus having two paths connected together by directional couplers The first path comprising a component such as a delay component or duplexer The second path comprising, in series, a down converter, a digital filter, an up converter, and a bandstop filter At the output of a power amplifier, the invention can be used to attenuate spurs, or noise within bands with strict emission constraints At the input of a low noise amplifier, the invention can be used to attenuate blockers and transmitter noise outside of the receiver passband. | 09-22-2011 |
20110227664 | Frequency Agile Filter Using a Digital Filter and Bandstop Filtering - The present invention is a hybrid RF-digital signal processor-based filter for multiband radio architectures systems capable of spectrum re-farming and software defined radios. It performs low-loss frequency agile multiple notch filtering at RF where a large dynamic range exists at a filter input between signals in a stopband and passband. It is a frequency dependent signal attenuation apparatus having two paths connected together by directional couplers. The first path comprising a component such as a delay component or duplexer. The second path comprising a bandstop filter connected to a down converter, a digital filter, and an up converter. At the output of a power amplifier, the invention can be used to attenuate spurs, or noise within bands with strict emission constraints. At the input of a low noise amplifier, the invention can be used to attenuate blockers and transmitter noise outside of the receiver passband. | 09-22-2011 |
20110223929 | SCHEDULING TRANSMISSION OF DATA AT A BASE STATION BASED ON AN INTERFERENCE INDICATOR MESSAGE FROM ANOTHER BASE STATION - A system includes a first base station of a first vendor configuration and a second base station of a second vendor configuration. A link is between the first and second base stations. The first base station is configured to receive at least one interference indicator message from the second base station, and schedule transmission of data based on the at least one interference indicator message. Scheduling the transmission of data includes determining whether to transmit the data using a current resource or to delay transmission of the data. | 09-15-2011 |
20110223925 | Antennae System - Embodiments of the invention relate to wireless communications networks, and more specifically to an antenna apparatus for cellular wireless systems. Increasing data capacity of cellular wireless systems places increasing demands on the capacity of the two way connection, known as backhaul, between a cellular base station and a telecommunications network such as the PSTN backhaul, since this is the connection that has to convey the wireless-originating traffic to its destination, often in an entirely different network. Known backhaul links include leased lines, microwave links, optical fibre links or radio resources for relaying backhaul traffic between base stations. The fixed line solutions are expensive to implement and maintain, while the radio solutions antenna configurations that are not ideal for relaying data between base stations. In embodiments of the invention, communication between base stations occurs in a first timeslot by use of a first antenna system and communication between a given base station and a user equipment occurs in a second timeslot using a second antenna system. The benefit of this method is that the first antenna system can be optimised for use in communication between base stations, whereas the second antenna system can be optimised for communication with user equipment which preferably occurs within the area of cellular wireless coverage of the sector served by the second antenna system. | 09-15-2011 |
20110223906 | Handover for Cellular Radio Systems - In a cellular wireless system, power thresholds used for determining whether or not to add or drop servers held in a set of servers, such as an active set, for serving a user equipment are determined on the basis of the motion of the respective user equipment. A lower threshold may be used with respect to the adding or dropping of a given server to or from a set of servers for serving a fast moving user equipment than would be used for the same server with respect to its adding or dropping to or from a set of servers for serving a slow moving user equipment, while maintaining a given quality of service. As a result, the average number of servers held in sets is reduced in a typical network that comprises a plurality of user equipments moving at different speeds, compared to a situation in which the threshold is set irrespective of the motion of a user equipment. A reduction in the average number of servers held in sets of servers for serving the user equipment has the benefit of reducing data traffic loading in a backhaul network, since the need to send duplicated data to each member of sets of servers is reduced and/or increasing network capacity, since the radio resource is used more efficiently because the proportion of servers sending duplicate data is reduced. | 09-15-2011 |
20110222852 | METHOD AND SYSTEM FOR CONFIGURING A CONNECTION-ORIENTED PACKET NETWORK OVER A WAVELENGTH DIVISION MULTIPLEXED OPTICAL NETWORK - A network planning tool and method for configuring a connection-oriented packet network over a WDM optical network without an optical control layer, such as a SONET/SDH layer. The optical network includes a plurality of optical fibers interconnected through nodes and the connection-oriented packet network, such an Ethernet network, MPLS network, or pseudowire network, includes two or more terminal devices. The method and tool function by building an association between the components of the physical layer, such as the optical fiber, and their geographic location or path. The connection-oriented packet network is configured by building multi-link trunks (MLTs) between terminal devices, where the MLTs are built by aggregating lightpaths that traverse distinctive geographic paths. The MLTs are planned and configured through aggregating lightpaths that traverse incongruent sets of photonic elements. A predetermined target for resiliency to physical failure events may determine the degree of congruence allowed between the sets of photonic elements associated with lightpaths in the same MLT. | 09-15-2011 |
20110222851 | METHOD TO TRANSFORM A DYNAMIC ANALOG OPTICAL NETWORK TO A DIGITAL REPRESENTATION - A system for enabling reconfiguration of a Wavelength Division Multiplexed (WDM) optical communications network. A plurality of channel transmitters are provided for generating respective optical signals within corresponding wavelength channels of the network. A broadband light source generates a broadband continuous wave light having a bandwidth corresponding to a channel band of the network. A wavelength selective switch includes a first switch port connected to receive optical signals from the channel transmitters. A second switch port is connected to receive the broadband continuous wave light from the broadband light source. The wavelength selective switch is configured to comb the broadband continuous wave light into a plurality of narrowband lights respectively corresponding with wavelength channels of the network. A common-OUT port of the wavelength selective switch outputs a WDM signal for transmission through a downstream fibre span of the network. The wavelength selective switch is controlled to switch optical signals from the first switch port to the common-OUT port as active wavelength channels, and further to switch narrowband lights corresponding to inactive channel wavelengths to the common-OUT port. Consequently, a spectral loading of the WDM signal is independent of the number of active wavelength channels. | 09-15-2011 |
20110222850 | SELF TEST OF A DUAL POLARIZATION TRANSMITTER - A method of testing a dual-polarization optical transmitter comprising a pair of polarization transmitters for respectively generating first and second polarization signals, and a polarization combiner for generating an optical signal composed of the first and second polarization signals with respective orthogonal polarization vectors. Each of the polarization transmitters is controlled to transmit respective polarization optical signals having predetermined characteristics. An output of the dual-polarization optical transmitter is tapped to obtain a first tap signal representative of the first polarization signal, and a second tap signal representative of the second polarization signal. A relative angle between respective polarization vectors of the tap signals is controlled, and the first and second tap signals combined to generate a combined light. A power level of the combined light is detected, and processed to obtain information about the performance of the dual polarization transmitter. | 09-15-2011 |
20110222637 | Method and Apparatus for Reducing the Contribution of Noise to Digitally Sampled Signals - A method and apparatus for reducing the contribution of noise to digitally sampled signals includes a statistical processor and a slope limiter. The statistical processor determines an average value (mean and/or standard deviation) of the filtered signal which is used to determine a slope limit corresponding to an expected maximum first derivative value of a target signal frequency. This slope limit is applied to constrain the output of an analog to digital converter, to prevent the output of the analog to digital converter from exceeding this maximum rate of rise or fall. By constraining the output of the analog to digital converter, it is possible to digitally sample analog signals without first utilizing an anti-aliasing filter, since the post processing of the digitally sampled signals limits the contribution of the higher frequency components of the signal to thereby enable a fully digital sampling and filtering circuit to be provided for receiving signals. | 09-15-2011 |
20110222504 | PREAMBLES IN OFDMA SYSTEM - The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs fine synchronization using the common sequence on the common preamble, and the resulting peaks will provide the locations of candidate base stations. The base station specific search is then performed in the vicinities of those peaks by using base station specific pseudo-noise sequences. With this two stage cell search, the searching window is drastically reduced. The preamble is matched to known values by a respective receiver to decode the signals and permit multiple signals to be transferred from the transmitter to the receiver. The preamble may comprise two parts, Preamble-I and Preamble-2, which may be used in different systems, including multioutput, multi-input (MIMO) systems. | 09-15-2011 |
20110221865 | Method and Apparatus for Providing a Video Representation of a Three Dimensional Computer-Generated Virtual Environment - A server process renders instances of a 3D virtual environment as video streams that may then be viewed on devices not sufficiently powerful to implement the rendering process natively or which do not have native rendering software installed. The server process is broken down into two steps: 3D rendering and video encoding. The 3D rendering step uses knowledge of the codec, target video frame rate, size, and bit rate from the video encoding step to render a version of the virtual environment at the correct frame rate, in the correct size, color space, and with the correct level of detail, so that the rendered virtual environment is optimized for encoding by the video encoding step. Likewise, the video encoding step uses knowledge of motion from the 3D rendering step in connection with motion estimation, macroblock size estimation, and frame type selection, to reduce the complexity of the video encoding process. | 09-15-2011 |
20110219128 | FAST VIRTUAL CONCATENATION SETUP - The invention is directed to optimizing setup of a VCAT connections using (largest) CCAT containers so as to minimize the number of cross-connection commands needed to enable data transfer. A system and method are provided for enhancing VCAT networks to include faster service restoration rates and faster connection setup times. One embodiment includes expanding available VCAT timeslots to include available CCAT timeslots. A routing and signaling control module alerts a source network element, internal network elements and a destination network element that the data transmission includes VCAT payloads rather than the expected CCAT payloads. By issuing this alert, the routing and signaling control module instructs an end-point monitoring function to overlook any mismatch between the expected CCAT rate and the received VCAT traffic. Otherwise, if the mismatch is not overlooked, then the end-point monitoring function will squelch the received VCAT traffic, which terminates the data communication | 09-08-2011 |
20110217970 | Transmission Method and Related Base Station - The invention relates to transmission from a base station to a receiver, the base station comprising first radiating means arranged for transmitting according to an antenna pattern with respect to the receiver and further comprising second radiating means arranged for transmitting according to the same antenna pattern as the first radiating means with respect to the receiver, the transmissions of the first and second radiating means being time shifted by a determined duration. | 09-08-2011 |
20110216808 | SCATTERED PILOT PATTERN AND CHANNEL ESTIMATION METHOD FOR MIMO-OFDM SYSTEMS - Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas. | 09-08-2011 |
20110216786 | OFDM SYSTEM AND METHOD EMPLOYING OFDM SYMBOLS WITH KNOWN OR INFORMATION-CONTAINING PREFIXES - Systems and methods for transmitting and receiving OFDM symbols are provided which enable the otherwise wasted transmission time normally used as a prefix for each OFDM symbol to contain useful information. At the receiver, the received signal is processed to convert received OFDM symbols from a linear convolution with the channel to a cyclic convolution. | 09-08-2011 |
20110216772 | Multi-Protocol Support Over Ethernet Packet-Switched Networks - Described are methods and communications network for carrying pseudowires over packet-switched network. A communication network includes a packet-switched network (PSN), a first provider edge (PE) device in communication with a second PE device through the PSN, and a pseudowire (PW) established between the PE devices for emulating a service across the PSN. The PW has a Virtual Circuit Connection Verification (VCCV) control channel that carries an Ethernet Operations, Administration, and Maintenance (OAM) message. In some embodiments, various data plane encapsulation formats enable a PW to emulate an Ethernet or a non-Ethernet service over an Ethernet PSN. Each encapsulation format includes an Ethernet tunnel header and a PW header that encapsulates an Ethernet or non-Ethernet payload. | 09-08-2011 |
20110216690 | RELAYING SYSTEM AND METHOD WITH PARTNER RELAYS AND SELECTIVE TRANSMISSION - Partner relay systems and methods are provided in which relaying is performed by a pair of partner relays. Signals received from a base station are translated by a first of the pair of partner relays to a different transmission resource for communication between the pair of partner relays, and then upon reception by a second of the pair of partner relays, the signal is translated back to the original transmission resource and re-transmitted towards the receiver. | 09-08-2011 |
20110213891 | INTEGRATED HOME SERVICE NETWORK - The present invention provides a centralized home controller that is used to coordinate a plurality of associated packet communication clients. The home controller provides a centralized and unified control and messaging system for the various packet communication clients. The home controller also allows the packet communication clients to establish and control packet sessions among the associated packet communication clients, as well as between any one of the packet communication clients and remote clients. The packet communication clients are provided in consumer electronics devices, and the associated packet sessions support data, voice, audio, or video content. In one embodiment, the home controller acts as a proxy for the various communications between the packet communication clients. | 09-01-2011 |
20110212740 | POWER MANAGEMENT AND DISTRIBUTED SCHEDULING FOR UPLINK TRANSMISSIONS IN WIRELESS SYSTEMS - To schedule uplink transmission time slots for a collection of mobile communication devices, a set of base station target interference patterns is associated with base stations. A time slot target interference pattern is assigned for each time slot and it repeats after several time slots. The time slot target interference pattern in a given time slot specifies the interference allowed by each time slot to a given base station by any single mobile. A priority index may be determined for each time slot for each mobile associated with the particular base station. The priority index may be based, in part, on a determined correlation between the time-slot target interference patterns and a potential interference profile of a mobile to which a time slot is to be allocated. A mobile's throughput requirement, the throughput already received over a specified past duration, the system fairness requirement, as well as the amount of data available for transmission are also used for evaluating the priority index. | 09-01-2011 |
20110211462 | METHODS AND SYSTEMS FOR SCHEDULING IN A VIRTUAL MIMO COMMUNICATION ENVIRONMENT - A system and method for scheduling cooperative uplink transmissions a virtual multiple input multiple output (MIMO) wireless communication environment are provided. More specifically, both random and channel aware orthogonal scheduling techniques for identifying a sub-set of N mobile terminals to provide cooperative uplink transmissions for each transmit time interval are provided. | 09-01-2011 |
20110208813 | Personal status communications manager - A user status may be updated at one of a plurality of network entities associated with a user. Through communication between the network entity on which the update has been made and a central server, an indication of the status update may be transmitted, by the central server, to the other network entities associated with the user. | 08-25-2011 |
20110206018 | PROVIDING ACKNOWLEDGEMENT INFORMATION BY A WIRELESS DEVICE - In general, to provide acknowledgment information by a first wireless device, the first wireless device sends repeated instances of acknowledgment information in respective first and second frame structures, in response to receipt of first information from a second wireless devalue. In addition, the first wireless device also sends further acknowledgment information in the second frame structure that is responsive to second information received from the second wireless device. | 08-25-2011 |
20110206007 | Active Set Management Enhancement for Reliable Soft Handoff in 1XEV-DO System - A method and system for connection management in a wireless data network, such as a 1×EV-DO network adds connections to new network sectors upon receipt of a connection request from an active terminal, but removes data connections that the active terminal requests to be dropped only after confirmation from the active terminal that a channel allocation message has been received and applied. The active network maintains an active set of connections that is at least as large as the active set maintained by the active terminal and does not initiate a connection termination if no confirmation of the channel allocation message is received. This allows for a reduction in the number of dropped connections. | 08-25-2011 |
20110201374 | SYSTEM AND METHOD FOR PEER-TO-PEER COMMUNICATION IN CELLULAR SYSTEMS - Systems and methods are provided for delivering both PMP communications, for example standard cellular communications via a base station, and also delivering P2P communications, for example, communications between two mobile stations, using the same spectral resources for both types of communication. | 08-18-2011 |
20110200029 | WIRELESS COMMUNICATION CLUSTERING METHOD AND SYSTEM FOR COORDINATED MULTI-POINT TRANSMISSION AND RECEPTION - A method and system for identifying cell clusters within a coordinated multiple point wireless transmission network in order to reduce scheduling complexity while optimizing throughout and performance. The network includes a total number of cells served by corresponding base stations. The BSC divides the entire network of cells into clusters of cells and forwards this clustering information to all mobile devices. A cluster of cell candidates is a subset of the total number of cells within the network. The mobile device then provides to a base station controller the identity of a cluster of preferred cells selected from the cluster of cell candidates. The base station controller selects at least one base station located within the cluster of preferred cells to establish communication with the mobile device. A wireless connection is then established between the selected at least one base station and the mobile device. | 08-18-2011 |
20110199996 | METHOD AND SYSTEM FOR ALLOCATING MEDIA ACCESS CONTROL LAYER RESOURCES IN A WIRELESS COMMUNICATION ENVIRONMENT - A method and system for allocating shareable wireless transmission resources. A resource pool is established. The resource pool is divided into a plurality of physical layer allocation units usable for wirelessly transmitting control information and traffic data. The allocation units are assigned at the media access control layer for the wireless transmission of the control information and traffic data. The system and method of the present invention also allows mobile stations to be dynamically grouped into multicast groupings to reduce system overhead resource requirements. | 08-18-2011 |
20110199982 | PROCESSING INFORMATION BLOCKS FOR WIRELESS TRANSMISSION - In general, according to an embodiment, a wireless transmitter includes a plurality of coding and modulation modules to apply corresponding coding and modulation algorithms to input information blocks. A discrete Fourier transform (DFT) precoder applies DFT processing to outputs of the coding and modulation modules, and an inverse fast Fourier transform (IFFT) module receives a DFT output of the DFT precoder, which is mapped to different subcarriers according to the resource allocation indicated by the base station, and applies IFFT processing to the DFT output. An output processing stage produces output signals based on the output of the IFFT module to transmit wirelessly to a wireless receiver. In a different implementation, the outputs of the coding and modulation modules can be provided to an IFFT module to produce IFFT-processed output information. | 08-18-2011 |
20110191819 | Diameter Signaling for Mobile IPv4 - The invention consists of a new registration and authentication protocol for between a Mobile Node and a Home Agent. The new protocol uses a novel messaging sequence to request registration, authentication and authorization of the Mobile Node when it is located on a foreign network, and the novel protocol will avoid some of the standard registration and authentication protocol messages in order to eliminate the problems associated with re-transmission errors. | 08-04-2011 |
20110191421 | GENERIC INFORMATION ELEMENT - A computer data signal embodied in a non-transitory computer-readable medium is described. In one embodiment, the computer data signal includes a generic element identifier, a plurality of task-specific data, a variable length identifier and a multi-use data type identifier. The generic element identifier is configurable to identify an information element containing the generic element identifier as a generic information element. The variable length identifier is configurable to indicate a number of the plurality of task-specific data. The multi-use data type identifier is configurable to indicate a type of the plurality of task-specific data. | 08-04-2011 |
20110188865 | METHOD FOR RAPID DETERMINATION OF LOWEST COST WAVELENGTH ROUTES THROUGH A PHOTONIC NETWORK BASED ON PRE-VALIDATED PATHS - A method of setting up an end-to end connection between two end-points in an optical network. A plurality of validated paths in the network are defined. Each validated path extends between a respective pair of wavelength termination points and has requisite physical resources to carry signal traffic between its pair of wavelength termination points. A graph of the network is generated. An edge of the graph corresponds with a respective validated path, and a vertex of the of the graph corresponds with at least one wavelength termination point. The graph is analysed to compute an end-to-end path between two vertices respectively corresponding with end-points of the end-to-end connection, and the end-to-end connection set up using the computed path. | 08-04-2011 |
20110188861 | REDUCING OPTICAL SERVICE CHANNEL INTERFERENCE IN PHASE MODULATED WAVELENGTH DIVISION MULTIPLEXED (WDM) COMMUNICATION SYSTEMS - A system for transmitting a plurality of data channels and an optical service channel through an optical fiber link of a Wavelength Division Multiplexed (WDM) optical communications system. The system comprises a first transmitter at a first end of the optical fiber link, for transmitting the data channels as a wavelength division multiplexed optical signal through the optical fiber link in a first direction. A second transmitter is connected at a second end of the optical fiber link, for transmitting the optical service channel through the optical fiber link in a second direction opposite to the first direction. | 08-04-2011 |
20110188512 | CROSS-CONNECT USING ETHERNET MULTIPLEXORS FOR A SIMPLE METRO ETHERNET NETWORK - A metro area network is provided that includes edge and core multiplexors each having a plurality of line ports and one or more uplink ports, a transport network carrying multiplexed traffic between the edge and core multiplexors. In a hard cross connect implementation utilizing source port tagging, a cross-connect device coupled to the core multiplexors provisions or maps communications path between the core multiplexors thereby providing preselected connectivity/mapping of two or more line ports of any of the edge multiplexors. In a soft cross connect implementation utilizing destination port tagging, a cross-connect device includes additional cross-connect multiplexors and functionality to control the destination port tagging performed in the edge, core and cross connect multiplexors thereby provisioning or mapping the desired communications path(s) between various endpoints. | 08-04-2011 |
20110182307 | TRACKING INJECTION SEEDING POWER BASED ON BACK FACET MONITORING (BFM) OF AN INJECTION SEEDED LASER - A method of estimating an injection power of seed light injected into an injection-seeded transmitter. A back face monitoring (BFM) response of the injection-seeded transmitter is determined, and data representative of the BFM response stored in a memory. During run-time, a controller of the injection-seeded transmitter, detects a temperature of the injection-seeded transmitter and an instantaneous BFM current. BFM response data is obtained from the memory based on the detected temperature, and the seed light injection power estimated based on the obtained data and the detected instantaneous BFM current. | 07-28-2011 |
20110182231 | METHODS AND SYSTEMS FOR A WIRELESS ROUTING ARCHITECTURE AND PROTOCOL - The present invention provides a method for generating routing paths in a multi-hop network. The multi-hop network includes a base station, at least one relay station, and at least one non-relay mobile station. The routing paths are paths between the base station and the at least one non-relay mobile station via the at least one relay station. The base station broadcasts a path discovery message (PDM) including a path list with a starting point of the path list being the base station. Each of the relay stations receives the PDM and updates the PDM by adding their own respective node identifier to the path list and broadcasting the updated PDM. The PDMs eventually reach the non-relay mobile station. The non-relay mobile stations reply to the base station by sending the base station the updated path list between the base station and the non-relay mobile station. In some embodiments the base station or the at least one non-relay mobile station acting as a source node sends a dynamic service (DSx) message including an end-to-end path list to an end of path destination. The relay stations use the path list to forward the message between the source node and the end of path destination. In some implementations the multi-hop network operates in a manner that is consistent with any one of: IEEE 802.16, IEEE 802.16d, and IEEE 802.16e. | 07-28-2011 |
20110182184 | METHOD AND APPARATUS FOR INCREASING THE SCALABILITY OF THE ETHERNET OAM - After statically provisioned paths are created through an Ethernet network, trunks may be created to extend along those paths. The trunks extend between pairs of NNI interfaces on either end of the path, and Ethernet OAM may be run over the trunks to detect connectivity along the paths. Service instances and service groups may be provisioned over particular paths through the network. Each service instance/service group is associated with a trunk and the Ethernet OAM service on the trunk may be used to provide Ethernet connectivity OAM for the service instance/service group. Upon detection of a failure on the trunk, the service instances/service groups associated with the trunk may be caused to failover to an alternate path through the network. Thus, a single Ethernet OAM service instance may be used to provide connectivity verification so that connectivity detection does not need to be performed on each individual service instances/service group. | 07-28-2011 |
20110176638 | Method and Apparatus for Adjusting a Symbol Decision Threshold at a Receiver in a Communication Network - A method and apparatus for adjusting a symbol decision threshold at a receiver in a communication network enables the receiver to be adapted to more correctly receive symbols as transmitted by a transmitter. In one embodiment, a received bit imbalance is detected by a receiver prior to error correction and after error correction to determine whether an error component of the received signal contains larger numbers of ones or larger numbers of zeros. Where the transmitter scrambles the signal prior to transmission, the receiver will also scramble the signal after error correction and prior to counting the number of zeros or ones. Any imbalance between the number of transmitted and received ones or zeros is used as feedback to adjust threshold values used by detectors to fine tune the manner in which the receiver interprets incoming signals. | 07-21-2011 |
20110176506 | RANDOM ACCESS CHANNEL PROTOCOL - The present invention provides an improved random access channel protocol, wherein different user elements may be associated with different priority levels. Based on relative priority, the user elements may have different probabilities for deciding when to retransmit a previously transmitted packet upon receiving information from an access point indicating that the packet needs to be retransmitted. A buffer is provided for storing a packet to transmit, and the buffer is associated with a stack counter, which is incremented or decremented to or from a nominal value to determine when to transmit or retransmit the packet stored in the buffer. Based on the relative priority, feedback information from the access point may cause the stack counter for a packet needing to be retransmitted to stay at the nominal value, wherein retransmission will occur at the next available time slot, or it may increase the stack counter by one or more levels. | 07-21-2011 |
20110169577 | SYSTEM AND METHOD FOR BUILT IN SELF TEST FOR TIMING MODULE HOLDOVER - Embodiments of the invention include a method for use in a device having a local oscillator. The method includes performing, for the local oscillator that is disciplined by an external reference signal, while locked to the external reference signal, training at least two mathematical models of the oscillator to determine a predicted correction signal for each mathematical model based at least in part on a correction signal that is a function of the external reference signal and which is used to discipline drift in the oscillator. The method also includes selecting a mathematical model of the at least two mathematical models that results in a smallest time error when disciplining the oscillator to use when the external reference signal is unavailable and an alternative correction signal is to be used to discipline drift in the oscillator. The method further includes testing the selected mathematical model using a sampled version of the correction signal such that the selected mathematical model can be used without the need for a testing duration that is in addition to a period of time used for the training. | 07-14-2011 |
20110167155 | BREAK BEFORE MAKE FORWARDING INFORMATION BASE (FIB) POPULATION FOR MULTICAST - A method of installing forwarding state in a link state protocol controlled network node having a topology database representing a known topology of the network, and at least two ports for communication with corresponding peers of the network node. A unicast path is computed from the node to a second node in the network, using the topology database, and unicast forwarding state associated with the computed unicast path installed in a filtering database (FDB) of the node. Multicast forwarding state is removed for multicast trees originating at the second node if an unsafe condition is detected. Subsequently, a “safe” indication signal is advertised to each of the peers of the network node. The “safe” indication signal comprises a digest of the topology database. A multicast path is then computed from the network node to at least one destination node of a multicast tree originating at the second node. Finally, multicast forwarding state associated with the computed multicast path is installed in the filtering database (FDB) of the network node, when predetermined safe condition is satisfied. | 07-07-2011 |
20110164611 | AUTOMATED ATTENDANT MULTIMEDIA SESSION - An automated attendant system is made multimedia capable by adding a combined user agent to the automated attendant. A search is done to verify that the caller to the automated attendant has combined user agent capabilities. If so, the caller receives multimedia content from the automated attendant's combined user agent so that the content may be presented on the caller's computer to assist the caller in navigating through the automated attendant's menus and options. Upon selection of a desired connection from the menus and options, the automated attendant's combined user agent helps the caller be connected by voice to the selected connection. | 07-07-2011 |
20110164502 | ETHERNET OAM PERFORMANCE MANAGEMENT - Maintenance entities may be defined between customer and provider flow points to allow performance management to take place on an Ethernet network. The maintenance entities may be defined for access link, intra-domain, and inter-domain, and may be defined on a link or service basis. The maintenance entities may be used to monitor performance within a network or across networks, and may be used to monitor various performance parameters, such as frame loss, frame delay, frame delay variation, availability, errored frame seconds, service status, frame throughput, the number of frames transmitted, received or dropped, the status of a loopback interface, the amount of time a service has been unavailable, and many other parameters. Several management mechanisms may be used, and the measurements may be collected using a solicited collection method, in which a response is required and collected, or an unsolicited collection method in which a response is not required. | 07-07-2011 |
20110158179 | NETWORK-AWARE ADAPTER FOR APPLICATIONS - Streams of data traffic from various applications may be handled by a network-aware adapter module as part of a greater platform for filtering communicating the streams to intelligent network components. A distinguishing factor associated with a given data stream may be determined and used as a basis for selecting a QoS policy setting for the given data stream. The selected QoS policy setting may then be signaled to a media access control layer to take advantage of the QoS function of the embedded underlying active media type that is active and optimal (both from technical and business perspective) to carry out the communication for the application. | 06-30-2011 |
20110158156 | METHOD AND SYSTEM USING RELAYS WITH AGGREGATED SPECTRUM - International Mobile Telecommunications (IMT) Advanced technology, also known as 4th Generation (4G) targets to support up to 100 MHz BW. LTE currently supports single carrier bandwidths of up to 20 MHz. The present application describes a multi-carrier approach in which some embodiments of the invention provide a simple solution of aggregating multiple single carrier bandwidths to obtain a wider bandwidth (>20 MHz). Such an approach may extend Long Term Evolution (LTE) bandwidth to greater than that provided by a single carrier, yet maintain full backward compatibility with technologies that predate 4G technology and utilize smaller, single carrier bandwidths. More generally, embodiments of the invention can apply to other communication standards than only LTE. | 06-30-2011 |
20110153378 | Methods and Systems for Managing Customer Contacts in a Contact Center - A computer-implemented method of reserving resources for a customer contacting a contact center. The method includes the steps of identifying the customer associated with a contact received at the contact center, accessing a customer profile to determine at least one non-agent resource to be associated with the contact based on the customer profile; reserving the non-agent resource for the contact; and allocating the non-agent resource to the contact. | 06-23-2011 |
20110150505 | ZERO MEAN CARRIER RECOVERY - A method of data symbol recovery in a coherent receiver of an optical communications system. Two or more SYNC bursts, having a known symbol sequence and periodicity, are processed to derive an estimate of a frequency offset Δf between a transmit laser and a Local Oscillator (LO) of the receiver. A phase rotation κ(n) is computed based on the estimate of the frequency offset Δf, and applied to a plurality of data symbol estimates to generate corresponding rotated symbol estimates. The rotated symbol estimates are then filtered to generate corresponding decision values of each data symbol. | 06-23-2011 |
20110149998 | METHOD AND SYSTEM FOR TIMESTAMP INCLUSION IN VIRTUAL LOCAL AREA NETWORK TAG - A method, system and apparatus time-stamp a data frame. The data frame includes a type field and data for transmission to a communication network. The data frame is received and a reception time for the data frame is determined. The value of the type field is determined. If the value of the type field indicates the data frame is a time-stamped frame, a timestamp field is inserted in the data frame. The timestamp field indicates the reception time. | 06-23-2011 |
20110149824 | SYSTEM AND METHOD FOR SPATIAL MULTIPLEXING-BASED OFDM BROADCAST/MULTICAST TRANSMISSION - A method of OFDM transmission/reception comprising: transmitting broadcast/multicast signals on a first antenna and unicast signals on a second antenna; segregating broadcast/multicast sub-channelization from unicast channels sub-channelization based on FDM (frequency division multiplexing)/TDM (time division multiplexing) sub-channelization. | 06-23-2011 |
20110145067 | Associative Search Engine - This invention relates to an advertisement machine which provides advertisements to a user searching for desired information within a data network. The machine receives, from a user, a search request including a search argument corresponding to the desired information and searches, based upon the received search argument, a first database having data network related information to generate search results. It also correlating the received search argument to a particular advertisement in a second database having advertisement related information. The search results together with the particular advertisement are provided by the machine to the user. | 06-16-2011 |
20110142457 | INTEGRATED TRANSMIT AND RECEIVE MODULES FOR A COHERENT OPTICAL TRANSMISSION SYSTEM - An integrated optical package includes a package mount including a plurality of electrical connectors. A digital electronic integrated circuit (IC) is electrically connected to the electrical connectors of the package mount via a first set of solder balls or bumps. An optical IC includes optical waveguide traces and one or more electrical contact points for electrically coupling the optical IC to the digital electronic IC via a second set of solder balls or bumps. One or more optical fibre pig-tails optically coupled to the optical waveguide traces of the optical IC. | 06-16-2011 |
20110128955 | EMERGENCY SERVICES FOR PACKET NETWORKS - The present invention provides a technique for facilitating emergency services via packet networks. Emergency service providers will implement emergency proxies to ensure that proper call setup requests for emergency services are forwarded to the appropriate entities, even if those entities are in overload conditions. The emergency proxies may authenticate and filter call setup requests to ensure that only proper call setup requests are forwarded to help prevent such overload conditions. The emergency proxies may operate solely in a packet network, as well as at the interface between a packet network and a circuit-switched network to assist in call setup requests originating from either the packet network or the circuit-switched network. | 06-02-2011 |
20110126016 | SYSTEM AND METHOD FOR SECURE WIRELESS MULTI-HOP NETWORK FORMATION - The present invention provides methods and devices for a security architecture for use in wireless multi-hop networks. A method for implementing pair-wise encryption key establishment, network node authentication and determining tunnel encryption keys is provided in a following manner. In a multi-hop wireless network including a plurality of network nodes, pair-wise security is established between pairs of neighbouring network nodes of the plurality of network nodes. For example, pair-wise security is established in the form of temporal pair-wise encryption keys. Following establishment of pair-wise security between pairs of neighbouring network nodes, for a pair of network nodes that are not neighbours, tunnel security is established between the pair of network nodes using tunnel encryption keys derived by the pair of network nodes on an ad hoc basis. The tunnel encryption keys are used to form the connection between non-neighbouring network nodes so as to avoid the hop-by-hop encryption/decryption used in conventional multi-hop wireless systems. | 05-26-2011 |
20110116521 | TRACKING INJECTION SEEDING POWER BASED ON BACK FACET MONITORING (BFM) OF AN INJECTION SEEDED LASER - A method of estimating an injection power of seed light injected into an injection-seeded transmitter. A back face monitoring (BFM) response of the injection-seeded transmitter is determined, and data representative of the BFM response stored in a memory. During run-time, a controller of the injection-seeded transmitter, detects a temperature of the injection-seeded transmitter and an instantaneous BFM current. BFM response data is obtained from the memory based on the detected temperature, and the seed light injection power estimated based on the obtained data and the detected instantaneous BFM current. | 05-19-2011 |
20110116360 | OFDM SYSTEM AND METHOD EMPLOYING OFDM SYMBOLS WITH KNOWN OR INFORMATION-CONTAINING PREFIXES - Systems and methods for transmitting and receiving OFDM symbols are provided which enable the otherwise wasted transmission time normally used as a prefix for each OFDM symbol to contain useful information. At the receiver, the received signal is processed to convert received OFDM symbols from a linear convolution with the channel to a cyclic convolution. | 05-19-2011 |
20110111725 | AUTOMATIC REMOTE COMMUNICATION USING NETWORK TELEPHONY - The present invention is a method and apparatus to provide remote communication using network telephony. In a transmitter, an activation message is decoded to generate an activation command. The activation message is sent from an activator via a communication medium in response to a telephony call. An information message is transmitted, responsive to the activation command, to a receiver using a communication protocol. In a receiver, an activation message is decoded to generate an activation command. The activation message is sent in response to a telephone call. An information message is received, responsive to the activation command. The information message is sent from a transmitter according to a communication protocol via a communication medium. | 05-12-2011 |
20110107177 | Low Density Parity Check (LDPC) Code - Low density parity check code (LDPC) base parity check matrices and the method for use thereof in communication systems. The method of expanding the base check parity matrix is described. Examples of expanded LDPC codes with different code lengths and expansion factors are also shown. | 05-05-2011 |
20110103795 | SOFT DECODING OF DATA IN A COHERENT OPTICAL RECEIVER - In a coherent optical receiver receiving a polarization multiplexed optical signal through an optical communications network, a method of compensating noise due to polarization dependent loss (PDL). A Least Mean Squares (LMS) compensation block processes sample streams of the received optical signal to generate symbol estimates of symbols modulated onto each transmitted polarization of the optical signal. A decorrelation block de-correlates noise in the respective symbol estimates of each transmitted polarization and generating a set of decorrelated coordinate signals. A maximum likelihood estimator soft decodes the de-correlated coordinate signals generated by the decorrelation block. | 05-05-2011 |
20110096751 | SOFT HANDOFF FOR OFDM - The present invention relates to soft handoffs in an OFDM system. Each mobile terminal measures pilot signal strengths of transmissions from adjacent base stations. If the pilot signal strength for a base station exceeds the defined threshold, that base station is added to an active set list. Each mobile terminal notifies the base stations of their active set lists. By providing the set list to the base station controller and the servicing base station, the mobile terminal identifies the sole servicing base station or triggers a soft handoff mode when multiple base stations appear on the active set list. The soft handoff mode uses a combination of scheduling and space-time coding to affect efficient and reliable handoffs. | 04-28-2011 |
20110096663 | Method of Providing Bearer Specific Information for Wireless Networks - The Packet Control Function (PCF) has limited knowledge about the nature of the packet data arriving on a bearer path connected via the Packet Data Serving Node (PDSN), and cannot make an intelligent decision on its own as to how best to handle the packet data. Thus, the PDSN provides bearer-specific information by classifying the priority of received packet data; encapsulating the packet data within the payload of a Generic Routing Encapsulation (GRE) frame; and for high priority packet data i) setting a protocol type field in the header of the GRE frame indicating said packet includes an attribute field; and ii) adding an attribute field to the payload of the GRE packet which provides an indication of said high priority data. Furthermore, the PCF can send an A- | 04-28-2011 |
20110092243 | CONTROLLING ALLOCATION OF A PORTION OF A SHARED CHANNEL TO USE FOR CONTROL INFORMATION - To control allocation of a portion of a shared channel to use for control information, a base station determines an amount of resource elements of the shared channel to use for the control information in place of traffic data. The base station sends, to a mobile station, an indication relating to an offset parameter, where the indication is provided to allow the mobile station to compute a value for the offset parameter such that the mobile station can determine the amount of the resource elements of the shared channel to allocate for the control information. | 04-21-2011 |
20110090851 | Method and System for Transmission of Fragmented Packets on a Packet-Based Communication Network - The present invention provides a method and system for the identification and discovery of the lowest maximum transmission unit (MTU) size for transmission packets on some or all of the transmission path nodes. Different methods and protocols are described in the present patent application to support the identification and discovery of the lowest maximum transmission unit (MTU) size for fragmented transmission packets. | 04-21-2011 |
20110089924 | DUAL VOLTAGE HOT SWAP MODULE POWER CONTROL - A module hot swap circuit includes a low voltage-drop rectifier adapted to receive either positive or negative voltages of different absolute values. The rectifier is coupled to a power manager that provides dual startup/shutdown voltage thresholds and inrush current limiting. A detector prevents reverse current flow allowing the module to hold up during input voltage drop-outs. | 04-21-2011 |
20110085544 | Method and Apparatus for Providing a Web Page to a Call Member - One problem with web-based information is that it is typically presented without being personalised or tailored to fit a particular user's needs and requirements. Another problem relates to calls such as telephone calls, video calls or other multimedia calls made between two or more call members. Here it is often required to provide detailed information during the call. By storing a plurality of web pages and associating each of those web pages with information about one or more potential calls, it is possible to select one of those web pages for provision to a particular call member. For example, a user may store a web page for provision to family members, another for customers, and another for new enquiries. Information about a call is obtained and used to select an appropriate one of the stored web pages. This selected web page is then provided to the call member which is for example a wireless terminal with a web browser arranged to display the web page. The web pages may be stored on a web server or alternatively on the terminal used by the call member to take part in the call. | 04-14-2011 |
20110081943 | System and Method for Supporting Multi-User Antenna Beamforming in a Cellular Network - The present invention is a method and system for supporting a beamforming antenna system in a multiple user mobile broadband communication network including a process for setting and adjusting the magnitude and phase of the signal to user equipment from each antenna. Namely, the present invention supports the communication of power signal values or levels to user equipment in a manner that keeps pace with the rapid variations of the power levels that occur in the dynamic scheduling of transmissions on the cell site. The present invention satisfies this need for an improved signal strength signaling to user equipment for the situation where multiple users are located on the cell site. | 04-07-2011 |
20110080836 | Method and Apparatus for Providing Bypass Connectivity Between Routers - Forwarding Adjacencies (FAs) can be set up between IP/MPLS routers without requiring a Routing Adjacency (RA) to be brought up for every FA. This enables increased bypass connectivity to be established between end-point routers in the IP/MPLS network without attendant additional processing associated with having dedicated RA for each FA. Where it is possible to modify the end-point routers, the physical ports may be configured to support stand-alone FAs. A configured FA at a physical port is then associated with an IP address of a remote end-point router and a connection within the bypass technology. OAM is used to verify connectivity and configuration across the FA. Alternatively, an emulated Ethernet LAN segment may be used for IP traffic to enable full mesh connectivity to be provided by the bypass technology while requiring only one or a small number of RAs to be implemented at each end-point router. | 04-07-2011 |
20110077755 | METHOD AND SYSTEM FOR REPLAYING A PORTION OF A MULTI-PARTY AUDIO INTERACTION - A method for replaying a portion of a multi-party audio interaction to a participant of the audio interaction. A participant of a multi-party audio interaction, such as a conference call or a gaming session, can request a replay of a portion of the audio interaction. A conference processor can provide an outgoing audio stream to the participant that includes a replay audio stream that includes the requested replayed portion of the multi-party audio interaction and a real-time audio stream that includes the ongoing multi-party audio interaction. The replay audio stream can be aurally positioned at an aural position that is different from the real-time audio stream to enhance the participant's ability to distinguish between the two audio streams. | 03-31-2011 |
20110075651 | SYSTEMS AND METHODS FOR SC-FDMA TRANSMISSION DIVERSITY - The present application provides methods, devices and transmitters that mitigate increases in peak to average power ratio (PAPR) from transmission diversity in a single carrier frequency division multiple access (SC-FDMA) modulated uplink A PAPR preserving precode matrix hopping method that utilizes cyclic shift delays is provided, as well as a sub-band based transmit diversity scheme. The present application also provides methods, devices and transmitters that relax the scheduling restrictions associated with uplink scheduling in the LTE standard. | 03-31-2011 |
20110069662 | CONTEXT TRANSFER SYSTEMS AND METHODS IN SUPPORT OF MOBILITY - A broad aspect of the invention provides a method of providing mobility support for a mobile node's traffic. The method involves maintaining context information for the mobile node on each of a first plurality of network nodes carrying the traffic; and proactively transferring and maintaining at least a portion of the context information in a plurality of network nodes which are not carrying the traffic, but which are candidates for carrying the traffic due to mobility of the mobile node. The method typically further involves defining and maintaining a definition of the second plurality of network nodes. In one embodiment of the invention, this involves adding a particular network node to the second plurality when the particular network node becomes a candidate for carrying the traffic, removing a particular network node from the second plurality when the particular network node is no longer a candidate for carrying the traffic. Furthermore, for each node in the second plurality of network nodes, a definition is made of a node in the first plurality of network nodes from which to obtain the context information. | 03-24-2011 |
20110069643 | METHOD AND SYSTEM FOR CONTROLLING AUDIO IN A COLLABORATION ENVIRONMENT - A method and system for designating an aural position of an audio stream in a collaboration environment. A plurality of icons corresponding to participants are displayed in a user interface. A moderator may move the icons from a first position in the user interface to a second position in the user interface. Upon moving an icon from a first position to a second position, an aural position identifier corresponding to the second position is generated and sent to a conference processor. The conference processor uses the aural position identifier to generate an outgoing audio stream that aurally positions the audio stream generated by the participant corresponding to the icon at the aural position. The outgoing audio stream is provided to the moderator, who uses a multi-channel capable device to perceive the audio stream at the designated aural position. | 03-24-2011 |
20110069641 | Estimating User Device Location in a Wireless Network - A method of estimating user location involving collecting data from the access points in the network. The data can then be used to define a relationship, for example the loss of power experienced by a transmitted signal, between the access points. The relationship can be stored within a matrix, database or any other suitable storage method that can be referenced to determine the position of a user device within the network and correlated with corresponding measurements from a user device to determine the location of the user device within the network. | 03-24-2011 |
20110065448 | System and Method for Supporting Antenna Beamforming in a Cellular Network - The present invention is a method and system for supporting a beamfonming antenna system in a mobile broadband communication network with an improved beam pattern, beam sweep pattern, pilot channel design with feedback and reporting rules, and control signaling design. Specifically, the improved beam pattern includes a method of supporting wireless communications in a wireless network forming at least two spatial beams within a cell segment where the at least two spatial beams are associated with different power levels, and separately, where at least two spatial beams can be moved across the cell segment according to a unique sweep pattern. The pilot channel design improves network bandwidth performance and improve user mobility tracking. Feedback and reporting rules can be established using a particular field designator, CQI, in the preferred embodiment. | 03-17-2011 |
20110064410 | COLOR FREE WDM PON BASED ON BROADBAND OPTICAL TRANSMITTERS - A Wavelength Division Multiplexed Passive Optical Network (WDM-PON) includes a plurality of broadband light sources, each broadband light source being connected to receive a respective data signal and generating a corresponding modulated broadband optical signal. An Array Waveguide Grating (AWG) is connected for receiving each modulated broadband optical signal through a respective branch port and for generating a filtered broadband signal. The AWG implements a filter function comprising a respective pass-band associated with each branch port such that the filtered broadband signal exhibits a respective intensity peak associated with each pass-band. Each intensity peak is modulated with data from a respective one of the broadband light sources. A bandwidth of the respective modulated broadband optical signal generated by each broadband light source is at least equal to the width of a channel-band of the AWG. | 03-17-2011 |
20110064054 | Method and System for Maintaining Multiple PDN Network Connection During Inter-Technology Handover in Idle Mode - The present invention provides a method and system for supporting an optimized an idle mode handoff of user equipment from a 3GPP (EUTRAN) to a non-3GPP system (HRPD, cdma2000) where the user equipment washes to maintain connectivity with multiple PDN networks. Namely, during an idle mode registration of the user equipment with the non-3GPP system, the user equipment will provide an indication to the access node on the non-3GPP system so that the access point in that non-3GPP system contacts the appropriate entity (HSS or AAA) on the home network for the user equipment to download the addresses of the multiple PDN gateway addresses that are currently in use by the user equipment. This indication to the non-3GPP access node, the contact message from the access node to the home network, and the response from the home network to the access node on the non-3GPP system are novel features that are not shown in the prior art, and provide the access node with sufficient information to maintain multiple PDN connectivity to the user equipment during an idle mode handover. | 03-17-2011 |
20110058662 | METHOD AND SYSTEM FOR AURALLY POSITIONING VOICE SIGNALS IN A CONTACT CENTER ENVIRONMENT - A contact center media server for aurally positioning participants of a contact center transaction at aural positions designated by a contact center agent. The media server includes a communications interface coupled to a controller and adapted to interface with a plurality of voice paths. Each of the voice paths is associated with one of a plurality of participants in a contact center transaction. A three-dimensional (3D) spatializer engine is coupled to the controller and can receive incoming voice signals received over voice paths and corresponding aural position data. The 3D spatializer engine processes the incoming voice signals and generates outgoing voice signals that include signal characteristics that aurally position the first outgoing voice signals at an aural position with respect to the contact center agent indicated by the aural position data. | 03-10-2011 |
20110058483 | Forwarding Plane Data Communications Channel for Ethernet Transport Networks - Described is a process and system for providing an extensible forwarding plane data communications channel adapted to selectively support operations, administration and maintenance (OAM) activity within one or more different domains of an Ethernet transport network. The data communication channel is established using Ethernet protocol data units forwarded within the forwarding plane, between network elements. The Ethernet protocol data units can be Ethernet OAM frames modified to include an OpCode indicative of a maintenance communication channel. The OAM frames are generated at a selected one of the network elements (source), forwarded along the same network path as the Ethernet frames, and terminate at another network element (destination) associated with a maintenance level identified within the OAM frame. The source and destination network elements can reside on a domain boundary using the Ethernet OAM frames flowing therebetween to relay maintenance communications channel messages. | 03-10-2011 |
20110055900 | DISTRIBUTED AUTHENTICATION, AUTHORIZATION AND ACCOUNTING - In some embodiments, computer systems, storage mediums, and methods are provided for controlling a connecting device's access to a plurality of computer networks. In other embodiments, the provided computer systems, storage mediums, and methods may provide for authentication, authorization, and accounting of connecting devices connecting to a plurality of computer networks. In other embodiments, the provided computer systems, storage mediums, and methods may provide for the distribution of authentication routing data and authorization policies among a plurality of computer networks. In yet other embodiments, the provided computer systems, storage mediums, and methods may provide for the distribution of accounting among a plurality of computer networks. | 03-03-2011 |
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. | 03-03-2011 |
20110044394 | Adaptive time diversity and spatial diversity for OFDM - An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix. | 02-24-2011 |
20110044366 | INJECTION SEEDED LASER RATIO LOOP CONTROL - In a method of controlling an injection-seeded laser, a response of the laser is sampled at a plurality of different laser current values. A threshold current and a slope efficiency of the sampled response are then estimated, and a bias current and a modulation current calculated based on the estimated threshold current and a slope efficiency. | 02-24-2011 |
20110044327 | Support for Continuity of Single Radio Voice Call Communications in a Transition to a Circuit Switched Communications Network - The present invention establishes a new protocol that supports the continuity of a single radio voice call onto a circuit switched communications system through the use of a special addressing identifier. This special identifier is called the single radio voice call identifier, and it designates the use of a single radio voice call continuity procedure for the transition to the circuit switched communication system. The applications server receives the single radio identifier and performs the transfer of the single radio voice session without the need for other address or identifier information, and also uses the single radio identifier or a new message type to initiate the correlation of parameters related to service control session establishment in later steps. | 02-24-2011 |
20110041027 | METHODS AND SYSTEMS FOR HARQ PROTOCOLS - Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a HARQ process, in which the HARQ process includes a first transmission of an encoder packet and at least one retransmission. The method involves allocating a transmission resource for each respective transmission. The method involves transmitting control information from a base station to a mobile station for each respective transmission. The control information includes information to uniquely identify the HARQ process and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. In some embodiments of the invention, specific control information is signalled from a base station to a mobile station to enable RAS-HARQ operation. In some embodiments of the invention, retransmission signaling in included as part of regular unicast signaling used for both first transmission and retransmissions. In some embodiments of the invention, a 3-state acknowledgement channel and associated error recovery operation enables the base station and mobile station to recover from control signaling error and reduce packet loss. | 02-17-2011 |
20110040886 | Method and System for Identification of Packet Gateways Supporting Different Service Types - The present invention provides a method and system for identification of the different packet gateways that support different types of services on their packet data networks. The method and system provides identification and addressing information to user equipment for one or more packet gateways that support different types of services, sometimes called QoS services. The identification and addressing information for the one or more packet gateways is provided in the present invention by and through a DNS server or an AAA server depending on the network architecture and the IP version supporting the communications with the mobile node. | 02-17-2011 |
20110039543 | Performance for a Multiple Antenna Beamforming Cellular Network - The present invention provides for an improved application of signal strength weightings in a SDMA sectorized cellular network. The improved signal strength weightings application is conducted through the improved selection of weightings from a new codebook subset or by the selection of weightings from a larger codebook subset. In a further embodiment, an antenna beam index or bit map can be used to select the best beam(s) in a SDMA sectorized cellular network. In another embodiment, a field or factor in an uplink or downlink transmission packet can designate which directional transmission beam is best suited for the transmission or when the directional transmission beam should be activated. | 02-17-2011 |
20110038318 | UBIQUITOUS ACCESS TO FEMTO-CONNECTED NETWORK - A system and method of enabling a mobile device to communicate with a local IP network host and an external IP network host using a femto cellular access point on a femto cellular access network. A local gateway is coupled to the femto cellular access network for receiving data packets transmitted on the femto cellular access network and for routing the data packets to one of a local IP network and an external IP network, based on a destination address associated with the data packets. The femto cellular access network includes an LTE network, an EVDO network connected to an EPC, or a WiMax 802.16e/m network connected to the EPC. | 02-17-2011 |
20110038284 | SYSTEM AND METHOD FOR WIRELESS RELAY FRAME STRUCTURE, PROTOCOL, AND OPERATION - A relay station is provided for use in a wireless communication system. The wireless communication system includes a plurality of base stations communicatively coupled to a backhaul network and at least one mobile station. The relay station is shared by at least a first base station and a second base station. The relay station includes a transceiver, a controller and relay circuitry. The transceiver transmits signals to and receives signals both base stations and a mobile station. Signals transmitted to the base stations include a single preamble, MAP and FCH. The controller is electrically connected to the transceiver and is operable to measure a signal quality of the mobile station while connected to the first base station. The relay circuitry is electrically connected to the controller and is operable to conduct a phased handoff from the first base station to the second base station based on the signal quality. | 02-17-2011 |
20110034206 | METHOD AND APPARATUS FOR CANDIDATE LIST GENERATION FOR UPLINK V-MIMO - A method selects mobile station candidates for use with virtual multiple-input multiple-output (“V-MIMO”) in a communication system. The communication system includes at least one base station and a plurality of mobile stations. At least one downlink metric is determined for a first mobile station. The at least one downlink metric is used to determine eligibility for uplink V-MIMO candidate list selection. Responsive to determining that the first mobile station is eligible for uplink V-MIMO candidate list selection, the first mobile station is paired with a second mobile station eligible for uplink V-MIMO candidate list selection. | 02-10-2011 |
20110033051 | METHOD AND APPARATUS FOR REDUCING PROBABILITY OF DETECTION, IMPROVING JAMMING RESISTANCE AND SECURITY FOR BROADBAND WIRELESS SYSTEMS - Systems and methods for generating OFDM signals are provided in which sub-carrier usage is selected and/or remapped in various manners. For example, in some embodiments remapping using a security sequence is employed; in other embodiments, decoy sub-carriers are employed; in other embodiments, mask sub-carriers are used to cover jammed portions of a channel. | 02-10-2011 |
20110032950 | MULTI-RATE TRANSPARENT MUX FOR OPTICAL COMMUNICATIONS NETWORKS - Bit-transparent muxing of an input signal for transport through an optical communications network. A fixed length container of the optical communications network is defined, which includes an overhead and a payload. A stuffing ratio (α) is based based on a line rate of the input signal and a data rate of the container. A number (N | 02-10-2011 |
20110032936 | MULTICAST IMPLEMENTATION IN A LINK STATE PROTOCOL CONTROLLED ETHERNET NETWORK - Forwarding state may be installed for sparse multicast trees in a link state protocol controlled Ethernet network by enabling intermediate nodes to install state for one or more physical multicast trees, each of which may have multiple logical multicast trees mapped to it. By mapping multiple logical multicasts to a particular physical multicast, and installing state for the physical multicast, fewer FIB entries are required to implement the multiple multicasts to reduce the amount of forwarding state in forwarding tables at the intermediate nodes. Mapping may be performed by destination nodes before advertising membership in the physical multicast, or may be performed by the intermediate nodes before installing state when a destination node advertises membership in a logical multicast. Intermediate nodes will install state for the physical multicast tree if they are on a shortest path between a source and at least one destination of one of the logical multicasts that has been mapped to the physical multicast. | 02-10-2011 |
20110032879 | APPARATUS, SYSTEM, AND METHOD FOR A REMOTE RADIO MODULE WITH RELAY CAPABILITY - Provided are an apparatus, system, and method for facilitating wireless communication between a hub and a mobile terminal via a remote radio module. The remote radio module includes a first transceiver operable to wirelessly communicate with the mobile terminal, a second transceiver operable to wirelessly communicate with the hub that is coupled to a core network, and a processor for executing instructions stored in memory. The instructions include instructions for receiving a signal from the hub at a first carrier frequency and processing the signal so that the signal can be retransmitted to the mobile terminal at a second carrier frequency different from the first carrier frequency. | 02-10-2011 |
20110019768 | METHOD AND APPARATUS FOR SPECTRALLY EFFICIENT LINK ADAPTATION USING HARQ IN OFDMA SYSTEMS - A method increases spectral efficiency in a communication system. The communication system includes at least one mobile station and is capable of transmitting messages encoded according to a plurality of available modulation coding schemes (“MCSs”). Each available MCS includes a modulation scheme and an effective coding rate. The MCSs are indexed according to increasing complexity. A signal-to-interference ratio (“SINR”) is determined which is sufficient to satisfy a predetermined frame error rate (“FER”). A first MCS and a corresponding amount of transmissions needed to satisfy the predetermined FER at the SINR using the first MCS are determined. The first MCS has a higher effective coding rate than a second MCS. The second MCS sufficiently satisfies the predetermined FER at the SINR in a single transmission. A message encoded according to the first MCS is transmitted through the communication system using hybrid automatic repeat request (“HARQ”) | 01-27-2011 |
20110019605 | MULTIMEDIA BROADCAST MULTICAST SERVICE (MBMS) UTILIZING SPATIAL MULTIPLEXING - Systems and methods are disclosed herein for an enhanced Multimedia Broadcast Multicast Service (MBMS) in a wireless communications network. In one embodiment, a number of base stations in a MBMS zone, or broadcast region, accommodate both Spatial Multiplexing (SM) enabled user elements and non-SM enabled user elements. In another embodiment, a number of base stations form a MBMS zone, or broadcast region, where the MBMS zone is sub-divided into an SM zone and a non-SM zone. In another embodiment, the wireless communications network includes multiple MBMS zones. For each MBMS zone, base stations serving the MBMS zone transmit an MBMS zone identifier (ID) for the MBMS zone. The MBMS zone ID may be used by a user element for decoding and/or to determine when to perform a handoff from one MBMS zone to another. | 01-27-2011 |
20110018766 | METHOD AND APPARATUS FOR ESTIMATING LOCATION OF A WIRELESS STATION USING MULTI-BEAM TRANSMISSION - A method and apparatus for estimating location of wireless stations in a wireless communication network are provided. An estimation of a bearing angle of a wireless station from a reference point of a multi-beam antenna pattern is made based on a plurality of beaming angles of a multi-beam antenna pattern and a received signal property, at the wireless station, of each of a plurality of wireless signals transmitted on respective beams of the multi-beam antenna pattern for each of the plurality of beaming angles. | 01-27-2011 |
20110016519 | DEVICE PROGRAMMABLE NETWORK BASED PACKET FILTER - A method is provided for filtering unwanted packets in a communication system. The communication system includes a first network, a wireless network and at least one wireless communication device. An instruction to add an entry to a blocked list is received from a specific wireless device. The entry includes blocking criteria. A first packet is received from the first network. The first packet is destined for the specific wireless communication device. If the first packet exhibits the blocking criteria included in the blocked list, the first packet is discarded before it can be distributed by the wireless network. | 01-20-2011 |
20110013765 | Management of Call Handling Treatments - The provision of call handling treatments in sequence to callers interacting with an automated call-handling system is managed by: | 01-20-2011 |
20110013678 | METHOD AND SYSTEM FOR DIVERSITY USING ORTHOGONAL FREQUENCY/DIVISION MULTIPLEXING - A method and system for achieving a link budget improvement in a diverse OFDM radio system by addressing the timing misalignment issue that can occur due to the differences in propagation time in signals between mobile stations and Radio Access Nodes. Timing misalignment is shared or split between the primary path to a primary Radio Access Node and a diverse path to a diverse Radio Access Node. The relative timing offsets between mobile stations are adjusted, the mobile stations are grouped into zones using a variety of different grouping techniques, and the transmission for each mobile station is scheduled, using one or more of a variety of scheduling techniques. | 01-20-2011 |
20110010382 | Contact Center Interfaces - A contact center interface is provided by co-operation between a search engine and a contact center. A search query entered by a user into the search engine is passed to the contact center and the contact center determines from the search terms an appropriate skillset to deal with that user query, returning to the search engine a link enabling the user to initiate a direct communications session to a live agent or queue having that skillset expertise, thereby bypassing interactive voice response sessions which are normally required to ascertain the nature of a query. By providing multiple search options to the user, the user is empowered to select the best skillset, and the accuracy of future searches can be improved. | 01-13-2011 |
20110007856 | METHOD AND SYSTEM FOR REDUCED SYSTEM-TIME OVERHEAD PARAMETER LENGTH REPRESENTATION FOR INTER-RADIO ACCESS TECHNOLOGY COMMUNICATION - A wireless access terminal, system and method for the wireless access terminal to synchronize to system times in a wireless communication system. A first timing hierarchy in a first wireless communication network is used to operate the wireless access terminal. The first wireless communication network has a first radio access technology. Operating with the first timing hierarchy includes determining a frame cycle for the first wireless communication network. The frame cycle has a frame cycle boundary. Broadcast parameters for a second wireless communication network having a second radio access technology different from the first radio access technology are received. The broadcast parameters include the system time of the second wireless communication network. The system time of second wireless communication network is aligned, from the perspective of the wireless access terminal, with the frame cycle boundary. The wireless access terminal engages in a communication session using the second wireless communication network. | 01-13-2011 |
20110007711 | Support for Multi-Homing Protocols Using Transient Registration and Expanded Binding Revocation Messages - The present invention solves these problems with a new proxy binding update request and proxy binding acknowledgement messages having new indicators and identification information. Namely, the home agent/local mobility anchor will exchange proxy binding update messages and proxy binding acknowledge messages that include information such as mobile node identification (MN-ID), home network prefix (HNP), but can also include selective information fields such as, access type, handover indicator (HO), and interface identification (interface ID). By including new access type, indicator, and identification information, the local mobility anchor can respond to a binding update request message with a better understanding of the new connectivity request from the mobile node. The invention also includes a binding revocation message with expanded trigger field information sent from the local mobility anchor to the mobile access gateways. | 01-13-2011 |
20110003597 | METHOD FOR CONTROLLING INTERFERENCE IN FEMTO CELL DEPLOYMENTS - A method and system provide a plurality of femto cells that are deployed within a macro cell of cellular network. The femto cells improve cellular service inside structures, such as residential and commercial structures. Femto base stations convert signals between an airlink-interface and core network to enable data communication between the mobile terminal and an access network to occur through the Internet and a public switched telephone network. The femto base stations are independent of each other and the macro cell. The method and system provide the femto base stations with interference awareness and mitigation techniques to minimize interference with the cellular network. | 01-06-2011 |
20110002482 | Method and Apparatus for Dynamically Determining Mix Sets in an Audio Processor - Methods and apparatus are disclosed for dynamically selecting the number of audio channels to mix per listener in an audio processor, such as a server-based three-dimensional audio mixer, as a function of any reasonable measurement of the load on the audio processor. | 01-06-2011 |
20110002451 | Intelligent Tagging for Multimedia Call Recording Purposes Using Continuous Metadata - A method of indexing recordings of contact center communication sessions is described. The method allows for a recording to be indexed with metadata reflecting a time-varying characteristic of one or more of the parties of the communications session, e.g. the mood of a caller, the current location of a caller. The indexing of recordings with such information allows for more granular search of recordings, in order to find particular call conditions. This can be useful from the point of view of education and training of new call center operatives, and for assessment of call center performance. | 01-06-2011 |
20110001567 | SYSTEM AND METHOD FOR BUILT IN SELF TEST FOR TIMING MODULE HOLDOVER - Embodiments of the invention include a method for use in a device having a local oscillator. The method includes performing, for the local oscillator that is disciplined by an external reference signal, while locked to the external reference signal, training at least two mathematical models of the oscillator to determine a predicted correction signal for each mathematical model based at least in part on a correction signal that is a function of the external reference signal and which is used to discipline drift in the oscillator. The method also includes selecting a mathematical model of the at least two mathematical models that results in a smallest time error when disciplining the oscillator to use when the external reference signal is unavailable and an alternative correction signal is to be used to discipline drift in the oscillator. The method further includes testing the selected mathematical model using a sampled version of the correction signal such that the selected mathematical model can be used without the need for a testing duration that is in addition to a period of time used for the training. | 01-06-2011 |
20100333158 | Analysis of Packet-Based Video Content - A system for receiving and decoding packet-based video signals, and method of operation and computer program product for such system are disclosed. The system receives a packet-based data stream encoding a video or television signal. The content is analysed in accordance with user-editable rules to find matches between conditions specified in the rules and corresponding actions to be taken. On detection of a match with the received content, a corresponding action is implemented by issuing a command to control a component which is under the control of said receiving and decoding system. | 12-30-2010 |
20100331055 | Mobile Fast Alerting - Where a separate bearer channel is required to be set up in a mobile network to complete a hybrid VoIP call on the mobile network as specified in 3GPP ICS standard TR 23.892, an alerting process may be started after a provisionable delay rather than upon completion of the network call setup. This allows the mobile network user to start responding to the impending call before signaling of the call has been completed, so that the person can answer closer in time to completion of call signaling. Additionally, the person who placed the call may be provided with ringing feedback to make it sound like the call has been completed. The amount of delay between receipt of a SIP invite and the onset of an alerting process may be specified in the mobile handset or may be specified as a header in the SIP invite. The amount of delay may be fixed or adjusted based on feedback. | 12-30-2010 |
20100329638 | METHOD AND APPARATUS FOR INDEPENDENT LICENSING OF AUDIO IN DISTRIBUTION OF AUDIOVISUAL ASSETS - A method and apparatus is disclosed for enabling and facilitating the licensing of audio portions of audio-video assets per individual copy of the asset. The method and apparatus involves omitting unlicensed portions of the audio content from the asset and instead inserting tags identifying the omitted audio portions and distributing the audiovisual asset, whereupon each individual distributee may obtain licenses for the unlicensed audio portions of the asset and then accessing and playing those audio portions during playback of the asset. | 12-30-2010 |
20100329265 | Method and Apparatus for implementing L2 VPNs on an IP Network - MP-BGP VPN infrastructure based on IETF RFC 4364/2547 is used to configure a layer 2 VPN on an IP network. VRFs for the VPN are configured on Ethernet switches and service IP addresses are associated with each configured VRF. The service IP addresses are exchanged to enable VPN traffic to be encapsulated for transport over the IP network. To enable a L2 VPN to be established on the network, a VPN-VLAN ID will be configured for the L2 VPN and import/export route targets for the VPN-VLAN will be set in each VRF and UNI-VLAN that is part of the VPN. The VPN-VLAN will be announced to all PEs using MP-iBGP with export route targets set for this VPN-VLAN. The PE's control plane learns the VPN-VLAN on a logical port if the import RT matches the export RT received by the MP-iBGP control plane. Once the VPN-VLAN is learned on a logical port, the PE will perform MAC learning on that logical port and treat the logical port as if it were part of the L2 VLAN. | 12-30-2010 |
20100329252 | Method and Apparatus for Enabling Multicast Route Leaking Between VRFs in Different VPNs - Multicast route leaking between VRFs in different VPNs enables receivers in different VPNs to subscribe to the same IP multicast so that an efficient IP multicast distribution tree can be built to include subscribers in multiple VPNs. VRFs are administratively configured to implement multicast route leaking and each such configured VRF brings up an internal connectionless IP interface. The VRFs then enable the multicast routing protocol (e.g. PIM) on the internal IP interface to establish PIM neighborships with each other. When a VRF receives an IGMP join from a receiver, it uses PIM to join the receiver to the multicast over the internal IP interface. This enables receivers outside of a VPN but associated with VRFs that are co-located on the same PE to join multicasts established within the VPN so that separate multicast distribution trees are not required for each VPN. | 12-30-2010 |
20100329215 | Multi-Beam Cellular Communication System - A cellular communication system comprising a plurality of geographically spaced base stations ( | 12-30-2010 |
20100322253 | Method and Apparatus for Simulating IP Multinetting - IP Multinetting on a local area network is simulated by performing VLAN translation at a port connecting to the local area network. This allows IP addresses from multiple subnets to be associated with a single VLAN on the Local Area Network (LAN), while allowing the core switch to process the packets with a one-to-one correspondence between IP Subnet and VLAN. When a packet is received from the local area network at an IP multinetting port, the VLAN ID will be read to determine if the packet contains the IP Multinetting VLAN ID. The IP Subnet address will also be checked to see if the packet is associated with an IP Subnet that is part of the Multinetting. If so, the multinetting VLAN ID will be changed to an IP Subnet specific VLAN ID before the packet is processed by the core switch. In the reverse direction, IP subnet specific VLAN IDs will be translated to the IP Multinetting VLAN ID. | 12-23-2010 |
20100322244 | Utilizing Betweenness to Determine Forwarding State in a Routed Network - A set of critical nodes or links is identified on the network through which most of the shortest paths on the network occur. Each node compares their distance to end points on the network with a distance between the end points and each of the distinct critical nodes. Where the distance between the end points and the critical nodes is shorter than the distance between the end points and the node, the node is not on the shortest path and does not install forwarding state. Where the distance between the end points and the critical node is larger than or equal to the distance between the end points and the node, the node may be on the shortest path between the pair of end nodes and installs forwarding state. Installation of forwarding state may cause packet duplication, but determining forwarding state is dramatically simplified. The level of duplication may be reduced by selecting a larger number of critical nodes on the network. | 12-23-2010 |
20100321122 | SYSTEM AND METHOD FOR REDUCING HOLDOVER DURATION - A device is provided having a local oscillator (LO) configured to generate a first signal comprising at least one of: timing information; frequency information; phase information; and combinations thereof. The device also has a LO error corrector comprising an input, the input configured to receive a second signal comprising at least one of: timing information; frequency information; phase information and combinations thereof, wherein the second signal is used for disciplining the LO. The LO error corrector is configured to: if the second signal is unavailable to discipline the LO, discipline the LO using a source that is less accurate than the second signal. Upon the second signal becoming at least temporarily available, the LO corrector determines an offset error of the LO relative to the second signal. If the second signal becomes unavailable before the device uses the second signal to discipline the LO on an ongoing basis, the LO corrector corrects the offset error of the LO relative to the second signal based information obtained during the second signal's temporary availability and disciplines the LO using a source that is less accurate than the second signal until the second signal becomes at least temporarily available at a subsequent time. | 12-23-2010 |
20100321118 | SYSTEM AND METHOD FOR SELECTING OPTIMUM LOCAL OSCILLATOR DISCIPLINE SOURCE - A device is provided having a local oscillator (LO) configured to generate a first signal having timing information, frequency information, phase information or combinations thereof. The device also includes a prioritizer comprising at least two inputs, each input configured to receive a respective second signal having timing information, frequency information, phase information or combinations thereof. The prioritizer is configured to determine an accuracy of at least one second signal of the at least two second signals in relation to a second signal assigned to be a most accurate of the at least two second signals. The prioritizer is also configured to order the at least two second signals from most accurate to least accurate. The LO is disciplined to correct an offset error of the LO relative to a most accurate second signal that is available to the device, based on the order of the at least two second signals. | 12-23-2010 |