Patents Examined by Inder Pal Mehra
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Patent number: 7079487Abstract: The invention concerns a management process for a network of routers based on the technique of training by reinforcement in which priority is given to objects already present in the network over those which wish to enter.Type: GrantFiled: December 18, 2001Date of Patent: July 18, 2006Inventors: Dominique Derou-Madeline, Laurent Herault
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Patent number: 7072296Abstract: Wireless network demands continually increase as wireless service providers pursue additional service capabilities. In a cellular communication system, leased lines between remote cell sites and the corresponding Mobile Switching Offices (MSOs) remain a major operating cost. Bandwidth reduction by identification and elimination of payload data and control information which need not be fully replicated because it can be deduced from information accessible or previously transmitted allows fewer lines to support the same bandwidth. A wireless access gateway is operable to aggregate such redundant and regenerable data on a backhaul link between a wireless cell site and the corresponding mobile switching office (MSO) to provide low-latency, type specific lossless bandwidth reduction. The wireless access gateway identifies regenerable information and eliminates portions of the data which the device need not transmit because the data is redundant, or accessible or recreatable, at the receiving side.Type: GrantFiled: August 1, 2003Date of Patent: July 4, 2006Assignee: NMS Communications CorporationInventors: R. Brough Turner, Kevin J. Bruemmer, Michael R. Matatia, Andrei E. Toma, Aram Falsafi, Svetlana O. Sokolova, Murtaza Amiji, Charles C. Linton, James M. Van Donsel, Benoit Delorme, Paul Trudel, David Ouellet, Jean-Hugues Deschenes, Daniel F. Daly
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Patent number: 7068594Abstract: A Multiservice Access Concentrator (MAC) is provided that provides fault tolerant permanent voice calls in a voice over packet-data-network system (VOPS). The MAC sets up at least one permanent voice call by coupling a number of nodes in series using a voice-over-packet protocol and a set of primary connection bindings. Furthermore, at least one set of alternate connection bindings are defined for the permanent voice call. At least one preference-based list is generated comprising the sets of alternate connection bindings. Each node operating with the voice-over-packet protocol is capable of determining at least one out-of-service state for the node. A failure of at least one of the series nodes is detected by the node. A reconnection relationship is established between nodes on either side of a node determined to be out of service. The permanent voice call connection is automatically re-established or reconnected using at least one alternate node.Type: GrantFiled: February 26, 1999Date of Patent: June 27, 2006Assignee: Cisco Technology, Inc.Inventor: Michael Tasker
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Patent number: 7061885Abstract: Two related voiceband compression techniques are employed in order to enable an RF telecommunications base station to accommodate data signals of high speed voiceband modems and FAX machines. A High Speed Codec enables the base station to pass voiceband modem and FAX transmissions at up to 9.6 kb/s. An Ultra-High Speed Codec supports voiceband modem and FAX transmissions up to 14.4 kb/s. The High Speed Codec operates using three 16-phase RF slots or four 8-phase RF slots, and the Ultra-High Speed Codec operates using four 16-phase RF slots. Because these codecs transmit information over several RF slots which can be contiguous, the slots within RF communication channels are dynamically allocated. The Dynamic Time slot/Bandwidth Allocation feature detects and monitors the data transmission and forms a data channel from the necessary number of slots.Type: GrantFiled: March 8, 2002Date of Patent: June 13, 2006Assignee: InterDigital Technology CorporationInventor: Scott David Kurtz
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Patent number: 7061892Abstract: In an information transmission method, a radio communications system, a base station and a mobile station, a TBS size, a modulation scheme and the number of codes in a multicode are converted into identification data having a relatively smaller data size before being transmitted to a destination of communication. The TBS size is identified by using, in combination, an identification code identifying a channelization code set, an identification code identifying a modulation scheme, and an identification code obtained by converting a combination of the number of codes in a multicode and a modulation pattern identification (TFRC) into a corresponding code. Accordingly, the data size for TBS size identification is reduced.Type: GrantFiled: January 31, 2003Date of Patent: June 13, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Michiaki Takano
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Patent number: 7061882Abstract: A system is disclosed for use in a wireless communication system to provide an estimated pilot signal. The system includes a receiver and a front-end processing and despreading component in electronic communication with the receiver for despreading a CDMA signal. A pilot estimation component is in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a pilot estimator that includes more than one filter and that includes a switching method for using the more than one filter. The switching method uses a prediction error. A demodulation component is in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols.Type: GrantFiled: August 18, 2003Date of Patent: June 13, 2006Assignee: Qualcomm IncorporatedInventors: Farrokh Abrishamkar, Kartik B. Ariyur, Kenneth Kreutz-Delgado
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Patent number: 7054282Abstract: A wireless communications system and methods therein uses information, such as frame sequence numbers to improve DCCH or SCH power control. The system includes a base transceiver station (BTS) (14) with a frame type determinator (32) for determining whether the recovered data frames are good, erased, or non-transmitted data frames. A selector distribution unit (SDU) (16) includes a frame type verification processing block (36) for verifying that the frame type determinations made by the frame type determinator are correct based on the sequence numbers from received good data frames, and a power control block (38) for transmitting subscriber device power control information based on frame type determination verifications made by the verification processing block.Type: GrantFiled: November 27, 2002Date of Patent: May 30, 2006Assignee: Motorola, Inc.Inventors: Lee Proctor, Eric Tsou, Mark Hetherington, John Harris
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Patent number: 7039008Abstract: A system and method are disclosed for maintaining the state of a virtual connection supported by an active connection manager on a standby connection manager. The method includes configuring the standby connection manager to include a physical machine object that stores a physical IP address of a physical machine that is available to the active connection manager and a virtual machine object that stores a virtual IP address of a virtual machine that is implemented on the connection manager. A replication packet is received at the standby connection manager from the active connection manager wherein the replication packet includes a foreign IP address, the virtual IP address and the physical IP address. A standby connection object is stored in the connection manager. The standby connection object includes the foreign IP address, the virtual IP address and the physical IP address from the replication packet on the standby connection manager.Type: GrantFiled: September 12, 2001Date of Patent: May 2, 2006Assignee: Cisco Technology, Inc.Inventors: Richard A. Howes, Edward C. Kersey, Bruce F. Wong, James A. Jordan, William M. Leblanc, Andrew L. Foss
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Patent number: 7035214Abstract: A system and method for transmitting data in a data communications network, using a transmission control protocol, to provide reduced acknowledgment control traffic, error recovery and congestion control. A communications link is established between a transmitter and a receiver. Setting the communications link includes setting a network congestion window to an initial length. A sequence, or stream, of data packets is sent from the transmitter to the receiver. The receiver detects any missing packets, by examining the sequence numbers of the incoming packets, and sends negative acknowledgments, generally no more than four, to the transmitter identifying the missing data packet. When the transmitter receives a negative acknowledgment, it decreases the length of the congestion window, and re-transmits the missing packet. Detection and use of round-trip time, re-transmission time-out are provided.Type: GrantFiled: September 28, 1999Date of Patent: April 25, 2006Assignee: Nortel Networks LimitedInventors: Nabil N. Seddigh, Biswajit B. Nandy, Jamal Hadi Salim
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Patent number: 7031277Abstract: Disclosed is a handover controlling method in an RNC connected to a first Node B and a second Node B in a mobile communication system where a USTS service occurs between the first Node B and a UE within a cell of the first Node B and the UE hands over when the UE is located in a handover area across the cell areas of the first Node B and the second Node B adjacent to the first Node B. The method comprises determining whether the handover for the UE is possible or not; transmitting handover information to the second Node B if the handover is possible; and transmitting a command to the UE through the first Node B, requesting the UE to hand over to the second Node B if the UE receives a response message indicating that the handover is possible from the second Node B.Type: GrantFiled: July 18, 2001Date of Patent: April 18, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Ho Choi, Hyun-Woo Lee, Seong-Ill Park, Ho-Kyu Choi
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Patent number: 7006457Abstract: A method and apparatus for recovering a second transport stream included within a first transport stream and reducing timing anomaly imparted to the second transport stream within the context of a front-end device subject to random access via a data bus, illustratively a PCI bus. A first transport stream is received from a transport medium, the first transport stream having disposed therein packets associated with a second transport stream. The first medium tending to impart jitter to the first transport stream. Those packets associated with the second transport stream are extracted from the first transport stream and adapted to reduce jitter, and launched via a second transport medium, the launched adapted packets forming a jitter-reduced second transport stream.Type: GrantFiled: August 30, 2001Date of Patent: February 28, 2006Assignee: Thomson LicensingInventors: Thomas Herbert Jones, Xaiodong Liu, Jeffery Lynn Taylor
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Patent number: 7006438Abstract: The network switch described herein provides a cell/packet switching architecture that switches between line interface cards across a meshed backplane. In one embodiment, the switching can be accomplished at, or near, line speed in a protocol independent manner. The protocol independent switching provides support for various applications including Asynchronous Transfer Mode (ATM) switching, Internet Protocol (IP) switching, Multiprotocol Label Switching (MPLS) switching, Ethernet switching and frame relay switching. The architecture allows the network switch to provision service on a per port basis. In one embodiment, the network switch provides a non-blocking topology with both input and output queuing and per flow queuing at both ingress and egress. Per flow flow-control can be provided between ingress and egress scheduling. Strict priority, round robin, weighted round robin and earliest deadline first scheduling can be provided.Type: GrantFiled: May 31, 2001Date of Patent: February 28, 2006Assignee: Turin NetworksInventors: Steve West, Dirk Brandis, Russ Smith, Frank Marrone
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Patent number: 7006511Abstract: A variable-size jitter buffer is used to store information associated with a voice signal, facsimile signal or other received signal in a receiver of a packet-based communication system. The receiver determines an appropriate adjustment time for making an adjustment to the size of the buffer based at least in part on a result of a signal detection operation performed on the received signal. For example, in the case of a received voice signal, the determined adjustment time may be a time at which a state machine associated with a speech detector is in a “no speech” state. If the actual buffer size at the determined adjustment time is not within a designated range of a target computed at least in part based on one or more jitter measurements, the buffer size is adjusted at the determined adjustment time, e.g., by an amount representative of the difference between the actual buffer size and the target.Type: GrantFiled: July 17, 2001Date of Patent: February 28, 2006Assignee: Avaya Technology Corp.Inventors: Christopher Lanzafame, Christopher B. Moran, Richard Szajdecki
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Patent number: 7002966Abstract: A method and system for scheduling multiple frames and packets that are queued for transmission over a link, and queued from a link for storing into main memory. It recognizes priorities, provides fairness, and guarantees forward progress of all users. This method and system provides a mechanism that achieves the objectives with a very small state machine. It takes advantage of the nature of the traffic to calculate priorities in parallel to frame transmission.Type: GrantFiled: September 21, 2001Date of Patent: February 21, 2006Assignee: International Business Machines CorporationInventors: Thomas A. Gregg, Kulwant M. Pandey
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Patent number: 6992983Abstract: Effective bandwidth of a communication link is determined in a heterogeneous, packet switched network between a source and a destination, where effective bandwidth is defined as the actual available bandwidth between the server and the client, minus the overhead of the various network protocols used to transmit the data. The method includes measuring transmission times between the source and a destination for a plurality data segments having different characteristics, such as different sized files or subfiles of data; processing the transmission times to cancel effects of transmission latencies other than the different characteristics of the data segments; and indicating a bandwidth based on said processing. The processing is done in parallel with the return of user resources to the destination, and using a bandwidth detection engine associated with a proxy server.Type: GrantFiled: May 5, 2000Date of Patent: January 31, 2006Assignee: Macromedia, Inc.Inventor: Saurav Chatterjee
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Patent number: 6990093Abstract: The invention relates to a method of transmitting a synchronized channel in a radio transmitter and to a radio transmitter. The method comprises transmitting normal radio bursts on a normal channel asynchronously. In the invention, synchronized timing is obtained, synchronized radio bursts (SB) are formed, and a synchronized radio burst is transmitted in the place of a normal radio burst (NB). The length of the synchronized radio burst (SB) is at most half of the length of the normal radio burst (NB). The transmission of the synchronized radio burst (SB) is in synchronization with the obtained synchronized timing.Type: GrantFiled: March 25, 1999Date of Patent: January 24, 2006Assignee: Nokia Networks OyInventors: Timo Rantalainen, Ville Ruutu, Marko A Alanen, Gudni Gunnarson, Olli Hyvarinen
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Patent number: 6987726Abstract: In a communication network in which each of plural nodes (110 . . . 120) has an assigned node identifier, a node signature (step 505) is generated by each node from an identifier of a component (e.g., 201) of the node or from statistical processing of information in the node. Each node distributes information data (300) that includes its assigned node identifier and its generated node signature (405). The node signatures in information data at a node having the same node identifier are compared (step 710) to detect whether the node signatures for the same node identifier are different. The operation of the network is modified (e.g., 640, 725, 825 or 915) in response to detection of different node signatures for nodes having the same node identifier. The modification (725) may include removing all but one node of the nodes of the same node identifier detected as having different node signatures from network participation.Type: GrantFiled: May 22, 2000Date of Patent: January 17, 2006Assignee: BBNT Solutions LLCInventor: Brig Barnum Elliott
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Patent number: 6982955Abstract: An emergent network that is autonomous at the service level. Network nodes have policies that enable them to process different types of service requests, with the processing earning the nodes ‘rewards’. Successful nodes can pass some or all of their policies to other nodes using the evolutionary biology of bacteria as a model.Type: GrantFiled: March 28, 2000Date of Patent: January 3, 2006Assignee: British Telecommunications public limited companyInventors: Ian W Marshall, Christopher M Roadknight
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Patent number: 6975639Abstract: A method and apparatus provides QoS shaping/provisioning scheme for a data communications switch, such as a DiffServ aware router or a 802.1Q aware bridge, in which distinct internal and outbound priority values are assigned to a packet based on flow properties associated with an inbound packet. The flow properties used to assign the internal and outbound priority values may include at least one value from a packet field that is not dedicated to defining QoS. The internal priority value provides a priority to the packet during processing in the switch. The outbound priority value is applied to the packet in lieu of the inbound priority value prior to transmitting the packet from the switch. The flow properties used to determine the internal and outbound priority values may include, for example, Layer 2, Layer 3, and Layer 4 information encoded in the packet.Type: GrantFiled: November 21, 2000Date of Patent: December 13, 2005Assignee: AlcatelInventors: Rex Hill, Dante Cinco
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Patent number: 6967942Abstract: To address the need for a communication infrastructure and method to speed uplink data setup, the present invention provides for the assignment of uplink packet data resources by basestation transceiver systems (BTSs) without the need to communicate with any packet control unit (PCUs) first. The present invention accomplishes this by reserving packet data resources before they are needed or requested and providing them to BTSs for assignment. Thus, BTS-PCU communication occurs in the period before an uplink connection is needed and after uplink data is established, effectively eliminating the BTS-PCU delay from uplink data setup. Moreover, the present invention provides for the transmission of transmit allowance messages before an uplink request is made by the communication unit, further reducing uplink data setup time.Type: GrantFiled: June 26, 2001Date of Patent: November 22, 2005Assignee: Motorola, Inc.Inventors: Jeffrey C. Smolinske, Jyoti N. Black, Gary E. Western