Patents Examined by Chuong Ho
  • Patent number: 7515568
    Abstract: A method of communicating in and around a localized wireless coverage area according to the present invention provides cellular coverage to a neighborhood cell (18) in which service might otherwise not be possible or in which a high percentage of calls would otherwise end up being dropped. Specifically, a neighborhood cell (18) is defined by either one or more fixed last hop nodes (20) or mobile last hop nodes (120). If a source mobile subscriber unit (12) communicates with a destination unit through wide area wireless network coverage, the source mobile subscriber unit (12) is handed over to ad hoc wireless network coverage either automatically or upon the occurrence of a high frame error rate when it enters the neighborhood cell (18) to maintain communication with the destination unit.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: April 7, 2009
    Assignee: Motorola, Inc.
    Inventor: Jeffrey D. Bonta
  • Patent number: 7512136
    Abstract: An Address Resolution Protocol (ARP) request is received at a gateway coupled to a first local network from a first host also coupled to the first local network. The ARP request includes a destination IP address of a second host coupled to a second local network. Also, a source IP address of the first host and the destination IP address are within the same IP address sub-network. A local network address of the gateway is then sent to the first host in reply to the ARP request, based on an entry for the destination IP address in an ARP proxy table stored on the gateway. A packet is subsequently acquired from the first host addressed to the second host. The packet's header includes the source IP address and the destination IP address. Finally the packet is transmitted toward the second host.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: March 31, 2009
    Assignee: The DIRECTV Group, Inc.
    Inventor: Dmitry O. Korotin
  • Patent number: 7436838
    Abstract: A technique configures an intermediate network node to automatically determine whether a route advertised by a routing protocol is important for fast convergence in a computer network. As used herein, an important route needed for fast convergence is a route advertised by the routing protocol, such as an exterior gateway routing protocol, as a next-hop address, since external connectivity relies on such a route. A routing information base process executing on the node stores the advertised route and, notably, interacts with an interior gateway routing protocol (IGP) process executing on the node to identify the route as an important route. Identification of an important route, in turn, allows IGP to process the route in a high priority fashion, thereby facilitating fast convergence.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: October 14, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Clarence Filsfils, Stefano B. Previdi, Jean-Philippe Vasseur
  • Patent number: 7426218
    Abstract: This invention relates to communication systems and QSIG communication methods. According to a first aspect, a communication system includes a control component; and a data network configured to communicate packets of information intermediate an originating location and a terminating location, the originating location being configured to receive a QSIG communication including a content portion and a signaling portion, wherein the data network is configured to communicate the signaling portion to the control component and the control component is configured to establish a connection within the data network intermediate the originating location and the terminating location responsive to the signaling portion, and wherein the data network is further configured to communicate the content portion of the communication within a plurality of packets intermediate the originating location and the terminating location using the connection.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: September 16, 2008
    Assignee: Verizon Business Global LLC
    Inventors: Jarrett E. Archer, Joseph A. Scivicque, Frederick A. Sherman, Heath W. Hendrickson
  • Patent number: 7423958
    Abstract: A transmitter for sending signals over wireless channels and a method of sending signals over wireless channels are described. The transmitter and the method are used to determine a transfer characteristic of an amplifier (8) in the transmitter. Symbols in the OFDM signals to be transmitted are multiplied by test signals at predefined points in time to compare the OFDM symbol, which has been multiplied by the test signal, upstream and downstream from the amplifier to determine the transfer characteristic of the amplifier (8). This transfer characteristic of the amplifier (8) is used by a predistorter (4) to predistort the signals according to this transfer characteristic. The test signal, which is generated by a signal generator (13), is input into a symbol of the fast information channel, the test signal having an amplitude which drives the multiplied symbol into the saturation range of the amplifier (8) with regard to its amplitude.
    Type: Grant
    Filed: December 16, 2000
    Date of Patent: September 9, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Marc Schrader, Mirko Lochau, Lars Harms, Nabil Hentati
  • Patent number: 7418002
    Abstract: A method and apparatus for buffering data units in a communication switch that allows for configurable monitoring of the buffer contents is presented. Such an apparatus includes a context table that stores a plurality of independent group identifiers for each connection. Although the group identifiers may include a partition group identifier and a loss group identifier that is dependent on the partition group identifier, additional group identifiers are included in the context table for each connection that are independent of other group identifiers in the context table. Such a context table may be dynamically reconfigured in order to group connections for buffer monitoring operations related to congestion detection, traffic shaping, and data admission with respect to buffering. When a data unit is received corresponding to a particular connection, the context table is referenced to retrieve the set of group identifiers corresponding to that connection.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: August 26, 2008
    Assignee: Alcatel-Lucent Canada Inc.
    Inventors: Robert E. Robotham, Denny Lee, Brent Gene Duckering, Jason Sterne
  • Patent number: 7412538
    Abstract: A request event manager for a network of consumer electronic devices. In one embodiment, the request event manager maintains a database of home network services, and allows the home network services to be scheduled for execution over time. Home network services herein refer to high-level abstractions of a consumer electronic device's functionalities, and also content that is available from the consumer electronic device. The request event manager of the present invention also creates and maintains a service request list (SRL) which details the service actions in a hierarchical fashion. By maintaining a database of home network services, the request event manager of the present invention allows user applications to specify and schedule concatenated or hierarchical events such that different network activity across interconnected heterogeneous consumer electronic devices can be synchronized without requiring complicated logic to be implemented.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: August 12, 2008
    Assignees: Sony Corporation, Sony Electronics, Inc.
    Inventors: Edward B. Eytchison, Shiva Patibanda
  • Patent number: 7408931
    Abstract: Methods for delivery of multicast packets in a wireless communication system are disclosed. The methods comprise transmitting a contention free period initiation signal from an access point to the station, transmitting broadcast packets from the access point to the station, transmitting multicast packets from the access point to the station and holding the multicast packets in storage after the transmission, transmitting a contention free period end signal from the access point to the station, determining if a negative acknowledgement message has been received, retransmitting the multicast packets in response to receiving a negative acknowledgment message, and eliminating the multicast packets at a next beacon interval.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: August 5, 2008
    Assignee: Motorola, Inc.
    Inventors: Robert D. LoGalbo, Randy L. Ekl, Ron Rotstein, Christopher G. Ware
  • Patent number: 7408946
    Abstract: The present invention provides improved work schedulers for computer systems and communication processors. A preferred embodiment of the present invention includes systems with buffer memory for storing one or more communication packets or work requests arranged on a plurality of scheduling queues and information for controlling the scheduling of the queues, with output processors for outputting packets from the buffer memory; and with control processors for performing the scheduling methods of this invention. The scheduling methods repetitively initialize each queue's service credits, repetitively process each queue in a round-robin order by granting each queue with remaining service credits no more than one quantum of service and updating that queue's service credits to reflect the service actually used and the service available for use but not actually used.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: August 5, 2008
    Assignee: Lucent Technologies Inc.
    Inventors: Nabil N. Bitar, Philip To
  • Patent number: 7385949
    Abstract: A system and method for de-interleaving data in a wireless receiver, wherein a single memory buffer is coupled to a read/write unit that performs both first and second de-interleaving operations. According to a first aspect of the present invention, the read/write unit performs the second de-interleaving operation as data is written to the memory buffer, and performs the first de-interleaving operation as data is read from the memory buffer. According to a second aspect of the present invention, the read/write unit performs the first and second de-interleaving operations as data is read from the memory buffer.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: June 10, 2008
    Assignee: Broadcom Corporation
    Inventor: Louis Jacobus Botha
  • Patent number: 7385917
    Abstract: A method is provided for providing protection for connectionless signals in a telecommunications network comprising a plurality of nodes. A first protection path is generated from each of the nodes to a destination node. A second protection path is generated from each of the nodes to the destination node. The second protection path is distinct from the first protection path. Protection traffic is routed along one of the protection paths to the destination node.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: June 10, 2008
    Assignee: Fujitsu Limited
    Inventors: Li Mo, David W. Wynn, Indra Widjaja, Edward T. Sullivan
  • Patent number: 7379476
    Abstract: In the mobile radio communication system where the UMTS and an another system coexist an idle slot for observing the frequency component of another system is inserted in one superframe of UMTS. The duration of this idle slot is at most half of the duration of one frame that form the superframe and it is inserted at an interval of a specified number of frames. Therefore, the frequency component of the another system can be observed securely from the UMTS. Further, the deterioration of interleaving performance of the compressed mode frames during such observation can be suppressed.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: May 27, 2008
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Nicolas Voyer, Yasuhiro Yano, Hideshi Murai
  • Patent number: 7376099
    Abstract: A method for dynamic channel allocation for access points in wireless networks. Communication information of wireless devices is gathered. A network topology formed by the wireless devices is derived according to the communication information. Switch channel indexes for each wireless device are calculated according to the communication information and network topology. Desired wireless devices for switching channels are determined according to the switch channel indexes.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: May 20, 2008
    Assignee: Institute for Information Industry
    Inventors: Yu-Chee Tseng, Chih-Yu Lin, Bing-Rong Lin
  • Patent number: 7376147
    Abstract: Provided are a method, adaptor, system, and program for receiving a transmission at one of multiple connections. Information is maintained on storage interconnect architectures and transmission characteristics, wherein the storage interconnect architectures have different transmission characteristics. At least one transmission characteristic of the received transmission is determined and a determination is made from the information of the storage interconnect architecture associated with the determined transmission characteristic. The information on the determined storage interconnect architecture is used to process the transmission and determine a transport layer for the received transmission, wherein there is one transport layer for each supported transport protocol. The transmission is forwarded to the determined transport layer.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: May 20, 2008
    Assignee: Intel Corporation
    Inventors: Pak-Lung Seto, Deif N. Atallah
  • Patent number: 7369497
    Abstract: This invention aims to make it possible to realize data communication having excellent communication throughput and good quality even if the communication state fluctuates. According to the present invention, by sequentially adjusting the transmission speed of data that is to be sent to the portable radio terminal 22 on the basis of momentary real transmission speed in the communication channel 6 that has been fed back from the portable radio terminal 22, and hereby controlling the data communication speed between itself and the portable radio terminal 22, it is able to execute data transmission processing that is corresponding to changes of transmission speed in the communication channel 6, in this way, it is able to realize data communication having excellent communication throughput and good quality even if the communication state fluctuates.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: May 6, 2008
    Assignee: Sony Corporation
    Inventor: Tetsuya Naruse
  • Patent number: 7366186
    Abstract: An apparatus comprises a forwarding component configured to forward data by looking up a routing table, another forwarding component configured to receive the data, and an intermediate forwarding component bridging the two components to forward the data without looking up the routing table.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: April 29, 2008
    Assignee: Intel Corporation
    Inventors: Anand Rangarajan, Sanjay Bakshi, Satyendra Yadav
  • Patent number: 7362780
    Abstract: The invention proposes a method for conveying data packets in a network, comprising the steps of examining (S1, S2) whether a received data packet is encrypted, compressing (S3) the data packet in case it is examined that the data packet is not encrypted, and refraining form compressing (S4) in case it is examined that the data packet is encrypted. The invention also proposes a corresponding network element.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: April 22, 2008
    Assignee: Nokia Corporation
    Inventor: Zhigang Liu
  • Patent number: 7359376
    Abstract: There is provided a serial compressed bus interface having a reduced pin count. The interface includes a serial-to-parallel converter having a single serial data input line adapted to receive time-division multiplexed serial data from a plurality of data sources. Enable logic is adapted to input at least one data valid signal that identifies each of a plurality of data consumers for which the time-division multiplexed serial data is valid.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: April 15, 2008
    Assignee: Thomson Licensing
    Inventors: Thomas Edward Horlander, Eric Stephen Carlsgaard
  • Patent number: 7349330
    Abstract: A packet receiver includes a packet memory circuit for temporarily storing received packets in a FIFO (First-In First-Out) fashion in the form of a queue. A read start threshold setting circuit sets, with respect to the length of the queue, a read start threshold at which the received packets should begin to be read out. A read comparing circuit determines whether or not the length of the queue has reached the read start threshold, and outputs a read command signal in accordance with the result of decision. In response to the read command signal, a read control circuit causes the received packets to be read out of the packet memory circuit. The packet receiver reduces the influence of the jitter of a communication network on speech quality. Also, the packet receiver reduces the influence of delays of packets by executing discard processing with the queue.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: March 25, 2008
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Shinji Hayakawa, Satoshi Watanabe, Atsushi Shimbo, Hiromi Aoyagi
  • Patent number: 7342885
    Abstract: Methods for implementing a backpressure mechanism in an asynchronous data transfer and source traffic control system include detecting when a bus user is experiencing congestion and preventing other bus users from sending cells over the bus. According to a first embodiment, if congestion is detected for two consecutive frames, the arbiter is inhibited from granting access to any bus user for one frame. According to a second embodiment, if congestion is detected during any frame, all the bus users are prevented from transmitting low priority traffic until congestion is absent for four consecutive frames. An apparatus for performing the methods is also disclosed.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: March 11, 2008
    Assignee: TranSwitch Corporation
    Inventors: Ronald P. Novick, Sing Ngee Yeo