Patents Examined by Wellington Chin
  • Patent number: 7346024
    Abstract: An apparatus and method for accessing a private wireless Internet packet data communication system. A private packet data service apparatus includes a plurality of private BTSs positioned in an private packet data service zone and an private BSC for providing a wireless packet data service using a CDMA method. The private BTSs wirelessly communicate with terminals contained in a corresponding service zone. In the case where dialing numbers of calls requested by the private BTSs are not private packet service request signals, the private BSC transmits the calls to a public network BSC. In the case where dialing numbers of calls requested by the private BTSs are private packet service request signals, the private BSC provides the calls with a packet data service for which a non-authentication, a non-accounting, and an IP service are available. The private BSC includes a PDCC (Packet Data Call Controller), a PDTC (Packet Data Traffic Controller), and a PDMA (Packet Data Maintenance & Administration part).
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: March 18, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sung-Hoon Lee
  • Patent number: 7339903
    Abstract: Permitting a mobile host to roam in a foreign network, with multiple access node handoffs, while permitting foreign network multicasting by (i) having the mobile node (MN) use a persistent address, for purposes of multicasting, and (ii) relaxing or modifying reverse path forwarding checks, and (iii) modifying the forwarding of multicast packets sent from a non-local source address. The persistent address, used in mobile networks as the source address in the IGMP Membership reports and the multicast packets, may be the permanent and hence stable host home address (HoA). This enables the HoA to be supported as a source address by foreign agents (FAs) and multicast routing protocols in foreign networks.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: March 4, 2008
    Assignee: QUALCOMM Incorporated
    Inventor: Alan O'Neill
  • Patent number: 7327695
    Abstract: A method of configuring link-scope-type managed objects in IP-based networks from a centralized management node. An IP-based network includes at least one management station, a set of network nodes, and communication links between the network nodes and between the management station and the network nodes. Preferably, an Open Shortest Path First (OSPF) topology graph of the network is prepared, and a set of target links to be configured is identified. The target links are then classified into N disjoint subsets, T1-TN. The links in each subset are then configured in parallel, starting with subset T1 and sequentially handling each subset one-by-one. The target links may be classified by removing non-target links that are not to be configured from the OSPF topology graph, building a LinkGraph to determine the dependencies between the links remaining in the OSPF topology graph, and building a LinkTree from the LinkGraph to classify the target links into the subsets based upon the dependencies between the links.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 5, 2008
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gergely Molnar, Gábor Tóth, Balázs Peter Gerö, Attila Rajmund Nohl
  • Patent number: 7317686
    Abstract: A network node computes a fair share data rate for the sharing of a shared communication channel in a local area network. The network node determines the required information for computing the fair share by snooping the network, by receiving the required information from other network nodes, or a combination of the two techniques. Alternatively, instead of computing the fair share data rate, the network node may receive the fair share data rate which was computed by another network node. The fair share data rate is enforced by the network node in a network protocol stack layer above the media access control layer. In one embodiment, the network protocol stack layer above the media access control layer is the link layer.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: January 8, 2008
    Assignee: Lucent Technologies Inc.
    Inventors: Sneha Kasera, Ramachandran Ramjee, Danny Raz, Yuval Shavitt, Prasun Sinha
  • Patent number: 7317691
    Abstract: The invention provides a method for initializing a link suspend device for optimum receive recovery. A method for negotiating link parameters to facilitate rapid recovery of the input data from a silent line state is described. The invention can be applied to network devices in point-to-point data communications links capable of operating in a low power link suspend mode.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: January 8, 2008
    Assignee: Teridian Semiconductor, Corp.
    Inventors: Andrew Mills, Ralph Andersson, Anthony Worsham, Michael Nootbaar, David Rosky, Michael Behrin
  • Patent number: 7317688
    Abstract: Dynamic up-link bandwidth allocation is realized in a optical communication system in which a plurality of subscriber devices with mutually different device configurations are connected to a station unit, by configuring the station unit to consider device configurations of the subscriber devices in performing up-link bandwidth allocation.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: January 8, 2008
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroaki Mukai, Toshikazu Yoshida, Tetsuya Yokotani, Seiji Kozaki
  • Patent number: 7315556
    Abstract: A single coder/decoder shared among several multiprocessors in a digital signal processing system through time-division multiplexing between multiple processors to enhance signal processing capabilities by assigning different digital-to-analog channels to different processors for digital-to-analog conversion, while allowing all processors to operate on the same analog-to-digital data for analog-to-digital conversion, thereby resulting in chip area reduction and power consumption saving.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: January 1, 2008
    Assignee: Agere Systems Inc.
    Inventors: Zhigang Ma, Brian J. Petryna, Oceager P. Yee
  • Patent number: 7308005
    Abstract: A method and system for providing time division multiple access communications is disclosed. The disclosure includes sending a first message in a time slot. The time slot has a slot length. The first message has a first time associated therewith. The first time includes the time required to send the first message and the propagation delay associated with the reception of the first message by a second transceiver. The disclosure also includes determining time remaining in the time slot for sending a second message. The time remaining is based on the first time and the slot length. The disclosure also relates to sending a second message in the time slot if the length of the second message plus the length of the propagation delay associated with the second message is less than the time remaining in the time slot.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: December 11, 2007
    Assignee: Rockwell Collins, Inc.
    Inventors: Brian R. Roggendorf, Eric O. Zuber, Jeffrey A. Schroeder
  • Patent number: 7298700
    Abstract: Label contention in a label switched network is resolved by applying a contention resolution scheme that reconciles policies for handling unidirectional and bidirectional label switched path setup.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: November 20, 2007
    Assignee: AT&T Corp.
    Inventors: Robert Duncan Doverspike, Charles Robert Kalmanek, Jr., Guangzhi Li, Jennifer Yates
  • Patent number: 7292545
    Abstract: To provide a wireless LAN system, a sleep mode is set for reducing consumed power and, when an arrival of the own address side is present, wake-up is caused to reliably receive the arrival. Specifically, a plurality of hosts 20 such as PC interconnected with an access point 30 via a wireless LAN each include a wireless LAN device 21, the power supply thereof being turned on and off in synchronism to a beacon signal 32 sent out in a predetermined constant cycle from the access point 30 for checking whether any arrival of data addressed to the own host 20 is present. When any arrival 33 of data is present the host 20 starts an application for reception of the arrived data.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: November 6, 2007
    Assignee: NEC Infrontia Corporation
    Inventors: Hideo Maki, Yoshikazu Kobayashi
  • Patent number: 7292594
    Abstract: A switching fabric connects input ports to output ports. Each input has an input pointer referencing an output port, and each output has an output pointer referencing an input port. An arbiter includes input and output credit allocators, and an arbitration module (matcher). The input credit allocator resets input credits associated with input/output pairs and updates the input pointers. Similarly, the output credit allocator resets output credits associated with input/output pairs and updates the output pointers. The matcher matches inputs to outputs based on pending requests and available input and output credits. A scheduler schedules transmissions through the cross-bar switch according to the arbiter's matches.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: November 6, 2007
    Assignee: LSI Corporation
    Inventors: Gopalakrishnan Meempat, Gopalakrishnan Ramamurthy, William J. Dally
  • Patent number: 7292604
    Abstract: A method and apparatus of broadcasting is provided that has a geographic identifier memory, an overlay memory storing an overlay, a receiver circuit for receiving a broadcast signal and a control circuit. The control circuit displays the overlay on the broadcast signal in response to the geographic identifier.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: November 6, 2007
    Assignee: The DIRECTV Group, Inc.
    Inventors: John P. Godwin, Robert G. Arsenault
  • Patent number: 7292550
    Abstract: A system and method are presented for minimizing loss of voice packet during a wireless communications device Candidate Frequency Search (CFS). The method includes monitoring frames in a predetermined sample frame sequence and identifying frames having minimal user information. That is, frames with lower frame rates. The method further includes, in a wireless communications device, performing a CFS responsive to identifying frames having minimal user information. One example of the method includes identifying a lowest frame rate in an initial frame and performing a CFS in a frame following the initial frame. The method includes monitoring forward direction link frames and reverse direction link frames, and simultaneously monitoring forward and reverse direction link frames.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: November 6, 2007
    Assignee: Kyocera Wireless Corp.
    Inventors: Douglas L. Dunn, Henry Chang
  • Patent number: 7292578
    Abstract: A VTMS queue scheduler integrates traffic shaping and link sharing functions within a single mechanism and that scales to an arbitrary number of queues of an intermediate station in a computer network. The scheduler assigns committed information bit rate and excess information bit rate values per queue, along with a shaped maximum bit rate per media link of the station. The integration of shaping and sharing functions decreases latency-induced inaccuracies by eliminating a queue and feedback mechanism between the sharing and shaping functions of conventional systems.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: November 6, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Darren Kerr, Van Jacobson
  • Patent number: 7292580
    Abstract: Data cells of plural classes are transferred from input ports to output ports through a switch by storing the cells at each input port in class-specific virtual output queues (VOQ) within sets of VOQs associated with output ports, and providing credits to VOQs according to class-associated guaranteed bandwidths. When a cell is received at a VOQ having credits, a high-priority request for transfer is generated. If a cell is received at a VOQ that does not have any available credits, a low-priority request for transfer is generated. In response to requests, grants are issued to VOQ sets without regard to class, high-priority requests being favored over low-priority requests. When a grant is received for a particular VOQ set, an arbitrator selects a VOQ from the set, giving priority to VOQs having credits over VOQs without credits, and a cell from the selected VOQ is transferred.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: November 6, 2007
    Assignee: LSI Corporation
    Inventors: Gopalakrishnan Ramamurthy, Gopalakrishnan Meempat, William J. Dally
  • Patent number: 7292530
    Abstract: Embodiments of a method and apparatus to improve network performance by managing packet fragmentation are described.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: November 6, 2007
    Assignee: Intel Corporation
    Inventor: Jacob Christensen
  • Patent number: 7289442
    Abstract: A traffic management processor configured to selectively terminate individual traffic flows includes an instruction decoder to receive a termination instruction specifying which traffic flows are to be deleted, and a content addressable memory device having a plurality of rows, each including a flow ID and termination bit for a corresponding packet.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: October 30, 2007
    Assignee: NetLogic Microsystems, Inc
    Inventors: Varadarajan Srinivasan, Sandeep Khanna
  • Patent number: 7286500
    Abstract: In a CDMA network, each mobile is arranged to combined pilot symbols from its dedicated pilot channel with pilot symbols from at least one common channel as an input to its channel impulse response sensing means. The common channel may be a BCH, a FACH or a PCH, and the pilot symbols on all such channels may be combined. The pilot energy required on each dedicated pilot channel can thereby be reduced. By communicating the quality of the received pilot symbols to a base station, the base station can reduce the energy on the dedicated pilot channel, providing a yet further saving of energy.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: October 23, 2007
    Assignee: Lucent Technologies Inc.
    Inventors: David Lahiri Bhatoolaul, Lorenz Fred Freiberg
  • Patent number: 7286528
    Abstract: A method, apparatus, and computer-readable media for transferring data through a switch having a memory, a plurality of ports, and a plurality of address databases storing MAC addresses for devices in communication with the switch, each address database having a different database number comprises receiving a frame of the data on a port of the switch, the port associated with one of the address databases, the frame comprising a destination MAC address; hashing the destination MAC address, thereby producing a hashed MAC address; combining the hashed MAC address and the database number of the address database associated with the port that received the frame, thereby producing a bucket address, the bucket address identifying a plurality of bin addresses, wherein each of the bin addresses identifies a bin in the memory storing a MAC address and a port identifier that identifies one of the ports in the switch; searching the bins for a MAC address matching the destination MAC address; and transmitting the frame to
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: October 23, 2007
    Assignee: Marvell International Ltd.
    Inventor: Donald Pannell
  • Patent number: 7286524
    Abstract: A telepathy system provides for the transport of voice communication over a data centric network. Through use of the SS7 signaling network, an additional STP pair may be located between STP pairs in the SS7 network and a switch specially configured for converting voice information to data packets. With the addition of a layer of STP pairs, additional processing may be performed at this layer and a significant number of A-links may be eliminated such that the majority of communication between the SS7 network and the switch may be performed over high speed B-links.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: October 23, 2007
    Assignee: Qwest Communications International, Inc.
    Inventor: Ronald J. Loftus