Patents Examined by Bo Hui A Zhu
  • Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
    Patent number: 7920553
    Abstract: A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: April 5, 2011
    Assignee: Broadcom Corporation
    Inventors: Joseph J. Kubler, Michael D. Morris
  • System and process for packet delineation
    Patent number: 7916641
    Abstract: An error management system and process can be used to identify an erroneous data packet in a data stream. In response to identifying the erroneous data packet, a subsequent valid data packet is located in the data stream. In one embodiment, a plurality of candidate locations of header checksum windows are searched and checked for a valid checksum. Multiple integrity checks of multiple header checksums can be used to reduce the probability of a false positive integrity check. In another embodiment, one or more information data fields can used for determining packet integrity by determining if the fields contain valid information bits.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: March 29, 2011
    Assignee: Wi-Lan, Inc.
    Inventors: Yair Bourlas, Brian D. Petry, Peter J. Graumann, Kripps Asirvatham, Doraid Y. Sadiq, Karle J. Johnson, Kenneth L. Stanwood
  • Determining rerouting information for single-node failure recovery in an internet protocol network
    Patent number: 7876672
    Abstract: For a survivable portion of a network, a backup port for a first router of the survivable network, to reach a destination node in the event of a single node failure, may be determined by (a) accepting a routing path graph having the destination node, wherein the routing path graph includes one or more links terminated by one or more primary ports of the first router; and (b) for each router of at least a part of the routing path graph, (1) assuming that the current router is removed, defining (A) a first part of the routing path graph including the destination node, and (B) a second part of the routing path graph separated from the first part wherein the second part defines one or more sub-graphs, and (2) determining the backup port for the first router by examining at least one of the one or more sub-graphs to find a link to the first part of the routing path graph.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: January 25, 2011
    Assignee: Polytechnic Institute of New York University
    Inventors: Hung-Hsiang Jonathan Chao, Kang Xi
  • Apparatus, method and system for routing a broadcast data frame in a mesh network with multiple mesh portals
    Patent number: 7869434
    Abstract: An apparatus, method and system are provided for routing a broadcast data frame in a mesh network with multiple mesh portals. In the mesh network, every mesh point selects and registers its default mesh portal. A mesh portal enters its address in a destination address field of a broadcast data frame received from outside of the mesh network and broadcasts the data frame to inside of the mesh network. The mesh point processes a received broadcast data frame relating to its registered mesh portal, thereby preventing the broadcast data frame from being redundantly transmitted in the mesh network.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: January 11, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Sung Roh, Young-Gon Choi, Jung-Ho Kim, Jae-Hoon Kim, Ji-Hoon Lee, Shubhranshu Singh
  • Method and apparatus for separation of control and data packets
    Patent number: 7843922
    Abstract: In one embodiment, the invention is an apparatus. The apparatus includes a framer to receive packets, to determine a type associated with received packets, to pass data packets to a network processor, and to pass control packets to a host processor. The apparatus also includes a processor coupled to the framer to control the framer.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: November 30, 2010
    Assignee: Cypress Semiconductor Corporation
    Inventor: Pankaj K. Jha
  • Versatile radio packeting for automatic meter reading systems
    Patent number: 7830874
    Abstract: Methods and systems of providing positive outage notification are described. In some examples, the system determines there is an outage at a facility and transmits multiple messages notifying a utility of the outage. In some examples, the messages are received at multiple message collectors. In some examples, the system determines restoration procedures based on the messages.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: November 9, 2010
    Assignee: Itron, Inc.
    Inventors: Mark Cornwall, Matt Johnson, John Buffington
  • Communication buffer scheme optimized for VoIP, QoS and data networking over a power line
    Patent number: 7826466
    Abstract: Media Access Control (MAC) layer transmit and receive buffering with multi-level prioritization. The receive buffering allocates receive buffers for receiving frame data from a PHY interface in priority order using both a static and dynamic buffer allocation, and delivers completed buffers queued in a multi-level priority queue to a host interface highest priority first. The transmit buffering delivers completed buffers queued in a multi-level priority queue to the PHY interface in priority order. When the multi-level priority queue contains a buffer that is higher priority than one being prepared for transmit, a priority-based interruption causes the transmit processing of the buffer to be suspended at its current state with the higher priority buffer taking its place. Upon completion of the higher priority buffer, the suspended buffer is resumed at its current state.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: November 2, 2010
    Assignee: Atheros Communications, Inc.
    Inventors: James Philip Patella, William E. Earnshaw, Stanley J. Kostoff, II, William Winston Williams, Timothy Robert Gargrave
  • Communication node, wireless communication system and data relay method
    Patent number: 7826337
    Abstract: A communication node for relaying a signal between a source node and a destination node is disclosed. The communication node includes: a relay signal generation unit configured to generate a transmit signal by reducing, from a receive signal, an interference signal from another communication node and performing a process such that the transmit signal is not received as an interference signal by another communication node.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: November 2, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Hui Shi, Takahiro Asai, Hitoshi Yoshino
  • Routing key interpreter
    Patent number: 7822045
    Abstract: A method of providing a routing key interpreter for a signalling gateway, the method comprising the steps of generating an input file comprising a plurality of input expressions and a plurality of routing keys corresponding to the input expression, supplying the input file to a lexical analyser generator to generate a lexical analyser, and implementing the routing key interpreter using the lexical analyser.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: October 26, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Pierre Garnero, Jean-Christophe Cimino, Stephane Barbier, Didier Desiderio, Francois Brepson
  • Method and apparatus for extending synchronous optical networks
    Patent number: 7801122
    Abstract: The number of managed network elements within a SONET network is configured to exceed the number addressable elements in a given address area. This is achieved through the use of SONET extension network elements and a special TL1 command message protocol. Any network element that has only one optical path (protected or unprotected) to an adjacent network in the SONET network can become an extension network element. TL1 command messages may be targeted to an extension network element through its only adjacent network element based on the network element's physical port connecting the network element to the extension network element.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: September 21, 2010
    Assignee: Fujitsu Limited
    Inventors: Michael Charles Green, Sushil Pandhi
  • Systems and methods for message proxying
    Patent number: 7796614
    Abstract: Systems and methods consistent with embodiments of the present invention provide a method for forwarding packets between VLAN groups served by segmented ports on a network switching device. A request from a source in a VLAN group to a destination in another VLAN group is identified. Information needed to route packets to the destination is obtained by re-broadcasting the request for destination information to all VLAN groups, which do not include the source, that are served by the network switching device. Information needed to route packets to the source is also obtained. In some embodiments, source and destination routing information obtained, is stored in tables in a memory cache on the network switching device. Information stored in the tables is used to relay additional packets between the segmented ports on the device serving the source and destination.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: September 14, 2010
    Assignee: Symantec Corporation
    Inventor: David Weymans
  • Controlling asynchronous clock domains to perform synchronous operations
    Patent number: 7792154
    Abstract: Mechanisms for controlling asynchronous clock domains to perform synchronous operations are provided. With these mechanisms, when a synchronous operation is to be performed on a chip, the latches of the functional elements of the chip are controlled by a synchronous clock so that the latches are controlled synchronously even across asynchronous boundaries of the chip. The synchronous operation may then be performed and the chip's functional elements returned to being controlled by a local clock in an asynchronous manner after completion of the synchronous operation. This synchronous operation may be, for example, a power on reset (POR) operation, a manufacturing test sequence, debug operation, or the like.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: September 7, 2010
    Assignee: International Business Machines Corporation
    Inventors: Nathan P. Chelstrom, Mack W. Riley
  • Hardware functional partitioning in a system platform of a telecommunication network element
    Patent number: 7769036
    Abstract: Disclosed is a device and method for processing a frame including overhead and payload, the device comprising: a first hardware module for processing the payload, the payload processing comprising termination/adaptation and cross-connection functions; and a second hardware module for processing at least a part of overhead, wherein said second hardware module cooperates with the first hardware module for controlling the payload cross-connection and consequent actions.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: August 3, 2010
    Assignee: Alcatel
    Inventors: Paolo Sorge, Silvio Cucchi, Stefano Gastaldello, Luca Razzetti
  • Fast handoff using GPS technology for mobile telematics
    Patent number: 7768975
    Abstract: The present invention relates to the reduction of handoff delays for mobile telematics applications. In particular, the present invention provides a method employing GPS technology to define IP addresses in a mobile environment in order to reduce delays and transient data loss caused by handoff from one network to another.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: August 3, 2010
    Assignees: Telecordia Technologies, Inc., Toyota Motor Corporation
    Inventors: Ashutosh Dutta, Wai Chen, Onur Altintas, Sunil Madhani, Yoshihisa Suwa, Shengwei Cai
  • Time reservation using adaptive control for energy efficiency
    Patent number: 7764706
    Abstract: A network, such as a radio network, uses dynamic transmission scheduling and soft clustering. When nodes contend for data slots, each node that is successful continues to have its data slot reserved for it until it sets an end-of-stream bit in an information summarization packet, indicating that it will stop broadcasting. From the information summarization packets, each node determines the other nodes to which it will listen, based on proximity and information content.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: July 27, 2010
    Assignee: University of Rochester
    Inventors: Bulent Tavli, Wendi Heinzelman
  • Data transmission system, header-information adding device, data-format converting device, and data transmission method
    Patent number: 7764708
    Abstract: A header-information adding unit adds a device ID for identifying a device at a sending node and a device ID for identifying a device at a receiving node to a header of a packet sent by the sending node. The packet is transmitted to a data-format converting device by a packet transmitting unit. In the data-format converting device, the packet is received by a packet receiving unit, and is sent to a unique-information detecting unit. The unique-information detecting unit detects the device IDs from the header of the packet, and sends them to a data-format converting unit with the packet data. The data-format converting unit determines the data formats used by the sending node and the receiving node based on the detected device IDs, and converts the data format of the packet sent by the sending node into the data format of by the receiving node.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: July 27, 2010
    Assignee: Sony Corporation
    Inventor: Atsushi Okamori
  • System and method for the reacquisition of a gated pilot
    Patent number: 7760765
    Abstract: Systems and techniques are disclosed wherein a gated pilot signal can be re-acquired faster by searching a last known pilot offset and/or searching a last coset in which the last pilot signal was found.
    Type: Grant
    Filed: May 31, 2003
    Date of Patent: July 20, 2010
    Assignee: Qualcomm, Incorporated
    Inventor: Abhay Arvind Joshi
  • Packet stream arrangement in multimedia transmission
    Patent number: 7751324
    Abstract: Transmitting media information from a transmitting device to a receiving device. To perform the transmission a media stream is encoded and packets are formed from the encoded media stream, the packets containing application data units, the application data units having a decoding order. At least two blocks are generated from the packets. The packets of the at least two blocks are organized into a first group and a second group, the first group being decodable without reception of said second group. The transmission order of the packets of said first group is arranged succeeding packets of said second group such that the application data units in the transmission order are at least partly in a different order than the decoding order.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: July 6, 2010
    Assignee: Nokia Corporation
    Inventors: Vinod Kumar Malamal Vadakital, Stephan Wenger, Miska Hannuksela
  • Method and apparatus for scheduling users to allocate data transmissions in communications systems
    Patent number: 7746779
    Abstract: In the method, scheduling of a plurality of users for receiving transmitted data is prioritized within a communications system. A next data transmission among the plurality of users is allocated based on the prioritized scheduling.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: June 29, 2010
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Qi Bi, Ching Yao Huang, Pi-Chun Chen, Patrick Li, Stanley Vitebsky
  • Systems and method for dropping data using a drop profile
    Patent number: 7746776
    Abstract: A system selectively drops data from queues. The system includes a drop table that stores drop probabilities. The system selects one of the queues to examine and generates an index into the drop table to identify one of the drop probabilities for the examined queue. The system then determines whether to drop data from the examined queue based on the identified drop probability.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: June 29, 2010
    Assignee: Juniper Networks, Inc.
    Inventors: Pradeep Sindhu, Debashis Basu, Jayabharat Boddu, Avanindra Godbole