Patents by Examiner Brenda Pham
  • Patent number: 8964736
    Abstract: Systems, methods, and software are described herein for operating a RTP server including receiving a session request from a user communication device indicating the user communication device has packet format switching capability, transferring an acknowledgement to the user communication device wherein the acknowledgement comprises at least a header-free packet string length, transferring a RTP stream using bundled packet format, transferring a packet format switch triggering event, and transferring the RTP stream using header-free packet format for at least as long as the header-free packet string length.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: February 24, 2015
    Assignee: Sprint Communications Company L.P.
    Inventors: Siddharth Oroskar, Pierce Andrew Gorman, Gerald Baylis Prince Young, David M. Lee-Chin
  • Patent number: 8289853
    Abstract: The solution to the shortest path between a source node and multiple destination nodes is accelerated using a grouping of nodes, where the nodes are grouped based on distance from the source node, and a corresponding set of memory locations that indicate when a group includes one or more nodes. The memory locations can be quickly searched to determine the group that represents the shortest distance from the source node and that includes one or more nodes. Nodes may be grouped into additional groupings that do not correspond to the set of memory locations, when the distance from the source node to the nodes exceeds the range of memory locations. Advantageously, the disclosed system and method provide the ability to reach asymptotically optimal performance.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: October 16, 2012
    Assignee: BuzzCore Limited Liability Company
    Inventor: Cedell A. Alexander, Jr.
  • Patent number: 8218562
    Abstract: A technique for distributing channel allocation information in a demand access communication system. Multiple access codes are used that have a defined code repeat period or code epoch. For each such epoch duration, a schedule of assignment of traffic channels to active terminals for each epoch is determined. For each terminal designated as active during the epoch, a list of active channels for such terminal unit is assigned. Prior to the start of each epoch, a channel set up message is sent on one of the forward link channels, such as a paging channel, indicating the lists of active channels for epochs of the associated traffic channel(s) that are to follow.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: July 10, 2012
    Assignee: IPR Licensing, Inc.
    Inventors: Pertti Olavi Alapuranen, Kevin P. Johnson, Kevin L. Farley
  • Patent number: 8179897
    Abstract: The CRC for the CPS Header of an ATM AAL2 cell is generated by a CRC generator which uses the 8 bits of the CID field to generate partial 5 bits CRCs which are loaded in a first table. The 6 bits LI field and 5 bits UUI field are added to the partial 5 bits CRC to form 16 bits. The CRC generator uses the 2.sup.16 bits to generate a second CRC table. The CRC for a particular CPS header is generated by correlating bits in the CID field, LI field and UUI field with the two tables.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: May 15, 2012
    Assignee: International Business Machines Corporation
    Inventors: James J. Allen, Jr., Jean L. Calvignac, Natarajan Vaidhyanathan, Fabrice J. Verplanken
  • Patent number: 8111682
    Abstract: A method and system reduce interference between overlapping first and second wireless LAN cells contending for the same medium. Each cell includes a respective plurality of member stations. An inter-cell contention-free period value is assigned to a first access point station in the first cell, associated with an accessing order in the medium for member stations in the first and second cells. The access point in the first cell transmits an initial shield packet to deter other stations from contending for the medium. The access point then transmits a beacon packet containing the inter-cell contention-free period value to member stations in the second cell. A second access point in the second cell can then delay transmissions by member stations in the second cell until after the inter-cell contention-free period expires.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: February 7, 2012
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Mathilde Benveniste
  • Patent number: 8068488
    Abstract: A method is provided for transmitting a packet including information describing a bus transaction to be executed at a remote device. A bus transaction is detected on a first bus and a network packet is generated for transmission over a network. The network packet includes an opcode describing the type of bus transaction. One or more control signals of the bus transaction map directly to one or more bits of the opcode to simplify decoding or converting of the bus transaction to the opcode. The packet is transmitted to a remote device and the bus transaction is then replayed at a second bus. In addition, the packet includes a data field having a size that is a multiple of a cache line size. The packet includes separate CRCs for the data and header. The packet also includes a transaction ID to support split transactions over the network. Also, fields in the packet header are provided in a particular order to improve switching efficiency.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: November 29, 2011
    Assignee: Intel Corporation
    Inventors: Ken Drottar, David S. Dunning
  • Patent number: 8050291
    Abstract: A method and system for communicating an ultra-wideband signal carrying a combined digital signal that represents digital signals for multiple communication channels of a wireless communication system. A distributed antenna system includes multiple remote antenna entities. Each remote antenna entity may include an ultra-wideband transceiver for sending or receiving the ultra-wideband signal. The multiple remote antenna entities may be spaced apart within an indoor premises so as to extend cell coverage of a base transceiver station. The ultra-wideband signal may be transmitted in a forward-link direction towards one or more wireless communication devices or in a reverse-link direction towards the base transceiver station. An aggregator within a remote antenna entity may aggregate multiple combined digital signals so as to form an aggregated combined digital signal that may be transmitted in a reverse-link direction towards the base transceiver station.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: November 1, 2011
    Assignee: Sprint Spectrum L.P.
    Inventors: Sunil Prasad, Janet Ruth Dianda, John McCloskey
  • Patent number: 8045527
    Abstract: The invention is directed towards a method of estimating the load on a cell in a wireless network as well as to a cell load estimating device. According to the invention a 5 determination (46) is made of a value (R) indicative of the degree of use, by a mobile station provided in a set of mobile stations connected to a cell, of a communication link provided for this mobile station during a communication session. Based on this value an adjusted link quality value (L-ADJUST) is provided (54) for the mobile station, which is then used when determining the cell load.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: October 25, 2011
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rui Fan, Marten Ericson
  • Patent number: 8036245
    Abstract: A system and method for packet-based communications is performed by implementing arbitrated packet-based communications. According to an example embodiment, packet-based data is arbitrated and output with verification data. For each arbitrated packet stream, verification data is generated in response to detecting an end of frame (EOF) symbol in the arbitrated packet stream, and the verification data is added to the packet stream. A merged packet stream is provided at an output, the merged packet stream including the plurality of arbitrated packet streams with verification data added thereto.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: October 11, 2011
    Assignee: ST-Ericsson S.A.
    Inventors: Robert J. Caesar, Jr., Sam C. Wood
  • Patent number: 8031688
    Abstract: A method for the partitioning frequency resources used in the transmission of control signals and data signals by user equipments in a communication system. The control signals and data signals are for periodic transmission and dynamic transmission. Also provided is an apparatus and method for user equipments to determine the first frequency unit available for the transmission of dynamic control signals, such as acknowledgement signals associated respective reception of data signals configured through a scheduling assignment by a serving Node B. The utilization of the operating bandwidth is maximized by avoiding fragmentation and facilitates the achievement of reception reliability targets particularly for control signals.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: October 4, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Aris Papasakellariou, Joon-Young Cho
  • Patent number: 8027257
    Abstract: A new type of data transport service which uses a frame relay layer 2 data link connection identifier (DLCI) to select among various service types, feature sets, and/or closed user groups (CUGs). A layer 3 address may be extracted from a layer 2 frame, and the layer 3 address information may be used to route a data packet over a packet-switched network according to the service classes, feature sets, and/or CUGs selected. At the destination, the layer 3 data packet may again be enclosed in a layer 2 frame with a DLCI indicating the service classes, features sets, and/or CUGs. Because the use of conventional permanent virtual circuits (PVCs) is not required in aspects of the invention, new methods of measuring and managing network traffic are presented.
    Type: Grant
    Filed: December 27, 2009
    Date of Patent: September 27, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Christopher J. Chase, Stephen L. Holmgren, John Babu Medamana, Vikram R. Saksena
  • Patent number: 8023499
    Abstract: To guarantee continuation of communications of the level of the applications, and implement smooth and seamless switching between communication terminals that execute the service.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: September 20, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tetsuro Moriwaki, Keiichi Hibi, Shohei Yamada
  • Patent number: 8023508
    Abstract: Data packets transmitted over a wireless network are suppressed by hardware at the transmitting end and expanded on the receiving end. This conserves bandwidth as well as reduces the processing resource requirements in both the subscriber station and the base station. An extended header element is added to a data packet that is to be transmitted over the wireless network. The extended header element contains an index that is used along with an identifier to access a rule. The rule is used to determine which bytes are to be suppressed at the transmitter and expanded at the receiver.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: September 20, 2011
    Assignee: Broadcom Corporation
    Inventors: John D. Horton, Jr., Robert J. Lee, David M. Pullen
  • Patent number: 8023444
    Abstract: Described in example embodiments herein are techniques for implementing power savings in a wireless local area network (WLAN). In accordance with an example embodiment, a centralized controller can be employed to gather data about network activity and select access points to switch to power save mode. Optionally, the controller may designate certain access points to remain active so as to monitor for clients attempting to access the WLAN. An aspect of an example embodiment is that it allows the controller to configure and manage power consumption based on demands on the overall system. In an example embodiment, techniques for implementing power savings within individual hardware components, such as access points, are disclosed. An aspect of a technique described in an example embodiment is that it provides flexibility to balance power savings and performance.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: September 20, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Robert Bowser, Clark Carty, Corey Metsker, Chad Jones
  • Patent number: 8023503
    Abstract: In one embodiment, a method of providing mobile internet comprises receiving a down-link packet having a endpoint identity protocol element (EIP), the EIP comprising a global locator associated with a provider network, a first local locator set to a predetermined value, and an endpoint identifier associated with a mobile host; querying the provider network to obtain a second local locator value associated with the mobile host, the second local locator indicates the location of a first radio router with which the mobile host had previously exchange authentication; overwriting the first local locator portion of the EIP with the second local locator; and routing the down-link packet towards the mobile host using the second local locator.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: September 20, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Mark Grayson, Jayaraman R. Iyer
  • Patent number: 8018962
    Abstract: A physical layer interface for a switch. The physical layer interface includes an auto-negotiation circuit, a transceiver, and a serial interface. The auto-negotiation circuit is configured to negotiate a first data transmission rate with a network client. The transceiver is configured to communicate with the network client at the data transmission rate. The serializer interface is configured to communicate with a media access controller (MAC) at a second data transmission rate that is different than the first data transmission rate.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: September 13, 2011
    Assignee: Marvell International Ltd.
    Inventors: Sehat Sutardja, William Lo
  • Patent number: 8018882
    Abstract: A local station includes a memory and a control module. The memory stores a first status indicator that represents a number of active conversations in a wireless network and an ad-hoc traffic indication map (ATIM) window. The control module detects a change in the number of active conversations, modifies the first status indicator to generate an updated first status indicator based on the change, and adjusts a length of the ATIM window based on the updated first status indicator.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: September 13, 2011
    Assignee: Marvell International Ltd.
    Inventor: Kapil Chhabra
  • Patent number: 8014332
    Abstract: A digital broadcasting system which is robust against an error when mobile service data is transmitted and a method of processing data are disclosed. The mobile service data is subjected to an additional coding process and the coded mobile service data is transmitted. Accordingly, it is possible to cope with a serious channel variation while applying robustness to the mobile service data.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: September 6, 2011
    Assignee: LG Electronics Inc.
    Inventors: Hyen O Oh, In Hwan Choi, Kook Yeon Kwak, Byoung Gill Kim, Won Gyu Song, Jin Woo Kim, Hyoung Gon Lee
  • Patent number: 8009701
    Abstract: Providing for secondary synchronization encoding utilizing a primary synchronization channel (P-SCH)-related scrambling code is described herein. Scrambled secondary synchronization codes (SSCs) can be assigned to multiple base stations of a radio access network (RAN). By way of example, PSC-based scrambling codes can be created from a plurality of M-sequences generated from a common polynomial expression. Further, an SSC codebook is provided that selects sequence pairs of a sequence matrix for generating SSCs. Selection can be based on transmission characteristics of resulting SSCs, providing reduced interference in planned, semi-planned and/or unplanned mobile deployments.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: August 30, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Luo, Peter Gaal, Ke Liu, Arun Kannu
  • Patent number: 8005066
    Abstract: A system for path finding and terrain analysis. The system includes at least one processing unit, a graph processing unit and an artificial intelligence logic unit. A local bus is coupled to the at least one processing unit, the graph processing unit, the artificial intelligence unit and a bus interface unit. A memory bus is coupled to said bus interface unit, the at least one processing unit, a data memory, and a program memory. The graph processing unit further includes a network of interconnected nodes. Each of said nodes have at least one digitally programmable delay unit.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: August 23, 2011
    Inventors: Kareev Uri, Amihai Viks, Assaf Mendelson, Ramon Axelrod