Patents Issued in June 1, 2010
  • Patent number: 7729279
    Abstract: The present invention provides a traffic analyzing system on a communications link having analyzer circuits connected to each other by a number of links, where each analyzer circuit has a data rate lower than the data rate of the communications link, and are adapted to perform respective different levels of analysis on packets. The information extracted from the packets analyzed at a first level of analysis by a first analyzer circuit is forwarded to a second level of analysis performed at a second analyzer circuit, where the additional analysis performed by the second analyzer circuit depends on the analysis performed by the first analyzer circuit. Such a system and associated method allows for an efficient, practical, and improved traffic flow analyses for computer networks to evaluate high-speed and heavy traffic flow, as well as for improved protocol analysis for emerging technologies.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: June 1, 2010
    Assignee: QOSMOS
    Inventors: Gautier Harmel, Eric Horlait, Jerome Tollet
  • Patent number: 7729280
    Abstract: Broadcast messages are efficiently directed to nodes of an overlay network. Broadcast messages include an End ID parameter specifying the range of key values for nodes that should receive the broadcast message. Each node of an overlay network maintains a list of finger nodes and their respective key values. Upon receiving a broadcast message, a node assigns a finger node a new End ID value based upon the End ID value of the broadcast message or the key value of an adjacent finger node. The node compares a finger node's new End ID value with the finger node's key value to determine whether to forward the broadcast message to that finger node. A broadcast message forwarded to a finger node includes an End ID parameter equal to the new End ID value determined for the finger node. Nodes can aggregate response messages from its finger nodes.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: June 1, 2010
    Assignee: Sony Computer Entertainment Inc.
    Inventors: Yutaka Takeda, Howard Berkey, Payton R. White, Attila Vass
  • Patent number: 7729281
    Abstract: Messages transmitted between a receiver and a transmitter are used to maximize a communication data rate. In particular, a multicarrier modulation system uses messages that are sent from the receiver to the transmitter to exchange one or more sets of optimized communication parameters. The transmitter then stores these communication parameters and when transmitting to that particular receiver, the transmitter utilizes the stored parameters in an effort to maximize the data rate to that receiver. Likewise, when the receiver receives packets from that particular transmitter, the receiver can utilize the stored communication parameters for reception.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: June 1, 2010
    Assignee: Aware, Inc.
    Inventors: Marcos C. Tzannes, Dongjun Lee, Todor Cooklev, Colin Lanzi
  • Patent number: 7729282
    Abstract: The present invention discloses a configuration apparatus thereof which can efficiently configure a new home appliance in the home network system comprised of various home appliances. The configuration method of a home network system, comprising of confirming whether a previously-stored logical address is an initial logical address, transmitting a master search packet to the home network system when the logical address previously stored in the storage means is an initial logical address, waiting for a response packet from the home network system, when the response packet is received from the home network system, changing the initial logical address into a predetermined logical address according to reception of the response packet; and when the response packet is not received from the home network system, changing the previously-stored initial logical address into a previously-stored basic logical address.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: June 1, 2010
    Assignee: LG Electronics Inc.
    Inventors: Koon-Seok Lee, Seung-Myun Baek, Hwan-Jong Choi, Yong-Tae Kim, Feel-Young Koo, Ja-In Koo, Seong-Hwan Kang
  • Patent number: 7729283
    Abstract: A system for establishing a direct network connection between a first and a second node over a data-packet-network includes a third network node having connection to the data-packet-network for providing an electronic interface accessible to the first node; a navigation agent directed by the third network node for navigating over the network to the second node to gather information; and at least one machine-readable instruction containing the instruction for directing and implementing the direct network connection. The electronic interface may be a Web page providing bill consolidation and payment services to a client operating the first node and wherein the connection established via the instruction enables transparent login payment of a bill at the second node, which may be a direct billing party interface of the client registered and listed on the Web page.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: June 1, 2010
    Assignee: Yodlee.com, Inc.
    Inventors: Hill Ferguson, Blake Hayward, Ramakrishna Satyavolu
  • Patent number: 7729284
    Abstract: The discovery and configuration of devices of interest connected to the Ethernet by an Ethernet port is disclosed. To perform discovery, Client software in a management interface transmits packets including the address of the management interface and a port identifier to a known broadcast address, requesting the MAC address for all devices of interest. Server software in the devices of interest parse the broadcast packets and broadcast a packet containing a MAC address that uniquely identifies the devices of interest back to the Client. Once the MAC addresses are returned to the Client, the Client can then broadcast protocol packets requesting the configuration of a specific device of interest such as a new IP address. Once a device of interest is configured with at least an IP address, the device of interest can communicate using TCP/IP, and it can thereafter be managed using higher level tools and firmware.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: June 1, 2010
    Assignee: Emulex Design & Manufacturing Corporation
    Inventors: Nathan H. W. Ukrainetz, Carl Joseph Mies
  • Patent number: 7729285
    Abstract: An “on-demand” approach for a routing protocol for a wireless network that achieves balanced energy consumption among all participating nodes in the network. Synchronization messages transmitted by nodes associated with an upstream node include local node information (LNI) that a node can use to repair or bypass a lost upstream node in a real or virtual (temporary) manner depending upon the local node's battery level. Only if a repair process fails will a global re-organization (Re-Org) be initiated. The LNI also allows for nodes having lower power availability (battery level) not to transmit the LNI so that unaffiliated node(s) can select an upstream node having more power availability thereby extending network life.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: June 1, 2010
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventor: Chang-June C. J. Yoon
  • Patent number: 7729286
    Abstract: A method of processing service information relating to a plurality of user services available in a telecommunications system is disclosed. The method includes storing entities defining service components in a service information database, where each service component entity represents a distinct aspect of service functionality which can be provided by the telecommunications system. Entities defining implementation technologies are also stored, each implementation technology entity being associated with a service component entity and representing a technology that can be used for implementing the aspect of service functionality represented by the service component entity. The method further stores entities defining user services available to users of the telecommunications system, each user service entity being associated with one or more service component entities defining service functionality aspects of the user service.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: June 1, 2010
    Assignee: Amdocs Systems Limited
    Inventor: Richard Mishra
  • Patent number: 7729287
    Abstract: A method of simulating a telecommunications network may include providing a database including status information for a plurality of virtual network elements. More particularly, the status information for each of the plurality of virtual network elements may include a respective network element identifier. A communication including a received network element identifier may be received. If the received network element identifier does not correspond to a network element identifier included in the database, status information for a new virtual network element may be added to the database and the status information for the new virtual network element may include the received network element identifier. After adding the status information for the new virtual network element, a communication regarding the new virtual network element may be transmitted. Related systems and computer program products are also discussed.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: June 1, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Michael Griffiths
  • Patent number: 7729288
    Abstract: A method for changing zoning in a fiber channel fabric is provided. The method includes receiving zone date from a management module, wherein the zone data is received by a fiber channel switch; waiting for active Zone Set; and sending a merge request to neighboring switches. The method also includes: sending Zone Merge Data Start message to the management module; sending new zone data to management module; and comparing the new zone data with current zone data. The method also includes creating acceptance message for new zoning, wherein the management module creates the acceptance message.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: June 1, 2010
    Assignee: QLOGIC, Corporation
    Inventor: Steven Manning Betker
  • Patent number: 7729289
    Abstract: For routing information in a network across firewalls, virtual sessions between two remote nodes are implemented by means of multiple point-to-point sessions between pairs of adjacent nodes connected through a tunnel crossing the corresponding firewall. Each node stores a routing table that is used to pass the information to be provided to a desired target node to the correct adjacent node. A peer-to-peer communication scheme is supported for allowing each pair of nodes to exchange information. For this purpose, a specific algorithm is proposed for propagating the routing information dynamically among the nodes of the network, with rules that prevent the generation of any propagation cycle.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: June 1, 2010
    Assignee: International Business Machines Corporation
    Inventors: Mauro Arcese, Giuseppe Ciano, Alessandro Donatelli
  • Patent number: 7729290
    Abstract: A method and apparatus for centralized control of a network is described. The network includes a number of nodes. The method includes creating a database and storing the database on a master node of the network. The database contains topology information regarding a topology of the network. Each of the nodes is coupled to at least one other of the nodes, with the master node being one of the nodes.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: June 1, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
  • Patent number: 7729291
    Abstract: A system and method retrieves device forwarding information from switching devices and installs it as static device forwarding information on other switches to prevent multiple copies of communications being sent from those switches.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: June 1, 2010
    Assignee: PacketExchange, Inc.
    Inventors: Flemming Heino, Jason Velody, Sarit Chhatralia, Daniel Hawkins
  • Patent number: 7729292
    Abstract: One embodiment of the present invention provides a system that detects a non-compliant router that incorrectly responds to all address-resolution-protocol (ARP) requests, including ARP requests and ARP probes for link-local IP addresses. This is accomplished by sending an ARP request asking for an Ethernet address associated with a link-local IP address, wherein the link-local IP address is a reserved link-local IP address, which should not be assigned to any device. If a response is received to the ARP request, the system determines that the response was sent by a non-compliant router that incorrectly responds to all ARP requests, including ARP requests for link-local IP addresses.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: June 1, 2010
    Assignee: Apple Inc.
    Inventors: Stuart D. Cheshire, Joshua V. Graessley
  • Patent number: 7729293
    Abstract: A communication terminal under the control of a wireless base station recursively has wireless base station capabilities in a parent network, constructs a daughter network within a scope of resources of the apparatus assigned by the wireless base station, and assigns the resources to an other communication terminal under the control of the communication terminal having base station capabilities. This constitution allows to configure two or more networks guaranteed not to interfere each other, thereby allowing the coexistence of a plurality of personal area networks on the same frequency channel. At the same time, the constitution allows expanding a network area without increasing the scale of equipment.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: June 1, 2010
    Assignee: Sony Corporation
    Inventors: Mitsuhiro Suzuki, Shigeru Sugaya
  • Patent number: 7729294
    Abstract: A method for discovering a network device is disclosed for executing a discovery procedure of the network device in a Data Link Layer (i.e. Layer 2 of OSI 7 Layers Model) via a Network Management Server (NMS) within a Local Area Network (LAN) system to discover other network devices within the LAN. Firstly, sending a discovery packet from a Network Management Server (NMS), wherein the discovery packet comprises a command for requesting the network device to send back a corresponding Media Access Control (MAC) address. Then, receiving the discovery packet by at least one of the network device, and generating a response packet corresponding to the discovery packet for sending the response packet, wherein the response packet comprises the Media Access Control (MAC) address of the network device.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: June 1, 2010
    Assignee: Cameo Communications, Inc.
    Inventor: Ming Hsien Yu
  • Patent number: 7729295
    Abstract: The apparatus includes effective bandwidth information obtaining means for obtaining effective bandwidth information indicative of an effective bandwidth of each of the communication paths attached to the receiving devices so that each of the receiving devices is connected to the receiving device or the distributing device at the higher hierarchical level; effective bandwidth comparing means for comparing the effective bandwidths of the communication paths; and connection mode setting means for setting a mode of connection among the devices on the basis of a result of comparison of the effective bandwidth comparing means.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: June 1, 2010
    Assignees: Brother Kogyo Kabushiki Kaisha, Xing Inc.
    Inventors: Yoshihiko Hibino, Yuji Kiyohara, Hiroaki Suzuki, Kentaro Ushiyama, Koichi Iijima
  • Patent number: 7729296
    Abstract: A distributed spanning tree protocol is implemented on a modular packet switch. At least some port-specific spanning tree functionality, for instance a port receive state machine and/or a port transmit state machine, operates on a processor on a line port module. At least some bridge-specific spanning tree functionality operates on a processor on a management or control module. When the spanning tree is stable, the line port module processor handles routine spanning tree “hello” messages without having to involve the control module processor. This arrangement allows the switch to handle large and/or multiple spanning trees and large numbers of bridged ports without overloading the control module processor with routine spanning tree module communications.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: June 1, 2010
    Assignee: Force 10 Networks, Inc.
    Inventor: Jagjit Choudhary
  • Patent number: 7729297
    Abstract: In one embodiment, a node comprises an interface to communicatively couple the node to a channel. The channel communicatively couples the node to a first neighbor node in a first direction and to a second neighbor node in a second direction. When the first neighbor node is scheduled to transmit and the node receives data from the first neighbor node via the channel, the node determines if the transmission of the data complies with a policy. When the transmission of the data does not comply with the policy, the node does at least one of: blocks the data from being relayed along the channel and relays the data along the channel with information indicating that the transmission of the data does not comply with the policy.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: June 1, 2010
    Assignee: Honeywell International Inc.
    Inventors: Brendan Hall, Kevin R. Driscoll
  • Patent number: 7729298
    Abstract: A system includes a first wireless device (102) and a second wireless device (106), each having at least two communication modes—one for voice transmission and reception and one for data transmission and reception, and able to communicate wirelessly with each other. The system also includes a shared object between the two devices. During an ongoing conversation between a user of the first device (102) and a user of the second device (106), an object is exchanged between the devices. The devices, working within available manipulation capabilities, communicate manipulation instructions to one another on the data mode of communication. The instructions are carried out and the object is manipulated, providing a shared interactive quasi-real-time or real-time experience.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: June 1, 2010
    Assignee: Motorola, Inc.
    Inventors: Prashant R. Velagaleti, Vivek V. Thakkar
  • Patent number: 7729299
    Abstract: Elements in a video conferencing system may respond to error message(s) by aggregating any related error messages and responding based on a severity of the error indicated by the related error messages. A multipoint control unit (MCU) may identify an active stream from a first endpoint and forward the active stream to a second endpoint. The active stream may include a plurality of packets and transmit a video image by sending a frame followed by sub-frame modifications. The MCU may receive an error message from the second endpoint and determine the error's severity, which is related to an impact on an displayed image. Based on the severity, the MCU may identify and send a set of correction packets to the second endpoint. Also, a third endpoint may receive the active stream and respond to one or more error messages received from the second endpoint.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: June 1, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Blane A. Eisenberg, David J. Mackie
  • Patent number: 7729300
    Abstract: A method and apparatus for a Gigabit Ethernet transceiver that has a Class-B amplifier in a main transmitter for higher efficiency and power handling capabilities. The output current of the main transmitter is produced by a reference voltage applied across a resistor, where the reference voltage generator, resistor and amplifier are fabricated on the same substrate, such that the output current is constant across process voltage and temperature. The transceiver also has a replica transmitter whose signal is used to cancel the main transmitter signal at the input of the receiver section of the transceiver. The replica transmitter is fabricated on the same substrate as the main transmitter, such that its output signal reflects non-linearities in the main transmitter across process voltage and temperature.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: June 1, 2010
    Assignee: National Semiconductor Corporation
    Inventors: Ramsin Michael Ziazadeh, Varadarajan Devnath
  • Patent number: 7729301
    Abstract: The object of the invention is a system, a device, a terminal and a method for filtering electronic information to be transferred to the terminal through a telecommunication connection. The invention comprises attaching a specific filtering parameter (30-32) by the device transferring the electronic information to the electronic information for the purpose of filtering before the electronic information is transferred to the terminal through the telecommunication connection, and informing the terminal of said filtering parameter (30-32) before the electronic information is transferred to the terminal through the telecommunication connection. In the terminal, the steps comprise checking said informed filtering parameter (30-32) and allowing or preventing the receiving of the electronic information on the basis of said filtering parameter (30-32).
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: June 1, 2010
    Assignee: Nokia Corporation
    Inventor: Matti Salmi
  • Patent number: 7729302
    Abstract: The present invention is a technique to select an input port. A database stores records of input ports for a plurality of communication channels. Each of the records includes a timestamp and a ready status. The timestamp indicates a most recent service time. A selector selects one of the input ports based on the timestamp and the ready status. A listener updates the records.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: June 1, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Sam B. Sandbote
  • Patent number: 7729303
    Abstract: Methods and systems for implementing trunking techniques in CDMA systems for handling group calls and push-to-talk services and roaming of group calls.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: June 1, 2010
    Assignee: ZTEIT USA, Inc.
    Inventors: James Jiang, Yonggang Fang, Rajesh Bhalla, Mary Chion
  • Patent number: 7729304
    Abstract: The present invention relates to combining point-to-multipoint service data in a mobile terminal of a wireless communication system. A mobile terminal receiving MBMS service data of a current cell in a MAC entity while concurrently receiving the same MBMS service data from a neighboring cell in a MAC entity discards any received data not related to MBMS. Accordingly, any unnecessary operation of the terminal in simultaneously receiving the MBMS service from different cells is minimized. Thus, the mobile terminal effectively receives the MBMS service.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: June 1, 2010
    Assignee: LG Electronics Inc.
    Inventors: Young Dae Lee, Sung Duck Chun, Seung June Yi
  • Patent number: 7729305
    Abstract: A method for providing a single-frequency network (SFN) service between a base station (BS) and a mobile station (MS) in a wireless communication system. The BS sets a first segment indicator in a medium access control (MAC) message field before transmission, if a resource allocation scheme corresponds to general data transmission. The BS sets a second segment indicator in the MAC message before transmission, if the resource allocation scheme corresponds to single frequency-based data transmission. The MS receives the MAC message from the BS, and performs renumbering according to the first segment indicator or the second segment indicator included in the received MAC message.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: June 1, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jae-Hee Cho, Bong-Gee Song, Soon-Young Yoon, Jae-Hwan Chang, In-Seok Hwang, Eun-Sun Choi, Hoon Huh, Sung-Joon Park
  • Patent number: 7729306
    Abstract: A method and apparatus for a wireless communication system having a plurality of terminals is provided. At least one quality requirement defining a minimum quality of communication service threshold for receiving information by at least one terminal over a communication channel is determined. At least one quality parameter of the communication channel is also determined, where the quality parameter defines a degree of quality in which communication is received by the terminal over the communication channel. The quality parameter is compared to the quality requirement, and the terminal is prevented from tuning to the communication channel providing that the quality parameter is lower than the quality requirement. In another embodiment, the at least one quality requirement is associated with a service threshold indicator (STI) value, and the STI value is communicated to the terminal for comparison of the quality requirement to the quality parameter.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: June 1, 2010
    Assignee: Qualcomm Incorporated
    Inventors: Masakazu Shirota, Raymond Tah-Sheng Hsu
  • Patent number: 7729307
    Abstract: A system is provided for scheduling data from a network element (101), such as an RNC (101), of a cellular communication system to at least one base station (103) across a shared communication link (105) shared between a plurality of cell sectors (107-111). The apparatus comprises resource allocators (113, 115, 117) each of which schedules data for a single cell sector (107-111). A resource determination processor (119) dynamically determines a resource requirement parameter for at least one of the cell sectors (107-111). The resource determination processor (119) is coupled to a resource assignment processor (121) which dynamically assigns a resource availability of the shared communication link (105) to each of the resource allocators (113, 115, 117) in response to the resource requirement parameter. The resource allocators (113, 115, 117) then schedule data for communication over the shared communication link in response to the resource availability.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: June 1, 2010
    Assignee: IPWireless, Inc.
    Inventor: Peter J. Legg
  • Patent number: 7729308
    Abstract: Optimal allocation of a number of sub carriers to applications having diverse QoS requirements and executing on terminal devices (e.g., mobile stations). A base station (BS) considers the QoS requirements and the observed QoS for each of the applications in computing the number of sub carriers allocated to each terminal device in the forward link direction in a given time slot. For allocation in the reverse link direction, the terminal device transmits a first bit indicating whether the aggregate queue lengths (of all applications) exceeds a pre-specified threshold and a second bit indicating whether a delay bound requirement is likely to be violated in the absence of sub carrier allocation. The BS computes the number of sub carriers to be allocated in the reverse link direction based on the respective two bits received from the terminal devices.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: June 1, 2010
    Assignee: Texas Instruments Incorporated
    Inventor: Mukesh Taneja
  • Patent number: 7729309
    Abstract: A transmission area is specified flexibly in accordance with the contents of a flow. An area identification number (SHOG) is specified for each interlaced stream of wireless base stations. The same flow is sent at the same timing (or substantially at the same timing) in the interlaced stream specified for the same SHOG. A wireless terminal determines a neighbor sector or a neighbor wireless base station sending the same flow, in accordance with information given from the wireless base stations, and receives and combines the flows.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: June 1, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Akihiko Yoshida, Shiro Mazawa, Yosuke Takahashi, Daigo Takayanagi
  • Patent number: 7729310
    Abstract: A method is provided for allocating sub-channels in an Orthogonal Frequency Division Multiple Access (OFDMA) mobile communication system including a plurality of cells or a plurality of sectors. The method comprises dividing a time interval preset into a band Adaptive Modulation and Coding (AMC) sub-channel region and a diversity sub-channel region, for each of the cells or sectors; and allocating band AMC sub-channels only in a preset frequency region of the full frequency band used in the OFDMA mobile communication system, in the band AMC sub-channel region.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: June 1, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yung-Soo Kim
  • Patent number: 7729311
    Abstract: An image data communication system that enables a suppression of the loss of data during a handover interval without entailing insufficiency of network resources includes: image data distribution device for sequentially distributing, with prescribed time differences, encoded image data 1 and 2 in which an identical image has been encoded; and image data reception device for receiving encoded image data 1 and 2 that have been distributed from image data distribution device while moving among a plurality of radio areas. Image data reception device, at the time of handover that occurs during movement from a current radio area to another neighboring radio area, receives over a prescribed interval encoded image data 1 and 2 having prescribed time differences that are distributed from image data distribution device, and selects necessary data from the encoded image data 1 and 2 that have been received to reconstruct one set of encoded image data.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: June 1, 2010
    Assignee: NEC Corporation
    Inventor: Hiroaki Dei
  • Patent number: 7729312
    Abstract: A router apparatus used in an IPv6 multihome network and capable of exchanging a network prefix as route information with an adjacent router is disclosed. The router apparatus comprises a pair information generator (52) configured to associate a prefix assigned from the network with a default route to generate a pair information item, and a routing protocol processor (51) configured to distribute the pair information item of the prefix and the associated default route to the adjacent router using a routing protocol.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: June 1, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Toshihiro Suzuki, So Ishida
  • Patent number: 7729313
    Abstract: An OFDM mobile communication system includes a system controller for dividing an OFDM symbol into a control channel and a data channel, multiplexing the control channel to control subchannels, and allocating the multiplexed control subchannels to base stations. The base stations simultaneously transmit control signals on the control allocated subchannels and data on the data channel. Mobile nodes receive an OFDM symbols with the multiplexed control channels for them and a data channel for selecting a base station according to information in the control subchannels. The mobile node simultaneously processes control subchannels received from two base stations using one physical layer module.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: June 1, 2010
    Assignees: Samsung Electronics Co., Ltd., Yonsei University
    Inventors: Sang-Hoon Lee, Sung-Hyun Cho, Sang-Boh Yun
  • Patent number: 7729314
    Abstract: Methods and apparatus for preventing an IP address from being assigned to a client implementing a protocol such as DHCP are disclosed. This is particularly useful in an environment such as a Mobile IP environment in which a network device (e.g., Access Point) performs proxy registration on behalf of the client. When the client transmits a detection packet to detect whether its IP address is still valid (e.g., whether it is on the same sub-network on which the IP address was allocated), a response is transmitted to the client that indicates that the client is still on its home network. This response is transmitted regardless of whether the client is still on its home network. Since the client believes it is still on its home network, a new IP address will not be assigned to the client. As a result, an existing Mobile IP session will not be interrupted.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: June 1, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Waseem Siddiqi, Bruce A. McMurdo, Kent K. Leung
  • Patent number: 7729315
    Abstract: A method of performing cell measurements in a telecommunications system. The method includes the steps of receiving a signal by a user equipment (UE) operating within the telecommunications system and served by a serving cell, storing the received signal in a buffer, and determining a first portion of the signal related to the serving cell and a second portion related to neighbor (NB) cells. The first portion of the signal is decoded by the Fast Fourier Transforms (FFT) and the signal strength is estimated by a measurement unit coupled to the FFT. Next, any approximately synchronized NB cell signals in the second portion of the signal are then decoded and a signal strength is estimated. It is then determined if sufficient time remains to process unsynchronized NB cell signals of the second portion of the signal.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: June 1, 2010
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Bengt Lindoff, Anders Wallén, Johan Nilsson
  • Patent number: 7729316
    Abstract: Embodiments of the present invention can be used to efficiently receive access control and traffic information. In one embodiment, the invention includes receiving a signal at a radio in a timeslot on a carrier using a plurality of antenna elements, the signal including an access control burst from a first remote radio and a traffic burst from a second remote radio, the traffic burst being part of an existing logical connection between the radio and the second remote radio. The access control burst and the traffic burst can then be extracted using spatial processing.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: June 1, 2010
    Assignee: Intel Corporation
    Inventor: Christopher R. Uhlik
  • Patent number: 7729317
    Abstract: An antenna diversity receiver has a low-IF receiving mode and a diversity selection mode, and a switch arrangement for coupling one of the antennas to the IF channels when in the receiving mode, and coupling each of the channels to a different one of the antennas in the selection mode. A diversity controller compares qualities of signals received simultaneously from the different antennas during the selection mode, and controls the switch arrangement in the receiving mode, to use the better antenna. The quality measurement is carried out during reception of a carrier before a preamble to a desired signal is received, so that there is more time to obtain a better signal quality measurement and to enable better averaging over time. The channels have a polyphase filter with switchable cross coupling between the channels, so that it acts as two independent low pass filters in the selection mode.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: June 1, 2010
    Assignee: ST-Ericsson SA
    Inventors: Adrian W. Payne, Richard J. Caldwell
  • Patent number: 7729318
    Abstract: A base station controller selects codes corresponding to rate information included in a new starting call message from a mobile station, and further selects codes assignable to the mobile station from the selected codes as candidate codes. Then, the base station controller detects codes which meet both the characteristics of being at a higher level of the candidate codes in the tree structure and being assignable to other mobile stations, and further detects levels of the detected codes. Detected levels for all the candidate codes are compared to find a candidate code whose level is the lowest and to assign the candidate code to the mobile station sending the new staffing call message.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: June 1, 2010
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Keijiro Take
  • Patent number: 7729319
    Abstract: The present invention discloses a wireless LAN system and a signal collision avoidance method for the wireless LAN system, which can avoid the collision of signals between a wireless LAN system initiating communication at fixed intervals and a wireless LAN system initiating communication after waiting for the vacancy of a channel. According to the present invention, when it is recognized that there is a no signal section between a downlink phase and an uplink phase upon scheduling of a communication frame, a scheduler part 6 performs scheduling for putting a NAV setup signal, which covers the no signal section, behind the downlink phase in accordance with instructions from a NAV setup signal generating part 8, and transmits the same. It can prevent any station in an IEEE802.11a wireless LAN system from transmitting data in the no signal section, and hence avoid the collision of signals within the period of the uplink phase.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: June 1, 2010
    Assignee: Panasonic Corporation
    Inventor: Jun Hirano
  • Patent number: 7729320
    Abstract: A mobile station enables communication with a fixed station and other mobile stations. The mobile station includes a receiving unit receiving first timing information, second timing information and reliability information with regard to the second timing information. A selector selects a timing, to be used for communication timing with the fixed station or the other mobile stations, between the first timing information and the second timing information based on the reliability information.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: June 1, 2010
    Assignee: Fujitsu Limited
    Inventor: Kensuke Sawada
  • Patent number: 7729321
    Abstract: Techniques for controlling access to a communication channel for each of a plurality of nodes in a wireless ad hoc communication network. According to one embodiment, each node uses a predetermined rule, such as a hash function, to compute which of a plurality of time slots during a contention window it is to attempt transmissions. Each node in the network follows the same rule to access the channel and as a result no additional overhead transmissions are required between the nodes. In addition, contention among different nodes is reduced when a node needs to repeat an attempt to make a transmission. When a node has data to transmit on the channel, it determines a time slot in the contention window period during which to attempt the transmission using a computation that is based on a number identifier assigned to the node, the number of time slots in the contention window period and a transmission count value that represents the number of attempts the node has made to make the transmission.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: June 1, 2010
    Assignee: ITT Manufacturing Enterprises Inc.
    Inventor: Yu-Jih Liu
  • Patent number: 7729322
    Abstract: An HDLC accelerator includes a deframer and framer to respectively accelerate the deframing and framing processes for PPP packets. The deframer includes an input interface unit, a detection unit, a conversion unit, and an output interface unit. The input interface unit receives a packet of data to be deframed. The detection unit evaluates each data byte to detect for special bytes (e.g., flag, escape, and invalid bytes). The conversion unit deframes the received data by removing flag and escape bytes, “un-escaping” the data byte following each escape byte, providing a header word for each flag byte, and checking each deframed packet based on a frame check sequence (FCS) value associated with the packet. The output interface unit provides deframed data and may further perform byte alignment in providing the deframed data. A state control unit provides control signals indicative of specific tasks to be performed for deframing.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: June 1, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Nischal Abrol, Jian Lin, Hanfang Pan, Simon Turner
  • Patent number: 7729323
    Abstract: Method for isochronous data packet transport over a wireless network, comprising the steps of: collecting a plurality of isochronous data packets at a service specific convergence sub-layer of a wireless source device; posting said plurality of isochronous data packets as a whole to a common part convergence sub-layer of the wireless source device, wherein said plurality of isochronous data packets posted to the common part convergence sub-layer corresponds to the amount of isochronous data packets generated by a transmitter over a 2 ms period.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: June 1, 2010
    Assignee: Thomson Licensing
    Inventors: Klaus Gaedke, Sébastien Perrot, Gilles Straub
  • Patent number: 7729324
    Abstract: Different subnets are allocated to respective wireless LAN terminals. It is assumed that when the setting of IP addresses is completed, a packet is to be sent from wireless LAN terminal 1 to wireless LAN terminal 2. Since the different subnets are allocated to respective wireless LAN terminals 1, 2, wireless LAN terminals 1, 2 are unable to communicate directly with each other. Wireless LAN terminal 1 sends a packet destined for wireless LAN terminal 2 to a default gateway (=access limiter). Since the packet received by the access limiter is destined for wireless LAN terminal 2, the access limiter transfers the packet to wireless LAN terminal 2.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: June 1, 2010
    Assignee: NEC Corporation
    Inventor: Seiji Kachi
  • Patent number: 7729325
    Abstract: A system and method that addresses the issue of inducing and exploiting multi-user diversity in, e.g., a WLAN system in a fully distributed and opportunistic manner. In some embodiments, the system includes: an access point having a variable beamformer configured to fluctuate signal strength as perceived by stations within a range of the access point; and a plurality of stations having modified distributed-MAC protocol such as to be channel-aware and opportunistic.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: June 1, 2010
    Assignees: Toshiba America Research, Inc., Telecordia Technologies, Inc.
    Inventors: Praveen Gopalakrishnan, David Famolari, Shuichi Obayashi, Raziq Yaqub
  • Patent number: 7729326
    Abstract: A communication system comprises a wireless switch, a plurality of wired access ports and a plurality of wireless access ports. The plurality of wired access ports are coupled to the wireless switch via a wired connection and are configured to receive data over the wired connection and over a wireless connection. The plurality of wireless access ports are configured to receive data over the wireless connection from the wireless access port and to send data over the wireless connection to the wired access port. The wireless access ports are further configured to receive and encapsulate first wireless data packets in to first wired data packets based on a wired transmission protocol and encapsulate the first wired data packets into second wireless data packets based on a wireless transmission protocol.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: June 1, 2010
    Assignee: Symbol Technologies, Inc.
    Inventor: Ramesh Sekhar
  • Patent number: 7729327
    Abstract: The particular status of a Multiple Network Interface Mobile Device (MID) is identified and particular problems associated with that status are addressed by activating different modes of operation depending upon whether the MID is stationary or in motion. In particular, when the mobile device is in motion, the multiple network interfaces are used to prevent packet loss, and when the mobile device becomes stationary, the multiple network interfaces are used to enhance bandwidth to achieve superior Quality of Service (QoS). MIDs thus are allowed to utilize multiple interfaces simultaneously for bandwidth incremental increases if the mobile device is stationary. MIDs also are allowed to utilize multiple interfaces simultaneously for packet loss recovery and smooth and seamless transitioning from one interface to another when the mobile device is in motion.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: June 1, 2010
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventor: Raziq Yaqub
  • Patent number: 7729328
    Abstract: A real-time data transport protocol directed to aggregating multiple packets of a real-time protocol session and transmitting redundant copies of the packets as defined by a sliding window. In particular implementations, a method comprising accessing a plurality of packets of a real-time protocol session; aggregating, over a sliding window, a contiguous sequence of packets in the plurality of packets into real-time data transport packets, and transmitting the real-time data transport packets to a receiving node.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: June 1, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Patrick Wetterwald, Vincent Ribiere, Robert J. Friday