Patents Examined by Roberta A. Shand
  • Patent number: 8576716
    Abstract: A method for data processing is provided, the method comprises: determining the predicted transmission time required by the data packet to be transmitted currently during the transmission course and the residence time for the data packet residing in the buffer; when the sum of the predicted transmission time and the residence time is greater than the predetermined air interface time delay, discarding the data packet. By utilizing the technical scheme of the invention, the discarding time of the data packet is dynamically adjusted, the packet discarding rate is reduced, and the service quality is improved. An apparatus for data processing is also provided.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: November 5, 2013
    Assignee: China Mobile Communications Corporation
    Inventors: Nan Li, Shuping Chen, Jing Han, Guangyi Liu
  • Patent number: 8565164
    Abstract: A wireless mesh network architecture includes a plurality of wireless nodes, with each wireless node in the network is connected to every other wireless node in the network. Each pair of wireless nodes is coupled by a link dedicated to exchange of data by the pair of nodes. The link is characterized by an agreement between two end points of the link to rendezvous for the purposes of exchanging data at a predetermined time over a predetermined channel. Methods of negotiating rendezvous characteristics, such as rendezvous channel, time, frequency, duration and transmission power ensure that the selected link is tuned to minimize interference and power usage in the WN. A handshake mechanism enables high performance data delivery with minimal packet loss. The link based architecture uses Link State Advertisements, traffic tags and spanning trees to fine tune packet flow through divergent devices in the network.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: October 22, 2013
    Assignee: Piccata Fund Limited Liability Company
    Inventor: Floyd Backes
  • Patent number: 8547826
    Abstract: A monitoring apparatus for monitoring packet communication by a plurality of information processing apparatuses. The monitoring apparatus includes a receiving unit for receiving packets transmitted from the plurality of information processing apparatuses, a storage unit for storing a first identification value of a first packet and a first transmission source address of the first packet, and a processing unit for comparing a second identification value of a second packet with the first identification value of the first packet when a second transmission source address of the second packet matches the first transmission source address of the first packet to detect duplication of IP addresses when a difference between the first identification value and the second identification value exceeds a predetermined value.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: October 1, 2013
    Assignee: Fujitsu Limited
    Inventors: Yuji Nomura, Takeshi Yasuie
  • Patent number: 8542707
    Abstract: In general, a method performed on a personal base station includes transmitting a first pilot signal to a portable access terminal operating in an idle mode in a macrocell that uses a first carrier frequency. The first pilot signal is transmitted in the first carrier frequency to allow the portable access terminal to temporarily connect to the first pilot signal. A second pilot signal is transmitted in a second frequency that is different than the first frequency. The portable access terminal is dispelled from the first pilot signal, and the portable access terminal is allowed to connect to the second pilot signal.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: September 24, 2013
    Assignee: Airvana LLC
    Inventors: Jindong Hou, Andrew Richardson, Kenneth Jones
  • Patent number: 8537692
    Abstract: A network failure detecting method for detecting a failure of a network including a number of transferring devices by tracing data flow rates of the transferring devices based on physical topologies of the transferring devices for the network, composing a group of the transferring devices adjacent to one another, data flow rates of which have failed to be obtained, as one virtual transferring device; and replacing physical topologies of the group of the transferring devices adjacent to one another, data flow rates of which have failed to be obtained, with a physical topology of the composed virtual transferring device.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: September 17, 2013
    Assignee: Fujitsu Limited
    Inventors: Jun Ogawa, Takeshi Yasuie, Makoto Kubota
  • Patent number: 8537728
    Abstract: A communication apparatus with echo cancellation includes a transmitter, a receiver, a digital echo cancellation circuit, a parameter control circuit, and an analog echo cancellation circuit. The digital echo cancellation circuit determines an echo estimation component according to a digital output signal, and performs a digital echo cancellation on a digital input signal according to the echo estimation component. The parameter control circuit generates a control signal according to the echo estimation component. The analog echo cancellation circuit includes a first echo cancellation resistor and a second echo cancellation resistor, wherein the resistances of the first echo cancellation resistor and the second echo cancellation resistor are adjusted according to the control signal.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: September 17, 2013
    Assignee: Realtek Semiconductor Corp.
    Inventors: Liang-Wei Huang, Ting-Fa Yu, Ta-Chin Tseng, Chih-Chi Wang
  • Patent number: 8537729
    Abstract: A method for sending a sounding reference signal (SRS) of uplink channel in a time division duplex system is provided, a terminal calculates the parameters of the resource for sending an SRS in an uplink pilot time slot (UpPTS) according to the configuration information related to the sounding reference signal (SRS) of the uplink channel, the parameters include the frequency domain start position of the resource, and then the SRS is sent over the resource; wherein when the frequency domain start position of the resource is calculated, it is necessary to determine the index of the first sub-carrier in the maximum SRS bandwidth; the terminal determines the index according to the frequency domain position of one PRACH or that of more PRACHs in the uplink pilot time slots, when the PRACH includes the sub-carrier at the lower boundary of the system bandwidth, the upper boundary of the system bandwidth is used as the end position of the maximum SRS bandwidth and the start position of the maximum SRS bandwidth is ca
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: September 17, 2013
    Assignee: ZTE Corporation
    Inventors: Peng Hao, Chunli Liang, Bo Dai, Shuqiang Xia, Bin Yu
  • Patent number: 8537745
    Abstract: A method and apparatus processes a plurality of analog signals in a transceiver with multiple receive (Rx) antennas in a wireless communication system. By appropriate combining of the analog signals of each Rx antenna, this scheme allows a reduction in the number of the front end components, for example, filters, mixers and Analog to Digital Converter (ADC) devices. Subsequently, the signals are separated digitally by virtue of their unique code. The benefits associated with this scheme are at least threefold: reduced cost, area, and power consumption of a multiple antenna terminal. Additionally, proper parameter settings increase signal to Quantization Noise Ratio (SQNR) at the ADC output.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: September 17, 2013
    Assignee: QUALCOMM Incorporated
    Inventor: Roberto Rimini
  • Patent number: 8520502
    Abstract: Systems and methodologies are described that facilitate selective release of mobile devices using conflicting identifiers when communicating with an access point. The access point can detect the conflicting identifier and transmit a selective release message to the mobile devices. The selective release message can include a disambiguation identifier so the appropriate mobile device can identify that it is incorrectly connected to the access point and can release its connection. The disambiguation identifier can be one or more unique aspects of the correctly or incorrectly connected mobile device, such as an identifier, previous message related aspects, whether a security or context check can be decoded, etc. Thus, connection of the incorrectly connected mobile device can be released without additionally releasing the correctly connected mobile device.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: August 27, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Nathan Edward Tenny, Masato Kitazoe
  • Patent number: 8520632
    Abstract: Systems and methodologies are described herein that facilitate synchronization of Node B-ordered parameters, such as discontinuous transmission (DTX)/discontinuous reception (DRX) status, following a handover failure and/or other suitable triggering events. As described herein, upon failure of a handover from a source Node B to a target Node B, a mobile device can return to the source Node B and synchronize with the source Node B with respect to DTX/DRX status and/or other Node B-ordered parameters. DTX/DRX synchronization can be performed by setting DTX/DRX status to a default state, a last DTX/DRX state utilized prior to initiation of the failed handover, or the like. Identification of the last DTX/DRX state can be conducted as described herein according to an analysis of respective orders communicated by the source Node B in relation to respective time intervals following initiation of the failed handover.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: August 27, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Liangchi Hsu, Aziz Gholmieh, Kiran KishanRao Patil, Guruvayurappan Vasudevan
  • Patent number: 8503288
    Abstract: A network device includes a primary control unit that establishes a network tunnel with another network device. The network device applies a silent failover technique to failover from the primary control unit to a backup control unit while maintaining the network tunnel. The network tunnel may be, for example, a Layer 2 Tunneling Protocol (L2TP) tunnel, and the network device may be an L2TP Access Concentrator (LAC) or an L2TP Network Server (LNS). The techniques may prevent abnormal termination of the network tunnel during the failover. Once the failover from the primary control unit to the backup control unit is complete, the backup control unit synchronizes sequence numbers associated with the network tunnel with sequence numbers of the non-failed network device, and resolves inconsistencies between subscriber session databases of the backup control unit and the non-failed network device.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: August 6, 2013
    Assignee: Juniper Networks, Inc.
    Inventor: Paul Howard
  • Patent number: 8503471
    Abstract: A transmitting party adds reproduction time information to each transport packet to form an extended transport packet, encapsulates the extended transport packet, adds capsule counter information, and transmits the capsule. A receiving party has a storage means, and transmits a re-send request including the capsule count information to the transmitting party when a packet loss occurs. At the receiving party, the re-sent data received overwrites data in its original storage region. At reproduction, the receiving party decodes the data after compensating for jitter referring to reproduction time information. Accordingly, a packet loss or jitter is compensated for at both transmitting and receiving parties in a communications network such as the Internet so as to prevent the occurrence of a decoding error at the receiving party.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: August 6, 2013
    Assignee: Panasonic Corporation
    Inventors: Masahiro Takatori, Shoichi Goto
  • Patent number: 8477733
    Abstract: Disclosed herein is a method and system for providing multiple reverse-activity bits (RABs) in a coverage area. An exemplary method involves (a) providing EV-DO service in a wireless coverage area; (b) measuring reverse noise rise (RNR) in the wireless coverage area; (c) comparing the measured RNR to each of a plurality of RNR thresholds, wherein each RNR threshold corresponds to one of a plurality of RABs; (d) using the RNR threshold corresponding to each RAB as compared to the measured RNR as a basis for determining whether to set or clear the particular RAB; and (e) providing the plurality of RABs in the wireless coverage area.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: July 2, 2013
    Assignee: Sprint Spectrum L.P.
    Inventors: Hemanth Balaji Pawar, Shilpa Kowdley Srinivas, Bhagwan Khanka, Anoop Goyal
  • Patent number: 8472351
    Abstract: A Fast Ethernet and HDMI Ethernet channel (HEC) physical layer circuit. The physical layer circuit comprises a Fast Ethernet physical layer module implementing a physical layer specification of a Fast Ethernet communication standard; a hybrid circuit connected to the fast Ethernet physical layer module using a first twisted-pair wire and a second twisted-pair wire and capable of processing transmit and receive HDMI Ethernet channel (HEC) signals concurrently transported over a third twisted-pair wire; a switch for bypassing the hybrid circuit; and a controller for controlling the operation the hybrid circuit and the switch according to the operating mode of the physical layer circuit, wherein the operation mode of the physical layer circuit is any of a fast Ethernet and a HEC.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: June 25, 2013
    Assignee: TranSwitch Corporation
    Inventors: Amir Bar-Niv, Genady Veytsman
  • Patent number: 8467296
    Abstract: One embodiment provides a system that facilitates bandwidth-profile enforcement. During operation, the system indicates a packet's compliance with a bandwidth profile based at least on available high-compliance tokens and medium-compliance tokens. The system further accounts for overflow tokens from a respective class of service (CoS) and distribute an overflow token to another CoS priority level based on the overflow token's CoS information.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: June 18, 2013
    Assignee: Foundry Networks, LLC
    Inventor: Norival R. Figueira
  • Patent number: 8467301
    Abstract: Router misconfiguration diagnosis is disclosed. A notification of a routing failure between a first node and a second node is received. A first interface associated with the first node is identified, and a second interface associated with the second node is identified. A first management information value and a second management information value, specific to a routing protocol, are determined. Matching status is determined between the first and second management information values. A diagnostic message is generated responsive to the notification.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: June 18, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kam C. Wong, Peter C. Zwetkof, David M. Rhodes
  • Patent number: 8462723
    Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: June 11, 2013
    Assignee: WI-LAN, Inc.
    Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
  • Patent number: 8446860
    Abstract: According to an example embodiment, a method for wireless communication includes establishing a communication session between a base station associated with a wireless network and a network access device associated with a separate communications network. The network access device provides the base station access to the communications network. The method further includes receiving location information from the network access device. The location information describes the location of the network access device. The network device receives the location information from a server on the communications network. In addition, the method includes providing a service to at least one wireless device utilizing the location information.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: May 21, 2013
    Assignee: Fujitsu Limited
    Inventors: Chenxi Zhu, Wei-Peng Chen
  • Patent number: 8428080
    Abstract: Methods to control reconfiguration of multiple radio access bearers in a mobile wireless device connected to a wireless network are described. The mobile wireless device is connected to the wireless network through a voice connection and a data connection simultaneously. The data connection is concurrently active with the voice connection. Transmission of one or more signaling messages for the data connection is delayed until the voice connection terminates. Representative signaling messages include messages that reconfigure a radio access bearer supporting the data connection and messages estimated to exceed a pre-determined transmission time interval.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: April 23, 2013
    Assignee: Apple Inc.
    Inventors: Longda Xing, Li Su, Jianxiong Shi
  • Patent number: 8416805
    Abstract: Methods for increasing upstream bandwidth utilization in an Ethernet passive optical network (EPON) use in some instances round-down instead of round-up occupancy values reported to an optical line terminal. An optical network unit determines whether the occupancy needs to be round-up or round-down and reports the occupancy in either round-up or round-down report units to the optical network terminal.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: April 9, 2013
    Assignee: PMC Sierra Ltd
    Inventors: Zachy Haramaty, Jeff Mandin, Valentin Ossman