Patents Examined by Roberta A. Shand
  • Patent number: 8411553
    Abstract: The present invention relates to a method and apparatus for testing mobile terminals in an OFDMA system, in which all or part of available downlink radio resources in a cell are transmitted. A processing unit in a test apparatus splits the resources used for transmission into contiguous unities in the frequency domain such that one or more of said unities comprise resources allocated to one or more mobile terminals under test, and at least one of said unities comprise resources allocated to virtual users.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: April 2, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Muhammad Ali Kazmi, Joakim Axmon, Christian Bergljung, Farshid Ghasemzadeh, Walter Muller
  • Patent number: 8411681
    Abstract: A multicasting method and apparatus in a network including a transport multiprotocol label switch (T-MPLS) network and a wavelength division multiplexing (WDM) network are disclosed. At least one of first switches, connected to the T-MPLS network, second switches connected to the WDM network, and a switch hub establishes a multicasting path by using a label switch path (LSP) ID and a label switch router (LSR) ID, in which the first switch on the multicasting path multicasts a T-MPLS signal, the switch hub converts the T-MPLS signal into an optical multicasting signal and multicasts the converted optical multicasting signal, and the second switch receives the optical multicasting signal and multicasts it in units of the T-MPLS signal.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: April 2, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kyung-Gyu Chun, Soon Seok Lee
  • Patent number: 8406162
    Abstract: A transmitter transmits time synchronized data via a pager/WiMax/802.x access to a receiver system, wherein the receiver system is programmed to receive data for specific geographic locations. The geographic locations may be specified by the user or by the receiver system, and includes state, zip codes, towns, counties, towns, or cardinal regions. The receiver is able to find its location when outside its cell region and is able to synchronize to the data transmitted in the new cell region. Further, the receiver system is able to remotely monitor weather data and other information at a different location via wireless Internet or voice over IP. A transceiver may also be used to receive weather or alert data. In response to receiving data, the transceiver transmits the data to low powered devices in a house using a different frequency band than the frequency band it received the data.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: March 26, 2013
    Assignee: La Crosse Technology, Ltd.
    Inventors: Rolf Haupt, Allan McCormick
  • Patent number: 8400941
    Abstract: Systems and methods are disclosed for managing services on a network. In one exemplary embodiment, the method includes receiving topologically relevant network information concerning nodes, interfaces, connections and/or protocols; resolving conflicts in the received information; determining and storing a network topology from the received and resolved information; and inferring one or more services based on the stored topology.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: March 19, 2013
    Inventors: Eric W. Gray, Navneeth N. Kannan
  • Patent number: 8391145
    Abstract: A method for improving network performance using a virtual queue is disclosed. The method includes measuring characteristics of a packet arrival process at a network element, establishing a virtual queue for packets arriving at the network element, and modeling the packet arrival process based on the measured characteristics and a computed performance of the virtual queue.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: March 5, 2013
    Assignee: Verizon Services Organization Inc.
    Inventor: Lawrence W. Jones
  • Patent number: 8379511
    Abstract: A system for securing the access to a destination of a virtual private network (VPNA) connected to a nominal access router (PE3) includes at least one core router (P2) adapted to: detect a failure affecting communication with the nominal access router (PE3); and switch the traffic to a protector access router (PE6) in a back-up tunnel bypassing the nominal access router (PE3). The protector access router (PE6) is adapted: to replace, in an MPLS packet, a nominal VPN label specific to the nominal access router (PE3) by a back-up VPN label specific to a back-up access router (PE4) connected to that destination; and to redirect said packet to the back-up access router (PE4) in a tunnel bypassing the nominal access router (PE3).
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: February 19, 2013
    Assignee: France Telecom
    Inventors: Jean-Louis Le Roux, Bruno Decraene, Estelle Transy
  • Patent number: 8379547
    Abstract: In a method of operating a communication network (20) a time division duplex (TDD) frame (F) of information is communicated over a radio interface (32) between a wireless terminal (30) and a base station node (28). The method comprises the wireless terminal (30) receiving plural downlink (DL) subframes of the frame and, in response thereto, configuring a Physical Uplink Control Channel (PUCCH) channel to comprise up to four acknowledgements by using only two PUCCH channel resources and using PUCCH format 1a or PUCCH format 1b. In an example embodiment a PUCCH channel resource is specified by a sequence utilized for transmission of at least part of the PUCCH channel and a cyclical shift applied to the sequence. The two sequences of the respective two PUCCH resources are orthogonal, and the cyclical shift of the two PUCCH resources can be in a frequency domain, a time domain, or both the frequency domain and the time domain.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: February 19, 2013
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Yang Hu, David Astely, Jung-Fu Cheng, Sorour Falahati
  • Patent number: 8374079
    Abstract: A proxy server in an SIP network includes the common SIP proxy server function 11, the function of determining whether an SIP request and an SIP response received by the proxy server 10 belong to a call flow encountering a failure of the working SIP server 30, and the function of, when determination is made that they belong to a call flow encountering a failure, referring to the contents of the received SIP request and SIP response to specify a destination to which the SIP request and the SIP response are to be transmitted next.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: February 12, 2013
    Assignee: NEC Corporation
    Inventors: Motohiro Suzuki, Hiroshi Kazami
  • Patent number: 8363619
    Abstract: A method, apparatus and system for establishing S1 signaling connections in an evolved network are disclosed. A source evolved NodeB (eNodeB) sends a HANDOVER REQUEST message that carries original S1 signaling connection parameter information to a target eNodeB to initiate a process that a user equipment (UE) is handed over to the target eNodeB. When the UE enters the target cell, the target eNodeB allocates a new S1 signaling connection parameter and sends a HANDOVER COMPLETE message that carries the original S1 signaling connection parameter and the new S1 signaling connection parameter of the new eNodeB to an evolved packet core (EPC). The EPC receives the HANDOVER COMPLETE message that carries the new S1 signaling connection parameter and the original S1 signaling connection parameter. With the present disclosure, the inability of the target eNodeB to establish an S1 signaling connection with the EPC in the related art is effectively solved.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: January 29, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hongzhuo Zhang, Yong Qiu
  • Patent number: 8351394
    Abstract: The embodiments of the present disclosure disclose an adaptive communication system, communication method, communication terminal and Access Point (AP). The system includes: an application mode information obtaining module, configured to obtain information about the application mode supported by the network; and an AP, configured to: provide a communication terminal with application mode information obtained by the application mode information obtaining module, wherein the application mode information indicates the application mode supported by the network; and create a communication connection with the communication terminal based on the application mode negotiated and determined according to the information about the application mode supported by the communication terminal and the information about the application mode supported by the network.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: January 8, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhonghui Yao, Yonggang Tian
  • Patent number: 8339930
    Abstract: Techniques to perform channel estimation with pilot weighting are described. A receiver receives at least one transmission symbol for a pilot transmitted by a transmitter. Each transmission symbol may be generated with a single-carrier multiplexing scheme (e.g., IFDMA or LFDMA) or a multi-carrier multiplexing scheme (e.g., OFDMA). The receiver processes each received transmission symbol and obtains received pilot values. The receiver may derive an interference estimate based on the received pilot values and may estimate the reliability of the received pilot values based on the interference estimate. The receiver determines weights for the received pilot values based on the transmitted pilot values, the estimated reliability of the received pilot values, and/or other information. The receiver derives a channel estimate based on the received pilot values and the weights. The receiver then performs data detection (e.g., equalization) on received data values with the channel estimate.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: December 25, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Dhananjay Ashok Gore, Avneesh Agrawal
  • Patent number: 8335239
    Abstract: Methods, systems, and devices are disclosed for conserving bandwidth. If a presence of a multimedia device is detected, then a stream of data is delivered to the multimedia device. If the presence of the multimedia device is not detected, then the stream of data is degraded to conserve bandwidth.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 18, 2012
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Henry J. Kafka, Eric E. Small, James C. Bedingfield, Sr., Daniel M. Baeza
  • Patent number: 8335187
    Abstract: A call routing system for use with a wireless telephone systems is disclosed. The system, which monitors the subscriber's current physical location, determines the device to which a call should be terminated, and routes the call. The device can be any IP telephone, including a cable television system adapted to IP telephony. The system routes calls without direct subscriber actions, without a second telephone number, regardless of the time of day and day of week. Various options can also apply to a call, determined by subscriber-established preferences, when specified criteria are met, or calls can be limited to/from specified telephone numbers. The system and method uses signaling techniques that will allow routing of the call, along with any authorization or restrictions, to be done remotely from the actual switching for the call. Call events are transmitted to the call routing system while the communications path of the call is held at the switching system awaiting call routing information.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: December 18, 2012
    Assignee: Bridgeport Networks, Inc.
    Inventors: Michael T. Wilhoite, Thomas A. Carter
  • Patent number: 8295228
    Abstract: A beamforming method in a base station for a mobile communication system, the communication system comprising at least a cell, the method comprising the steps of: covering at least a portion of the cell with a broadcast beam; assigning a streaming beam for each active mobile station on the portion of the cell, if a number of active mobile station on the portion is smaller than a first threshold, wherein a direction of the beams is adjusted according to a position of the active mobile stations. The method further comprises selecting a group of active mobile stations by obtaining at least two active mobile stations with a closest angular distance of all possible pairs of active mobile stations and assigning a single streaming beam to the group of active mobile station, if the number of active mobile stations is bigger than the first threshold.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: October 23, 2012
    Assignee: Alcatel Lucent
    Inventor: Michael Tangemann
  • Patent number: 8295291
    Abstract: A device includes one or more network interfaces to receive layer two (L2) communications from an L2 network having a plurality of L2 devices; and a control unit to forward the L2 communications in accordance with forwarding information defining a plurality of flooding next hops. Each of the flooding next hops stored by the control unit specifies a set of the L2 devices within the L2 network to which to forward L2 communications in accordance with a plurality of trees, where each of the trees has a different one of the plurality of L2 devices as a root node. The control unit of the device computes a corresponding one of flooding next hops for each of the trees using only a subset of the trees without computing all of the trees having all of the different L2 network devices as root nodes.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: October 23, 2012
    Assignee: Juniper Networks, Inc.
    Inventors: Ramasamy Ramanathan, Apurva Mehta, Rama Ramakrishnan, Gopi Krishna, Srinivasa Chaganti, Krishna Sankaran, Jagadish Grandhi
  • Patent number: 8289937
    Abstract: There is provided a method for supporting an internetworking between a WLAN and a mobile communications network. The mobile communications network, for example UMTS network, has a GPRS support node and a serving GPRS support node. The internetworking is facilitated by an IWF. The method comprises the steps of establishing at least one GPRS tunneling protocol tunnel between the IWF and the GGSN for transferring data signals, and establishing at least one GPRS (tunneling protocol tunnel between the GGSN and the SGSN for transferring control signals.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: October 16, 2012
    Assignee: Thomson Licensing
    Inventors: Shaily Verma, Charles Chuanming Wang
  • Patent number: 8259603
    Abstract: A cellular system comprises a mobile station and a base station. The mobile station includes a means for transmitting a pilot signal synchronized with data transmission and a means for transmitting a pilot signal not synchronized with data transmission. The base station includes a means for measuring an interference power based on the received power of the field of the pilot signal synchronized with data transmission, a means for measuring a desired wave power based on the received power of the field of the pilot signal not synchronized with data transmission, and a means for estimating the channel quality of the mobile station based on the interference power and the desired wave power.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: September 4, 2012
    Assignee: NEC Corporation
    Inventors: Nahoko Kuroda, Takahiro Nobukiyo
  • Patent number: 8243748
    Abstract: A channel utilizing method for a wireless network is adapted for channel utilization by a switch node having a number (N) of transceivers in an environment with a number (M) of channels, wherein (N)<(M). The channel utilizing method includes the steps of: calculating a channel weight set, and selecting one of the (M) channels according to the channel weight set; determining a notify mechanism according to a relation between the switch node and a neighbor node; using the notify mechanism to notify the neighbor node of a current state of the switch node; and calculating a channel stay-in period, and causing the switch node to stay in the selected one of the channels for a duration of the channel stay-in period. A channel utilizing system is also disclosed.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: August 14, 2012
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chia-Yu Ku, Ying-Dar Lin, Shau-Yu Cheng
  • Patent number: 8233405
    Abstract: Capability information about communication devices joining a network is collected, and a determination as to whether to continue first processing is made on the basis of the collected capability information. If it is determined not to continue the first processing, an end message is sent to terminate the first processing.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: July 31, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsuhiko Sakai
  • Patent number: 8233497
    Abstract: A communication control apparatus controls radio communications with other communication device through a relay device. The communication control apparatus includes a transmission control unit that notifies a data transmission to the relay device, and performs the data transmission to the relay device when the transmission control unit receives a response to the notification from the relay device indicating that the data transmission is possible, and stops a data transmission when the transmission control unit receives a response to a notification made by another communication device from the relay device, a collision conjecture unit that conjectures a collision of frames at the data transmission in accordance with a predetermined condition, and a threshold value control unit that sets a threshold value to determine an assertion or a negation of the transmission control unit in accordance with a result of the conjecture of the collision.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: July 31, 2012
    Assignee: Fujitsu Limited
    Inventors: Takuma Ueba, Toru Uchiyama