Patents Examined by Seema S. Rao
  • Patent number: 8345628
    Abstract: A method for implementing MIP registration or deregistration includes obtaining, by a physical entity in which a destination MIP Foreign Agent (FA) resides, an identity of a mobile terminal (MT ID) and address information of an anchor proxy mobile node or an authenticator; sending a message carrying the MT ID to the anchor proxy mobile node or the authenticator; and implementing MIP registration or deregistration for the mobile terminal corresponding to the MT ID using a credential, in which the credential corresponding to the MT ID is acquired from the anchor proxy mobile node or authenticator.
    Type: Grant
    Filed: February 18, 2008
    Date of Patent: January 1, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianjun Wu, Bin Xia, Zhengfei Xiao
  • Patent number: 8213438
    Abstract: The invention relates to a method of operating a communication network, the network comprising a plurality of stations which are able to transmit data to and receive data from one another so that a message comprising a plurality of data packets is sent from an originating station to a destination station via at least one opportunistically selected intermediate station. The method makes use of probe signals transmitted from each station on a selected probing channel to which other stations respond to indicate their availability as destination or intermediate stations. A Request to Send message is sent, with a Clear to Send message returned by an available station. The station with data to send opportunistically selects an available station and the selected station uses a Packet Acknowledge message to confirm successful reception of the transmitted data packet. An End-to-End Acknowledge message is sent by the originating station, directly or indirectly, to confirm receipt of said data packets.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: July 3, 2012
    Assignee: IWICS Inc.
    Inventors: James David Larsen, Paul Jonathan Rodman
  • Patent number: 8203961
    Abstract: Methods and apparatus for providing modified timestamps in a communication system. In an aspect, a method includes receiving one or more packets associated with a selected destination, computing an average relative delay associated with each packet, determining a modified timestamp associated with each packet based on the average relative delay associated with each packet, and outputting the one or more packets and their associated modified timestamps. In an aspect, an apparatus is provided for generating modified timestamps. The apparatus includes a packet receiver configured to receive one or more packets associated with a selected destination and processing logic configured to compute an average relative delay associated with each packet, determine a modified timestamp associated with each packet based on the average relative delay associated with each packet, and output the one or more packets and their associated modified timestamps.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: June 19, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Mehmet Yavuz, Matthew S. Grob, Peter J. Black, Rohit Kapoor, Serafin Diaz
  • Patent number: 8179820
    Abstract: An architecture is described for providing IP push-to-talk (IPP2T) service using a wireless local area network (WLAN) serving a plurality of subscriber terminals (STs), having at least one broadband access network terminal (BANT), the BANT coupled to and interacting with at least one of a plurality of Access Points (APs) via a local area network (LAN), the plurality of APs in communication with the plurality of subscriber terminals; a multicast-enabled network, the multicast-enabled network coupled to and interacting with at least one BANT via a broadband access network; an IP network coupled to, and interacting with, the multicast-enabled network via an edge router; and a WLAN mobile radio service (WLMRS) controller (WLMRSC) coupled to and interacting with the IP network via a multicast-enabled router (MR).
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: May 15, 2012
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Albert T. Chow, Robert Raymond Miller, II, John F. Murray, Christopher W Rice
  • Patent number: 8179779
    Abstract: A construction is provided for uplink pilot signals in a cellular network. Three sets of pilot signals are defined, having orthogonality properties that lead to reduced inter-cell interference. In example embodiments, the network has a reuse factor of 3 for pilot signals, with sets U, V, and W of pilot signals assigned to cells in respective reuse classes. The pilots of each set form an orthogonal basis. Some pilots of each class, i.e. those which will generally be assigned to mobile stations near the cell edges, will also form an orthogonal basis with some pilots of each of the other classes.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: May 15, 2012
    Assignee: Alcatel Lucent
    Inventors: Alexei Ashikhmin, Thomas Louis Marzetta
  • Patent number: 8175121
    Abstract: An image processor includes a motion vector acquisition section for acquiring and outputting an image motion vector in pixel or a predetermined block unit from plural frames included in an input image signal; and a frame interpolation section for generating an interpolated frame by using the motion vector provided by the motion vector acquisition section and for combining the interpolated frame with a frame of the input image signal, thereby composing a signal of a new frame sequence. The motion vector acquisition section includes a first motion vector acquisition section acquiring a motion vector by matching process and a second motion vector acquisition section acquiring a motion vector based on a relative misalignment of a predetermined edge component between two temporally successive frames in a specific area of an input image signal's frame.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: May 8, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Nobuhiro Fukuda, Masahiro Ogino, Yoshiaki Mizuhashi, Takashi Oyama
  • Patent number: 8174982
    Abstract: A gateway for mobile communications comprises a cache for storing network data recently downloaded from a network, a foreign agent, and a packet filter that directs requests for the network data from a mobile node to the cache. The packet filter directs the requested network data from the cache to the mobile node by way of the foreign agent, without forwarding the requested network data to a home agent of the mobile node.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: May 8, 2012
    Assignee: Alcatel Lucent
    Inventors: Milind M. Buddhikot, Girish P. Chandranmenon, Seung-Jae Han, Yui-Wah Lee, Scott C. Miller, Luca Salgarelli
  • Patent number: 8174988
    Abstract: A wireless communication device receives a media request from a user and transfers a message to a media server. The media server receives the message, and in response, transfers media to the wireless device in a first set of packets that have a first sequence of packet addresses. The wireless device receives the first set of packets and displays the media. The wireless device displays a QoS control and receives a QoS level from the user, and in response, transfers a message indicating the QoS level to the media server. The media server receives the message, and in response, translates the QoS level into a second sequence of packet addresses and transfers the media to the wireless device in a second set of packets that each have the second sequence of packet addresses. The wireless communication device receives the second set of packets and displays the media.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: May 8, 2012
    Assignee: Sprint Communications Company L.P.
    Inventors: Frederick C. Rogers, Lyle T. Bertz
  • Patent number: 8165174
    Abstract: In a method of demapping a tributary from a first frame into a second frame, the first frame has a plurality of tributary words and a synchronization word, and first and second counters are provided. The first counter is increased by a first value at each dock cycle of the second frame, and reading operations are performed according to the second counter. Synchronization information, generated according to the synchronization word, is used to change between first and second states. When in the first state, the second counter is synchronized to the first counter at each clock cycle of the second frame; and, when in the second state, the second counter is synchronized to the first counter at a predetermined instant of the second frame, the second counter increasing by a second value at each clock cycle of the second frame wherein the reading operation is performed.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 24, 2012
    Assignee: Alcatel Lucent
    Inventors: Luca Gabriele Razzetti, Sonia Rinaldi, Paolo Sorge
  • Patent number: 8165038
    Abstract: The physical connection corresponding to IP tunnels in a network are found by tracing through the device configuration and routing tables at the routers in the network to determine the outbound interface associated with each tunnel endpoint, and then inferring a likely return interface associated with the opposite tunnel endpoint. Having determined the physical devices at the source and destination of each tunnel, the physical path between these source and destination devices is traced from the source toward the destination until the path is terminated at the destination device, or at an interface to an external network. If the path ends at an external network, the path is traced from the destination device toward the source device until a corresponding interface to the external network is reached.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: April 24, 2012
    Assignee: OPNET Technologies, Inc.
    Inventors: James Mark Shaw, Raghavendra B. Uppalli
  • Patent number: 8165160
    Abstract: A method and system, the method including, in some embodiments, calculating, by a message originator, a first check sum byte, appending the first check sum byte to the message, sending the message from the originator to a client over a single wire serial bus, and determining, by the client, a validity of the message from the originator by comparing the first check sum byte with a second check sum calculated by the client.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: April 24, 2012
    Assignee: Intel Corporation
    Inventors: Robert A. Dunstan, John W. Horigan
  • Patent number: 8165588
    Abstract: Frame structures, a method and an apparatus for resource allocation in a wireless communication system based on a full duplex relay are provided. The method for a centralized resource allocation in the wireless communication system based on the full duplex relay includes receiving channel information from a plurality of mobile stations (MSs) and relay stations (RSs); scheduling radio resources for a link between a base station (BS) and the MS and a link between the BS and the RS using the channel quality; constituting a first radio resource region for the link between the BS and the RS and a second radio resource region for the link between the BS and the MS; and scheduling radio resource for a link between the RS and the MS by reusing the first radio resource region. The relay link resource is reused in the full-duplex relay structure, and the system capacity can be raised by minimizing the interference in the resource utilization.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: April 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tak-Ki Yu, Yung-Soo Kim, Sang-Boh Yun, Myeon-Kyun Cho, Chan-Ho Min
  • Patent number: 8165169
    Abstract: Clock Priority Chain Level Systems and Methods are provided. In one embodiment, a method for determining clock priority for a multihost unit distributed antenna system is provided. The method comprises identifying which port of a plurality of ports is receiving a reference clock signal having a highest priority Network Chain Level (NCL) value, wherein the highest priority NCL value indicates a master clock priority level (MCPL) of a host unit providing a Master Clock and a chain level value indicating a chain depth; selecting a system clock reference port from the plurality of ports based on the highest priority NCL value; locking a local clock to a reference clock signal received on the selected system clock reference port; calculating an incremented NCL value based on the highest priority NCL value; and transmitting the incremented NCL value over the plurality of ports.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: April 24, 2012
    Assignee: ADC Telecommunications, Inc.
    Inventors: John M. Hedin, Steven B. Stuart, Jody Forland
  • Patent number: 8159960
    Abstract: A system, method, and apparatus for monitoring performance of a content processing device are disclosed. A system may include a content processing device and a customer premises management system (CMS) in communication with the content processing device. The CMS generally monitors hardware performance, network performance, and video quality parameters of the content processing device. The CMS may determine an operating status of the content processing device from at least one of the hardware performance,network performance, and video quality parameters.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: April 17, 2012
    Assignee: Verizon Patent and Licensing Inc.
    Inventor: Dayalan Cooppan
  • Patent number: 8154989
    Abstract: A method of processing data within a controller for a network can include identifying frames within a data stream within the network (1110) and detecting a deadlock state according to a number of consecutive frames comprising at least one set control bit (1130). The method can include, responsive to detecting the deadlock state, adjusting the at least one control bit within a current frame (1135). Adjusting the at least one control bit clears the deadlock state and generates a modified frame. The modified frame can be output to at least one node within the network (1140).
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: April 10, 2012
    Assignee: Xilinx, Inc.
    Inventors: Robert Bellarmin Susai, Venkata Vamsi Krishna Dhanikonda
  • Patent number: 8154988
    Abstract: In one embodiment, a method includes ingesting a program stream from a program source on a first channel. The method also includes storing the program stream, and receiving notification from a client of unrecoverable error in a stream received at the client. The unrecoverable error corresponds to at least a portion of the stored program stream. The method also includes distributing the corresponding portion of the stored program stream to the client on a second channel in response to the notification.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: April 10, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: John Pickens, William C. VerSteeg
  • Patent number: 8155056
    Abstract: In a wireless communication system, a method and apparatus for controlling traffic congestion includes determining that the traffic congestion at a plurality of geographical locations in the wireless communication network is above a predetermined threshold value. At least one geographical location of the plurality of geographical location is identified, wherein the identification of the at least one geographical location is based on the determination of the traffic congestion in the plurality of geographical location. At least one network node of a plurality of network nodes located in proximity of the identified geographical location is selected and assigned a first level of priority during congestion control.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: April 10, 2012
    Assignee: Motorola Solutions, Inc.
    Inventors: Heinz A. Miranda, Shawn W. Hogberg, Steven Sobieszek
  • Patent number: 8149863
    Abstract: A method is provided for controlling access to a wireless communications medium. The method includes: sampling RF activity on the medium; autocorrelating samples to produce a first value indicative of autocorrelation computed with a first delay substantially matching periodicity of a signal of interest and to produce a second value indicative of autocorrelation computed with a second delay different from the first delay; monitoring the first value to determine whether the first value is possibly indicative of the signal of interest; monitoring the second value to determine whether the second value is indicative of an interferer signal; and preventing transmission of an RF transmit signal on the medium in response to the first value indicating that activity on the medium includes the signal of interest when the second value indicates that activity on the medium does not include an interferer signal.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: April 3, 2012
    Assignee: Marvell International Ltd.
    Inventors: Atul Sahotra, Kedar Shirali
  • Patent number: 8149838
    Abstract: A method is provided for payload header suppression within a wireless network in which a limited number of suppression indices are used to map suppression rules to data streams. Network resources are conserved by implementing precise classification algorithms to correctly identify incoming packets at the wireless device as belonging to a particular data stream, which ensures that a minimum number of suppression indices are utilized. Additionally, network resources are conserved by utilizing sophisticated algorithms for reusing suppression indices when new data streams are detected by the wireless device. One such reuse algorithm involves recycling the suppression index that has been least recently used in transmitting a packet with a suppressed payload header.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: April 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Anthony P. Saladino, Rennie L. Gardner, Michael R. Robinson, Ajay Chandra V. Gummalla
  • Patent number: 8144583
    Abstract: A method is disclosed that enables the avoidance of a processor overload of a telecommunications endpoint device that is susceptible to traffic floods. An enhanced network switch sets the speed on one of its data ports as a specific function of the speeds of the devices that are connected to one or more of its other data ports. This behavior is different from that of network switches in the prior art, in which the data rate of a port in the prior art is auto-negotiated to the highest speed that can be supported by the network elements at either end of the port's connection, regardless of the other devices present. By considering the specific devices that are connected, the enhanced network switch is able to limit the amount of traffic that is directed by an upstream device, such as a router, towards a device with limited processor capability, such as a packet-based phone.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: March 27, 2012
    Assignee: Avaya Inc.
    Inventors: Akshay Adhikari, Sachin Garg, Anjur Sundaresan Krishnakumar, Navjot Singh