Patents Examined by Toan D. Nguyen
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Patent number: 7933245Abstract: A media independent handover (MIH) device communicates with an 802 technology medium access control (MAC) layer and an 802 technology physical (PHY) layer utilizing an 802 technology management entity (ME) device. Handover information messages are produced by the MIH device. The handover information messages facilitate handover. The 802 technology ME device facilitates encapsulation of the handover information messages. The 802 technology ME device is coupled to the 802 technology MAC layer and the 802 technology PHY layer. The encapsulated handover information messages is sent to other MIH devices messages via the 802 technology ME device.Type: GrantFiled: August 10, 2006Date of Patent: April 26, 2011Assignee: InterDigital Technology CorporationInventor: Alan Gerald Carlton
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Patent number: 7924783Abstract: Two wireless local area networks exhibiting different characteristics link portable or mobile computer devices. An infrastructure network comprising radio base stations, and at least one portable computer device make up the first wireless network, which communicates using spread spectrum frequency hopping communication. A second local area network supports radio communication between a portable computer and peripheral devices with built-in transceivers. The networks use a reservation access protocol that facilitates frequency hopping synchronization, supports adaptive data rate selection based on communication quality, and prevents interference between the wireless networks. In a premises LAN, an infrastructure network comprises radio base stations and a backbone LAN. A higher-power LAN using frequency hopping comprises the infrastructure network and at least one mobile computing device.Type: GrantFiled: November 28, 2000Date of Patent: April 12, 2011Assignee: Broadcom CorporationInventors: Ronald L. Mahany, Guy J. West, Alan G. Bunte, Arvin D. Danielson, Michael D. Morris
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Patent number: 7920471Abstract: A call admission control technique allowing flexible and reliable call admissions at an ATM switch in the case of an ATM network including both QoS-specified and QoS-unspecified virtual connections is disclosed. In the case where a QoS (Quality of Service) specified connection request occurs, an estimated bandwidth is calculated which is to be assigned to an existing QoS-unspecified traffic on the link associated with the QoS-specified connection request. A call control processor of the ATM switch determines whether the QoS-specified connection request is accepted, depending on whether a requested bandwidth is smaller than an available bandwidth that is obtained by subtracting an assigned bandwidth and the estimated bandwidth from a full bandwidth of the link.Type: GrantFiled: September 30, 2009Date of Patent: April 5, 2011Assignee: Juniper Networks, Inc.Inventor: Rei Miyamoto
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Patent number: 7920597Abstract: Aspects of a method and system for low power IDLE signal transmission in Ethernet networks are provided. In this regard, during time periods between transmissions of actual data by a local Ethernet link partner, the local Ethernet Link partner may generate one or more signals, in place of a standard Ethernet IDLE signal, that enable synchronization between Ethernet link partners. In this manner, the generated signals may enable reducing power consumption as compared to standard Ethernet IDLE signals. Accordingly, link activity may be monitored to enable detecting periods when there may be no actual data for transmission and the generated signals may be transmitted. The generated signals may be transmitted at a reduced symbol rate as compared to standard Ethernet IDLE signals. The generated signals may be transmitted via fewer network links as compared to standard Ethernet IDLE signals.Type: GrantFiled: September 21, 2007Date of Patent: April 5, 2011Assignee: Broadcom CorporationInventors: Bruce Conway, Scott Powell
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Patent number: 7920545Abstract: A communication apparatus determines a hibernation period on the basis of the amount of an offset in beacon period start timing among multiple beacon groups. The communication apparatus is placed in a hibernation status in accordance with the determined hibernation period. Thus, an offset in beacon period start timing among the beacon groups that would occur while the device is in hibernation can be prevented and the need for merging beacon groups and decrease in data rate during such merging are prevented.Type: GrantFiled: August 29, 2007Date of Patent: April 5, 2011Assignee: Canon Kabushiki KaishaInventor: Tadashi Eguchi
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Patent number: 7912067Abstract: A clearinghouse server for routing multi-media communications, including telephony calls, between a source device and a destination device via a distributed computer network, such as the global Internet. The clearinghouse server can authorize the completion of a communication from a source device to a destination device and collect usage-related information for the completed communication. In response to an authorization request issued by an enrolled source device, the clearinghouse server can identify one or more available destination devices available to accept a communication from an authorized source device. The clearinghouse server can provide a list of the identified destination devices, typically organized in a rank order, by sending an authorization response to the source device. In turn, the source device can use this list to select a destination device and contact that selected device via the computer network to complete the communication.Type: GrantFiled: November 17, 2005Date of Patent: March 22, 2011Assignee: TransNexus, Inc.Inventors: James P G Dalton, Jr., Stephen Anthony Thomas, Dmitry Isakbayev
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Patent number: 7903586Abstract: In an embodiment, a method is disclosed for operating a network having a group of bridges connected together to form a ring, each bridge having two ports assigned to the ring to form a group of ring ports. The claimed embodiment includes forwarding information through the ring according to one or more spanning tree instances, each instance designating one of the group of ring ports as a respective alternate port that is in a state of discarding. Responsive to learning of a failure by a bridge within the ring, a determination is made, for each spanning tree instance, whether the bridge contains a respective alternate port and if the bridge contains a respective alternate port, changing the state of the respective alternate port to forwarding.Type: GrantFiled: September 26, 2007Date of Patent: March 8, 2011Assignee: Alcatel LucentInventors: Laurence Rose, Roberto Henrique Jacob da Silva
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Patent number: 7894376Abstract: An RF transceiver includes an RF receiver that receives a received signal from an external device, the RF receiver having an AGC module that generates an automatic gain control (AGC) signal based on a strength of the received signal, and a low noise amplifier that amplifies the received signal based on the AGC signal. A processing module generates a transmit power control signal based on the AGC signal. An RF transmitter generates a transmit signal having a selected power level, wherein the selected power level is based on the transmit power control signal.Type: GrantFiled: August 30, 2007Date of Patent: February 22, 2011Assignee: Broadcom CorporationInventor: Ahmadreza (Reza) Rofougaran
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Patent number: 7885194Abstract: A network device may include logic configured to receive a problem report from a second network device, where the problem report includes event data, determine at least one of an action to perform or whether reconfiguration information is associated with the event data in the received problem report and add information to the received problem report to provide a reformatted problem report and transmit the reformatted problem report to a third network device when it is determined that reconfiguration information is not associated with the event data in the problem report.Type: GrantFiled: August 22, 2008Date of Patent: February 8, 2011Assignee: Juniper Networks, Inc.Inventors: Dogu Narin, Siobhan Tully, David Payne
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Patent number: 7876690Abstract: A monitoring system gathers both site-to-site measurements, and agent-to-agent measurements, wherein one or more agents are distributed in one or more sites in a distributed network environment. Site-to-site measurements between two sites, such as site one and site two, are obtained by testing between any agent at site one and any agent at site two. A measurement rate between sites and between agents is determined that allows for the detection of events, such as user perceivable events, without overwhelming the set of agents that form the distributed measurement system. With, for example, a scheduling mechanism used to schedule measurement tests of finite duration, as opposed to continuous streams of measurement packets, for each pair of agents, the test can be used as an indication as to whether the measurement system is overwhelmed.Type: GrantFiled: September 26, 2007Date of Patent: January 25, 2011Assignee: Avaya Inc.Inventors: Stephen H. Ellis, Sean Finn, Kanzhe Jiang, Jose-Miguel Pulido, Faisal Siddiqi
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Patent number: 7876775Abstract: In a particular embodiment, the disclosure is directed to a method of making a digital subscriber line (DSL) connection to a remote network. The method includes detecting the presence of a powered-on network capable device that is connected to a DSL modem; establishing a network connection over a DSL line to the remote network after detecting the presence of the powered on network capable device; terminating the network connection over the DSL line after detecting an absence of network capable devices connected to the DSL modem; and releasing network resources supported by the remote network after the network connection is terminated.Type: GrantFiled: February 12, 2004Date of Patent: January 25, 2011Assignee: AT&T Intellectual Property I, L.P.Inventors: Kenneth Roger Jones, Brian A. Gonsalves, Marc Andrew Sullivan, Philip Ted Kortum, Jeffrey Multach
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Patent number: 7864684Abstract: The invention provides a leaky-bucket method for delivering packets from a first node (A) to a second node (B) in a packet switched network, comprising the steps of: receiving at the first node (A) of at least one transmission comprising buffered packets, and at least one transmission comprising real-time packets; transmitting the received packets to the second node (B) and increase a bucket counter for the bucket, which bucket has a leak rate that is equal to or larger than the byte transmitting ratio of the real-time packets.Type: GrantFiled: December 30, 2005Date of Patent: January 4, 2011Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventor: Sten Onbeck
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Patent number: 7835387Abstract: Digital signal processing based methods and systems for receiving electrical and/or optical data signals include electrical receivers, optical receivers, parallel receivers, multi-channel receivers, timing recovery schemes, and, without limitation, equalization schemes. The present invention is implemented as a single path receiver. Alternatively, the present invention is implemented as a multi-path parallel receiver in which an analog-to-digital converter (“ADC”) and/or a digital signal processor (“DSP”) are implemented with parallel paths that operate at lower rates than the received data signal.Type: GrantFiled: July 1, 2009Date of Patent: November 16, 2010Assignee: Broadcom CorporationInventors: Oscar Agazzi, Venugopal Gopinathan
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Patent number: 7826480Abstract: A method and apparatus for transceiving multiple service data from multiple communication services to a SONET/SDH communication system or network is provided. A SONET/SDH universal framer (SURF) bidirectionally provides communication between a SONET/SDH communication port and multiple service communication ports using their native data format. A provisioning register stores provisioning information describing the communication system and the communication ports. A SONET/SDH byte engine processes complex hierarchical SONET/SDH frames storing intermediate states when it changes to process a byte of data of a different STS-1 equivalent frame in a SONET/SDH STS-N frame. A service byte engine processes the multitude of service data formats and generally its intermediate states are restored, processed, and saved when it changes to process a different data stream or a different frame of data of a given service.Type: GrantFiled: September 8, 2008Date of Patent: November 2, 2010Assignee: Cisco Technology, Inc.Inventors: Jay Sethuram, Amir Nayyarhabibi, Chandra Shekhar Joshi, Rajiv Kane, Richard Joseph Weber, Srinivasa R. Malladi
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Patent number: 7826360Abstract: Various embodiments provide a way to adjust transmission rates of a medium access controller (MAC) to a physical layer (PHY) to accommodate for packet expansions due to encryption that takes place in the PHY. In at least some embodiments, a communication interface between different MACs in a system is re-purposed to allow the PHY to communicate to a system MAC to notify the system MAC to pause and then resume, at an appropriate time, its packet transmissions.Type: GrantFiled: August 18, 2008Date of Patent: November 2, 2010Assignee: Marvell International Ltd.Inventor: Guy T. Hutchison
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Patent number: 7822055Abstract: The Fibre Channel Credit Extender (FCCE) (600) is a network device that is disposed between and connected to an end node (210) and an optical repeater (220). The FCCE (600) contains as many buffer credits as necessary, to solve bandwidth problems in a network. In a situation where maximum bandwidth is required in both directions of a link, the FCCE (600) breaks a single logical link into three physically separated “linklets.” The short-distance linklets attain maximum bandwidth by use of the existing buffer credits of the end nodes. The long-distance linklet attains maximum bandwidth by use of very high receive buffer credits in the FCCEs (600). In this way, only those links that need maximum bandwidth over distances not covered by end-node credit counts need be attached to an FCCE (600). The FCCE (600) contains the optical repeater to gain distance on that link, and contains high credit count receive buffers to gain bandwidth on the link.Type: GrantFiled: September 22, 2008Date of Patent: October 26, 2010Assignee: QLogic Switch Products, Inc.Inventors: William R. George, Steven M. Betker
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Patent number: 7821939Abstract: Congestion is adaptively controlled in a data center Ethernet (DCE) network. Packets are received over at least one virtual lane in the DCE network. An absolute or relative packet arrival rate is computed over a time period. The absolute or relative packet arrival rate is compared to at least a first threshold and a second threshold. If the absolute or relative packet arrival rate increases beyond the first threshold, the packet transmission rate is caused to decrease. If the absolute or relative packet arrival rate is less than a second threshold, the packet transmission rate is caused to increase.Type: GrantFiled: September 26, 2007Date of Patent: October 26, 2010Assignee: International Business Machines CorporationInventors: Casimer DeCusatis, Thomas A. Gregg
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Patent number: 7817537Abstract: A matrix switcher includes a switcher unit having connection switches provided at intersections of input signal lines and output signal lines and a control unit having a main controller and a backup controller. The backup controller operates a Web server program to transfer a setup command to the main controller upon receiving the setup command. The main controller executes: processing of switching a connection relation between the input signal lines and output signal lines in the switcher unit; processing of transferring a switching command to another matrix switcher upon receiving the switching command for another switcher; processing of setting up the matrix switcher upon receiving the setup command for the switcher; and processing of transferring the setup command to another matrix switcher upon receiving the setup command for another switcher.Type: GrantFiled: August 30, 2007Date of Patent: October 19, 2010Assignee: Sony CorporationInventor: Kaoru Sekigawa
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Patent number: 7804827Abstract: The invention relates to a method for ensuring the adequacy of transmission capacity in a digital packet-switched cellular network where both voice sample packets and associated header fields are transmitted in real time in one and the same transmission channel. The invention also relates to a terminal employing the method. In the method, the contents of voice sample packets at the beginning of a speech spurt are partly replaced by packet header field data in situations where the combined bit count of voice sample data and packet header data exceeds the transmission capacity of the transmission channel.Type: GrantFiled: January 20, 2004Date of Patent: September 28, 2010Assignee: Nokia CorporationInventors: Jari Vallström, Markku Vimpari, Pekka Kuure, Marko Saarenpää
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Patent number: 7782844Abstract: The present invention provides a method and apparatus for detecting and decoding data. The method comprises: receiving a set of data signals from an external data source; detecting a size of said received set of data signals; decoding said received set of data signals; extracting a destination address from said set of data signals; comparing said destination address extracted from said data signals to a known data value; determining whether said received data signals should be received by a host circuitry based upon said comparison of said destination address extracted from said data signals to a known data value; generating at least one status signal alerting said host circuitry of said determination that said received data signals should be received by said host circuitry; and waking up said host circuitry upon a determination that said received set of data is addressed to said host circuitry.Type: GrantFiled: January 5, 1999Date of Patent: August 24, 2010Assignee: GlobalFoundries, Inc.Inventor: David W. Smith