Patents Examined by Kerri M. Rose
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Patent number: 7729248Abstract: A scheduler scheduling items to be transmitted by a subscriber station in a wireless network in accordance with bandwidth assigned to the items by a base station in the network. The items to be transmitted by the subscriber station are placed in a queue. The queue has a first section into which items for which a request for bandwidth assignment has been made to the base station are placed, and a second section into which items for which a request for bandwidth assignment has not yet been made to the base station are placed. The scheduler schedules the items in the queue for transmission by the subscriber station in accordance with which section of the queue the items reside.Type: GrantFiled: March 21, 2007Date of Patent: June 1, 2010Assignee: Fujitsu LimitedInventor: Antoni Oleszczuk
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Patent number: 7720106Abstract: A circuit for synchronizing symbols of a received OFDM signal includes a unit configured to detect cross-correlation of a received signal to generate a value of the cross-correlation, a unit configured to obtain synchronous summation of the value of the cross-correlation performed at predetermined intervals, a unit configured to obtain received electric power of the received signal, an autocorrelation electric power obtaining unit configured to obtain autocorrelation electric power of the received signal, a threshold obtaining unit configured to obtain a synchronous summation threshold responsive to the received electric power, and a symbol timing detecting unit configured to identify timing of a peak of the synchronous summation as symbol timing in response to detecting, at the timing of the peak, that the autocorrelation electric power is smaller than the received electric power multiplied by a predetermined factor and that the synchronous summation is larger than the synchronous summation threshold.Type: GrantFiled: August 26, 2004Date of Patent: May 18, 2010Assignee: Fujitsu LimitedInventor: Liang Zhou
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Patent number: 7719965Abstract: Methods and systems for coordinated monitoring of network transmission events. Predetermined information for the network transmission event is obtained at a first network location and the network transmission event predetermined information is provided to a predetermined monitoring location (or server). From the predetermined monitoring location, the predetermined information is provided to other network monitoring devices at one or more other network locations. At the one or more other network locations, the network transmission event, corresponding to the predetermined information obtained at the first location, is monitored. Network transmission event information, corresponding to the predetermined information obtained at the first location, is provided to the predetermined monitoring location from the first location and the other network locations. The monitoring of network transmission can be thereby coordinated.Type: GrantFiled: August 25, 2004Date of Patent: May 18, 2010Assignee: Agilent Technologies, Inc.Inventors: John M. Monk, Timothy M. Bennett, Scott A. Blomquist
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Patent number: 7715447Abstract: Tone detection includes receiving a series of frames having a signal containing a tone and locating a first frame in the series of frames in which there is at least a partial, tone. The signal energy of the first frame may then be compared to the signal energy of a full tone frame or compared to the signal energy of a frame. A start time of the tone in the signal may then be determined. An end time of the tone in the signal may be determined by locating a last frame in the series of frames. The duration of the tone signal may be determined based on the determined start time and end time of the tone in the signal.Type: GrantFiled: December 23, 2003Date of Patent: May 11, 2010Assignee: Intel CorporationInventors: Sui Lam, Kai Miao, Amin Rhemtulla
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Patent number: 7706261Abstract: An active queue management (AQM) process for network communications equipment. The AQM process is queue based and involves applying at a queue size threshold congestion notification to communications packets in a queue of a link via packet dropping; and adjusting said queue size threshold on the basis of the congestion level. The AQM process releases more buffer capacity to accommodate more incoming packets by increasing said queue size threshold when congestion increases; and decreases buffer capacity by reducing said queue size threshold when congestion decreases. Network communications equipment includes a switch component for switching communications packets between input ports and output ports, packet queues for at least the output ports, and an active queue manager for applying congestion notification to communications packets in the queues for the output ports via packet dropping.Type: GrantFiled: August 27, 2004Date of Patent: April 27, 2010Inventors: Jinshen Sun, King-Tim Ko, Guanrong Chen, Sammy Chan, Moshe Zukerman
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Patent number: 7701852Abstract: A method for analyzing performance of a network, e.g., a communications network, is provided. In one embodiment, the method includes measuring detailed information relating to packet delays in routers and reporting the gathered information, for instance, using Simple Network Management Protocol (SNMP). The method hereof provides insight into through-router delays, such insights being particularly useful, for instance, for network providers who may have to comply with allowable delay statistics values across the domains they control.Type: GrantFiled: August 26, 2004Date of Patent: April 20, 2010Assignee: Sprint Communications Company L.P.Inventors: Nicolas Hohn, Darryl Neil Veitch, Konstantina Papagiannaki
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Patent number: 7693058Abstract: A method for enhancing transmission quality of streaming media. A first bandwidth for a first communication link and a second bandwidth for a second communication link of a network are determined. Provided the first bandwidth is greater than the second bandwidth, a first excess bandwidth is utilized to improve transmission quality in the first communication link, wherein said the excess bandwidth is related to a difference of the first bandwidth minus the second bandwidth. Provided the second bandwidth is greater than the first bandwidth, a second excess bandwidth is utilized to improve transmission quality in the second communication link, wherein the second excess bandwidth is related to a difference of the second bandwidth minus the first bandwidth.Type: GrantFiled: December 3, 2002Date of Patent: April 6, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Gene Cheung, Wai-tian Tan
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Patent number: 7693180Abstract: Disclosed are methods and apparatus for translating data within a cable network between a first voice-over-IP (VOIP) protocol used by a user agent and a second VOIP protocol used by a call management server, or other type of call receiver. In one embodiment, data from an SIP (Session Initiation Protocol) user agent is translated for an NCS (Network Call Signaling) call management server. In one implementation, translation mechanisms are provided within the customer premises equipment in which the respective user agent is also configured.Type: GrantFiled: July 24, 2006Date of Patent: April 6, 2010Assignee: Cisco Technology, Inc.Inventors: Hemant Singh, William G. Guckel
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Patent number: 7688762Abstract: In an example embodiment, a number of contending nodes and colliding nodes for a plurality of links of a network is determined. The capacity of each of the plurality of links is determined. A sum of the traffic demand of each of the plurality of links divided the throughput of each of the plurality of links is used to form a cost function for the network. One, or more, of a group consisting of a plurality of frequency assignments, a plurality of transmit powers, and a plurality of clear channel assessment (CCA) values is searched to obtain a global minimum for the cost function. The frequency assignments, transmit powers, and/or CCA values providing the global minimum for the cost function are selected.Type: GrantFiled: March 21, 2007Date of Patent: March 30, 2010Assignee: Cisco Technology, Inc.Inventors: Bretton Douglas, Brian Hart
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Patent number: 7684434Abstract: A method for facilitating a data session in a communications environment is provided that includes initiating, by a first endpoint, a call that is intended for a second endpoint. The method also includes invoking, by the first endpoint, an eCamp-On™ feature in response to the second endpoint being unavailable. The eCamp-On™ feature initiates a new call between the first and second endpoints once the second endpoint is available. Presence data associated with the first endpoint may be leveraged in order to make the new call.Type: GrantFiled: May 3, 2005Date of Patent: March 23, 2010Assignee: Cisco Technology, Inc.Inventors: Shmuel Shaffer, Labhesh Patel
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Patent number: 7684357Abstract: A system and method for reducing idle mode power consumption for mobile stations (MS) that have joined a Multimedia Broadcast/Multicast Service (MBMS) session and are waiting for the session to start. The invention is also directed to reducing the power consumption of an MS for which an MBMS session is inactive. In alternative aspects of the invention, the power consumption of mobile stations is reduced in the absence of ongoing MBMS session activity. Reduced power consumption is achieved by eliminating the need to read notification messages from an MBMS specific notification paging group when the notification message is for a different MBMS session than the paging group that the MS has currently joined.Type: GrantFiled: September 14, 2005Date of Patent: March 23, 2010Assignee: Nokia CorporationInventors: Harri Jokinen, Guillaume Sebire, Rami Vaittinen
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Patent number: 7668085Abstract: A method of Common Rate Control (CRC) command generation considers status bits returned by mobile stations subject to CRC. The status bits from each mobile station, e.g., the Mobile station Status Indication Bits (MSIBs) defined by Release D of the IS-2000 standards, indicate whether the mobile station is capable of increasing its reverse link data rate, and may additionally indicate whether the mobile station has enough data for transmission to warrant a higher rate. Regardless, the status bits indicate how many in a group of mobile stations are capable of increasing their reverse link rates. Thus, a base station's command generation logic can take advantage of the additional knowledge gained from the status bits when generating CRC commands.Type: GrantFiled: August 27, 2004Date of Patent: February 23, 2010Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Rath Vannithamby, Wanshi Chen
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Patent number: 7668208Abstract: The present invention relates to a method for synchronizing packet-based digital data streams. Key idea of the inventive method is to perform a state machine process (S3) with respect to received primary digital data streams (D1-1, D1-2) based on derived time stamp structure data (TSD), thereby synchronization state data (SSD) are generated which are representative for the synchronization state of the received primary digital data streams (D1-1, D1-2).Type: GrantFiled: August 26, 2004Date of Patent: February 23, 2010Assignee: Sony Deutschland GmbHInventor: Frank Moesle
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Patent number: 7660276Abstract: A system and related methods for beamforming in a multi-point communication environment is presented. According to one aspect of the invention, a method comprising identifying one or more target(s) for which a communication signal is intended, identifying one or more other target(s) which may benefit from receipt of the communication signal, and developing a multi-lobe beampattern to transmit the communication signal to the intended target(s) and the identified one or more other target(s).Type: GrantFiled: March 13, 2007Date of Patent: February 9, 2010Assignee: Intel CorporationInventors: Athanasios A. Kasapi, Jason Liu
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Patent number: 7656908Abstract: The present invention is a system and method for enabling multicast synchronization of initially unicasted content. Multiple unicast streams are synchronized in order to convert the unicast streams into a multicast stream. Each unicast stream may be accelerated or slowed down in relation to a reference stream to a common point within each stream upon which the unicast streams are replaced by a multicast stream of the same content.Type: GrantFiled: September 30, 2005Date of Patent: February 2, 2010Assignee: AT&T Corp.Inventor: Lee Begeja
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Patent number: 7656905Abstract: The invention provides an apparatus and method for transparently transporting four plesiochronous Gigabit Ethernet, Fibre Channel or other packet-based data signals over a network. Multiple plesiochronous Gigabit Ethernet data streams are aggregated onto an independent clock source at an ingress circuit through the use of transparent IDLE character insertion. The independent clock is selected such that the output data rate is greater than the composite input data rate of all the plesiochronous data streams. The signals are encapsulated with forward error correction and mapped to a reciprocal FEC interface prior to transport. An egress circuit at the receiving end recovers the modulated signal and extracts the data stream. Each independent data stream is mapped to a local clock domain via IDLE character insertion or removal. Therefore, the input and output signals are transparent and identical in content.Type: GrantFiled: December 24, 2003Date of Patent: February 2, 2010Inventors: Samir Sheth, Brian Royal, Kelly Hawkins
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Patent number: 7649852Abstract: A mobile router is configured for attaching to a selected router in a clustered network (e.g., a mobile ad hoc network) based on identifying a network topology model of the clustered network from received router advertisement messages that include tree information option fields specifying attributes of the network topology model. The mobile router selects which router advertisement originator to attach to based on correlating the attributes of the router advertisement originators relative to identified priorities, and orders the router advertisement originators within a default router list based on the identified priorities. If the mobile router detects a router from a second clustered network, the mobile router advertises to the attachment router that the second clustered network is reachable, enabling the two clustered networks to communicate using a point-to-point link between the respective attachment routers.Type: GrantFiled: January 18, 2007Date of Patent: January 19, 2010Assignee: Cisco Technology, Inc.Inventors: Pascal Thubert, Patrick Wetterwald, Marco Molteni, David Charlton Forster
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Patent number: 7646730Abstract: A sequential iterative methodology is used to generate a solution space with different cost/availability values for multiple network architectures from which an optimal or near-optimal solution can be determined. A modeling module (10) provides a cost value for a network architecture under consideration and, once cost modeling is done, an availability analysis is performed for the architecture under analysis. If a relatively few connections prevent a model from acceptability, the availability analysis module (12) reveals the causing factors of the unsatisfactory availability for those few connections and suggests that the modeling perform further optimisations on those causing factors. This iterative process is repeated until an optimum or near-optimum acceptable solution is found; if no acceptable solution is found, the solutions generated in the availability analysis module are reviewed to find the best available solution.Type: GrantFiled: August 26, 2004Date of Patent: January 12, 2010Assignee: Alcatel LucentInventors: Hakki C. Cankaya, Ana Lardies, Gary Ester
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Patent number: 7636303Abstract: A packet receiving method of a mobile terminal in which the mobile terminal sets a TCP connection with a server for a packet reception, and a PS (protocol stack) task priority is set to be higher than a UI (user interface) task priority to receive packets. Then, the number of packets stored in a reception queue and signals of a signal queue are monitored while receiving packets. When the number of packets or signals reaches an upper threshold value of a certain level, the UI task priority is altered to be higher than the PS task priority to stop the packet reception and to process the received packets. The number of packets stored in the reception queue and signals of the signal queue is also monitored while processing the packets. When the number of packets or signals reaches a lower threshold value of a certain level, the UI task priority is again altered to be lower than the PS task priority to re-start the packet reception.Type: GrantFiled: August 27, 2004Date of Patent: December 22, 2009Assignee: LG Electronics Inc.Inventor: Jong-Kook Kang
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Patent number: 7636326Abstract: A virtual private communications network (VPCN) and method of using the VPCN. The VPCN includes a communications server and at least one communications trunk connecting the communications server to a public telephone network. A web server and one or more digital telephones may be connected to the communications server. A remotely connected device (such as a PC or WAP) communicating with the communications server acts as a locally connected digital telephone. A remote telephone located in the vicinity of the remotely connected device provides telephonic communications in cooperation with the communications server controlled by the remotely connected device.Type: GrantFiled: December 26, 2001Date of Patent: December 22, 2009Assignee: Siemens Communications, Inc.Inventors: Bertram Geck, Francisco Olympio Marcon da Rocha, Robinson Osmar Lima, Luiz Cesar Zaniolo, Enoch Ragin, Jr.