Patents Assigned to Nortel Networks
  • Patent number: 7941531
    Abstract: A method resolves collisions in a networking system that includes a plurality of entities operable to transmit an intention to reserve a resource. A first request to reserve resources, which includes a listing of the resources along the first transmission path and a first intention priority value, is broadcast through the networking system. The first intention priority value is determined as a function of other intention priority values previously broadcast through the networking system. A second request is received. The second request includes a second intention priority value and at least one of the same resources included in the first request, thereby indicating a collision. The collision is resolved by comparing the first intention priority value to the second intention priority value. If the collision is resolved in favor of the first request, data is routed through the networking system using the resources along the first transmission path.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: May 10, 2011
    Assignee: Nortel Networks Limited
    Inventors: Emre Gunduzhan, Peter Ashwood-Smith
  • Patent number: 7941150
    Abstract: A method and system for allocating shareable wireless transmission resources. A resource pool is established. The resource pool is divided into a plurality of physical layer allocation units usable for wirelessly transmitting control information and traffic data. The allocation units are assigned at the media access control layer for the wireless transmission of the control information and traffic data. The system and method of the present invention also allows mobile stations to be dynamically grouped into multicast groupings to reduce system overhead resource requirements.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: May 10, 2011
    Assignee: Nortel Networks Limited
    Inventors: Hang Zhang, Jianglei Ma, Ming Jia, Mo-Han Fong, Peiying Zhu, Wen Tong
  • Patent number: 7940822
    Abstract: A method of estimating an injection power of seed light injected into an injection-seeded transmitter. A back face monitoring (BFM) response of the injection-seeded transmitter is determined, and data representative of the BFM response stored in a memory. During run-time, a controller of the injection-seeded transmitter, detects a temperature of the injection-seeded transmitter and an instantaneous BFM current. BFM response data is obtained from the memory based on the detected temperature, and the seed light injection power estimated based on the obtained data and the detected instantaneous BFM current.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: May 10, 2011
    Assignees: Nortel Networks Limited, LG-Nortel, Co. Ltd.
    Inventors: Bin Cao, Douglas James Beckett, Tom Luk, Rong Chen
  • Patent number: 7936680
    Abstract: After statically provisioned paths are created through an Ethernet network, trunks may be created to extend along those paths. The trunks extend between pairs of NNI interfaces on either end of the path, and Ethernet OAM may be run over the trunks to detect connectivity along the paths. Service instances and service groups may be provisioned over particular paths through the network. Each service instance/service group is associated with a trunk and the Ethernet OAM service on the trunk may be used to provide Ethernet connectivity OAM for the service instance/service group. Upon detection of a failure on the trunk, the service instances/service groups associated with the trunk may be caused to failover to an alternate path through the network. Thus, a single Ethernet OAM service instance may be used to provide connectivity verification so that connectivity detection does not need to be performed on each individual service instances/service group.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: May 3, 2011
    Assignee: Nortel Networks Limited
    Inventor: John Osswald
  • Patent number: 7936881
    Abstract: A method for transmitting signaling information, such as cryptographic key synchronization information, over a data path of a network, the data path having an originating end and a terminating end. The method uses in-band signaling to transmit the signaling information from the originating end of the data path to the terminating end of the data path without consuming any bandwidth of the data path. More specifically, the method includes the steps of receiving user data to be transmitted over the data path and encrypting this user data with a cryptographic key, thereby generating cipher data. The method next includes processing the cipher data such that the cipher data includes the signaling information, and mapping the cipher data including the signaling information into a traffic unit for transmission over the data path.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: May 3, 2011
    Assignee: Nortel Networks Limited
    Inventor: Michael Mayer
  • Patent number: 7936720
    Abstract: A method and system for connection management in a wireless data network, such as a 1xEV-DO network adds connections to new network sectors upon receipt of a connection request from an active terminal, but removes data connections that the active terminal requests to be dropped only after confirmation from the active terminal that a channel allocation message has been received and applied. The active network maintains an active set of connections that is at least as large as the active set maintained by the active terminal and does not initiate a connection termination if no confirmation of the channel allocation message is received. This allows for a reduction in the number of dropped connections.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: May 3, 2011
    Assignee: Nortel Networks Limited
    Inventors: Xixian Chen, Weigang Li, Vasanta Chivukula, Shiva Mirzaei-Rezaei, Brian Troup, Miroslav Budic, Yong Zhou, Ryan Santa
  • Patent number: 7933396
    Abstract: Telephone network service logic relating to calls over the telephone network to a customer terminal, uses both terminal functions and network functions. The terminal has a service logic script for execution at the terminal to control the terminal functions. To control the execution of this script remotely from the network, a script-control message is determined and sent over the telephone network to the terminal. This may use the GR30 message format, with an additional call qualifier specific to the terminal service logic script, and the type of control being requested, e.g., start execution or terminate the script. This enables the reliability of the interaction between the service logic at the network side, and the service logic script at the terminal to be improved. This enables announcement type services to be provided in which a loudspeaker on the terminal can be remotely controlled to make verbal announcements without requiring customer action to lift a receiver.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: April 26, 2011
    Assignee: Nortel Networks Limited
    Inventors: Bernard Chin, Brian Buckler, Sandro Cianci
  • Patent number: 7933279
    Abstract: A communications network arrangement provides voice over IP or voice over ATM services. The network arrangement comprises a first media gateway controller controlling a first gateway and provided with a first operating protocol, a second media gateway controller controlling a second gateway and provided with a second operating protocol, and a gateway address translator incorporating proxies for the first and second gateways. The gateway address translator provides a relay function for messaging between each media gateway controller and its corresponding gateway, and a virtual bearer function for messaging between the media gateway controllers. This facilitates inter-working between products supplied by different vendors.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: April 26, 2011
    Assignee: Nortel Networks Limited
    Inventors: Patrick D Bradd, Bryan J Miller, James Shields
  • Patent number: 7933883
    Abstract: This invention relates to an advertisement machine which provides advertisements to a user searching for desired information within a data network. The machine receives, from a user, a search request including a search argument corresponding to the desired information and searches, based upon the received search argument, a first database having data network related information to generate search results. It also correlating the received search argument to a particular advertisement in a second database having advertisement related information. The search results together with the particular advertisement are provided by the machine to the user.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: April 26, 2011
    Assignee: Nortel Networks Corporation
    Inventors: Richard Prescott Skillen, Frederick Caldwell Livermore
  • Patent number: 7933236
    Abstract: The present invention provides a method for generating routing paths in a multi-hop network. The multi-hop network includes a base station, at least one relay station, and at least one non-relay mobile station. The routing paths are paths between the base station and the at least one non-relay mobile station via the at least one relay station. The base station broadcasts a path discovery message (PDM) including a path list with a starting point of the path list being the base station. Each of the relay stations receives the PDM and updates the PDM by adding their own respective node identifier to the path list and broadcasting the updated PDM. The PDMs eventually reach the non-relay mobile station. The non-relay mobile stations reply to the base station by sending the base station the updated path list between the base station and the non-relay mobile station.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: April 26, 2011
    Assignee: Nortel Networks Limited
    Inventors: Guo Qiang Wang, Shiquan Wu
  • Patent number: 7933275
    Abstract: A computer data signal including a generic element identifier, a plurality of task-specific data, a variable length identifier and a multi-use data type identifier. The generic element identifier is configurable to identify an information element containing the generic element identifier as a generic information element. The variable length identifier is configurable to indicate a number of the plurality of task-specific data. The multi-use data type identifier is configurable to indicate a type of the plurality of task-specific data.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: April 26, 2011
    Assignee: Nortel Networks Limited
    Inventor: Elizabeth Chamberlain
  • Publication number: 20110090850
    Abstract: A system and method for adaptively managing frame size in a wireless multihop network is disclosed. In one embodiment, a packet is transmitted from a source to a destination. A acknowledgement packet is received and a successful acknowledgement packet counter is incremented if the acknowledgement packet arrives prior to a time-out of a timer. A frame size is increased if the successful acknowledgement packet counter reaches a specified value. If the acknowledgement packet arrives after the time-out of the timer, the successful acknowledgement packet counter is reset and the frame size is decreased. These procedures can be repeated until the frame size is greater than or equal to a maximum frame size or less than or equal to a minimum frame size.
    Type: Application
    Filed: December 28, 2010
    Publication date: April 21, 2011
    Applicant: Nortel Networks
    Inventors: Tricci So, Kelvin Kar-Kin Au, Shalini Periyalwar, Peter Hazy, Sophie Vrzic, Hongyi Li
  • Publication number: 20110089924
    Abstract: A module hot swap circuit includes a low voltage-drop rectifier adapted to receive either positive or negative voltages of different absolute values. The rectifier is coupled to a power manager that provides dual startup/shutdown voltage thresholds and inrush current limiting. A detector prevents reverse current flow allowing the module to hold up during input voltage drop-outs.
    Type: Application
    Filed: December 21, 2010
    Publication date: April 21, 2011
    Applicant: Nortel Networks Limited
    Inventor: Charles E. Norman
  • Patent number: 7929443
    Abstract: A system for providing session based resource allocation in a core or edge networking device are disclosed. Session awareness is provided in networking devices by session control signal interception and interpretation, followed by session based resource commitment, session based data packet treatment, and session management within the networking devices. The session awareness provided to networking devices through the convergence software provides the networking devices with the ability to differentiate between packets belonging to different communication sessions, and to provide the services needed for each committed session.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: April 19, 2011
    Assignee: Nortel Networks Limited
    Inventor: Monish Anumala
  • Patent number: 7929917
    Abstract: A method for operating an integrated transceiver, comprising coupling an operating transmitter and an operating receiver within the integrated wideband receiver, inputting a signal into the operating transmitter, performing a first conversion of the signal, wherein the signal is converted into a second signal, transmitting the second signal into the operating receiver, performing a second conversion of the signal, wherein the signal is converted into a third signal, transmitting the third signal into the operating transmitter, and adjusting the operating transmitter.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: April 19, 2011
    Assignee: Nortel Networks Limited
    Inventors: Bradley John Morris, Edward M. Sich
  • Patent number: 7929407
    Abstract: Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: April 19, 2011
    Assignee: Nortel Networks Limited
    Inventors: Jianglei Ma, Wen Tong, Ming Jia, Hua Xu, Peiying Zhu, Hang Zhang
  • Patent number: 7929971
    Abstract: Parameters for the propagation channels between each mobile terminal (14, 14A, 14B) and several fixed transceivers (13) are measured and a report message transmitted to a radio network controller (12), indicating at least one part of the measured parameters. The ratio network controller processes the report messages. The parameters measured for each fixed transceiver are a propagation profile, including at least one propagation path associated with a reception energy and the parameters given in the report messages for at least one transceiver, comprise data on the energetic distribution in the propagation profile, taken into account by the radio network controller in processing.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: April 19, 2011
    Assignee: Nortel Networks Limited
    Inventors: Thierry Lucidarme, Nidham Ben Rached, Pierre Roux
  • Patent number: 7924725
    Abstract: Maintenance entities may be defined between customer or provider flow points for performance management on an Ethernet network. The maintenance entities may be defined for access link, intra-domain, and inter-domain, and may be defined on a link or service basis. The maintenance entities may be used to monitor performance within a network or across networks, and may be used to monitor various performance parameters, such as frame loss, frame delay, frame delay variation, availability, errored frame seconds, service status, frame throughput, the number of frames transmitted, received or dropped, the status of a loopback interface and/or the amount of time a service has been unavailable. Several management mechanisms may be used, and the measurements may be collected using a solicited collection method, in which a responses are required and collected, or an unsolicited collection method in which a response is not required.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: April 12, 2011
    Assignee: Nortel Networks Limited
    Inventors: Dinesh Mohan, Marc Holness
  • Patent number: 7924715
    Abstract: Domains (multiple collaborating service providers) create service offerings between pairs of edge nodes that interconnect with other domains in the network. The service offerings may specify the available bandwidth, quality of service, reliability, available security, price, subscriber and service contextual specific and other SLA information. When a new service is to be created, the service definition is used along with information about the available service offerings to determine a set of networks to implement the service. Information associated with the service offerings may be flooded to all other networks. Alternatively, the service offering information may be provided to a trusted third party (SLA broker) which may provide SLA services on the network to select sets of domains to implement inter-domain services, and may also proxy to set up the service for the SLA requesting party.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: April 12, 2011
    Assignee: Nortel Networks Limited
    Inventors: Ravishankar Ravindran, Francois Blouin, Delfin Montuno
  • Patent number: 7924935
    Abstract: Method and apparatus for determining a downlink channel response in an orthogonal frequency division multiplexing access (OFDMA) system. The method and apparatus uses the uplink quality indication channel for determining the downlink channel response, or uses round trip pilot relay channel sounding. The uplink quality indication channel may comprise modified mini-tiles. The subscriber station using round trip pilot relay channel sounding sends composite transponder pilots after receiving the DL pilots.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: April 12, 2011
    Assignee: Nortel Networks Limited
    Inventors: Wen Tong, Jianglei Ma, Ming Jia, Peiying Zhu, Hang Zhang, Dongsheng Yu, Hua Xu