Patents Examined by M. Phan
  • Patent number: 6574210
    Abstract: A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set and a quadrature-phase channel set. The in-phase channel set is used to provide a complete set of orthogonal medium rate control and traffic channels. The quadrature-phase channel set is used to provide a high-rate supplemental channel and an extended set of medium rate channels that are orthogonal to each other and the original medium rate channels. The high-rate supplemental channel is generated over a set of medium rate channels using a short channel code. The medium rate channel are generated using a set of long channel codes.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: June 3, 2003
    Assignee: Qualcomm Incorporated
    Inventors: Joseph P. Odenwalder, Franklin P. Antonio, Edward G. Tiedemann, Jr., Yu-Cheun Jou
  • Patent number: 6570887
    Abstract: A method for employing an associative memory to implement a message passing switch. The method comprising the step of receiving data in a time slot. The method also comprising the step of examining an interrupt register to determine if the data is a message. Additionally, the method comprises the step of storing the data in a memory location and transferring the data to an external device.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: May 27, 2003
    Assignee: Intel Corporation
    Inventors: Kalpesh D. Mehta, Krishna Shetty
  • Patent number: 6570867
    Abstract: The invention provides a new cost-effective and efficient framework for network management of telecommunications networks by monitoring the network-level concepts of routes and paths. The invention is embodied in a route and path management (RPM) system which includes a data collector for collecting data from the individual network elements, a management server for processing the routing data collected into manageable route and path objects and a graphical unit interface (GUI) for allowing a user to manage and monitor routes and paths in the IP network. By monitoring routes and paths, the RPM provides network managers with the added capability of troubleshooting, performance monitoring, service level planning and provisioning packet forwarding paths between any source-destination endpoints in a network.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: May 27, 2003
    Assignee: Nortel Networks Limited
    Inventors: Mark C. Robinson, Larry A. Franko
  • Patent number: 6567393
    Abstract: A CDMA system transmits from a base station to a plurality of mobile stations or from mobile station to base station on a shared frequency band, each mobile station's data being spread by a different spreading code chosen from a set of orthogonal codes. Each receiver in base station or mobile station correlates for its intended data by despreading the signal using its particular one of the orthogonal codes. Under certain transmission delays, the effects of orthogonality may diminish and another mobile station's signal may cross-correlate with a mobile station's signal. If not all of the orthogonal codes are in use, the present invention determines another selection of orthogonal codes that yields lower cross-correlation under current delay conditions.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: May 20, 2003
    Assignee: Nokia Networks Oy
    Inventors: Seppo Hämäläinen, Jussi Vepsäläinen
  • Patent number: 6560244
    Abstract: A subscriber side network termination unit of an access line network and method for operating same having: (a) first interface for the access line network-side transmission and reception of a transmission frame containing data channels: (b) a second interface for the subscriber-side offering of telecommunication payload data channels for telecommunication applications as well as a signaling channels, and (c) a third interface for the subscriber-side offering of data channels for data applications. The signaling channel; of the second interface is employed for the transmission of signaling data for the transmission of payload data via the second interface or the third interface.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: May 6, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventor: Manfred Huber
  • Patent number: 6556586
    Abstract: A messaging system is provided for communicating a message between a first communications unit having a first messaging entity and a second communications unit having a second messaging entity, each messaging entity having a messaging call control means for establishing a messaging communications link with the other messaging entity; and a messaging means for, once the messaging communications link has been established, exchanging messaging information with the said other messaging entity. Also a method is provided for communicating a message between a first communications unit and a second communications unit, the first communications unit having an application layer, a messaging entity and a network layer.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: April 29, 2003
    Assignee: Nokia Mobile Phones Limited
    Inventor: Tuomo Sipilä
  • Patent number: 6556591
    Abstract: A system for synchronizing the upstream burst transmission in a cable system to a time specified by the cable head end is disclosed. The system includes a free running counter within a cable modem (CM) or network interface unit (NIU), along with logic to capture the value of this free running counter at the time a frame of MPEG-2 SYNC data arrives, to create a time tag stored in memory. A computer within the cable modem or network interface unit has access to the time tags in memory and the contents of a time synchronization message from the head end, also stored in memory. The computer contains a program to calculate the value of the local counter that corresponds to a time to transmit commanded by the cable system head end. The system includes logic within the CM or NIU to initiate an upstream burst transmission when the value of the local counter becomes equal to a calculated value, thus causing the cable modem to initiate its upstream burst transmission precisely at the time commanded by the head end.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: April 29, 2003
    Assignee: Conexant Systems, Inc.
    Inventors: Brett Alan Bernath, John Milford Brooks, Manoj Mehta, Yoav Pesach Goldenberg
  • Patent number: 6553040
    Abstract: A system for synchronizing the upstream burst transmission in a cable system to a time specified by the cable head end is disclosed. The system includes a free running counter within a cable modem (CM) or network interface unit (NIU), along with logic to capture the value of this free running counter at the time a frame of MPEG-2 SYNC data arrives, to create a time tag stored in memory. A computer within the cable modem or network interface unit has access to the time tags in memory and the contents of a time synchronization message from the head end, also stored in memory. The computer contains a program to calculate the value of the local counter that corresponds to a time to transmit commanded by the cable system head end. The system includes logic within the CM or NIU to initiate an upstream burst transmission when the value of the local counter becomes equal to a calculated value, thus causing the cable modem to initiate its upstream burst transmission precisely at the time commanded by the head end.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: April 22, 2003
    Assignee: Conexant Systems, Inc.
    Inventors: Brett Alan Bernath, John Milford Brooks, Manoj Mehta, Yoav Pesach Goldenberg
  • Patent number: 6549533
    Abstract: A system and method for managing switched virtual circuits in a virtual circuit switched network. A preferred embodiment method for managing switched virtual circuits comprises determining that a switched virtual circuit has been established in a virtual circuit switched network by a network access device, monitoring the switched virtual circuit while the switched virtual circuit is active, and storing bandwidth and duration information for the switched virtual circuit upon termination of the switched virtual circuit. Another preferred embodiment method comprises receiving a request for establishing the switched virtual circuit from a network access device, generating connection parameters for establishing the switched virtual circuit in the virtual circuit switched network, and sending a reply including the connection parameters to the network access device.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: April 15, 2003
    Assignee: Objective Systems Integrators
    Inventor: Walter Blanton Campbell
  • Patent number: 6542516
    Abstract: In order to perform data transmission between a mobile station and a cellular radio network, the cellular radio network comprises a radio access network (104, 105, 106) for processing messages according to a first protocol, and a core network (101, 102, 103) for processing messages according to a second protocol. The mobile station deals with messages according to the first protocol on given lower protocol layers and messages according to the second protocol on a given higher protocol layer. On an adaptation layer (301) located between the higher protocol layer and the lower protocol layers, there is performed an adaptation where the messages according to the first and second protocol are mapped into each other.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: April 1, 2003
    Assignee: Nokia Mobile Phones Limited
    Inventors: Jukka Vialen, Esko Oikarinen, Janne Pietarila, Mikko Korpela
  • Patent number: 6538990
    Abstract: A Fast Ethernet LAN hub may include a plurality of 100 Mbps ports, each dedicated to a single station or shared with a high speed Ethernet segment. The ports on the Fast Ethernet hub are connected to a low speed 10 Mbps LAN segment through a high speed LAN/low speed LAN bridge port. Because of the mismatch in data transmission rates, the LAN bridge may experience congestion as a result of data flow at the high speed/low speed interface. To minimize the impact on high speed ports, a congestion control system responds to a congested state by identifying 100 Mbps ports currently actively communicating with remote stations through the 10 Mbps port. Any 100 Mbps port identified as supporting a current connection to a network management station is excluded from the set of identified ports. The identified ports are temporarily prevented from sending or receiving data. Other 100 Mbps ports on the hub remain unaffected by the congestion control action.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: March 25, 2003
    Assignee: International Business Machines Corporation
    Inventor: Thomas Joseph Prorock
  • Patent number: 6539021
    Abstract: A network packet switch provides access to a network-based computer system. The network packet switch has a public access port and a private access port, and includes a computer-readable medium containing a computer program product for producing management objects that configure the network packet switch. The switch stores a set of management objects, determines attributes of an organization associated with one or more of the management objects, and defines a subset of management objects associated with the organization based on the attributes of the organization. The switch provides the user with the same access to a set of functions defined by the subset of management objects regardless of whether the user accesses the network packet switch by the public access port or the private access port.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: March 25, 2003
    Assignee: Nortel Networks Limited
    Inventors: Richard J. Kennelly, Kenneth W. Ouellette
  • Patent number: 6539032
    Abstract: A method of isolating target cell signals, the target cell signals originating from a target cell, from active cell signals, the active cell signals originating from an active cell, in a cell search. The method includes receiving a signal, the received signal being either a target cell signal or an active cell signal, generating a local copy of a known active cell signal, and subtracting the local copy of the known active cell signal from the received signal. The subtracting step is executed when a reception time of the received signal corresponds to an expected reception time of the known active cell signal.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: March 25, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Marian Rudolf
  • Patent number: 6529481
    Abstract: A distributed Link-State Routing Protocol (LSRP) system in a packet switch having external communication ports has a first card executing Update process of the LSRP, making database updates, a second card executing Decision process(Shortest Path First (SPF)) of the LSRP, and a communication fabric coupling the cards with each other and the external ports. The LSRP may be an IS-IS system. In some embodiments there are additional cards involved, and the distribution of Link-State functions is over a set of multiple cards. Also in some embodiments there is a Location Service (LS) controller monitoring and configuring cards in the system.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: March 4, 2003
    Assignee: Pluris, Inc.
    Inventors: Bora Akyol, Puneet Agarwal, Les Ginsberg
  • Patent number: 6529530
    Abstract: When a CPU core 53 of a node detects change of data which comes into the node from a load 60 connected thereto on the input side, and thereby the CPU core 53 and a transmission control circuit 52 wake up, the node transmits a frame for waking-up to a transmission line 4. However, when the node receives a frame for waking-up from another node via the transmission line 4 and thereby wakes up, the node does not transmit a frame for waking-up. Thus, an increase in traffic at the time of waking up is reduced and data transmission in a normal operation mode is started soon, so that the speed of data transmission is increased.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: March 4, 2003
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Eiji Ichii, Hiroo Moriue
  • Patent number: 6529486
    Abstract: A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for interconnecting the trunked transmission communications systems into a wide area network that provides an expanded feature set of radio communications capabilities. The trunked radio repeater system including a protocol supporting communications for repeaters and/or subscribers conducting communications using existing protocols, such as the Logic Trunked Radio (LTR) protocol and supporting additional special functions.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: March 4, 2003
    Assignee: Transcrypt International/E.F. Johnson Company
    Inventors: Keith W. Barnes, Rory A. Smith, Mervin L. Grindahl
  • Patent number: 6526046
    Abstract: A gateway for communicating telecommunication information between a telecommunication network and customer premises equipment includes a telecommunication interface and a packetization module. The telecommunication interface receives first telecommunication information for a first subscriber and second telecommunication information for a second subscriber.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: February 25, 2003
    Assignee: General Bandwidth Inc.
    Inventor: A. J. Paul Carew
  • Patent number: 6526070
    Abstract: A system for synchronizing the upstream burst transmission in a cable system to a time specified by the cable head end is disclosed. The system includes a free running counter within a cable modem (CM) or network interface unit (NIU), along with logic to capture the value of this free running counter at the time a frame of MPEG-2 SYNC data arrives, to create a time tag stored in memory. A computer within the cable modem or network interface unit has access to the time tags in memory and the contents of a time synchronization message from the head end, also stored in memory. The computer contains a program to calculate the value of the local counter that corresponds to a time to transmit commanded by the cable system head end. The system includes logic within the CM or NIU to initiate an upstream burst transmission when the value of the local counter becomes equal to a calculated value, thus causing the cable modem to initiate its upstream burst transmission precisely at the time commanded by the head end.
    Type: Grant
    Filed: October 9, 1999
    Date of Patent: February 25, 2003
    Assignee: Conexant Systems, Inc.
    Inventors: Brett Alan Bernath, John Milford Brooks, Manoj Mehta, Yoav Pesach Goldenberg
  • Patent number: 6519228
    Abstract: A system verifies and validates PSTN to IP Network services prior to the availability of the services to a plurality of subscribers. A PSTN call generator services a plurality of callers coupled to the PSTN and to a test database. An IP client simulator is coupled to the test database and to an IP Network. A data bus couples the PSTN and the IP Network to a registration server for registering the client and a heartbeat server for tracking the system for heartbeat message. An application server processes test service calls from the PSTN call generator whereby PSTN-IP Network services can be executed for all clients or individual clients as represented by the IP Client simulator for verification and validation of PSTN services to IP Network clients prior to the availability of the services to the clients.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: February 11, 2003
    Assignee: International Business Machines Corp.
    Inventors: Thomas E. Creamer, Peeyush Jaiswal
  • Patent number: 6512754
    Abstract: A wireless data network which provides communications with a Point-to-Point Protocol server is disclosed. The network includes a home network that includes a home mobile switching center, a wireless modem and one or more end system. The wireless modem and the end systems are connected together via an ethernet link. The network also includes a PPP server, wherein PPP information sent from PPP server for the end system is encapsulated buy the wireless modem in an ethernet frame and sent to the end system via the ethernet link.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: January 28, 2003
    Assignee: Lucent Technologies Inc.
    Inventors: Peretz Feder, Haim Ner, Girish Rai