Patents Examined by Andy Lee
  • Patent number: 7123589
    Abstract: Methods which determine network performance by determining not only the transit delay between nodes in a network but also the variance, or jitter, of such transit delays. A common node, usually a network management computer (NMC), sends out a signal to a first node of interest and measures the time before it receives an acknowledgment from the first node. The NMC then sends out a similar signal to a second node of interest and similarly measures the time required to receive an acknowledgment. Based on these two measurements, the transit delay between the first and second nodes can be calculated if the first node lies on the path between the NMC and the second node or vice versa. For a multiple node communications path, the total transit delay between any two nodes is the sum total of the transit delays between adjacent nodes lying on the path.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: October 17, 2006
    Assignee: Peregrine Systems, Inc.
    Inventors: Nicholas W. Dawes, Michael Slavitch, Arvind Ramaswamy
  • Patent number: 7123629
    Abstract: In the broadband network access device for transmitting narrowband, low-frequency voice signals and broadband, higher-frequency data signals, the voice data is sampled in the data clock pattern and subsequently decimated. The transmission of the data which has already been decimated to the voice clock to the voice DSP (DSP) is still carried out in the data clock pattern. The conversion to the voice clock pattern is carried out in a synchronization interface (SM), directly upstream of the voice DSP. The same applies correspondingly in the opposite direction of transmission. The invention is used in xDSL methods, for example ADSL.Lite.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: October 17, 2006
    Assignee: Infineon Technologies AG
    Inventors: Christian Panis, Christian Schranz, Herbert Zojer, Manfred Preitnegger
  • Patent number: 7103062
    Abstract: An intercom system utilizing peer-to-peer computer network hardware that shares bandwidth between digital audio transport and inter-processor data communications on a common time-division-multiplexed (TDM) parallel bus. The system hardware automates symmetric, simultaneous, variable-length data block transfers among all of the microprocessor-controlled cards in the system. These cards communicate without intervention by or assistance from a central controller or intermediary communications processor, thereby improving system throughput and reliability and decreasing system complexity. An additional benefit of the communication scheme employed herein is that all system cards automatically track changes in the population of other cards in the system. The intercom system described employs a Configuration Card connected to a configuration computer to provides the system supervisor with the ability to quickly configure the system for a particular use without altering the system's hardware configuration.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: September 5, 2006
    Assignee: Clear Com
    Inventors: Timothy Lee Erickson, John Franklin Anthony Jurrius, Lewis Clark McCoy
  • Patent number: 7103065
    Abstract: A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: September 5, 2006
    Assignee: Broadcom Corporation
    Inventors: Thomas J. Quigley, Jonathan S. Min, Lisa V. Denney, Henry Samueli, Sean F. Nazareth, Feng Chen, Fang Lu, Christopher R. Jones
  • Patent number: 7085294
    Abstract: A mechanism for synchronizing transmission of frames in a telecommunications network including a mobile station, a radio network controller, at least one base station. The mobile station and each base station have a corresponding timing reference. The mechanism includes or performs the steps of establishing a connection-specific timing reference which is common to all nodes involved in the connection; determining, for the base stations an offset between the timing reference of the base station in question and the CFN; and using the offset in the base stations, to compensate for the difference between the timing references.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: August 1, 2006
    Assignee: Nokia Networks Oy
    Inventors: Fabio Longoni, Jukka Vialén, Valtteri Niemi, Jukka Ranta
  • Patent number: 7065050
    Abstract: A method and apparatus for controlling data flow in a network switch, wherein the method includes the steps of determining if a quantity of queued data for a port has exceeded a first predetermined threshold, disabling a data flow to the port if the quantity of queued data is determined to have exceeded the first predetermined threshold, and re-enabling the data flow to the port upon satisfying a predetermined spatial requirement and a predetermined temporal requirement. The apparatus includes at least one queue in connection with the at least one data port interface for receiving data transmitted to the at least one data port interface, and a memory management unit in connection with the at least one queue.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: June 20, 2006
    Assignee: Broadcom Corporation
    Inventor: Joseph Herbst
  • Patent number: 7058058
    Abstract: A system and method that optimizes transmission control protocol (TCP) initial session establishment without intruding upon TCP's core algorithms. TCP's initially session establishment is accelerated by locally processing a source's initial TCP request within the source's local area network (LAN). A control module relatively near the source's local area network (LAN) and another control module relatively near a destination's LAN are utilized to complete the initial TCP session establishment within the source and the destination's respective LANs, thereby substantially eliminating the first round-trip time delay before the actual data flow begins. The first application-layer data packet thus can be transmitted at substantially the same time as the initial TCP request.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: June 6, 2006
    Assignee: Juniper Networks, Inc.
    Inventors: Balraj Singh, Amit P. Singh, Vern Paxson
  • Patent number: 7046699
    Abstract: A system for performing Bit Interleaved Parity-8 (BIP-8) computation on large concatenated payloads, in a processing node of an optical communications networks. The BIP-8 computation system comprises storage means associated with each processing strip for allowing the comparison between calculated and transmitted frame error check values to be delayed.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: May 16, 2006
    Assignee: Nortel Networks Limited
    Inventors: Luca R. Diaconescu, Ronald J. Gagnon
  • Patent number: 7035215
    Abstract: The present invention proposes a method for synchronization adaptation of asynchronous digital data streams comprising the steps of providing a first digital data stream (PCM_IN) at a first sample rate (CLK—1); inputting said first digital data stream (PCM_IN) to a sample rate conversion means (SRC); supplying data output from said sample rate conversion means (SRC) to a processing element (BUFFER); storing said supplied data into said processing element (BUFFER); and outputting said data stored in said processing element as a second digital data stream (PCM_OUT) at a second sample rate (CLK—2), with said first and said second sample rates (CLK—1, CLK—2) being different from each other; and is characterized by the further steps of detecting a state (BUFFER_STATUS) of said processing element (BUFFER); and controlling said sample rate conversion means (SRC) dependent on the detected state of said processing element.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: April 25, 2006
    Assignee: Nokia Corporation
    Inventor: Tomi Engdahl
  • Patent number: 7035271
    Abstract: Method and apparatus for generating unique id packets in a distributed processing system. A method for facilitating processing over a network includes generating at a server location on the network a pointer that defines an information profile on the network. The pointer is then associated with the information profile, and the pointer and the associated information profile transmitted to at least two locations on the network. The pointer can then be transmitted to one of the at least two locations on the network from another location on the network during a processing operation on the network for the purpose of processing a network transaction at the receiving one of the at least two locations on the network, which network transaction requires the associated information profile, such that only transmission of the pointer is required for the processing operation.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: April 25, 2006
    Assignee: Atitania Ltd.
    Inventor: Diane L. Peterson
  • Patent number: 7023876
    Abstract: A Point-to-point protocol configured to provide communication exchange between a first device and a second device. The point-to-point protocol is configured to negotiate an exchange rate and establish a connection for the communication exchange between the first and second device. As system dynamics change, the point-to-point protocol is also configured to permit application programs in the first device and the second device to request renegotiation of the exchange rate at any time. The point-to-point protocol is also configured to provide confirmation to a sending application program that information was delivered to a receiving application program.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: April 4, 2006
    Assignee: Quantum Corporation
    Inventors: David Ray Berry, Daniel Brian McGee, Susan Jane Gray
  • Patent number: 7020148
    Abstract: A data transferring apparatus includes a ring bus, which circularly transfers data by holding in a slot to one direction and a plurality of nodes connected to the ring bus. Each of the plurality of nodes includes a detector and a controller. The detector detects whether or not data destined for a self-node is held in a slot arrived to another node connected to an upstream side of the self-node. The controller captures the data destined for the self-node from the slot when the detector detects presence of the data destined for the self-node and the slot arrives to the self-node.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: March 28, 2006
    Assignee: NEC Electronics Corporation
    Inventor: Mitsuhiro Yamamoto
  • Patent number: 7020158
    Abstract: The methods of the invention include providing a state machine on chip with a SONET/SDH mapper and providing means whereby a plurality of members of a VCG can share the same state machine. The apparatus of the invention preferably includes a “smart” time wheel for granting access to the single state machine and memory for storing state information for each of the VCG members. A TCM (transmit configuration management) block is provided which interrelates the state change of one member with all of the other members of the VCG by reference to a plurality of status registers, one for each member of the VCG. The TCM block includes a single module which is shared by all VCG members. The “smart” time wheel is connected not only to the shared state machine but also to the single TCM module and the status and configuration registers.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: March 28, 2006
    Assignee: Transwitch Corporation
    Inventor: Christophe Rouaud
  • Patent number: 7020115
    Abstract: A communication system for communication using wireless signals in a fast macrodiversity switching environment. The wireless signals include downlink signals to and uplink signals from mobile stations where the wireless signals have bursts in time slots. In the communication system, a plurality of transceiver stations have broadcast channels (non-switched) and dedicated channels (switched) for the wireless signals. A zone manager controls the fast macrodiversity switching of bursts in dedicated channels among transceiver stations. The fast macrodiversity switching causes the bursts to have time shifts that are of a magnitude to cause unwanted burst overlap. A macrodiversity timing control controls the timing of bursts, to reduce burst overlap, in dedicated channels that have been dynamically switched timing problem.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: March 28, 2006
    Inventors: Gopal Chillariga, Bhupal Kanaiyalal Dharia, Gerhard Albert Koepf, Lance Kazumi Uyehara
  • Patent number: 7016362
    Abstract: A communications system that receives information (e.g., TCP/IP-compatible audio, video, and data applications) from a high-speed wide-area network (e.g., an existing cable, DSL, or satellite network) and communicates at least a portion of the information to a wireless device. The information includes information having a first characteristic and information having a second characteristic. The system has at least one switch in communication with the network, where the switch is configured to receive the information and control the flow of the information based in part on the first and second characteristics. The system further includes an access point in communication with the at least one switch. The access point has a controller and an antenna, and is configured to receive at least a portion of the information from the network and to wirelessly transmit at least a portion of the received information to the wireless device.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: March 21, 2006
    Assignee: Lockheed Martin Corporation
    Inventor: Nader Mehravari
  • Patent number: 7012906
    Abstract: The frame words of the preferred embodiment are especially suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and cross-correlation functions of frame words, double maximum values equal in magnitude and opposite polarity at zero and middle shifts are obtained. This property can be used to slot- by-slot, double-check frame synchronization timing, single frame synchronization and/or channel estimation and allows reduction of the synchronization search time. Further, the present invention allows a simpler construction of a correlator circuit for a receiver.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: March 14, 2006
    Assignee: LG Information & Communications, Ltd.
    Inventor: Young-Joon Song
  • Patent number: 7012913
    Abstract: Apparatus, and an associated method, for determining an allowable packet size of data packets communicated by a mobile host to a correspondent host. Path MTU discovery is performed at a network-based proxy on behalf of the mobile host. Once the path MTU is determined, an ICMPTv6 message is sent to the mobile host to inform the mobile host of the allowable packet size.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: March 14, 2006
    Assignee: Nokia Corporation
    Inventor: Jagadish Maturi
  • Patent number: 7006450
    Abstract: Disclosed are systems and methods for associating querying switches with responsive access nodes in a telecommunications network (10) having a switch pool (18). The methods include techniques for assigning a switch (12) of the switch pool (18) as a handling switch for queries received from the plurality of access nodes (14). The handling switch directs queries to respective target access nodes (14). The handling switch also receives responses from target access nodes. Techniques are provided for reassignment of the handling switch from among switches (12) of the switch pool (18) on the basis of various criteria such as, for example load or transaction count. Examples of the invention in the context of a Global System for Mobile Communications (GSM) network (10) having a Mobile Switching Center (MSC) pool (18) are described.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: February 28, 2006
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jo Kuster, Klaus Turina, Dimitrios Papadimitriou
  • Patent number: 7006441
    Abstract: A node in a network running a link-state routing protocol identifies certain routing control messages and stores the identified messages in separate queues. The queues are weighted such that each message type is allotted a predetermined amount of processing overhead to optimize the message processing by a node. In one embodiment, the node processor processes the queued messages in accordance with the entries in a weighted round robin polling table. An upper limit of processing time can be specified for each visit to a particular message queue.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: February 28, 2006
    Assignee: AT&T Corp.
    Inventors: Gagan Lal Choudhury, Anurag S. Maunder
  • Patent number: RE39164
    Abstract: A method and system for transmitting packet data over a cellular telecommunications network is presented. A novel medium access control (MAC) logical layer is implemented between a service option layer and multiplex sublayer. The MAC layer handles the multiple accesses of packet users over selected dedicated traffic channels. The MAC layer provides a multiple access control function for packet data users only. Users requiring only circuit switched services (voice calls) are not serviced through the MAC layer multiple access control function. If a user has simultaneous circuit switched and packet data services operating, the MAC layer multiple access control function handles the packet data services, while the circuit switched services are handled simultaneously by bypassing the MAC layer multiple access control function.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: July 11, 2006
    Assignee: Nokia Mobile Phones Limited
    Inventors: Mark Cheng, Zhi-Chun Honkasalo