Patents Issued in February 28, 2008
  • Publication number: 20080049592
    Abstract: In an information recording medium comprising at least a substrate, a recording layer, and a resin layer, the substrate is formed with at least a pit corresponding to a read only area 31 and a groove corresponding to a recording/reproducing area 32 without overlapping with each other. A reflectivity of the recording layer is specified to be more than 10%. The recording layer and the resin layer are continuously adhered over both the read only and recording/reproducing areas 31 and 32. The information recording medium is characterized in that both push-pull signal outputs T1 and T2, which are reproduced from the read only area 31 and the recording/reproducing area 32 respectively, are more than 0.1 and satisfy an inequality 1.5?T1/T2?0.5.
    Type: Application
    Filed: October 20, 2007
    Publication date: February 28, 2008
    Applicant: Victor Company of Japan, Limited
    Inventor: Tetsuya Kondo
  • Publication number: 20080049593
    Abstract: In an information recording medium comprising at least a substrate, a recording layer, and a resin layer, the substrate is formed with at least a pit corresponding to a read only area 31 and a groove corresponding to a recording/reproducing area 32 without overlapping with each other. A reflectivity of the recording layer is specified to be more than 10%. The recording layer and the resin layer are continuously adhered over both the read only and recording/reproducing areas 31 and 32. The information recording medium is characterized in that both push-pull signal outputs T1 and T2, which are reproduced from the read only area 31 and the recording/reproducing area 32 respectively, are more than 0.1 and satisfy an inequality 1.5?T1/T2?0.5.
    Type: Application
    Filed: October 22, 2007
    Publication date: February 28, 2008
    Applicant: Victor Company of Japan, Limited
    Inventor: Tetsuya Kondo
  • Publication number: 20080049594
    Abstract: A single-sided double layer disc comprises a first access layer, a second access layer, a bonding layer, and a protective layer. The first and second access layers are used for allowing a driving device to access the disc. The second access layer includes a second substrate having a second coating surface, a reflective layer laminated on the second coating surface, and a second recording layer laminated on the reflective layer. The protective layer, made of metal or semiconductor material, is formed on the second recording layer. The bonding layer is formed between the first access layer and the protective layer for bonding the first access layer and the second access layer such that the second recording layer faces the first access layer.
    Type: Application
    Filed: July 16, 2007
    Publication date: February 28, 2008
    Applicant: PRINCO CORP.
    Inventor: Chih-Feng Lin
  • Publication number: 20080049595
    Abstract: An optical recording medium has a five-layer structure including five recording layers, namely an L0 layer, an L1 layer, an L2 layer, an L3 layer, and an L4 layer in this order from a side farthest away from a laser light incident surface. The materials of the respective recording layers are selected so that the rate of change in transmittance Tb/Ta as taken from the laser light incident surface satisfies 0.93<Tb/Ta<1.07 when recording on the L0 layer among the recording layers, where: Ta is transmittance of laser light to reach the L0 layer when the L0 layer is irradiated with the laser light of optimum recording power after recording marks are formed on all the recording layers closer to the laser light incident surface (being the L1 to L4 layers); and Tb is transmittance of laser light to reach the L0 layer when the L0 layer is irradiated with the laser light of optimum recording power with no recording mark formed on any of the recording layers closer to the laser light incident surface.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 28, 2008
    Applicant: TDK CORPORATION
    Inventors: Koji Mishima, Takashi Kikukawa, Hidetake Itoh
  • Publication number: 20080049596
    Abstract: Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive preceding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal preceding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.
    Type: Application
    Filed: March 29, 2007
    Publication date: February 28, 2008
    Applicant: NEC LABORATORIES AMERICA, INC.
    Inventors: Mohammad A. Khojastepour, Xiaodong Wang, Mohammad Madihian
  • Publication number: 20080049597
    Abstract: This disclosure describes content-adaptive coding and modulation techniques. In particular, this disclosure describes techniques in which both a multimedia coding mode and a physical layer modulation scheme are adaptively selected based on content of a multimedia sequence. When the content changes such that either the coding or the modulation scheme can be improved, the coding and/or modulation may be changed to better optimize to the changed content. In one aspect, this disclosure provides a method of processing multimedia data, the method comprising selecting a multimedia coding mode for an encoder to encode the multimedia data and a physical layer modulation scheme for transmission of the multimedia data based on content of the multimedia data.
    Type: Application
    Filed: January 12, 2007
    Publication date: February 28, 2008
    Applicant: QUALCOMM INCORPORATED
    Inventors: Gordon Kent Walker, Fuyun Ling, Vijayalakshmi R. Raveendran
  • Publication number: 20080049598
    Abstract: A receiver for receiving an orthogonal frequency division multiplexed (OFDM) digital video broadcast (DVB) signal including OFDM symbol sets including data symbols and pilot symbols transmitted using a plurality of sub-carriers, the OFDM DVB signal being transmitted toward the receiver via a transmission channel, the receiver including an input module configured to receive the OFDM DVB signal via the transmission channel, and a channel estimation module coupled to the input module and configured to calculate channel estimates of the transmission channel by performing Fourier transforms on the OFDM symbol sets to produce transformed symbol sets in the frequency domain and by performing minimum mean square error (MMSE) equalization on the transformed symbol sets using a sub-set of the pilot symbols in the OFDM DVB signal.
    Type: Application
    Filed: August 28, 2006
    Publication date: February 28, 2008
    Inventors: Xiaoqiang Ma, Azzedine Touzni
  • Publication number: 20080049599
    Abstract: Systems for tone hopping in a multipoint-to-point orthogonal frequency division multiplexing (OFDM) communication system are provided. In one embodiment, a bidirectional communication system comprises: a first remote unit for communicating with a host unit using OFDM, the host unit communicatively coupled to a plurality of remote units in a multipoint-to-point configuration; the first remote unit including a modulator for modulating up to a plurality of tones with upstream information using orthogonal frequency division multiplexing, wherein the modulator is configured to adjust at least one characteristic of the plurality of tones such that when any tones are transmitted from the first remote unit and at least one other remote unit of the plurality of remote units, the orthogonality of the tones when received at the host unit is improved. The first remote unit switches modulation between tones of the plurality of tones to reduce the impact of using any corrupted tones.
    Type: Application
    Filed: April 20, 2007
    Publication date: February 28, 2008
    Applicant: ADC TELECOMMUNICATIONS, INC.
    Inventors: Mark Dapper, Michael Geile, Terrance Hill, Harold Roberts, Brain Anderson, Jeffrey Brede, Mark Wadman, Robert Kirscht, James Herrmann, Michael Fort, Steven Buska, Jeff Solum, Debra Enfield, Darrell Berg, Thomas Smigelski, Thomas Tucker, Joe Hall, John Logajan, Somvay Boualouang, Heng Lou, Mark Elpers, Matt Downs, Tammy Ferris, Adam Opoczynski, David Russell, Calvin Nelson, Niranjan Samant, Joseph Chiappetta, Scott Sarnikowski
  • Publication number: 20080049600
    Abstract: A channel estimation method and system using linear correlation based interference cancellation combined with decision-feedback-equalization (LCIC-DFE) are provided. The channel estimation method includes generating a first correlation sequence by calculating a linear correlation between a baseband sampled complex signal and a locally stored pseudo-noise signal and obtaining a second correlation sequence by iteratively removing inter-path interference from the first correlation sequence and generating a first channel impulse response (CIR) sequence based on the second correlation sequence. And, obtaining a third correlation sequence by removing random-data interference from the second correlation sequence based on the first CIR sequence and a feedback signal and generating a second CIR sequence based on the third correlation sequence.
    Type: Application
    Filed: May 4, 2007
    Publication date: February 28, 2008
    Inventor: Guanghui Liu
  • Publication number: 20080049601
    Abstract: Messages transmitted between a receiver and a transmitter are used to maximize a communication data rate. In particular, a multicarrier modulation system uses messages that are sent from the receiver to the transmitter to exchange one or more sets of optimized communication parameters. The transmitter then stores these communication parameters and when transmitting to that particular receiver, the transmitter utilizes the stored parameters in an effort to maximize the data rate to that receiver. Likewise, when the receiver receives packets from that particular transmitter, the receiver can utilize the stored communication parameters for reception.
    Type: Application
    Filed: October 31, 2007
    Publication date: February 28, 2008
    Applicant: AWARE, INC.
    Inventors: Marcos Tzannes, Dongjun Lee, Todor Cooklev, Colin Lanzl
  • Publication number: 20080049602
    Abstract: An Orthogonal Frequency Division Multiplexing (OFDM) communication system that multiplexes data with a plurality of orthogonal sub-carrier frequencies, which includes a transmitter for converting a serial data stream into parallel data, and segmenting the parallel data into a plurality of blocks having a plurality of data blocks; inserting reference data having information representing a phase value and a position into which the reference symbol is inserted, into each of the segmented blocks; Inverse Fast Fourier Transform (IFFT)-transforming the respective blocks into time-based signals where sub-carrier frequencies are separately assigned to the data blocks; and determining phase factors of the IFFT-transformed time-based signals to reduce a Peak-to-Average Power Ratio (PAPR) where non-linear distortion occurs due to coincidence of phases of the data blocks IFFT-transformed with the sub-carrier frequencies, and phase-rotating the IFFT-transformed signals according to the determined phase factors before tran
    Type: Application
    Filed: September 24, 2007
    Publication date: February 28, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-Ho Jung, Heung-Gyooun Ryu, Sung-Ryul Yun
  • Publication number: 20080049603
    Abstract: Systems and methods for multiframe alignment in a multipoint-to-point orthogonal frequency division multiplexing (OFDM system are provided. In one embodiment, an (OFDM) communication system comprises: a host unit; a plurality of remote units that access the host unit using an orthogonal frequency division multiple access scheme; wherein each of the remote units modulates upstream information into an OFDM signal modulated using a Fourier transform; wherein the host unit receives upstream OFDM signals from a plurality of the remote units, wherein portions of the upstream OFDM signals arrive at the host unit at the same time; and wherein the host unit causes at least one remote unit to align symbols with symbols transmitted from another remote unit based on a predefined multiframe pattern.
    Type: Application
    Filed: October 23, 2007
    Publication date: February 28, 2008
    Applicant: ADC TELECOMMUNICATIONS, INC.
    Inventors: Michael Geile, Jeffrey Brede
  • Publication number: 20080049604
    Abstract: Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprising: a receiver configured to de-modulate symbols from at least one of a plurality of spectrally overlapping carrier signals; a transmitter configured to modulate symbols onto at least one of a plurality of the spectrally overlapping carrier signals; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform to the data transmitted by the transmitter; and a controller programmed to instruct the transmitter to transmit a coarse timing adjustment followed by at least one secondary timing adjustment, wherein the secondary timing adjustment is a fine tuning adjustment with respect to the coarse timing adjustment.
    Type: Application
    Filed: October 29, 2007
    Publication date: February 28, 2008
    Applicant: ADC TELECOMMUNICATIONS, INC.
    Inventors: Mark Dapper, Michael Geile, Terrance Hill, Harold Roberts, Brian Anderson, Jeffrey Brede, Mark Wadman, Robert Kirscht, James Herrmann, Michael Fort, Steven Buska, Jeff Solum, Debra Enfield, Darrell Berg, Thomas Smigelski, Thomas Tucker, Joe Hall, John Logajan, Somvay Boualouang, Heng Lou, Mark Elpers, Matt Downs, Tammy Ferris, Adam Opoczynski, David Russell, Calvin Nelson, Niranjan Samant, Joseph Chiappetta, Scott Sarnikowski
  • Publication number: 20080049605
    Abstract: “The Out of Sight Light” is a mechanism, which can elevate itself through the use of air pressure, in the base unit being contained by the use of multiple O-rings and lower itself through the use of a spring expanding; which becomes compressed as the cylinder elevates out of the base unit. It has a lens, which can be easily changed for the use of colored filters; through the use of threaded connections. It is also protected due to the fact that when not in use, the extension cylinder which houses the light emitting element and filter; lowers back into its original position inside the base unit. It maintains vertical stability through the use of multiple O-rings, one of which also keeps debris from accumulating inside the base unit.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Inventor: John M. Balger
  • Publication number: 20080049606
    Abstract: A two-way communication device has a master transmitter (SysM1, TRM1, SysM2, TRM2) connected to at least one slave transmitter (SysS1, TRS1, SysS2, TRS2) by an active connection wire. The master transmitter and the slave transmitter have a common reference (GND). The master transmitter can transmit a master signal (S1) to the slave transmitter and the slave transmitter can transmit a slave signal (S2) to the master transmitter. The master signal (S1) is a digital modulation in voltage. The slave signal (S2) is a digital modulation in current.
    Type: Application
    Filed: July 1, 2005
    Publication date: February 28, 2008
    Applicant: AXALTO SA
    Inventors: Alain Rhelimi, Robert Leydier
  • Publication number: 20080049607
    Abstract: The present invention discloses a method for checking MA integrity, including: creating an MEP a; determining, by an MEP c in an MA, whether an MEP b with the same source port information as the MEP a exists in the MA; if there exists an MEP b with the same source port information as the MEP a in the MA, no isolated and unmated MEP exists in the MA; if an MEP b with the same source information as the MEP a does not exist in the MA, an isolated MEP exists in the MA. The present invention also discloses an apparatus for checking an MA integrity and a method and an apparatus for adding an MEP. The present invention enables a user to know whether an MA is integral and ensures MA integrity.
    Type: Application
    Filed: August 23, 2007
    Publication date: February 28, 2008
    Inventor: Ming XU
  • Publication number: 20080049608
    Abstract: In a process for securing communication connections and associated billing in a communication network with a redundant structure, terminals communicate via brokers preferably an IP bearer, by means of messages, the correct operation of the terminals and/or hardware units being monitored by a monitoring function and the physical functions of broken down hardware units being taken over when one or more hardware units break down. After the physical functions are taken over, the operative hardware units transmit a message to the terminals involved and, in addition, ensure that the monitoring function is carried out by the still operative hardware units.
    Type: Application
    Filed: October 12, 2005
    Publication date: February 28, 2008
    Inventor: Klaus Hoffmann
  • Publication number: 20080049609
    Abstract: For a survivable portion of a network, a backup port for a first router of the survivable network, to reach a destination node in the event of a single link failure, may be determined by (a) accepting a routing path graph having the destination node, wherein the routing path graph includes one or more links terminated by one or more primary ports of the first router, and (b) for each router of at least a part of the routing path graph, (1) assuming that a link terminated by a primary port of the current router is removed, defining (A) a first part of the routing path graph including the destination node, and (B) a second part of the routing path graph separated from the first part wherein the second part defines a sub-graph, and (2) determining the backup port for the first router by examining the sub-graph with respect to the first part of the routing path graph.
    Type: Application
    Filed: April 10, 2007
    Publication date: February 28, 2008
    Inventors: Hung-Hsiang Chao, Kang Xi
  • Publication number: 20080049610
    Abstract: A network unit for exchanging control messages with a remote network unit through a communication path to be established in a network. The network unit enables recovery of failures whether they occur in any of one way links, both-way links. The network unit also enables recovery of node failures to occur in a GMPLS network. The network decides whether or not it is possible to bypass all failure-occurred links detected in the communication path by switching the communication path to another by itself. When it is possible, the network unit detects the switching state of a downward segment that can bypass all those failure-occurred links. If the communication path is already switched or being switched in the downward segment, the network unit cancels the switching. If the communication path is not switched nor being switched in the downward segment, the network unit switches the communication path to a bypass route.
    Type: Application
    Filed: August 14, 2007
    Publication date: February 28, 2008
    Inventors: Pinai LINWONG, Kazuhiro Kusama
  • Publication number: 20080049611
    Abstract: In a data transmission method and apparatus which can perform a switchover of all of the main lines without requiring much construction cost, a transmission apparatus sets, upon frame transmission or reception, combinations of a plurality of main lines with virtual paths established so as to include at least a part of a bandwidth of the main lines in one or more protection lines as redundant configurations. Upon frame transmission, the apparatus copies frames received in the main lines, assigns identifiers of the redundant configurations to the copied frames, and transmits the copied frames to the virtual paths of the redundant configurations.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 28, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Atsuko HIGASHITANIGUCHI, Hiroshi KINOSHITA, Kunihiko HAMAMOTO
  • Publication number: 20080049612
    Abstract: Information is shared between switches such as bridges to facilitate efficient forwarding of data. In some embodiments consistency is maintained between information stored in filtering databases for IEEE 802.1D or 802.1Q bridges. When a switch does not have an entry in a filtering database that matches a destination address in a received frame, the switch may send information with the forwarded frame indicating that the switch had no entry for the destination address. When a switch that has an entry for a given destination address receives a frame along with an indication that the sender did not have an entry or has a different entry for the destination address, the switch may send its information corresponding to the destination address to other switches.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Inventors: Torkil Oelgaard, Joergen P.R. Hofman-Bang
  • Publication number: 20080049613
    Abstract: A method and system for providing a Quality of Service (QoS) change warning at a user equipment (UE) is disclosed. The method includes predicting (304) a change in radio access resources that will provide an associated new QoS that is significantly different than a current QoS being provided by the radio access resources. Further, the method includes presenting (306) a user alert at the UE. The alert is presented to the UE when it is determined that the associated new QoS would negatively impact a current service present on the user equipment in a significant manner.
    Type: Application
    Filed: August 24, 2006
    Publication date: February 28, 2008
    Applicant: MOTOROLA, INC.
    Inventor: Steven J. Nowlan
  • Publication number: 20080049614
    Abstract: A method of processing capacity information is disclosed, The capacity information relates to data capacity in a data network in which a consumer circuit is carried on, and consumes bandwidth made available by, a bearer circuit. The method comprises storing, in a network information database, an entity representing the bearer circuit, and associating capacity information with the bearer circuit entity specifying a first bandwidth quantity defining a quantity of bandwidth made available by the bearer circuit. Also stored is an entity representing the consumer circuit, and capacity information is associated with the consumer circuit entity specifying a second bandwidth quantity defining a quantity of bandwidth allocated to the consumer circuit.
    Type: Application
    Filed: May 24, 2007
    Publication date: February 28, 2008
    Inventors: Peter John Briscoe, Elizabeth Graves Tector
  • Publication number: 20080049615
    Abstract: A system for dynamically shaping data packet traffic on a packet network including at least one customer access node for communicating the data packets on the packet network; at least one customer premises equipment in communication with the at least one customer access node; at least one Internet gateway for communicating the data packets from an Internet, the at least one Internet gateway in communication with the at least one customer access node through the packet network; and at least one data packet rate shaper in communication with the at least one Internet gateway for shaping the rates of transmission of the data packets through the packet network based on network performance data transmitted by the at least one customer access node to the Internet gateway. A method for dynamically shaping data packet traffic on a packet network is also included.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventor: Michael K. Bugenhagen
  • Publication number: 20080049616
    Abstract: A method for an appliance to switch handling of transport layer connection requests from a first virtual server of the appliance managing a first plurality of services to a second virtual server of the appliance managing a second plurality of services upon exceeding, by the first virtual server, a maximum connection threshold determined dynamically from a status of the first plurality of services.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Applicant: Citrix Systems, Inc.
    Inventors: Sandeep Kamath, Josephine Suganthi, Sergey Verzunov, Anil Shetty
  • Publication number: 20080049617
    Abstract: A system for flow-control concurrency to prevent excessive packet loss, including at least one transmitter node. Each transmitter node is configured to transmit data. A first flow-control device is coupled to the at least one transmitter node. The first flow-control device is configured to limit the number of concurrent data replies sent by the at least one transmitter node such that the resources on the transmitter node side will not be overrun. At least one receive node is configured to receive data transmitted. The at least one receiver node is coupled to the at least one transmitter node via the communication network. A second flow-control device is coupled to the at least one receiver node. The second flow-control device is configured to limit the number of concurrent data requests received by the at least one receiver node such that the resources on the receiver node side will not be overrun.
    Type: Application
    Filed: August 23, 2006
    Publication date: February 28, 2008
    Applicant: International Business Machines Corporation
    Inventors: Donald G. Grice, Kalyan C. Gunda, Brian D. Herr, Gautam H. Shah
  • Publication number: 20080049618
    Abstract: The present invention relates to a data flow amount control device in a mobile communication system, which includes a plurality of mobile stations, a control station relaying packets to each of the plurality of mobile stations, and a base station temporarily storing the packets transmitted from the control station in a buffer and transmitting the packets to each of the plurality of mobile stations.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 28, 2008
    Applicant: NTT DoCoMo, Inc.
    Inventors: Hiroyuki ISHII, Tomoki Sao
  • Publication number: 20080049619
    Abstract: The invention generally relates to methods and apparatus for routing data in networks, in particular packet data routing in TCP/IP (Transmission Control Protocol/Internet Protocol). Application of the invention include routing of peer-to-peer (P2P) network data. A method of controlling traffic on a data network, said traffic comprising payload data and associated signaling data, the method comprising reading a portion of said payload data for a communications session between a first entity and a second entity communicating over said network; determining whether said portion of payload data identifies a type of traffic to be controlled; storing, responsive to said determining, signaling data associated with said portion of payload data; reading said signaling data to identify an attempt to begin a further communications session of said identified traffic type or to resume said communication session; and controlling traffic of said further or resumed communications session responsive to said identification.
    Type: Application
    Filed: January 24, 2005
    Publication date: February 28, 2008
    Inventor: Adam Twiss
  • Publication number: 20080049620
    Abstract: The invention relates to a transport protocol and associated methods and stack architectures for improving the energy efficiency of transmitting packets through an ad hoc network. The protocol controls transmissions by taking into account per-packet energy limits, per-node loss tolerances, and/or minimum availability rates determined based on path quality measurements collected by packets traversing the network and application reliability requirements associated with various applications.
    Type: Application
    Filed: August 24, 2007
    Publication date: February 28, 2008
    Applicant: BBN Technologies Corp.
    Inventors: Niky Riga, Abraham Matta, Alberto Medina, Craig Partridge, Jason Redi, Isidro Castineyra
  • Publication number: 20080049621
    Abstract: A communications scheme for configuring a network comprising a plurality of connected switching apparatus, each switching apparatus having functionality for implementing connectionless forwarding of received communications traffic to selectively provide a connection-oriented service for said received communications traffic, the scheme comprising: determining in a control plane index header field values to identify connectionless traffic received at switching apparatus for which a connection is to be established between a source node and a destination node; providing each switching apparatus necessary to implement the connection with information from the control plane, the information enabling the data forwarding tables of the switching to be populated with said index header field values in association with egress ports of the switching apparatus; and disabling all other functionality on said switching apparatus capable of populating the data forwarding tables with index information associated with said egress
    Type: Application
    Filed: December 30, 2005
    Publication date: February 28, 2008
    Inventors: Alan McGuire, Andrew Reid
  • Publication number: 20080049622
    Abstract: A technique protects against failure of a network element using Multi-Topology Repair Routing (MTRR) in a computer network. According to the novel technique, a protecting node (e.g., a router) maintains Multi-Topology Routing (MTR) databases for a first topology and at least a second topology. The protecting node determines whether any acceptable repair paths are available in the first topology for a protected network element (e.g., node, link, etc.) of the first topology. If not, the protecting node may establish a repair path (e.g., for Fast ReRoute, FRR) in the second topology for the protected network element.
    Type: Application
    Filed: August 28, 2006
    Publication date: February 28, 2008
    Inventors: Stefano B. Previdi, David D. Ward, Jean-Philippe Vasseur, Ian Michael Charles Shand, Stewart Bryant
  • Publication number: 20080049623
    Abstract: Methods and apparatus to provide service assurance for communication networks are disclosed. An example apparatus comprises a service provisioning server to initiate provisioning of a service to a user device, and a service testing server to perform a test of the service and to report a service test result to the service provisioning server, the service testing server responsive to a request from the user device to initiate the test of the service, the user device automatically generating the request in response to the service provisioning.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Inventors: Chaoxin Charles Qiu, Haifeng Bi, Robert Francis Dailey
  • Publication number: 20080049624
    Abstract: A system for adjusting the window size of a TCP packet on a packet network including a sending network element in communication with a receiving network element for transmitting and receiving data packets between the sending network element and the receiving network element on the packet network, wherein at least one of the sending network element and the receiving network element is configured to determine network performance information of the packet network; concatenate the network performance information into the data packets; and adjust the window size of the TCP packet based on the network performance information. A method for adjusting the window size of a TCP packet on a packet network is also included.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventors: Amar N. Ray, Michael K. Bugenhagen, Robert J. Morrill, Cadathur V. Chakravarthy
  • Publication number: 20080049625
    Abstract: A system and method for collecting network performance information from a packet network. The method may include requesting network performance information from network communications devices on a packet network, collecting the network performance information from the network communications devices, where the network performance information is indicative of communications of real-time content and non-real-time content, and storing the network performance information in a configuration distinguishing the network performance information indicative of communications of real-time content.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventors: Stephen K. Edwards, Robert J. Morrill, Michael K. Bugenhagen
  • Publication number: 20080049626
    Abstract: A system and method for communicating network performance information of a node segment of a packet network may include generating network performance information indicative of transmission characteristics of a node segment on a packet network. The network performance information may be included in a data packet and communicated using in-band signaling to a network communications device.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventors: Michael K. Bugenhagen, Robert J. Morrill, William L. Wiley
  • Publication number: 20080049627
    Abstract: A method and apparatus are provided for monitoring the physical topology of a network on a real-time basis. For patch panel systems, the approach is based upon a distributed architecture that may be modularly scalable and may allow each patch panel to determine port level connectivity by independently monitoring an out-of-band channel supported by each respective port. The approach provides improved real-time reporting of patch panel connectivity with reduced cabling complexity, increased reliability and decreased maintenance costs. The approach is capable of determining the physical equipment and/or physical location information associated with the respective patch panel ports, in real-time, and thereby provide physical network topology information associated with patch cord connections. The approach is compatible with multipurpose network management systems.
    Type: Application
    Filed: October 30, 2007
    Publication date: February 28, 2008
    Applicant: PANDUIT CORP.
    Inventor: Ronald Nordin
  • Publication number: 20080049628
    Abstract: A system and method for modifying connectivity fault management packets. Network performance information is extracted from a communications network using connectivity fault management packets. The connectivity fault management packets are received. The configuration of the connectivity fault management packets is modified to obtain additional network performance information from the communications network.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventor: Michael K. Bugenhagen
  • Publication number: 20080049629
    Abstract: A method for monitoring and optimizing interlayer network performance including generating network performance information data indicative of network transmission characteristics from a data link layer device; including the network performance information data in a data packet; communicating the network performance information data in the data packet from the data link layer device to a one of a physical layer device, the data link layer device, a network layer device, a transport layer device, a session layer device, a presentation layer device, and an application layer device; and in response to receiving the network performance information data, optimizing network performance by performing a function by at least one of the physical layer device, data link layer device, network layer device, transport layer device, session layer device, presentation layer device, and application layer device. A system for monitoring and optimizing interlayer network performance is also included.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventor: Robert J. Morrill
  • Publication number: 20080049630
    Abstract: A system for monitoring and optimizing network performance to a wireless device including a wireless router in communication with the wireless device for transmitting and receiving RF signals between the wireless router and the wireless device, the wireless router configured to determine network performance information of the wireless network; concatenate the network performance information into data packets; a packet network switch in communication with the wireless router for communicating the data packets between the wireless router and the packet network switch; and a network management device in communication with the packet network switch for instructing the packet network switch to route the data packets to the wireless router based on the network performance information to optimize the network performance to the wireless device. A method for monitoring and optimizing network performance to a wireless device is also included.
    Type: Application
    Filed: June 1, 2007
    Publication date: February 28, 2008
    Inventors: Steven E. Kozisek, Carl M. Coppage, Robert J. Morrill
  • Publication number: 20080049631
    Abstract: A method for monitoring and optimizing interlayer network performance including generating network performance information data indicative of network transmission characteristics from one of a data link layer device, physical layer device, network layer device, transport layer device, session layer device, presentation layer device, and application layer device; including the network performance information data in a data packet; communicating the network performance information data in the data packet from one of the data link layer device, physical layer device, network layer device, transport layer device, session layer device, presentation layer device, and application layer device to a data link layer device; and in response to receiving the network performance information data, optimizing network performance by performing a function by the data link layer device. A system for monitoring and optimizing interlayer network performance is also included.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventor: Robert J. Morrill
  • Publication number: 20080049632
    Abstract: A system for adjusting the window size of a TCP packet on a packet network including a receiving transport layer device configured to determine network performance information of the packet network; concatenate the network performance information into the data packets; adjust the window size of the TCP packet based on the network performance information; a non-transport layer device in communication with the receiving transport layer device for receiving the data packets; and a transport layer device in communication with the non-transport layer device, wherein the non-transport layer device forwards the data packets on to the transport layer device. A method for adjusting the window size of a TCP packet on a packet network is also included.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventors: Amar N. Ray, Michael K. Bugenhagen, Robert J. Morrill, Cadathur V. Chakravarthy
  • Publication number: 20080049633
    Abstract: A method and system for measuring latency is provided. A monitor node is used to measure latency in a computer network or in a computing device by time stamping signal messages sent from nodes in the computer network and/or tasks in a particular node or device. The time stamps are generated using a system clock of the monitor node to reduce any discrepancies in timing. In addition, the monitor node may compensate for latencies between the monitor node and each of the one or more nodes or devices across which latency is to be measured. Signal messages may include a data message ID and/or a node ID identifying the message that is being tracked and for which latency is being measured. Latency may further be measured across multiple tasks being performed in the same or different nodes or devices by transmitting signal messages for each of the multiple tasks.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Applicant: REUTERS AMERICA INC.
    Inventors: Timothy P. Edwards, Rajasekhar R. Gunturu, Brian D. Sandri, John Patrick Merrick
  • Publication number: 20080049634
    Abstract: A method and apparatus to analyze real-time data transmissions across a network is described. The method may comprise transmitting a sample data stream between source and destination endpoints across a test data path which includes network devices. The method may then compare a measured quality of the received sample data stream with pre-defined quality criteria associated with the network. If the measured quality fails to meet the pre-defined quality criteria, the network devices in the test data path may be identified, device performance data may be obtained, and a network report may be generated based on the device performance data. The device performance data may comprise processor utilization, memory utilization, bandwidth over subscription, buffer over run, and/or a number of non-error packets that are discarded at the network device.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Inventors: Dinesh Goyal, Sachin Purushottam Saswade
  • Publication number: 20080049635
    Abstract: A method of measuring a one-way packet travel time from a first communication system to a second communication system comprises receiving a Real-time Transport Control Protocol (RTCP) packet outputted by the second communication system. A Network Time Protocol (NTP) timestamp value is extracted from the RTCP packet, and a time value, T, is determined based on the NTP timestamp value. A Last Sender Report (LSR) value and a Delay since LSR (DLSR) value are extracted from the RTCP packet. A value L=T?LSR?DLSR is determined to measure the one-way packet travel time from the first communication system to the second communication system.
    Type: Application
    Filed: August 25, 2006
    Publication date: February 28, 2008
    Applicant: SBC Knowledge Ventures, LP
    Inventors: Alexander Huang, Wallace Smith, James James
  • Publication number: 20080049636
    Abstract: A SIR estimation method for a communication apparatus that performs communication by a single-carrier frequency division multiple access (SC-FDMA) transmission method, wherein estimated channel values for each sub carrier within a signal bandwidth and weight coefficients used in frequency equalization are used to estimate an SIR, which is a ratio of the signal and interference, of a specified transmitting antenna.
    Type: Application
    Filed: May 3, 2007
    Publication date: February 28, 2008
    Inventor: Dai Kimura
  • Publication number: 20080049637
    Abstract: A system and method for determining a call path to assign a call over a packet network. A call request may be received, and at least two potential call paths over a packet network over which a call associated with the call request may be placed may be determined. Network performance information associated with each node segment on the respective at least two potential call paths may be accessed. A value associated with each potential call path may be determined, where each value may be indicative of communications operations on each potential call path. A call path may be assigned to the call based on the determined values.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventors: Robert J. Morrill, Carl M. Coppage, Amar N. Ray, William L. Wiley
  • Publication number: 20080049638
    Abstract: A method for monitoring and optimizing performance of a packet network utilizing user datagram protocol including determining network performance information between a sending user datagram protocol network element and a receiving user datagram protocol network element; concatenating the network performance information into data packets; transmitting the data packets to at least one non-user datagram protocol network device having transport layer capabilities; and controlling bandwidth of the at least one non-user datagram protocol network device to optimize the network utilizing the user datagram protocol based on the network performance information in the data packets. A system for monitoring and optimizing performance of a packet network utilizing user datagram protocol is also included.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventors: Amar N. Ray, Cadathur V. Chakravarthy
  • Publication number: 20080049639
    Abstract: A system and method for managing communications services of users of a packet network Parameters associated with service agreements of users of a packet network may be stored. Network performance information associated with the users may also be stored. The network performance information may be accessed to read a quality of service parameter of communications over the packet network for a user over a given time period. The parameters associated with a service agreement may also be accessed. A quality of service parameter for the user to receive during the time period as contracted by the user may be read. A determination as to whether the user has received a quality of service for communicating over the packet network below the contracted quality of service may be made and the user, in response to determining that the quality of service is below the contracted quality of service, may be compensated.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventors: William L. Wiley, Michael K. Bugenhagen
  • Publication number: 20080049640
    Abstract: A system and method for provisioning resources of a packet network, including monitoring at least one network performance information parameter associated with communications of data packets. The at least one network performance information parameter(s) may be compared with at least one respective threshold value indicative of degradation of communications of the data packets. A determination may be made that the network performance information parameter(s) crosses the respective threshold value(s). In response to determining that the network performance information parameter(s) crosses the respective threshold value(s), a network resource may be provisioned to compensate for the degradation of communications of the data packets.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventors: John M. Heinz, James L. McNaughton
  • Publication number: 20080049641
    Abstract: A system and method for monitoring performance of a packet network may include storing network performance information collected from a packet network, where the network performance information may distinguish network performance information associated with communications of data packets including real-time content and data packets including non-real-time content. A graphic user interface including a graphical representation of the network performance information distinguishing the network performance information associated with communications of data packets including real-time content and network performance information including non-real-time content with a node segment over a time duration may be generated.
    Type: Application
    Filed: May 31, 2007
    Publication date: February 28, 2008
    Inventors: Stephen K. Edwards, Michael K. Bugenhagen