Patents Examined by Wellington Chin
  • Patent number: 6895021
    Abstract: A method and apparatus for frame-level, sub-second error reporting is disclosed. Trouble profiles are compiled using synchronous constant-frame error detection and, during a transmission hiatus, pseudo-synchronous constant-frame error detection so as to describe transmission integrity down to the millisecond. This provides profiles that can be used to trace the cause(s) of outages to complex networks including outages from network activity. The outage profiles obtained from the described device can be used to determine and confirm the source of sub-second, or more, transmission outages.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: May 17, 2005
    Assignee: AT&T Corp.
    Inventor: Mark Vedder
  • Patent number: 6895000
    Abstract: The invention discloses an Internet phone transmitting signals through a USB interface, which comprises a thin client and a digital phone. The USB interface connects the thin client and the digital phone. The phone communication is achieved through the online function of the thin client. The voice message sending procedure transmits outgoing message signals to the thin client through the USB interface. The thin client converts the outgoing message signals into an outgoing message VOIP package. The outgoing message VOIP package is then transmitted through a network to a target. The voice message receiving procedure transmits an incoming message VOIP package from the target back to the thin client through the network and converts the incoming message VOIP package into incoming message signals. Further through the USB interface, the incoming message signals are transmitted to the digital phone.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: May 17, 2005
    Assignee: Inventec Appliances Corp.
    Inventors: Cheng-Shing Lai, Jing-Song Wu
  • Patent number: 6895014
    Abstract: A method for polling a plurality of wireless modems from a base station in which the base station individually polls all of the modems and forms at least two lists such that each modem is identified on only one discrete list based upon its behavior in response to the polling. Thereafter, the modems identified on each discrete list are polled at a rate that may differ from the rate at which the modems identified on any other list are polled and the lists are updated dynamically based upon the behavior of the modems polled in response to the last polling.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: May 17, 2005
    Assignee: Wave Rider Communications Inc.
    Inventors: Walter Simbirski, Dusty Keashly, Joseph Robert Brasic, Daniel Cameron Taylor, Braden Stuart Marr, Lisa Anne Ryan
  • Patent number: 6891813
    Abstract: A communications system and method of operating the communications system includes a high altitude communication device that communicates with a plurality of user terminals and a gateway station. The gateway station couples the users to terrestrial networks and other users. The high altitude communication device has a controller that assigns a first code to a beam of a first plurality of users. When one of the first plurality of users moves to interfere with one of the other of the first plurality of users, the beam associated with the user is reassigned another code.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: May 10, 2005
    Assignee: The DirecTV Group, Inc.
    Inventors: Ying Feria, Ming Chang, Donald Chang
  • Patent number: 6891802
    Abstract: A method for network site testing and associated distributed parallel processing system are disclosed that identifies the capabilities of distributed devices connected together through a wide variety of communication systems and networks and utilizes those capabilities to provide incentives to the distributed devices and to organize, manage and distribute project workloads to the distributed devices.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: May 10, 2005
    Assignee: United Devices, Inc.
    Inventor: Edward A. Hubbard
  • Patent number: 6891803
    Abstract: A test set includes at least one signal input port, a test circuitry, a processor, a user-input device, and a display. The test circuitry couples to and receives signals from the at least one signal input port. The test circuitry then generates test data corresponding to the received signals. The processor couples to and receives test data from the test circuitry and generates test results. The processor also couples to and receives commands from the user-input device. The processor further operatively couples to the graphical display that receives and displays the test results from the processor. In one embodiment, the test set is capable of performing line qualification and connectivity testing. A modem module can be used to facilitate connectivity testing. The modem module can be a plug-in module with a common interface to the test set. The modem module can also contain a fingerprint value that identifies the module type and the software revision number to the test set.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: May 10, 2005
    Assignee: Sunrise Telecom, Inc.
    Inventors: Paul Chang, Tom Dang, Chi Lin Wu
  • Patent number: 6888839
    Abstract: Method and apparatus for tunneling operating codes to and from a call server in a packet network. A signaling package for the Megaco/H.248 protocol is provided which encapsulates or “tunnels” control and signaling codes for an endpoint device so that the codes can be communicated between a call server and the device. Only the call server and the endpoint device need have the intelligence to interpret the operating codes. Where the device is a programmable phone, the call server can be provisioned to understand and control specialized functions of the phone without adding new, telephone specific signaling to the standard Megaco/H.248 protocol for each type of phone to be supported. The media gateway that serves the specific telephone in question simply passes on any operating codes received.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: May 3, 2005
    Assignee: Nortel Networks Limited
    Inventors: Shwu-Yan Chang Scoggins, John Schroder, Janelle T. Tucker
  • Patent number: 6888826
    Abstract: A SONET multiplexed communications system that facilitates the sharing of processing resources while reducing overall system complexity. The SONET multiplexed communications system includes a single multi-output pointer generator clocked by a system clock and a plurality of clock domain transfer circuits having respective FIFO buffers for transferring SONET signals from the system clock domain to respective outgoing line clock domains. The multi-output pointer generator and the clock domain transfer circuits compensate for timing differences between the system clock and the respective outgoing line clocks by either skipping or overwriting FIFO buffer address locations corresponding to TOH byte positions in outgoing SONET frames. The TOH bytes corresponding to the skipped or overwritten TOH byte positions are subsequently re-generated by respective TOH insertion circuits before the outgoing SONET frames are passed through outgoing SONET lines.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: May 3, 2005
    Assignee: Applied Micro Circuits Corporation
    Inventors: Gary D. Martin, William J. Anker
  • Patent number: 6888834
    Abstract: An embodiment of the present invention comprises a wireless communication network topology having a wireless head end coupled to multiple Internet Service Providers, which are in turn coupled to the Internet. In addition, the topology features a radio transceiver in a tower coupled to the wireless head end via an Ethernet switch for sending and receiving data to and from customer premise equipment, which in turn is coupled to a host computer or a network of host computers. The wireless head end may perform traffic control and forwarding operations for data received from the Network Service Providers and the host computer(s). The wireless head end may also perform security measures to ensure that only messages from valid host computers are forwarded to the Network Service Providers. The customer premise equipment can assign a private IP address range to the computer(s) and perform network address translation.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: May 3, 2005
    Assignee: Keyon Communications LLC
    Inventors: Scott M. Wood, Daniel L. Roady
  • Patent number: 6888847
    Abstract: To provide a communication apparatus that can relieve the processing load when packet transfer is made with hardware. A packet transfer apparatus includes an input buffer for storing temporarily an input packet, an address acquiring section for acquiring the information needed for the transfer, a retrieval circuit for retrieving the information regarding the output with the acquired destination address as a key, a label insertion circuit for encapsulating a packet with the labels in the maximum number of stack layers M designated for a packet group having a unit of destination address, and a switch section for switching the encapsulated packet to a desired output destination port.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: May 3, 2005
    Assignee: NEC Corporation
    Inventor: Hiroshi Ueno
  • Patent number: 6888821
    Abstract: An network interface architecture is provided with solutions for dynamic media authorization and better management of QoS classes of a session (connection between users or mobile terminals) comprising a plurality of media streams within mobile networks such that, when media stream(s) are modified (new ones started and existing ones deleted) during the session, the traffic class of a session is defined by the highest traffic class requirement by the media flows belonging to the same session in order to eliminate the difference of transmission delays of media streams belonging to the same session and, therefore, improving the quality of the connection perceived by the end user.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: May 3, 2005
    Assignee: Nokia Corporation
    Inventors: Juha A. Räsänen, Igor Curcio
  • Patent number: 6885646
    Abstract: A method and system for assigning resources in wireless communication systems is disclosed. Timeslots allocated for handling user traffic are evaluated to create a plurality of timeslot sequences. Resources are assigned to the allocated timeslots according to the timeslot sequence having the lowest total interference.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: April 26, 2005
    Assignee: InterDigital Technology Corporation
    Inventor: Guodong Zhang
  • Patent number: 6885632
    Abstract: Signal degrade (SD) propagation is provided for transparent mux/demux (T-Mux) systems to enable timely and more accurate performance monitoring and protection capabilities. A transparent node comprising two T-Muxs connected via a high-rate span between first and second sites common to a plurality of trib telecommunication systems provides continuity to all tribs and maintains the lower bit rate systems through the span. SD indicia, such as bit errors, on respective incoming trib signals at a T-Mux are accumulated over a relatively short fixed period. The SD information is encoded in a message byte and transported, alternately with a synchronization message, to the companion T-Mux in otherwise available signaling overhead. Upon receipt of the T-Mux message, for each trib signal, the downstream T-Mux generates a corresponding signal degrade condition on outgoing trib signals.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: April 26, 2005
    Assignee: Nortel Networks Limited
    Inventor: James R. Mattson
  • Patent number: 6885668
    Abstract: Disclosed is an apparatus and a method capable of processing low-speed circuit data lower than 64 kbps and high-speed packet data higher than 64 kbps in which a high-speed data network is constructed by converting an LCIN (local CDMA (code division multiple access) interconnection network) for supplying a communication path of packet data among sub-systems in a BSC (base station controller) of CDMA system to an ATM (asynchronous transfer mode) for processing high-speed data, installing a TSB (transcoder selector bank) or an SDU (selector distribution unit) for processing high-speed packet data higher than 64 kbps in the BSC, and linking an ATM switch to an MSC (mobile switching center) to provide a high-speed data service with respect to other network.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: April 26, 2005
    Assignee: UTStarcom, Inc.
    Inventors: Ho-Jin Lee, Chae-Moon Lee, Duck-Young Seo, Jin-Hyung Yang
  • Patent number: 6885645
    Abstract: A method (500) and a mobile station (160) for controlling bearer assignment are described herein. In a wireless communication system (100), a core network (210) is configured to provide communication services to the mobile station (160). The mobile station (160) may detect a resource conflict associated with a communication service within the mobile station (160). Upon detecting the resource conflict, the mobile station (160) may determine a condition of the resource conflict suggesting to delay a bearer assignment for the communication service. Based on the condition of the resource conflict, the mobile station (160) may transmit a request associated with the bearer assignment to the core network (210).
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: April 26, 2005
    Assignee: Motorola, Inc.
    Inventors: Bill Ryan, Lawrence Willis
  • Patent number: 6885649
    Abstract: A method of using a user equipment (UE) in a wireless time division duplex communication system. Each communication burst has a unique channelization code and a midamble code which is uniquely related to the channelization code, each such midamble code being uniquely related to one or more channelization code. The UE receives communication bursts and detects each midamble code in a received communication burst. The UE determines the channelization codes related to each detected midamble based on a mapping of midamble codes to related channelization codes. The UE detects channelization codes in the received communication burst from among the determined channelization codes.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: April 26, 2005
    Assignee: InterDigital Technology Corporation
    Inventors: Ariela Zeira, Eldad Zeira, Alexander Reznik, Stephen E. Terry
  • Patent number: 6885656
    Abstract: In a network that roughly comprises a temporary master station and a plurality of slave stations and is an adhoc network, which can be immediately constructed in situ, and is a temporary master station interposition-type network in which a temporary master station is present, the temporary master station receives and judges an interference detection packet sent from the slave station. By virtue of this construction, an asynchronous interference avoiding method and an asynchronous interference avoiding system can be realized which can reliably avoid interference.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: April 26, 2005
    Assignee: NEC Corporation
    Inventor: Toshiyuki Sashihara
  • Patent number: 6885664
    Abstract: This invention describes a method for transmitting and forwarding packets over a switching network using time information. The network switches maintain a common time reference, which is obtained either from an external source (such as GPS—Global Positioning System) or is generated and distributed internally. The time intervals are arranged in simple periodicity and complex periodicity (like seconds and minutes of a clock). A data packet that arrives to an input port is switched to an output port based on its order or time position in the time interval in which it arrives at the switch. The time interval duration can be longer than the time duration required for transmitting a data packet, in which case the exact position of a data packet in its forwarding time interval is predetermined. This invention provides congestion-free data packet switching for data packets for which capacity in their corresponding forwarding links and time intervals is reserved in advance.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: April 26, 2005
    Assignee: Synchrodyne Networks, Inc.
    Inventors: Yoram Ofek, Nachum Shacham
  • Patent number: 6885634
    Abstract: A network utilizing a link-state protocol includes a plurality of nodes with associated trunks that recover in a staggered manner. A first trunk associated with a first node is selected for recovery. After the first trunk is recovered, further trunks are selected such that N or less trunks recover at the same time until all trunks associated with the first node are selected for recovery. Node recovery is staggered at selected intervals to minimize or eliminate overload conditions. Staggered recovery in accordance with the present invention can reduce the likelihood of trunk loss due to excessive HELLO messages in an OSPF system and retransmission and retransmission lockout.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: April 26, 2005
    Assignee: AT&T Corp.
    Inventors: Gagan Lal Choudhury, Anurag S. Maunder
  • Patent number: 6882656
    Abstract: A speculative transmit function, utilizing a configurable logical buffer, is implemented in a network. When a transmission is started the logical buffer is configured as a FIFO to reduce transmit latency. If a data under-run lasts for more than a fixed time interval the transmission is abandoned and the logical buffer is reconfigured as a STORE-AND-FORWARD buffer. The transmission is restarted after all transmit data is buffered.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: April 19, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William P. Bunton, David A. Brown, John C. Krause