Patents by Inventor Thawatt Gopal

Thawatt Gopal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20120257494
    Abstract: In mobile user equipment (UE) configured to allow for operation on multiple wireless communication networks, such as on a TD-SCDMA network or on a TDD-LTE network, an improved method for handing over a circuit-switched call is offered. The proposed circuit-switched fallback procedure, employing an improved UE hardware architecture, allows for certain connection setup procedures to occur in parallel, such as the UE pre-acquiring the TD-SCDMA cell. The parallel operations thus speed up the circuit-switched fallback procedure and reduce existing delays in executing circuit-switched fallback from TDD-LTE to TD-SCDMA networks.
    Type: Application
    Filed: September 1, 2011
    Publication date: October 11, 2012
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee, Thawatt Gopal
  • Patent number: 8189626
    Abstract: In a method for multicast and broadcast synchronization a data payload frame is generated from a data payload. A frame number is assigned to the data payload frame, wherein the frame number includes a generating time of the data payload frame. The data payload frame is distributed to a plurality of base stations in a wireless access system. The offset spans a travel time of a data payload frame from the controller to the plurality of base stations as well as a scheduling time and a multiplexing time.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: May 29, 2012
    Assignee: Future Wei Technologies, Inc.
    Inventors: Thawatt Gopal, Jun Hu
  • Patent number: 7953035
    Abstract: A method comprising modifying a plurality of access channel (AC) probe parameters using a plurality of intra-user service classes, and accessing an AC using the modified AC probe parameters. The disclosure includes a communications component comprising a processor configured to implement a method comprising recognizing a registration request from an access terminal (AT), wherein the registration request causes a quality of service (QoS) profile comprising an inter-user QoS class for the AT to be requested, retrieving at least one intra-user access service parameter based on the inter-user class, and sending the intra-user access service parameter to the AT. The disclosure also includes a mobile access network comprising an access node (AN) in communication with a plurality of ATs, wherein the AN differentiates service for the ATs based on inter-user service classes and intra-user service class types.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: May 31, 2011
    Assignee: FutureWei Technologies, Inc.
    Inventor: Thawatt Gopal
  • Patent number: 7940655
    Abstract: A cross-layer optimization is presented between the MAC and Network layers to enhance the performance of VoIP services in advanced wireless networks. Among the factors considered in the optimization are the characteristics of the originating source and the network path. This information is relayed using the Network layer to provide feedback to the MAC layer in order to improve the end-to-end performance of VoIP services.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: May 10, 2011
    Assignee: FutureWei Technologies, Inc.
    Inventor: Thawatt Gopal
  • Publication number: 20110070897
    Abstract: A system and method for deriving cell global identity information are provided. A method for deriving cell global information includes receiving, at a first cell, a measurement report, determining a second identifier for the second cell based on a first identifier and information about the first cell, and adding the second cell to a cell list. The measurement report includes the first identifier of a second cell, and the second identifier is used to reference the second cell.
    Type: Application
    Filed: September 22, 2010
    Publication date: March 24, 2011
    Applicant: FutureWei Technologies, Inc.
    Inventors: Binsong Tang, Thawatt Gopal, Hongyuan Wang, Hailong Wang
  • Publication number: 20110070883
    Abstract: A system and method for automatic carrier change detection in a wireless communications system are provided. A method for centralized carrier change detection includes detecting a carrier change in a carrier deployment of a cell, determining at least one inter-frequency neighbor cells of the cell, and updating the at least one inter-frequency neighbor cells regarding the carrier change.
    Type: Application
    Filed: September 18, 2010
    Publication date: March 24, 2011
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Hailong Wang, Thawatt Gopal, Binsong Tang
  • Publication number: 20090180549
    Abstract: A method of broadcasting data is disclosed. A plurality of broadcast data streams are received and divided into a plurality of frames. Each frame includes data from only one of the broadcast data streams. The frames can then be broadcast wirelessly.
    Type: Application
    Filed: January 14, 2009
    Publication date: July 16, 2009
    Applicant: FutureWei Technologies, Inc.
    Inventors: Patrick Hosein, Thawatt Gopal
  • Publication number: 20090109893
    Abstract: A cross-layer optimization is presented between the MAC and Network layers to enhance the performance of VoIP services in advanced wireless networks. Among the factors considered in the optimization are the characteristics of the originating source and the network path. This information is relayed using the Network layer to provide feedback to the MAC layer in order to improve the end-to-end performance of VoIP services.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Inventor: Thawatt Gopal
  • Patent number: 7522919
    Abstract: Noise is measured at one or more base stations in a mobile communication system during periodic silence periods. A periodic silence period is defined for at least one carrier that is independent of reverse link channel frame boundaries. The radio base stations transmits silence parameters defining the periodic silence period to mobile stations, which stop transmitting during the periodic silence periods. A time reference is provided to the mobile stations to synchronize the silence periods for all mobile stations.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: April 21, 2009
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Young C. Yoon, Wanshi Chen, Hsien Woo, Anthony C. K. Soong, Srinivasan Balasubramanian, Thawatt Gopal, Long Duan, Shiau-He Shawn Tsai
  • Patent number: 7519019
    Abstract: A radio base station performs reverse link rate control in a wireless communication network by “stealing” bits on a forward common power control channel. The forward common power control channel is divided into a plurality of frames, with each frame including a plurality of power control groups and each power control group including a plurality of power control slots. The radio base station may dynamically select power control slots depending on user demand to be used for reverse link rate control.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: April 14, 2009
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Young C. Yoon, Srinivasan Balasubramanian, David Reeves Comstock, Long L. Duan, Ralph Gholmieh, Thawatt Gopal, Patrick A. Hosein, Anthony C. K. Soong, Shiau-He Shawn Tsai, Rath Vannithamby, Jonas Wiorek
  • Publication number: 20090080406
    Abstract: In a method for multicast and broadcast synchronization a data payload frame is generated from a data payload. A frame number is assigned to the data payload frame, wherein the frame number includes a generating time of the data payload frame. The data payload frame is distributed to a plurality of base stations in a wireless access system. The offset spans a travel time of a data payload frame from the controller to the plurality of base stations as well as a scheduling time and a multiplexing time.
    Type: Application
    Filed: September 15, 2008
    Publication date: March 26, 2009
    Inventors: Thawatt Gopal, Jun Hu
  • Patent number: 7469146
    Abstract: A wireless communication network receives packet data transmissions from a mobile station, tracks the occurrence of retransmission requests sent to the mobile station responsive thereto, and modifies the radio link assignments for the mobile station based at least in part on said tracking. For example, a base station controller may be configured to manage the active set of a mobile station based on the number and/or frequency of NACK messages sent by the radio base stations in the mobile station's active set(s) responsive to packet data transmissions from the mobile station. The ACK/NACK response of a radio base station to mobile station transmissions may be used to detect link imbalance, identify poor reverse link channels, etc. The base station controller can add or change radio links based on the ACK/NACK response to improve reverse link performance, trigger voice call handoff, correct link imbalance, etc.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: December 23, 2008
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anthony C. K. Soong, Tao Wu, Thawatt Gopal, Young C. Yoon, Shiau-He Shawn Tsai
  • Patent number: 7406077
    Abstract: An apparatus and method provide MAC logic enabling the use of two or more reverse link rate controls at the same time in one or more sectors of a radio base station. That enables the base station to control reverse link loading via reverse link rate control, while assigning mobile stations to the type of reverse link rate control best suited to their needs. For example, the base station MAC logic may implement both a common rate controller that generates per-sector rate control commands, and a dedicated rate controller that generates per-user rate control commands and assign mobile stations having relatively lax reverse link service needs to the common rate controller, while assigning mobile stations having more demanding reverse link service requirements to the dedicated rate control. More than two rate controls can be implemented, and exemplary choices include per-user, per-sector, per-group, and scheduled rate control in any combination.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: July 29, 2008
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Srinivasan Balasubramanian, David Reeves Comstock, Long L. Duan, Ralph Gholmieh, Thawatt Gopal, Patrick Ahamad Hosein, Seong-Jun Oh, Anthony C. K. Soong, Shiau-He Shawn Tsai, Rath Vannithamby, Jonas Wiorek, Hsein Woo, Tao Wu, Young C. Yoon
  • Patent number: 7379440
    Abstract: Call setup latency for a packet data call dormant reactivation is reduced by bypassing service negotiation and/or RLP Sync exchange procedures using values stored at the BSC. Previously negotiated parameters may be used to bypass service negotiation. A non-zero RTT value, calculated by a previously performed RLP Sync exchange, is stored at the BSC, and transmitted to the MS upon dormant reactivation. The MS uses the RTT to calculate a RLP REXMIT_TIMER value, bypassing a RLP Sync exchange with the BSC. The service configuration parameters and non-zero RTT may be stored at the BSC in the RLP BLOB of a SCR, which may be transmitted to the MS in an SCM. The SCR may store multiple records, each containing negotiated service configuration parameters and/or a non-zero RTT associated with a service instance, selected by a SRID transmitted by the MS.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: May 27, 2008
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Thawatt Gopal
  • Publication number: 20080075003
    Abstract: A method for controlling communications traffic on an inter-access-network link includes receiving a request for transmission of a traffic flow and determining a priority queue associated with the traffic flow. If the priority queue corresponds to the one of a first plurality of priority levels, the method further includes determining whether one or more predetermined criteria for the traffic flow are satisfied. If yes, the method additionally admitting the traffic flow, storing information associated with the traffic flow in the queue, and transmitting information associated with the traffic flow from the queue based on at least a strict priority process. If the queue corresponds to the one of a second plurality of priority levels, the method further admitting the traffic flow, storing information associated with the traffic flow in the queue, and transmitting information associated with the traffic flow from the queue based on at least an arbitrated priority process.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 27, 2008
    Applicant: FutureWei Technologies, Inc.
    Inventors: Kuo-Chun Lee, Mazin Al-Shalash, Shuqing Xing, Jun Hu, Qing Lin, Ted Olawuyi, Hsien Woo, Thawatt Gopal
  • Publication number: 20080037463
    Abstract: A method comprising modifying a plurality of access channel (AC) probe parameters using a plurality of intra-user service classes, and accessing an AC using the modified AC probe parameters. The disclosure includes a communications component comprising a processor configured to implement a method comprising recognizing a registration request from an access terminal (AT), wherein the registration request causes a quality of service (QoS) profile comprising an inter-user QoS class for the AT to be requested, retrieving at least one intra-user access service parameter based on the inter-user class, and sending the intra-user access service parameter to the AT. The disclosure also includes a mobile access network comprising an access node (AN) in communication with a plurality of ATs, wherein the AN differentiates service for the ATs based on inter-user service classes and intra-user service class types.
    Type: Application
    Filed: July 2, 2007
    Publication date: February 14, 2008
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventor: Thawatt Gopal
  • Publication number: 20070153719
    Abstract: Broadcast control messages are repetitively transmitted to said mobile stations over successive control channel cycles to meet minimum recommended periodicity requirements. To increase paging capacity, the frequency of one or more of the broadcast control messages may be varied to avoid unfavorable pairings of the broadcast control messages within a single control channel cycle.
    Type: Application
    Filed: December 29, 2005
    Publication date: July 5, 2007
    Inventor: Thawatt Gopal
  • Publication number: 20070086371
    Abstract: Multi-user packet detection at multiple mobile stations in a sector may be collectively disabled via a downlink point-to-multipoint command message from a base station. The point-to-multipoint command message may be transmitted on a packet data control channel, typically code division multiplexed, and may be a portion of a QUICKCONFIG message and/or transmitted using less than all of the carrier frequencies used by the base station to transmit downlink packet data. Multi-user packet detection may be subsequently allowed by transmitting a second point-to-multipoint message. The multi-user detection process may comprise checking a portion of a packet against a predetermined list of possible values that indicate the presence of a multi-user packet.
    Type: Application
    Filed: October 17, 2005
    Publication date: April 19, 2007
    Inventors: Mahesh Makhijani, Thawatt Gopal
  • Publication number: 20060084432
    Abstract: Two or more different sets of access parameters are stored in mobile station memory. When the mobile station sends an access message on the reverse access channel, it selects a set of access parameters based on the type of service. For high priority services, the mobile station selects a set of access parameters that reduces call setup latency. The network can change a selected set of access parameters by sending an access parameter message containing the updated parameter values. The access parameter message includes a priority field indicating the selected set of access parameters to be updated.
    Type: Application
    Filed: October 17, 2005
    Publication date: April 20, 2006
    Inventors: Srinivasan Balasubramanian, Thawatt Gopal
  • Publication number: 20050254462
    Abstract: Call setup latency for a packet data call dormant reactivation is reduced by bypassing service negotiation and/or RLP Sync exchange procedures using values stored at the BSC. Previously negotiated parameters may be used to bypass service negotiation. A non-zero RTT value, calculated by a previously performed RLP Sync exchange, is stored at the BSC, and transmitted to the MS upon dormant reactivation. The MS uses the RTT to calculate a RLP REXMIT_TIMER value, bypassing a RLP Sync exchange with the BSC. The service configuration parameters and non-zero RTT may be stored at the BSC in the RLP BLOB of a SCR, which may be transmitted to the MS in an SCM. The SCR may store multiple records, each containing negotiated service configuration parameters and/or a non-zero RTT associated with a service instance, selected by a SRID transmitted by the MS.
    Type: Application
    Filed: May 12, 2004
    Publication date: November 17, 2005
    Inventor: Thawatt Gopal