Patents by Inventor Liangchi Alan Hsu

Liangchi Alan Hsu 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).

  • Patent number: 9408209
    Abstract: Apparatus and method for wireless communication in a wireless communication network includes determining availability of a primary uplink frequency of a primary carrier and a secondary uplink frequency of a secondary carrier for uplink transmissions and determining a primary radio condition of the primary uplink frequency meets a superior condition threshold and a second radio condition of the secondary uplink frequency meets an inferior condition threshold. Aspects of the method and apparatus also include transmitting, based on determining the primary radio condition meets the superior condition threshold and the second radio condition meets the inferior condition threshold, all pending control packet data units and all pending retransmission packet data units on the primary uplink frequency. Additionally, the UE duplicates a transmission of all data from the secondary uplink frequency on the primary uplink frequency.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: August 2, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sitaramanjaneyulu Kanamarlapudi, Liangchi Alan Hsu
  • Patent number: 8929316
    Abstract: A process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for the packet data transmissions on the forward channel. A process for controlling selection of MCS method to be used by a BTS to transmit data packets over a forward shared channel to a MS stores information at the BTS, the information containing MCS methods which may be selected to transmit data packets over the forward shared channel to the MS; receiving from the MS at the BTS a quality indication of transmission of data packets over the forward channel to the MS; and selecting a MCS method from a plurality of MCS methods which may be used to transmit data packets on the forward channel dependent upon the received quality indication.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 6, 2015
    Assignee: Vringo Infrastructure Inc.
    Inventors: Liangchi (Alan) Hsu, Mark W. Cheng, Giridhar Mandyam
  • Patent number: 8774102
    Abstract: The invention is a process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for the packet data transmissions on the forward channel. A process for controlling selection of MCS method to be used by a BTS (10) to transmit data packets over a forward shared channel to a MS (12) in accordance with the invention stores information at the BTS, the information containing MCS methods which may be selected to transmit data packets over the forward shared channel to the MS; receiving from the MS at the BTS a quality indication of transmission of data packets over the forward channel to the MS; and selecting a MCS method from a plurality of MCS methods which may be used to transmit data packets on the forward channel dependent upon the received quality indication.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: July 8, 2014
    Assignee: Vringo Infrastructure Inc.
    Inventors: Liangchi (Alan) Hsu, Mark W. Cheng, Giridhar Mandyam
  • Publication number: 20140119295
    Abstract: Apparatus and method for wireless communication in a wireless communication network includes determining availability of a primary uplink frequency of a primary carrier and a secondary uplink frequency of a secondary carrier for uplink transmissions and determining a primary radio condition of the primary uplink frequency meets a superior condition threshold and a second radio condition of the secondary uplink frequency meets an inferior condition threshold. Aspects of the method and apparatus also include transmitting, based on determining the primary radio condition meets the superior condition threshold and the second radio condition meets the inferior condition threshold, all pending control packet data units and all pending retransmission packet data units on the primary uplink frequency. Additionally, the UE duplicates a transmission of all data from the secondary uplink frequency on the primary uplink frequency.
    Type: Application
    Filed: August 1, 2013
    Publication date: May 1, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Sitaramanjaneyulu Kanamarlapudi, Liangchi Alan Hsu
  • Publication number: 20130039310
    Abstract: A process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for the packet data transmissions on the forward channel. A process for controlling selection of MCS method to be used by a BTS to transmit data packets over a forward shared channel to a MS stores information at the BTS, the information containing MCS methods which may be selected to transmit data packets over the forward shared channel to the MS; receiving from the MS at the BTS a quality indication of transmission of data packets over the forward channel to the MS; and selecting a MCS method from a plurality of MCS methods which may be used to transmit data packets on the forward channel dependent upon the received quality indication.
    Type: Application
    Filed: September 14, 2012
    Publication date: February 14, 2013
    Applicant: Vringo Infrastructure, Inc.
    Inventors: Liangchi (Alan) Hsu, Mark W. Cheng, Giridhar Mandyam
  • Patent number: 8107422
    Abstract: An apparatus and method for implementing uplink and downlink channel fine time alignments for 3GPP continuous packet data connection (CPC) channels comprising determining if a HS-SCCH radio frame boundary is detected before a UL DPCCH radio frame boundary; aligning a transition of a UE_DTX_DRX_Enabled control signal from FALSE to TRUE to the HS-SCCH radio frame boundary or the UL DPCCH radio frame boundary, tagging a first DRX subframe to be 0, and tagging a first DTX subframe to be 0 depending on the determination; and monitoring configuration signals to determine alignments. In one aspect, the order of the tagging depends on the determination.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: January 31, 2012
    Assignee: QUALCOMM Incorporated
    Inventor: Liangchi Alan Hsu
  • Patent number: 8032139
    Abstract: An approach is provided for selecting, by a multi-mode device, one among multiple networks. A plurality of overlay parameters associated with a plurality of networks are acquired, wherein the networks are different from one another. Each of the networks is rated using the overlay parameters according to one or more selection criteria. One of the networks is selected based on the rating.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: October 4, 2011
    Assignee: Nokia Corporation
    Inventors: Paul Oommen, Liangchi Alan Hsu
  • Patent number: 7995470
    Abstract: Apparatus, and an associated method, for utilizing traffic classes in a CDMA2000, or other packet radio, communication system. Traffic class designations are identified and used pursuant to communication set-up procedures. Depending upon the class identified in the request, allocations of communication resources are made. A traffic class signal generator generates values that identify a requested traffic class, and a formatter formats the traffic class into a message, such as a QoS BLOB that is used to allocate communication resources.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: August 9, 2011
    Assignee: Nokia Corporation
    Inventors: Mark W. Cheng, LiangChi (Alan) Hsu
  • Patent number: 7911954
    Abstract: Apparatus, and an associated method, for a frame-formatted radio communication system. Coordination is provided between MAC and RLP layers of a sending station through use of apparatus embodied at the MAC layer of the sending station. Also, apparatus is provided at a receiving station to reduce the generation of RLP layer NAK during segmented RLP frame retransmissions.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: March 22, 2011
    Assignee: Nokia Corporation
    Inventors: Mark W. Cheng, Liangchi (Alan) Hsu
  • Patent number: 7903610
    Abstract: A method for providing a reverse link handoff mechanism includes, with respect to communication between a mobile station and a first cell, initiating a start of a cell switch delay by transmitting a request that a new data channel be established with a second cell. The method further includes communicating with the first cell during the cell switch delay and upon an end of the cell switch delay, switching data transmission to the second cell. The cell switch delay is a time interval extending from a time that the request is transmitted until startig of reception of data packets via the new data channel by the second cell. The application of the cell switch delay is determined based on a location of the first cell and the second cell.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: March 8, 2011
    Assignee: Nokia Corporation
    Inventors: Mark W Cheng, Liangchi (Alan) Hsu
  • Patent number: 7848290
    Abstract: A method in a system including a mobile station, a group of active cells including a first serving cell and a second target cell and a controller of the active cells which switches forward link transmissions of data packets from the controller through the first serving cell to the mobile station to forward link transmission of data packets from the controller through a second cell to the mobile station.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: December 7, 2010
    Assignee: Nokia Corporation
    Inventors: Mark W. Cheng, Liangchi (Alan) Hsu
  • Publication number: 20100074188
    Abstract: An apparatus and method for implementing uplink and downlink channel fine time alignments for 3GPP continuous packet data connection (CPC) channels comprising determining if a HS-SCCH radio frame boundary is detected before a UL DPCCH radio frame boundary; aligning a transition of a UE_DTX_DRX_Enabled control signal from FALSE to TRUE to the HS-SCCH radio frame boundary or the UL DPCCH radio frame boundary, tagging a first DRX subframe to be 0, and tagging a first DTX subframe to be 0 depending on the determination; and monitoring configuration signals to determine alignments. In one aspect, the order of the tagging depends on the determination.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 25, 2010
    Applicant: QUALCOMM Incorporated
    Inventor: Liangchi Alan Hsu
  • Patent number: 7684366
    Abstract: Apparatus, and an associated method, for reporting QoS information associated with a reverse link communication service effectuated in a radio communication system, such as a CDMA2000 cellular communication system. The mobile station includes a service quality level selector that selects a selected service quality level, such as a communication rate, at which the communication service is to be effectuated. The mobile station further selectably includes a message generator that generates a service quality indication message. A detector detects the scheduling architecture of a network part of the communication system with which the mobile station communicates. And, information contained in the message generated by the message generator is dependent, in part, upon the scheduling architecture.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: March 23, 2010
    Assignee: Nokia Corporation
    Inventors: Mark W. Cheng, LiangChi (Alan) Hsu
  • Publication number: 20100022243
    Abstract: An approach is provided for selecting, by a multi-mode device, one among multiple networks. A plurality of overlay parameters associated with a plurality of networks are acquired, wherein the networks are different from one another. Each of the networks is rated using the overlay parameters according to one or more selection criteria. One of the networks is selected based on the rating.
    Type: Application
    Filed: November 16, 2007
    Publication date: January 28, 2010
    Inventors: Paul Oommen, Liangchi Alan Hsu
  • Patent number: 7561509
    Abstract: The invention is a process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for the packet data transmissions on the forward channel. A process for controlling selection of MCS method to be used by a BTS (10) to transmit data packets over a forward shared channel to a MS (12) in accordance with the invention stores information at the BTS, the information containing MCS methods which may be selected to transmit data packets over the forward shared channel to the MS; receiving from the MS at the BTS a quality indication of transmission of data packets over the forward channel to the MS; and selecting a MCS method from a plurality of MCS methods which may be used to transmit data packets on the forward channel dependent upon the received quality indication.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: July 14, 2009
    Assignee: Nokia Corporation
    Inventors: Liangchi (Alan) Hsu, Mark W. Cheng, Giridhar Mandyam
  • Publication number: 20080144570
    Abstract: The invention is a process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for the packet data transmissions on the forward channel. A process for controlling selection of MCS method to be used by a BTS (10) to transmit data packets over a forward shared channel to a MS (12) in accordance with the invention stores information at the BTS, the information containing MCS methods which may be selected to transmit data packets over the forward shared channel to the MS; receiving from the MS at the BTS a quality indication of transmission of data packets over the forward channel to the MS; and selecting a MCS method from a plurality of MCS methods which may be used to transmit data packets on the forward channel dependent upon the received quality indication.
    Type: Application
    Filed: February 21, 2008
    Publication date: June 19, 2008
    Inventors: Liangchi (Alan) Hsu, Mark W. Cheng, Giridhar Mandyam
  • Patent number: 7336632
    Abstract: Apparatus, and an associated method, for reporting QoS information associated with a reverse link communication service effectuated in a radio communication system, such as a CDMA2000 cellular communication system. The mobile station includes a service quality level selector that selects a selected service quality level, such as a communication rate, at which the communication service is to be effectuated. The mobile station further selectably includes a message generator that generates a service quality indication message. A detector detects the scheduling architecture of a network part of the communication system with which the mobile station communicates. And, information contained in the message generated by the message generator is dependent, in part, upon the scheduling architecture.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: February 26, 2008
    Assignee: Nokia Corporation
    Inventors: Mark W. Cheng, LiangChi (Alan) Hsu
  • Patent number: 7054316
    Abstract: The present invention is related to a method and system for interlayer control where a Protocol Data Unit (PDU) is received from a lower protocol layer at a upper layer where the lower and upper layer are both involved in a retransmission function, a re-sequencing function, or both functions. The lower layer signals the upper layer for retransmission of a PDU when the retransmissions of that PDU have been exhausted and failed at the lower layer. The signaling scheme from the lower layer to the upper layer is an ABORT notification. This ABORT notification comes with associated parameters to indicate to the upper layer which PDU can be requested for retransmission from the upper layer.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: May 30, 2006
    Assignee: Nokia Corporation
    Inventors: Mark W. Cheng, Liangchi (Alan) Hsu
  • Patent number: 7050397
    Abstract: Apparatus, and an associated method, for a frame-formatted radio communication system. Coordination is provided between MAC and RLP layers of a sending station through use of apparatus embodied at the MAC layer of the sending station. Also, apparatus is provided at a receiving station to reduce the generation of RLP layer NAK during segmented RLP frame retransmissions.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: May 23, 2006
    Assignee: Nokia Corporation
    Inventors: Mark W. Cheng, Liangchi (Alan) Hsu
  • Patent number: RE44447
    Abstract: A method in a system including a mobile station, a group of active cells including a first serving cell and a second target cell and a controller of the active cells which switches forward link transmissions of data packets from the controller through the first serving cell to the mobile station to forward link transmission of data packets from the controller through a second cell to the mobile station.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: August 20, 2013
    Assignee: Nokia Corporation
    Inventors: Mark W. Cheng, Liangchi (Alan) Hsu