Patents Represented by Attorney Tyler J. Overall
  • Patent number: 8351467
    Abstract: A subscriber station may receive a WiMAX connection identifier (CID) scheduling message from a 2G/3G network. The WiMAX CID scheduling message may include scheduling information that indicates when Multimedia Broadcast Multicast Service (MBMS) data for the subscriber station will be transmitted from a WiMAX network. The subscriber station may receive the MBMS data from the WiMAX network in accordance with the scheduling information.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: January 8, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Steven Cheng, Tom Chin
  • Patent number: 8352823
    Abstract: Systems and methods for handling automatic repeat request (ARQ) resets are described. A first device may receive a message initiating an ARQ reset procedure transmitted by a second device. The first device may determine if both the first and second devices have initiated an ARQ reset procedure. The first device may take action to limit a loss of blocks of data exchanged between the first and second devices, if both the first and second devices have initiated an ARQ reset procedure.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: January 8, 2013
    Assignee: QUALCOMM Incorporated
    Inventor: Quanzhu Duan
  • Patent number: 8351362
    Abstract: Methods and apparatus for waking a mobile station (MS) from a power saving mode to receive a media access control (MAC) management message (e.g., DCD/UCD, MOB_NBR-ADV, and SII-ADV) the MS has not yet received. The MS may wake from the power saving mode after detecting a mismatch between a set of media access control (MAC) management message parameters last received by the MS and the information found in an enhanced broadcast control pointer information element (BCP-IE) transmitted in a downlink map (DL-MAP). In this manner, the MS may be prevented from waking up unnecessarily, thereby providing high power efficiency.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: January 8, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Steven D. Cheng, Patrick Lim, Fangqi Hu
  • Patent number: 8320510
    Abstract: Aspects of the disclosure provide unbiased channel equalization applied in a MIMO OFDM system with spatial multiplexing. According to certain embodiments, a MMSE receiver can be implemented with the QR decomposition (QRMMSE detection) instead of direct inversion of channel matrix by exploiting an augmented channel matrix. A simple and efficient bias removal technique is presented herein, whereby unbiased QRMMSE equalization may provide identical detection accuracy as a conventional unbiased MMSE approach. For certain embodiments, multiple access interference may be further reduced if the VBLAST version of the unbiased QRMMSE detection is applied.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: November 27, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Youngjae Kim, Je Woo Kim, Jong Hyeon Park
  • Patent number: 8311159
    Abstract: Techniques proposed in the present disclosure may used to update an FFT window position and perform linear phase compensation for OFDM wireless systems with up to two antennas at the receiver. Techniques presented herein may help resolve a problem of determining an optimum FFT window position under the condition that the length of channel impulse response is larger than the length of cyclic prefix.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: November 13, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Junqiang Li, Matthias Brehler, Je Woo Kim