Patents Represented by Attorney, Agent or Law Firm Sandra Godsey
  • Patent number: 6763492
    Abstract: A method and apparatus for efficient encoding of linear block codes uses a lookup table including a set of impulse responses to support faster performance by encoding in parallel. Advantages include a scalability that is lacking in existing schemes.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: July 13, 2004
    Assignee: Qualcomm Incorporated
    Inventors: James Y. Hurt, Jeffrey A. Levin, Nikolai Schlegel
  • Patent number: 6751199
    Abstract: A method and an apparatus for rate control in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may send data packets to an access terminal (AT). The data rate is selected to maintain targeted packet error rate (PER). The AT's open loop algorithm measures received signal to interference and noise ratio (SINR) at regular intervals, and uses the information to predict an average SINR over the next packet duration. The AT's closed loop algorithm measures a packet error rate (PER) of the received signal, and uses the PER to calculate a closed loop correction factor. The loop correction factor is added to the SINR value predicted by the open loop, resulting in an adjusted SINR. The AT maintains a look up table, which comprises a set of SINR thresholds that represent a minimum SINR necessary to successfully decode a packet at each data rate.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: June 15, 2004
    Assignee: Qualcomm Incorporated
    Inventors: Nagabhushana T. Sindhushayana, Rashid A. Attar, Eduardo A. S. Esteves
  • Patent number: 6621804
    Abstract: A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: September 16, 2003
    Assignee: Qualcomm Incorporated
    Inventors: Jack Holtzman, Tao Chen