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Synchronization of timing advance and deviation

  • US 7,023,835 B2
  • Filed: 04/05/2001
  • Issued: 04/04/2006
  • Est. Priority Date: 04/06/2000
  • Status: Active Grant
First Claim
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1. A communication system for supporting base station (BS)/mobile terminal (MT) wireless bi-directional communications via utilization of a radio frame format defined by radio frames that include a numeric identifying designation comprising:

  • a BS having;

    a transmitter configured to transmit selectively formatted communication data to MTs within system radio frames, anda receiver configured to receive communication data from MTs within system radio frames;

    said BS receiver having an associated processor configured to measure timing deviation (TD) of received radio frames in which communication data is received from a selected MT;

    a timing advance (TA) signal generator associated with said BS configured to provide TA command signals for transmission by said BS to selected MTs;

    said TA command signal generator configured to generate TA command signals which include;

    TA data which is calculated based upon measured TD in a received radio frame for a selected MT, anda Connect Frame Number (CFN) specifying a particular radio frame for effectuating a timing adjustment by the selected MT; and

    said BS processor configured to measure the TD for communication data received from a selected MT to which a TA command signal had been transmitted in the frame specified in the CFN of the transmitted TA command signal.

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