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Communication method and its power control method

  • US 20020021682A1
  • Filed: 06/28/2001
  • Published: 02/21/2002
  • Est. Priority Date: 06/30/2000
  • Status: Active Grant
First Claim
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1. A communication system for performing code-division multiple access communications between a mobile station and a base station wherein;

  • said base station comprises;

    base station receiving means for receiving signals from said mobile station and outputting a first reception signal;

    interference canceling means for canceling a multiple access interference signal contained in said first reception signal;

    interference cancellation effect estimating means for estimating a post-interference cancellation signal-to-interference power ratio of said first reception signal which is currently being received;

    control command generating means for generating a power control command by comparing said post-interference cancellation signal-to-interference power ratio determined by said interference cancellation effect estimating means with a target value for power control; and

    base station transmitting means for transmitting said power control command to said mobile station; and

    said mobile station comprises;

    mobile station receiving means for receiving a signal from said base station and outputting a second reception signal; and

    mobile station transmitting means which adjusts the power of the transmission signal transmitted to said base station based on said power control command contained in said second reception signal.

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