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Wireless network having joint power and data rate adaptation

  • US 6,950,670 B2
  • Filed: 10/31/2001
  • Issued: 09/27/2005
  • Est. Priority Date: 10/31/2001
  • Status: Expired due to Term
First Claim
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1. A method for jointly adapting power and data transmission rate in a wireless network, comprising:

  • setting a transmission rate for a mobile station;

    measuring a signal quality for the mobile station;

    adjusting, if necessary, a transmission power level towards a power control target associated with the transmission rate;

    adjusting, if necessary, the transmission rate for the mobile station based upon signal quality measured over a period of time;

    determining an average signal quality level over the period of time;

    incrementing a rate adaptation counter if the average signal quality is greater than or equal to a predetermined low threshold for the transmission rate;

    decrementing the rate adaptation counter if the average signal quality is less than the predetermined low threshold for the transmission rate;

    updating the transmission rate based upon the rate adaptation counter;

    updating the transmission rate for a next frame; and

    updating the next frame transmission to a minimum of the transmission rate plus a first predetermined amount and a maximum supported transmission rate based upon a comparison of a value in the rate adaptation counter and a predetermined up threshold.

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