Method and apparatus for adjusting a signal-to-interference threshold in a closed loop power control communications system
AssigneeQUALCOMM Incorporated
InventorStein A. Lundby
Life of this patent
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Abstract
A method and apparatus for dynamically adjusting the signal-to-interference ratio (SIR) threshold used to control signal transmission power in closed loop communication systems. The closed loop power control comprises an inner loop that provides up/down transmission power control commands to a transmitter based upon a comparison of the SIR for a received signal to the threshold SIR. The outer loop dynamically adjusts the threshold SIR using historic inner loop power control information. When it is detected that the inner loop is not acceptably performing power control, the target SIR is not changed, or may increased or decreased more or less than 0.5 dB or 0.5 dB/99, respectively.
Claims6
A method for adjusting a signal-to-interference ratio (SIR) threshold of a closed loop power control system used in a wireless communications network, comprising:
- generating inner loop power control commands in accordance with a comparison between a first quality metric and a variable threshold;
- and
- adjusting said variable threshold in accordance with said first quality metric.
A computer readable medium embodying a method for adjusting a signal-to-interference ratio (SIR) threshold of a closed loop power control system used in a wireless communications network, comprising:
- generating inner loop power control commands in accordance with a comparison between a first quality metric and a variable threshold;
- and
- adjusting said variable threshold in accordance with said first quality metric.
An apparatus for adjusting a signal-to-interference ratio (SIR) threshold of a closed loop power control system used in a wireless communications network, comprising:
- means for generating inner loop power control commands in accordance with a comparison between a first quality metric and a variable threshold;
- and
- means for adjusting said variable threshold in accordance with said first quality metric.
Dependencies are inferred from the claim text.