Method and apparatus for controlling signal power level in a communication system
AssigneeQUALCOMM Incoporated
InventorsKeum-Chan Whang, Hyuck-Chan Kwon
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Abstract
A novel and improved method and apparatus for controlling signal power level in a communication system (100) is provided by determining first and second signal to interference ratios of a received signal, respectively before and after an interference cancellation, determining a difference between the first and second signal to interference ratios, and determining, based on the difference, a signal to interference threshold for controlling power level of a signal transmitted from a source of the received signal.
Claims12
In a communication system, a method comprising:
- performing an interference cancellation process on a received signal;
- determining first and second signal to interference ratios of said received signal respectively before and after said performing said interference cancellation;
- determining a difference between said first and second signal to interference ratios;
- determining, based on said difference, a signal to interference threshold for controlling a power level of a signal transmitted from a source of said received signal.
In a communication system, a method comprising:
- receiving a first signal;
- performing an interference cancellation process on said first received signal;
- determining first and second signal to interference ratios of said first received signal, respectively before and after said performing said interference cancellation;
- determining a difference of said first and second signal to interference ratios;
- determining, based on said difference, a signal to interference threshold for controlling a power level of a signal;
- receiving a second signal;
- measuring a signal to interference of said second received signal;
- comparing said signal to interference of said second received signal with said signal to interference threshold;
- commanding a source of said signal to power up or down the power level of said signal based on said comparing.
In a communication system, an apparatus comprising:
- a receiver for receiving a signal;
- a signal processor for performing an interference cancellation on said received signal;
- a correlator for determining first and second signal to interference ratios of said received signal, respectively before and after said interference cancellation, to produce a difference between said first and second signal to interference ratios;
- a controller for determining a signal to interference threshold based on said difference for controlling power level of a signal transmitted from a source of said received signal.
Dependencies are inferred from the claim text.