Power savings in hierarchically coded modulation

摘要

A wireless communication apparatus in a hierarchically coded modulation system can use error control mechanisms generated during decoding of base layer information to predict a probability of successful demodulation of enhancement layer information. Performance in the demodulation of the base layer correlates to performance in the demodulation of the enhancement layer. The receiver can determine whether to attempt demodulation of temporally correlated enhancement layer data based in part on the predicted probability of success. If the receiver determines not to demodulate the enhancement layer, the receiver can power down the enhancement layer demodulator, or otherwise minimize the power expended in the enhancement layer demodulator.

主权项

1. A computer-readable non-transitory medium including program code stored thereon, comprising:
program code for receiving a hierarchically coded signal having base layer data and enhancement layer data; program code for decoding base layer data from the hierarchically coded signal; program code for determining a signal quality metric based at least in part on decoding the base layer data; program code for determining whether an enhancement layer decoder decodes the enhancement layer data based upon the signal quality metric meeting a predetermined signal metric threshold, wherein when the signal quality metric is greater than or equal to the predetermined signal metric threshold the enhancement layer decoder decodes the enhancement layer data; and program code for conserving power of user equipment that would otherwise be expended during decoding the enhancement layer data if the signal quality metric fails to meet the predetermined signal metric threshold, wherein the conserving power comprises powering down the enhancement layer decoder.