Dynamic SNR adjustment in a receiver supporting 256QAM

摘要

To support very high QAM rates, a user equipment (UE) needs extremely good signal-to-noise ratio (SNR). Using a receiver configuration that improves SNR comes at the expense of higher power consumption. However, consuming higher power to support very high QAM rates when poor channel conditions are present is a waste of power. By correlating the modulation and coding scheme used by the UE with the UE channel quality estimate, the UE can modify the receiver configuration to improve SNR only when channel conditions support very high QAM rates.

主权项

1. A method of wireless communication of a user equipment (UE) including a receiver, comprising:
changing a mode of operation from a first signal-to-noise ratio (SNR) mode to an increased SNR mode, the mode of operation being changed by adjusting a gain state of at least one of a low-noise amplifier or a baseband amplifier within the receiver; sending channel quality information (CQI) to a base station indicating an ability to receive data at the increased SNR; and receiving the data from the base station according to a higher order modulation and coding scheme (MCS) corresponding to the increased SNR when the base station is capable of providing the data at the higher order MCS.