Method and apparatus for power aware receive diversity control

摘要

While a user equipment (UE) is in a connected mode, the UE may receive only a limited quantity of data. During this phase, a receive diversity configuration may not be enabled, in an effort to conserve power on the UE side. However, in marginal signal conditions and a poor radio environment, downlink performance at the UE side may be enhanced by enabling receive diversity, irrespective of the limited data received by the UE. However, while receive diversity may improve the signal-to-noise ratio (SNR) at the UE end in marginal signal conditions, the UE may also incur a penalty on power consumption. Therefore, certain aspects of the present disclosure provide techniques for dynamically controlling the receive diversity of a wireless device to improve the downlink procedure performance, while minimizing power consumption due to the usage of a second receive chain when in connected mode.

主权项

1. A method for wireless communications, comprising:
receiving, in a first receive chain, data; detecting, in the first receive chain based on the received data, a triggering event for enabling a second receive chain during downlink transmissions, wherein the first receive chain and the second receive chain each comprises an antenna, and wherein the triggering event comprises detecting that an energy of symbols of the received data exceeds a threshold value; enabling the second receive chain based on the triggering event; and disabling at least a portion of the second receive chain after a duration, wherein the duration is indicated by the triggering event.