Patent ID: 8538472
Filing Date: 2013-09-17
Classification: H04B,H04W

Abstract:
1. A user equipment, comprising: a plurality of antenna ports configured to receive downlink signals from a base station; a plurality of receiver circuits each coupled to a respective one of the plurality of antennas ports and configured to process the received downlink signals; a quality estimation unit to estimate a quality of the received downlink signals, wherein the quality estimation unit comprises a signal-to-interference-and-noise ratio (SIR) estimation unit configured to estimate SIR values of transmission power control (TPC) symbols or of pilot symbols and TPC symbols comprised in the downlink signals as the quality of the received downlink signals; a power loop controller configured to generate transmit power control commands based on the estimated quality of the received downlink signals, the transmit power control commands configured to adjust a power of the downlink signals generated by the base station; and a diversity controller configured to selectively activate and deactivate one or more of the receiver circuits based on the estimated quality of the received downlink signals.