Patent ID: 9432950
Filing Date: 2016-08-30
CPC Classification: H04W

Claim Text:
1. A communications apparatus, comprising: an RF signal processing device, capable of supporting carrier aggregation and configured to process RF signals; at least a baseband signal processing device, configured to process baseband signals; and a processor, configured to control operations of the RF signal processing device and the baseband signal processing device, wherein the processor further receives a power control signal from a peer communications apparatus, obtains an assigned transmission power which is assigned by the peer communications apparatus for the communications apparatus to transmit a reference signal for uplink carrier selection according to information carried in the power control signal, determines a spectral efficiency estimation value of the communications apparatus and directs the RF signal processing device to transmit the reference signal with a reduced transmission power or the assigned transmission power according to the determined spectral efficiency estimation value; wherein the reference signal is transmitted with the reduced transmission power in a physical uplink shared channel (PUSCH).