Patent ID: 8675768

Claim:
A method employed in wireless communication system, the method comprising: transmitting at least one power control reference signal from an antenna selected from a group of M antennas, with M a positive integer; conveying a power headroom report from the antenna employed to report the at least one power control reference signal, wherein the power headroom report is based at least in part on a reference power spectral density (PSD) level for transmitting the at least one power control reference signal, and the power headroom report adjusts the power that a base station assigns to a mobile terminal for transmitting data in a reverse link; and transmitting a pilot signal from each antenna in the set of M antennas for estimating a multiple-input multiple output channel when M>1, and a SIMO channel when M=1, wherein the power headroom report is determined based at least on a power headroom of a power amplifier in the physical antenna selected to report at least one power control reference signal.