APPARATUS AND METHOD FOR TRANSMITTING POWER HEADROOM INFORMATION IN A MULTI-CARRIER SYSTEM

摘要

Provided are a method for transmitting power headroom (PH) by a terminal in a multi-carrier system and a terminal using the method. The method comprises the following steps of: receiving power determination information from a base station; determining the maximum transmitting power for each serving cell using the power determination information and specific parameters of a terminal; determining the PH of each serving cell based on the respective maximum transmitting power; and transmitting, to the base station, the control information which includes the maximum transmitting power and the PH of each serving cell, wherein the control information is characterized by including the information which indicates a serving cell from the serving cells which corresponds to the respective maximum transmitting power and PH of the serving cells. [Reference numerals] (S810) Power determination information;(S820,S870) Uplink grant;(S830) Determine maximum transmitting power for each element carrier wave;(S840) Estimate power margin;(S850) Report maximum transmitting power and power margin information;(S860) Uplink scheduling