METHOD, APPARATUS, AND SYSTEM FOR REPORTING POWER HEADROOM IN A MOBILE COMMUNICATION SYSTEM

摘要

The present invention relates to a method, apparatus, and system for efficiently reporting power headroom (PH) for optimizing uplink coverage. A method in which user equipment reports power headroom in a mobile communication system according to one embodiment of the present invention comprises the following processes: receiving power headroom report (PHR) set-up information including a PH threshold value from a base station; determining whether to perform a PHR trigger by comparing the PH value, which indicates the available transmission power of the user equipment, with the PH threshold value; and, if the PH value is smaller than the PH threshold value, transmitting, to the base station, PHR-related report information which reflects influences caused by the scheduling of the base station.