Power control method for device-to-device (D2D) communication in wireless communication system and apparatus therefor

摘要

The present invention relates to a method for power control by a first terminal that performs device-to-device (D2D) communication in a wireless communication system. More specifically, the method comprises the steps of: receiving, from a base station, a first signal including power control information defined for D2D communication; and transmitting a second signal according to transmission power determined on the basis of the received first signal, wherein the power control information indicates one of broadcast and groupcast, and the second signal is differently masked and transmitted according to a transmission method of the second signal.

主权项

1. A method of controlling transmit power by a first user equipment (UE) performing D2D (device-to-device) communication in a wireless communication system, comprising the steps of:
receiving, from a base station, a first message containing power control information, wherein the power control information includes a pathloss compensation value; and transmitting a second message with a transmit power determined by the first UE in accordance with the received power control information, wherein, when the second message is for one of a broadcast or a groupcast for D2D communication:
the transmit power is determined without applying the pathloss compensation value,if the pathloss is equal or lower than an eNB pathloss threshold, the transmit power is configured to be linearly increased, andif the pathloss is equal or greater than a cell edge threshold, the transmit power is configured to be linearly decreased.