METHODS AND APPARATUS FOR D2D COMMUNICATION DEVICE

摘要

The present invention relates to: a power control method for solving IBE and ICI issue caused when a PUSCH of a D2D terminal receives a PUCCH/PUSCH signal of a base station when the PUSCH of the D2D terminal and PUCCH/PUSCH of an existing cellular terminal are frequency-division-multiplexed (FDM) and are used; a power control method for solving ISI issue caused when the PUSCH of the D2D terminal receives a cellular PUSCH signal when the PUSCH of the D2D terminal and the cellular PUSCH, which is a data channel of an existing cellular terminal, are TDM and are used.; a D2D transmission power control method for supporting three discovery classes of a short range, a medium range, and a long range which are defined based on a range (or a coverage) of discovery in D2D discovery; and a D2D repetitive transmission method for maintaining the D2D discovery and the range (or the coverage) of D2D communications when D2D transmission power is controlled.