DEVICE AND METHOD FOR RANDOM ACCESS IN A WIRELESS COMMUNICATION SYSTEM USING BEAMFORMIG

摘要

Embodiments of the present invention are to provide a random access channel device capable of supporting a beam selection process effectively in a wireless communication system using beam-forming and a signal transmission/reception method according to the same. A terminal selects an optimal downlink transmission beam among downlink transmission beams transmitted from a base station and transmits random access channel information including indication information indicating the optimal downlink transmission beam to the base station. A base station receives random access channel information including indication information indicating an optimal downlink transmission beam among downlink transmission beams and detects a random access channel sequence and the optimal downlink transmission beam from the received random access channel information. [Reference numerals] (330) Generating and transmitting random access channel sequence and optimal downlink transmission beam indication information; (350) Reporting optimal uplink transmission beam through optimal downlink transmission beam; (AA) Measuring optimal downlink transmission/reception beam; (BB) Decoding BCH information; (CC) Generating and transmitting periodically SCH and BCH; (DD) BCH includes RACH structure information; (EE) Detecting RACH; (FF) Random access channel sequence; (GG) Optimal downlink transmission beam indication information; (HH) Measuring optimal uplink transmission/reception beam