APPAREARUS AND METHOD FOR TRANSMITTING DOWNLINK FRAME IN WIRELESS COMMUNICATION SYSTEM

摘要

A method for transmitting a downlink frame in a wireless communication system is provided to improve cell search performance by placing main and sub synchronization channels adjacent to the boundary of a sub frame. A method for transmitting a downlink frame in a wireless communication system includes the step of: generating a first synchronization channel by inserting a first guard interval into a first synchronization channel signal; generating a second synchronization channel by inserting a second guard interval into a second synchronization channel signal; arranging the first synchronization channel in the downlink frame to place the first synchronization channel at the front of the boundary of the sub frame; and arranging the second synchronization channel in the downlink frame to place the second synchronization channel at the rear of the boundary of the sub frame. One of the first and second synchronization channels is a main synchronization channel, and the other is a sub synchronization channel.