TDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF

摘要

A cell searching method in a time-division multiplexing (TDM)-based Orthogonal Frequency-Division Multiplexing (OFDM) cellular system having a primary synchronization channel and secondary synchronization channel, and a frame transmission method and system thereof are provided. In the cell searching method in an OFDM cellular system including a plurality of cells allocated with scrambling codes unique to the cells, wherein each base station transmits a frame of each cell and a terminal searches for a target cell by using the frame received from the base station, the cell searching method includes: acquiring Sync-block synchronization corresponding to a period of a primary synchronization channel symbol included in the frame received by the terminal and a primary synchronization channel sequence number by using the primary synchronization channel symbol; and acquiring a frame boundary of the frame and the target cell of the terminal based on the Sync-block synchronization and the primary synchronization channel sequence number by using a secondary synchronization channel symbol included in the frame received by the terminal. Accordingly, the synchronization can be acquired with low complexity.