CELL SEARCH METHOD FOR OFDM BASED FDD/TDD DUAL MODE MOBILE STATION AND BASE STATION TRANSMISSION SCHEME

摘要

A cell search method for an OFDM(Orthogonal Frequency Division Multiplexing) based FDD(Frequency Division Duplex) and TDD(Time Division Duplex) dual mode mobile station and base station transmission scheme is provided to realize a cell searcher for simply operating both an FDD mode and a TDD mode. A method for transmitting a forward synchronization signal includes the steps of: generating a frame including a plurality of sync blocks; and transmitting the frame through a forward link, wherein the frame includes a first SCH(Synchronization Channel) sequence and a plurality of second SCH sequence and specifies a cell identifier by the first SCH sequence and the plurality of second SCH sequence. The first SCH sequence supplies sync block timing information and the plurality of second SCH sequences supply frame timing information. Both the first SCH sequence and the second SCH sequences are used in TDD and FDD systems.