Frame generation method based on orthogonal frequency division multiplexing technology in TDD mode

This invention discloses a method for generating frames under a TD duplex mode based on an OFDM technology, which writes down-line data into a first time slot TS0' and writes up-line data into a second time slot TS1' and writes the up or down line data into third to seventh time slots TS2-TS6 to constitute a first 5ms half-frame of the 10ms and then constitutes the latter 5ms half-frame with the same method to generate a radio frame of 10ms, writes a down-line assist synchronous signal into the second from the last OFDM symbols of the TS0' and writes the down master synchronous signal into the last OFDM symbol of the TS0' and writes random access signals of the up line into any or continuous multiple time slots of the up line.