Wideband time division duplex physical layer random access mobile communication system, the method

The present invention provides a method for physical layer random access wideband time division duplex cellular system, comprising: a terminal receiving a system broadcast message of a cell, the cell UpPTS time slot configuration information obtained in the frequency domain; UpPTS time slot according to the configuration of the terminal transmitting a random access sequence to the base station in the UpPTS time slot. The configuration information of the UpPTS timeslot in the frequency domain of the UpPTS time slot comprises the entire used bandwidth is divided into a number of frequency band information, location information for each frequency band and the bandwidth of each band size information. The physical layer of the present invention to provide a random access method such that different terminals may use different frequency bands UpPTS time slot, thereby reducing the probability that the terminal transmits a random access sequence collision competition, reducing the access time, can achieve efficient and rapid random access procedure.