Patent ID: 7310303

Claim:
A method of transmitting a number of ranging codes (RCs) and their backoff values for use in each ranging process by a transmission side, to reception sides, wherein a ranging procedure between the transmission side and the reception sides is classified into an initial ranging process, a bandwidth request ranging process, and a periodic ranging process, the method comprising: determining a number of initial RCs for the initial ranging process, a number of bandwidth request RCs for the bandwidth request ranging process, and a number of periodic RCs for the periodic ranging process; determining a backoff value of the periodic RCs corresponding to the number of the periodic RCs; and transmitting information of initial RCs corresponding to the determined number of initial RCs, the bandwidth request RCs corresponding to the determined number of bandwidth request RCs, the periodic RCs corresponding to the determined number of periodic RCs, and the backoff value of the periodic RCs to the reception sides.