IDLE CHANNEL RETRIEVING METHOD

摘要

PURPOSE:To reduce the overlapped generation of a communication channel at each base station arranged in a distance limit interfering mutually in an autonomous distributed control system. CONSTITUTION:Each base station forming mutually interfering zones 1 to 7 is assigned a base station code (b1 to b7) so that the channel number of an idle channel retrieving start channel decided based on the base station code (b1 to b7) of each station nearly equally divides all the communication channels (m-sets) to which the channel numbers are given in serial. Then, each base station decides the channel number of the idle channel retrieving start channel based on the base station code of its own so as to start idle channel retrieval in an order from the communication channel of the decided channel number.