RESPONSE LINE ALLOCATING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a response line allocating method to avoid concentration of response signals and to simultaneously reduce frequency capacity and the number of time slots of response lines when the response lines are allocated to many user stations. SOLUTION: A center station grasps the degree of correlation among a plurality of user stations regarding transmission of the response signals, grasps the number K of simultaneous transmission signals from the plurality of user stations allowable in a communication systems to be used, constitutes one group by integrating optional user stations of K at most when no correlation among the plurality of user stations is regarded to exist regarding the transmission of the response signals, constitutes a plurality of groups, allocates the respective user stations to any one of the groups, one response line is allocated for each of the groups when the user stations exceeding K exist and the user station transmits the response signal by the response line allocated to the group in which the self-station is included.