ACCESSING OF TRANSMISSION CHANNELS OF A COMMUNICATION SYSTEM

摘要

ACCESSING OF TRANSMISSION CHANNELS OF A COMMUNICATION SYSTEM In a communications system with a plurality of subscriber stations independent from each other, where each subscriber station can access according to a multiple access method a joint duplex transmission channel, the probability becomes very large for simultaneous attempts to get access and thereby the probability of signal destruction becomes particularly large. In order to avoid a blockage of the service channel each subscriber station occupies the duplex transmission channel with a short access signal for initiating a transmission starting with the subscriber station. The subscriber station characterized by the position in time and/or the information contents of the signalling short designation call is thereupon invited by the central base station to provide complete identification information.