RESERVATION REQUESTING AND ALLOCATING METHOD ON A TRANSMISSION MEDIUM

摘要

The invention relates to a communication system comprising a main station, a transmission medium, and terminals. The terminals transmit requests to the main station for the purpose of having reservations granted to them on the transmission medium. Each request indicates a number of reservations. This number of reservations is obtained in a known manner from the number of data packets waiting in the transmission memory of the terminal (MEM(i,t)), from which the number of reservations already requested but not yet granted (counted by a request counter COUNT(i)) is deduced. Upon receiving a request, the main station adds the number of reservations indicated (RESA(i,t)) to an allocation counter (ALLOC(i)) associated with the requesting terminal (i). The invention improves this requesting method so as to render it less vulnerable to data losses. It consists in a resetting of the request counter (COUNT(i)) and allocation counter (ALLOC(i)), for example when an anomaly is detected in the transmission of the data (51). Application: Interactive satellite distribution network.