METHOD FOR LIMITING ACCESS OF USERTS DEVICES TO COMMUNICATION SYSTEM AND THE LATTER TO USERS; COMMUNICATION CENTER OPERATION IN SYSTEM; METHOD FOR CONTROLLING ACCESS OF USERÆS DEVICES TO COMMUNICATION SYSTEM; COMMUNICATION SYSTEM AND ITS ACCESS LIMITING DEVICE

摘要

FIELD: cellular communications. SUBSTANCE: communication system has low-orbit satellites characterized by communication channel distribution among users in cells. Each userÆs device is programmed by class identifier incorporated in it. When it is desired to limit satellite lock-on by certain limited class or combination of classes, such as when heavy loads are handled, satellite relays list of identifiers of requested classes to enable access to communication system for non-inhibited class only. Method uses data on real-time cell loading and on preceding cell loading based on earlier experience and can be programmed for limiting access to give priority to emergency radio communication services in case of accidents. EFFECT: provision for regulating userÆs access to communication system on hierarchy basis for classes. 23 cl, 9 dwg