METHOD OF SETTING UP MOBILE-TO-MOBILE CALL WITHOUT MOBILE SWITCHING CENTER

摘要

PURPOSE: A method of setting up mobile-to-mobile call in cellular radio telecommunication system is provided to set up mobile-to-mobile call by using simulation block in base station controller instead of mobile switching center. CONSTITUTION: A method of setting up mobile-to-mobile call comprises the steps of; when a mobile station requests base station controller to transmit through transmitting base station, a call process block in base station controller requests simulation block to transmit; the simulation block connects mobile station to reception mobile station call, by using the location registering information of reception mobile station and condition information stored in base station controller. For this, simulation block process a message defined as A-interface standard between base station controller and mobile switching center.