METHOD FOR TRANSITION OF CONNECTION SCHEME IN GROUP COMMUNICATION

摘要

PURPOSE: A connection method conversion method in group communication is provided to determine the conversion of unicast connection lines by considering of the channel state of a mobile station. CONSTITUTION: A base station establishes multicast connection in plural mobile stations which attend to group communication. The base station determines the conversion of unicast connection based on the number of the mobile stations or the channel state of the mobile stations. In case the conversion of the unicast connection line is determined, the base station establishes the unicast connection to the each mobile station.