MOBILE COMMUNICATION SYSTEM, MOBILE STATION AND RADIO BASE STATION

摘要

A channel assigning method for used in an IP multimedia sub-system for providing audio communication and non-audio communication by connecting a wireless access network with an IP network. According to the channel assigning method, an enhanced separate channel is assigned to an audio communication channel in an upstream wireless link to improve the utilization efficiency of a radio resource (hardware resource) in the audio communication channel in IMS and prevent degradation of the line capacity.