Method of selecting a radio base station in a mobile communication

摘要

A method of selecting a radio base station (BS) in a mobile communication system adapting a plurality of voice coding methods is provided. This method reduces a probability of failure in allocating speech channel at the BS after having been selected. Each BS broadcasts the usage rate of the speech channel for each method through a control channel, in connection with speech channel groups which can be allocated. The MS selects a BS as a candidate to be connected, which is optimum in view of receiving state of the control channel and the usage rate of the speech channel, at the time of waiting state after having power put on or during hand-over operation.