Patent ID: 6311065
Filing Date: 2001-10-30
Classification: H04W

Abstract:
A mobile communication system comprising:a plurality of radio base stations forming respective radio communication zones according to one of a small zone structure and a sector structure, each of said radio base stations performing a radio channel setting control including a handover with respect to a call originated for a mobile station located in one of said radio communication zones; andan exchange connected to each of said radio base stations via a communication link so that said exchange performs a call process of said call in association with the radio channel setting control performed by said radio base stations,said mobile communication system further comprising:a movement predicting unit which predicts, after said call becomes a completed call and prior to a handover operation, a movement of said mobile station from one of said radio communication zones in which said mobile station is located to another one of said communication zones adjacent to said one of said radio communication zones, a prediction of said movement being performed based on at least one of procedures of the radio channel setting control and the call process;a candidate zone selecting unit which is activated when said movement is predicted by said movement predicting unit so as to select candidate radio communication zones which are candidates for transferring said completed call to, based on said predicted movement, said candidate zone selecting unit forming a communication path to said candidate radio communication zones, said communication path to be connected to a radio channel in said communication link prior to initiation of a handover to a radio communication zone from among said candidate radio communication zones, wherein an asynchronous transfer mode is applied to said communication link, and said candidate zone selecting unit logically forms a path without occupying a transmission band of said communication link,wherein said radio base station and said exchange include means for acquiring a transmission band of a path formed by said candidate zone selecting unit with respect to the candidate radio communication zone which corresponds to a radio communication zone selected for handover of the completed call based on procedures of the radio channel setting control and the call process.