Patent ID: 6961577
Filing Date: 2005-11-01
Classification: H04B,H04M,H04W,Y02D

Abstract:
1. A communication channel allocation method for allocating a communication channel to communications between a mobile terminal device and a second radio base station using a second frequency band which is close to a first frequency band used by a first radio base station, the communication channel allocation method comprising the steps of: controlling a received power of signal form the one mobile terminal device at the second radio base station to be constant; obtaining allocation rates for channels to be used for communications between the second radio base station and the one mobile terminal device according to a total number of mobile terminal devices that are carrying out communications with the second radio base station and a total received power of signals other than signals from the one mobile terminal device; obtaining a channel switching distance to be a criterion for switching communication channels, according to the allocation rates; detecting a distance between the second radio base station and the one mobile terminal device; and allocating a communication channel of a frequency far from the first frequency band in the second frequency band to the communications between the second radio base station and the mobile terminal device when the distance is greater than the channel switching distance.