Abstract: In a mobile communication system, radio channel capacity can be secured. A plurality of base stations transmit to a mobile station information X0 and the like about diversity handover, and a reference signal (such as a perch signal). The mobile station measures received quality (such as a received power) of the reference signal. The mobile station makes a decision for each of the plurality of base stations as to whether the service area is to be selected as a candidate of a service area in which the mobile station will start new communication, and/or as a candidate of a service area in which the mobile station will stop current communication.

Abstract: The mobile communications system 10 comprises cellular telephones 12 and 14 and a network device 16. Information such as images, music, text and the like is stored in the storage part 17 of the cellular telephone 12. Requests for information that are transmitted from the cellular telephone 14 are received by the cellular telephone 12 via a network device 16. Furthermore, the information in question is read out from the storage part 17 of the cellular telephone 12 that has received transmission requests for the abovementioned information, and is transmitted to the cellular telephone 14 via the network device 16.

Abstract: In a mobile communication system, radio channel capacity can be secured. A plurality of base stations transmit to a mobile station information X0 and the like about diversity handover, and a reference signal (such as a perch signal). The mobile station measures received quality (such as a received power) of the reference signal. The mobile station makes a decision for each of the plurality of base stations as to whether the service area is to be selected as a candidate of a service area in which the mobile station will start new communication, and/or as a candidate of a service area in which the mobile station will stop current communication.