WIRELESS COMMUNICATION SYSTEM, MOBILE STATION, BASE STATION, AND WIRELESS COMMUNICATION METHOD

摘要

This wireless communication system (1) is provided with a mobile terminal (10), a 3G base station (30) which uses the 3G system to communicate with the mobile terminal (10), and an LTE base station (20) which uses the LTE system to communicate with the mobile terminal (10). The mobile terminal (10) has a communication control unit (12) and a 3G communication unit (15). The communication control unit (12) determines whether or not it is possible to use the LTE system to communicate with the LTE base station (20). If the communication control unit (12) determines that said communication is not possible, then the 3G communication unit (15), when transmitting a communication request to the 3G base station (30), notifies the 3G base station (30) that it is not possible to communicate with the LTE base station (20). In response to the aforementioned communication request, the 3G base station uses the 3G system to communicate with the mobile station (10) without requesting that the mobile station (10) communicate with the LTE base station (20).