Patent ID: 8219131
Filing Date: 2012-07-10
Classification: H04W

Abstract:
1. A radio communication system, comprising: a base station implementing a plurality of radio systems, and a plurality of terminals for communicating with the base station using the plurality of radio systems, each of the terminals comprising a plurality of transmitters, a plurality of receivers, and a controller for controlling the transmitters and the receivers, each transmitter and each receiver of each of the terminals corresponding to a radio system of the plurality of radio systems, wherein the base station decides a priority of radio systems of the plurality of radio systems that each of the terminals will use to communicate thereafter and transmits paging signals of one of the plurality of radio systems which include priority information indicating the decided priority of radio systems of the plurality of radio systems that each of the terminals will use to each of the terminals, the controller of each terminal decides the radio systems to use for communication based on the priority information included in the paging signals transmitted from the base station, obtained information on the radio systems available for the terminal to use, and information on a radio system that the terminal requests to use, and the controller of each terminal sets the receiver of the terminal that corresponds to the radio system decided to be used for communication in an active state when the radio system decided to be used for communication is different from the radio system used by the terminal for receiving the paging signals and the terminal is set to the sleep state for the radio system decided to be used for communication.