Communication system, base station, mobile station, and communication method

A mobile station that supports a first wireless communication scheme and, said mobile station comprising:

• a controller configured to, in a waiting state, preferentially select a first base station that supports the first wireless communication scheme over a second base station that supports the second wireless communication scheme for a location registration, wherein the second wireless communication scheme has a larger power consumption than the first wireless communication scheme;
• and
• a receiver configured to receive a notification signal including communication information regarding the second wireless communication scheme having a faster communication speed and larger power consumption during wireless communication than the first wireless communication scheme from the first base station,
• wherein the receiver receives the notification signal by the first wireless communication scheme, and
• wherein the controller is configured to select whether to maintain data communication by the first base station or to switch the first wireless communication scheme to the second wireless communication scheme, based on the communication information included in the notification signal and an amount of communication data processed by the mobile station.

A communication method of performing communication using:

• a first base station that supports a first wireless communication scheme,
• a second base station that supports a second wireless communication scheme having faster communication speed and larger power consumption during wireless communication than the first wireless communication scheme, and
• a mobile station that supports the first and the second wireless communication schemes,
• the communication method comprising:
• causing the mobile station to, in a waiting state, preferentially select the first base station over the second base station for a location registration;
• causing the first base station to acquire communication information on a communication state of the second base station;
• causing the first base station to transmit, by the first wireless communication scheme, a notification signal including the communication information;
• causing the mobile station to receive the notification signal transmitted by the first base station;
• and
• causing the mobile station to select whether to maintain data communication by the first base station or to switch the first wireless communication scheme to the second wireless communication scheme, based on the communication information included in the notification signal and an amount of communication data processed by the mobile station.