Wireless communications system, base station, mobile station, and processing method

A base station configured to communicate with a first wireless communications apparatus via a first wireless communication or a second wireless communication different from the first wireless communication, the base station comprising:

• a receiver configured to receive from the first wireless communications apparatus a control message that includes an available address of the first wireless communications apparatus in the second wireless communication, and
• a transmitter configured to notify a second wireless communications apparatus of the address acquired from the control message, wherein,
• in a case of transmitting data from the base station to the first wireless communications apparatus by a secondwireless communications apparatus via the second wireless communication, the transmitter transfers the data to the second wireless communications apparatus through an adaptation sublayer that includes a process of adding a header to the data, wherein before the process of the adaptation sublayer, the data is processed in a convergence layer that includes a process of routing the data between the first wireless communication and the second wireless communication.

A mobile station configured to communicate with a first wireless communications apparatus via a first wireless communication or a second wireless communication different from the first wireless communication, the mobile station comprising:

• a transmitter configured to transmit to the first wireless communication apparatus a control message that includes an available address of the mobile station in the second wireless communication,
• a receiver configured to receive from a second wireless communications apparatus a data that being addressed to a destination address that is the address acquired from the control message and being notified to the second wireless communications apparatus by the first wireless communications apparatus,
• wherein, the data is transferred to the second wireless communications apparatus by the first wireless communications apparatus through an adaptation sublayer that includes a process of adding a header to the data, wherein before the process of the adaptation sublayer, and the data is processed in a convergence layer that includes a process of routing the data between the first wireless communication and the second wireless communication.