| 摘要 |
This mobile communication system directly communicates user data between a plurality of wireless terminals without going through a wireless base station. The communication of user data, which is directly carried out between the plurality of wireless terminals, is performed using some of the wireless resources allocated to the mobile communication system. The plurality of wireless terminals includes a transmitting terminal that transmits the user data, and a receiving terminal that receives the user data. The receiving terminal is provided with a receiving-side transmitting unit that transmits a delivery confirmation signal indicating whether or not the user data transmitted from the transmitting terminal was received. The receiving-side transmitting unit transmits the delivery confirmation signal to the wireless base station. |
