An application execution unit executes an application, and a communication ID acquisition unit acquires a communication identifier set for the application. When a packet generation unit generates a packet including a communication identifier and data, a transmission unit transmits the packet in an IBSS identified by an SSID stored in a SSID storing unit. When a reception unit receives a packet from another terminal device, a determination unit determines whether the communication identifier acquired by the communication ID acquisition unit matches a communication identifier included in the received packet. When the determination unit determines that the acquired communication identifier matches the communication identifier included in the received packet, a data supply unit provides data included in the received packet to the application.