NARROW BAND COMMUNICATION ON-VEHICLE DEVICE

摘要

PROBLEM TO BE SOLVED: To give notice of network non-connection only when a communication opposite party of its own on-vehicle device is a road-side device for Internet connection and cannot be connected.SOLUTION: Communication situation determination means 2c determines that communication is in a state in which the Internet cannot be connected when signal information determination means 2a determines that a received signal does not include information destined to its own on-vehicle device and when road-side device determination means 2b determines that a road-side device having transmitted the signal is a road-side device for Internet connection. When the communication situation determination means 2c has determined that communication is in the state in which the Internet cannot be connected, notification control means 2d makes a display unit 4 and a voice output unit 5 give notice of Internet non-connection to a user.