Vehicle communication device
View Patent ↗A communication system performs emergency communication for a vehicle in accordance with a communication scheme in which multiple antennas are used for receiving on the vehicle side data that is wirelessly transmitted through multiple channels of a same frequency band from a base station to the vehicle and one antenna on the vehicle is used for wireless data transmission from the vehicle to the base station. The vehicle is provided a first transmitting and receiving antenna that performs transmission and reception at normal times, and a second transmitting and receiving antenna that performs reception at normal times. The first transmitting and receiving antenna is disposed at the rear of the roof on the vehicle exterior, and the second transmitting and receiving antenna is disposed in the front position in the vehicle interior.
1. A vehicle communication device that uses a communication scheme in which multiple antennas are used for receiving on the vehicle side data that is wirelessly transmitted through multiple channels of an identical frequency band from a base station to the vehicle and one antenna on the vehicle is used for wirelessly transmitting data from the vehicle to the base station, the vehicle communication device comprising:
a first transmitting and receiving antenna that is disposed in a rear position of a roof on an exterior of a vehicle, and is used for reception and transmission in the communication scheme in a normal state;
a second transmitting and receiving antenna that is disposed in a front position in an interior of the vehicle for the communication scheme and used for reception in the communication scheme in a normal state; and
a controller that performs execution control of transmission of emergency data using the second transmitting and receiving antenna in a case where an emergency state is detected, based on information other than the state of the first transmitting and receiving antenna, and the first transmitting and receiving antenna is determined to be incapable of transmission.
2. The vehicle communication device according to claim 1 , wherein the first transmitting and receiving antenna is disposed in a position at a rear on the roof and approximately in a middle in a vehicle width direction.
3. The vehicle communication device according to claim 2 , wherein the second transmitting and receiving antenna is disposed in a space within a dashboard in the front position in the vehicle interior.
4. The vehicle communication device according to claim 3 , wherein the controller detects a collision of the vehicle as the emergency state.
5. The vehicle communication device according to claim 2 , wherein the controller detects a collision of the vehicle as the emergency state.
6. The vehicle communication device according to claim 1 , wherein the second transmitting and receiving antenna is disposed in a space within a dashboard in the front position in the vehicle interior.
7. The vehicle communication device according to claim 6 , wherein the controller detects a collision of the vehicle as the emergency state.
8. The vehicle communication device according to claim 6 , wherein the controller is disposed in a space within a dashboard in the front position in the vehicle interior and is coupled with the second transmitting and receiving antenna.
9. The vehicle communication device according to claim 1 , wherein the controller detects a collision of the vehicle as the emergency state.
10. The vehicle communication device according to claim 1 , wherein the controller is disposed in the front position in the interior of the vehicle and is coupled with the second transmitting and receiving antenna.