Patent ID: 9660705
Date: 2017-05-23
CPC Classifications: H04B,H04M,H04W

Claim:
1. An on-board unit comprising: a first antenna and a second antenna; a first service communicating section corresponding to a first service; a second service communicating section corresponding to a second service; a switch configured to switch a connection relation of each of the first antenna and the second antenna with the first service communicating section and the second service communicating section; and a control section configured to control the switch, wherein the first service communicating section is configured to carry out a communication for the first service with a first communication device at a communication speed within a first communication speed range, wherein the second service communicating section is configured to carry out a communication for the second service with a second communication device at a communication speed within a second communication speed range, wherein the first communication speed range is different from the second communication speed range, wherein the on-board unit has first to third operation modes, wherein when the on-board unit is set to the first operation mode, the switch connects both of the first antenna and the second antenna with the first service communicating section, and the first service communicating section carries out the communication for the first service with the first communication device at the communication speed within the first communication speed range, wherein when the on-board unit is set to the first operation mode, and when the first service communicating section detects a reception of a radio signal for the communication for the second service from the second communication device, the on-board unit is switched to the second operation mode, wherein when the on-board unit is set to the second operation mode, the switch connects one of the first antennas and the second antennas with the first service communicating section, and connects the other with the second service communicating section, the first service communicating section carries out the communication for the first service with the first communication device at the communication speed within the first communication speed range, and the second service communicating section carries out the communication for the second service with the second communication device at the communication speed within the second communication speed range, wherein when the on-board unit is set to the second operation mode and when the control section completes disconnection processing to disconnect the communication for the first service, the on-board unit is switched to the third operation mode, wherein when the on-board unit is set to the third operation mode, the switch connects both of the first antenna and the second antenna with the second service communicating section, and the second service communicating section carries out the communication for the second service with the second communication device at the communication speed within the second communication speed range, and wherein an upper limit of the second communication speed range is lower than an upper limit of the first communication speed range.