Patent ID: 11968021
Assignee: HITACHI ASTEMO, LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wireless communication device, which is mounted on a vehicle and performs wireless communication with a communication target wireless communication device using a plurality of frequency channels, wherein
the plurality of frequency channels includes a first channel and a second channel,
the first channel uses a radio signal of a polarization plane orthogonal to at least a polarization plane of a radio signal in the second channel, and
the wireless communication device includes:
a first transceiver corresponding to the first channel and capable of transmitting and receiving the radio signal with two orthogonal polarization planes; and
a second transceiver corresponding to the second channel and capable of transmitting and receiving the radio signal with two orthogonal polarization planes,
wherein the first transceiver and the second transceiver are capable of selecting a first communication mode in which the radio signal is transmitted and received using both of the two orthogonal polarization planes and a second communication mode in which the radio signal is transmitted and received using one of the two orthogonal polarization planes, and
in the second communication mode, a polarization plane used by the first transceiver and a polarization plane used by the second transceiver are orthogonal to each other; and

wherein the wireless communication device acquires an inter-vehicle distance between the vehicle equipped with the wireless communication device and a second vehicle equipped with the communication target wireless communication device as a first communication target, and switches between the first communication mode and the second communication mode based on the inter-vehicle distance.