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

Claim 6:
7. A communication control method being a method for controlling wireless communication, performed using a plurality of frequency channels between a first wireless communication device and a second wireless communication device each mounted on different vehicles, 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 communication control method includes:
measuring reception power of a radio signal received from the second wireless communication device by the first wireless communication device and an inter-vehicle distance between a vehicle equipped with the first wireless communication device and the vehicle equipped with the second wireless communication device;
transmitting a radio signal including information for switching between polarization planes of radio signals in the first channel and the second channel based on a reception power and the inter-vehicle distance, from the first wireless communication device to the second wireless communication device; and
switching between the polarization planes of radio signals in the first channel and the second channel based on the radio signal received from the first wireless communication device by the second wireless communication device.