Vehicle-to-vehicle communication device, vehicle-to-vehicle communication system and vehicle-to-vehicle communication method
US10880709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2019 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Aug 21, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention efficiently realizes time division multiplexed channel access in a mixture of a vehicle-to-vehicle communication device using an approximate frequency band and a direct mobile communication terminal. The vehicle-to-vehicle communication device includes a mobile communication unit, a threshold storage unit that stores a threshold value as to whether or not a predetermined control channel for vehicle-to-vehicle communication is an idle channel, a level detector that outputs a predetermined detection signal when a radio wave intensity of the predetermined control channel is larger than the threshold value, and a timer unit that transmits a signal to the level detector when the time counting for a predetermined time expires. The mobile communication unit transmits the radio wave of the direct communication of the mobile communication when the level detector receives the signal and the radio wave strength of the predetermined control channel does not exceed the threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.