Title:
WIRELESS COMMUNICATION SYSTEM FOR VEHICLES
Document Type and Number:
WIPO Patent Application WO/2019/220773
Kind Code:
A1
Abstract:
A wireless communication system for vehicles, the system being provided with a vehicle-side device (1) and a portable terminal (2), and the vehicle-side device and the portable terminal carrying out wireless communication. The portable terminal is provided with a portable-side communication unit (22) capable of carrying out wireless communication using an antenna having a linear polarization characteristic, an orientation specification unit (G1) for specifying the orientation of the portable terminal on the basis of a detection result from an orientation sensor, and a polarization-related information transmission unit (G3) for transmitting polarization-related information that indicates the angle of polarization plane, relative to a prescribed reference plane, of the portable-side communication unit, the angle of the polarization plane being determined on the basis of the orientation of the portable terminal. The vehicle-side device is a communication module for carrying out wireless communication, the vehicle-side device being implemented using an antenna having a linear polarization characteristic, and being provided with: a vehicle-side communication unit (12) capable of changing the angle of the polarization plane; and a polarization plane control unit (F2) for adjusting, when polarization-related information is received, the angle of the polarization plane of the vehicle-side communication unit on the basis of the polarization-related information so that the consistency of the polarization planes of the vehicle-side communication unit and the portable terminal increases.
Inventors:
OSAI HIDENORI (JP)
SANJI KENICHIRO (JP)
YAMANE TOMONORI (JP)
SANJI KENICHIRO (JP)
YAMANE TOMONORI (JP)
Application Number:
PCT/JP2019/011943
Publication Date:
November 21, 2019
Filing Date:
March 21, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H04B7/10; H01Q3/04; H01Q3/24; H04B1/3822; H04M1/00
Domestic Patent References:
| WO2001052445A1 | 2001-07-19 |
Foreign References:
| JP2006025223A | 2006-01-26 | |||
| JP2012199727A | 2012-10-18 | |||
| JP2017040552A | 2017-02-23 | |||
| JP2015214316A | 2015-12-03 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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