In a wireless communication system, an approach determination section determines whether a portable device is inside of a nearby area of one of a plurality of transmitting antennas transmitting a primary signal. When the approach determination section determines that the portable device is inside of the nearby area, a transmission control section changes a driving voltage of another one of the transmitting antennas disposed outside of the nearby area, such that a communication area of the another one of the transmitting antennas is increased to encompass the nearby area of the one of the transmitting antennas, and the primary signal is retransmitted from the another one of the transmitting antennas.
Wireless communication system between a vehicle and a portable device
22.03.2016
Patent
Elektronische Ressource
Englisch
IPC: | G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze |
VEHICLE-MOUNTED DEVICE, PORTABLE DEVICE, AND VEHICLE WIRELESS COMMUNICATION SYSTEM
Europäisches Patentamt | 2018
|VEHICLE-MOUNTED DEVICE, PORTABLE DEVICE, AND VEHICLE WIRELESS COMMUNICATION SYSTEM
Europäisches Patentamt | 2017
|Vehicle wireless communication system, vehicle control device, and portable machine
Europäisches Patentamt | 2017
|Vehicle wireless communication system, vehicle control device, and portable machine
Europäisches Patentamt | 2017
|ON-VEHICLE DEVICE, PORTABLE MACHINE, AND VEHICLE WIRELESS COMMUNICATION SYSTEM
Europäisches Patentamt | 2017
|