PROTOCOLS FOR REMOTE VEHICLE ACCESS SYSTEMS

A wireless communications system for an automotive vehicle includes a vehicle control unit and a fob. The vehicle control unit includes a vehicle transceiver. The fob includes a fob transceiver and a fob control unit and is configured to transmit and receive communications through at least two chann...

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Bibliographische Detailangaben
Hauptverfasser:	LUO, Yi, HONKANEN, Matthew, R, NANTZ, John
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE CHECKING-DEVICES GENERATING RANDOM NUMBERS PHYSICS REGISTERING OR INDICATING THE WORKING OF MACHINES TIME OR ATTENDANCE REGISTERS VOTING OR LOTTERY APPARATUS
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Beschreibung
Zusammenfassung:	A wireless communications system for an automotive vehicle includes a vehicle control unit and a fob. The vehicle control unit includes a vehicle transceiver. The fob includes a fob transceiver and a fob control unit and is configured to transmit and receive communications through at least two channels. The fob control unit is programmed to transmit a preamble through the first of the at least two channels, transmit a preamble through the second of the at least two channels during a null space following the preamble transmitted through the first channel, transmit a data packet payload through the first channel when a null space following the preamble in the second channel is detected, and transmit a data packet payload through the second channel when a null space following the preamble in the second channel is detected. Communications are interleaved between the first and second channels.