Method and control device for operating a transmitter of a radio key system of a motor vehicle and motor vehicle with such a transmitter

US12017610B2 · kind B2 · utility

Assignees

• Continental Automotive Technologies GmbH · DE
• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Thomas Reisinger · Regenstauf, DE
• Alexander Krebs · Munich, DE

Key dates

• Filing date: May 7, 2019
• Grant date: Jun 25, 2024
• Expiry date: Jun 4, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G08C17/00
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method for operating a transmitter unit of a radio key system of a motor vehicle, wherein a control device of the transmitter unit provides that, for a respective closing operation in at least one measurement cycle, in each case in response to a polling message, in a plurality of successive time slots, in each case one of a plurality of anchor transmitters of the transmitter unit transmits an anchor message, and the measurement cycle is ended by reception of a final message, which signals reception times of the anchor messages measured by a radio key system. A transmission sequence of the anchor transmitters may be determined by means of an assignment rule in which an assignment of the anchor transmitters to the time slots is carried out, wherein the assignment rule provides that the assignment takes place variably over time.