Method and arrangement for determining an occupied region of a radio device, and vehicle having such an arrangement

US11493593B2 · kind B2 · utility

Assignee

• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Daniel Knobloch · Munich, DE
• Alexander Krebs · Munich, DE

Key dates

• Filing date: Apr 17, 2019
• Grant date: Nov 8, 2022
• Expiry date: Jul 25, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C2209/63
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for determining an occupied region of a first radio device is provided. According to the method, a signal is transmitted from the first radio device and received by at least two additional radio devices. Based on a propagation time of the signal from the first radio device to the additional radio devices, a surrounding region is determined around each of the additional radio devices in which the first radio device is located. The occupied region of the first radio device is determined based on an overlapping region which results from an overlapping of all surrounding regions. Alternatively, signals can also be transmitted from the additional radio devices and received by the first radio device. The method can be used to determine whether an automobile key having a radio transmitter is located in a vehicle.