ADAPTIVE BLE AND UWB BASED CONNECTION RATE CONTROL FOR MOBILE ACCESS DEVICES OF VEHICULAR PASSIVE ACCESS SYSTEMS

Title:

ADAPTIVE BLE AND UWB BASED CONNECTION RATE CONTROL FOR MOBILE ACCESS DEVICES OF VEHICULAR PASSIVE ACCESS SYSTEMS

Document Type and Number:

WIPO Patent Application WO/2021/261365

Kind Code:

A1

Abstract:

A mobile access device (400) includes a transceiver (408) and a control module (402). The transceiver (400) transmits and receives ultra-wideband signals including a first challenge signal. The control module (402): transmits via the transceiver (400) the first challenge signal to a vehicle (200), where the first challenge signal is associated with a passive entry or a passive start operation of the vehicle (200), based on the first challenge signal, receive a response signal from the vehicle (200), determine a distance between the mobile access device (400) and the vehicle (200) based on the response signal, determine a wait period based on the distance, wait a minimum period, where the minimum period is a minimum of (i) the wait period and (ii) an advertisement period or a predetermined ranging period, and subsequent to waiting the minimum period, transmit a second challenge signal to the vehicle (200) to update the distance between the mobile access device (400) and the vehicle (200).

Inventors:

AHMED OSMAN (US)
TOKUNAGA YUKI (JP)

Application Number:

PCT/JP2021/022988

Publication Date:

December 30, 2021

Filing Date:

June 17, 2021

Export Citation:

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Assignee:

DENSO CORP (JP)

International Classes:

E05B49/00; B60R25/24

Foreign References:

US20140285319A1	2014-09-25
JP2005113417A	2005-04-28
US20190263356A1	2019-08-29