US 12,291,167 B2
Method for triggering a first device as step for accessing an accessible device
Zeid Abou-Chahine, Lippstadt (DE); and Henning Irle, Lippstadt (DE)
Assigned to Hella GmbH & Co. KGaA, Lippstadt (DE)
Filed by HELLA GmbH & Co. KGaA, Lippstadt (DE)
Filed on Mar. 2, 2023, as Appl. No. 18/116,705.
Application 18/116,705 is a continuation of application No. PCT/EP2021/058945, filed on Apr. 6, 2021.
Claims priority of application No. 10 2020 123 016.8 (DE), filed on Sep. 3, 2020.
Prior Publication US 2023/0202429 A1, Jun. 29, 2023
Int. Cl. B60R 25/24 (2013.01); B60R 25/01 (2013.01)
CPC B60R 25/24 (2013.01) [B60R 25/01 (2013.01); B60R 2325/101 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for triggering a first device, the first device comprising at least one antenna for wireless communication with a second device having at least one antenna, the first device being an accessible device or an access device, the second device being the other one of the accessible device and the access device, and the triggering of the first device being a step required for accessing the accessible device, wherein the method comprises:
receiving at least one pilot signal on the first device via the at least one antenna;
determining whether at least one message contained in the received at least one pilot signal corresponds to at least one expected message being expected by the first device;
extracting channel state information from the received at least one pilot signal;
deriving at least one channel feature from the extracted channel state information;
determining whether at least one derived channel feature corresponds to at least one expected channel feature expected by the first device; and
triggering the first device, if the received at least one message corresponds to the at least one expected message and the at least one derived channel feature corresponds to the at least one expected channel feature, or, otherwise, not triggering the first device,
wherein the first device has two or more antennas and the second device has two or more antennas such that the method is performed based on at least four received pilot signals,
wherein the channel state information is extracted as a channel matrix from the at least four received pilot signals, and
wherein the at least one derived channel feature is a determinant computed from the extracted channel matrix.