Adaptive BLE and UWB based connection rate control for mobile access devices of vehicular passive access systems

A mobile access device comprising:

• one or more transceivers configured to transmit and receive ultra-wideband signals, wherein the ultra-wideband signals include a first challenge signal, and wherein the one or more transceivers comprise
• a first transceiver configured to operate according to a first communication standard, and
• a second transceiver configured to operate according to a second communication standard;
• and
• a control module is configured to
• transmit via the first transceiver an advertisement signal to a vehicle and in response receive at least one of a connect signal or authentication signal from the vehicle to establish a connection,
• when the connection is established, transmit via the second transceiver the first challenge signal to the vehicle;
• transmit via the one or more transceivers the first challenge signal to the vehicle, wherein the first challenge signal is associated with a passive entry or a passive start operation of the vehicle,
• based on the first challenge signal, receive a response signal from the vehicle via the one or more transceivers,
• determine a distance between the mobile access device and the vehicle based on the response signal,
• determine a wait period based on the distance,
• wait a minimum period, wherein 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 via the one or more transceivers to the vehicle to update the distance between the mobile access device and the vehicle.

An access system for a vehicle, the access system comprising:

• one or more transceivers configured to transmit and receive ultra-wideband signals, wherein the ultra-wideband signals include a first challenge signal, and wherein the one or more transceivers comprise
• a first transceiver configured to operate according to a first communication standard, and
• a second transceiver configured to operate according to a second communication standard;
• and
• a control module configured to
• receive via the first transceiver an advertisement signal transmitted from a mobile access device and in response transmitting at least one of a connect signal or authentication signal to establish a connection with the mobile access device, and
• when the connection is established, receive via the second transceiver the first challenge signal from the mobile access device to the vehicle,
• based on the first challenge signal, determine a distance between the mobile access device and the vehicle,
• transmit a response signal from the vehicle via the one or more transceivers, wherein the response signal indicates the distance,
• passively maintain the vehicle in a locked state while the distance is greater than a predetermined distance, and
• passively unlock the vehicle when the distance is less than the predetermined distance and passively maintain the vehicle in an unlocked state while the distance is less than the predetermined distance.