Passive entry/passive start systems and methods

Patent metadata

Field	Value
Publication number	US-12384329-B2
Application number	US-202418674831-A
Country	US
Kind code	B2
Filing date	May 25, 2024
Priority date	Oct 12, 2016
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

A sensor is configured to receive connection information from a portable device via a communication gateway and communicate with a portable device using impulse radio (IR) ultra-wide band (UWB) communication based on the connection information. A location of the portable device is determined based on ranging using IR UWB communication.

First claim

What is claimed is:

1. A sensor configured to:
receive connection information from a portable device via a communication gateway; and
communicate with a portable device using impulse radio (IR) ultra-wide band (UWB) communication based on the connection information;
wherein a location of the portable device is determined based on ranging using IR UWB communication.

2. The sensor of claim 1 , wherein the sensor is further configured to communicate signal information with the portable device, the signal information including at least one of a time of arrival and a time difference of arrival.

3. The sensor of claim 1 , wherein the ranging is two-way ranging.

4. The sensor of claim 1 , wherein the communication gateway is configured to establish a Bluetooth Low Energy communication connection with the portable device.

5. The sensor of claim 1 , wherein the ranging using IR UWB communication relates to at least one of a time of arrival, a time of flight, and/or a time difference of arrival.

6. The sensor of claim 1 , wherein the sensor is one of a plurality of sensors and wherein ranging using IR UWB communication between the portable device and the plurality of sensors is performed between communication connection events of a Bluetooth Low Energy communication connection established between the communication gateway and the portable device.

7. The sensor of claim 6 , wherein all of the ranging using IR UWB communication between the portable device and the plurality of sensors is performed between communication connection events of the Bluetooth Low Energy communication connection.

8. A method comprising:
receiving, with a sensor, connection information from a portable device via a communication gateway; and
communicating, with the sensor, with a portable device using impulse radio (IR) ultra-wide band (UWB) communication based on the connection information;
wherein a location of the portable device is determined based on ranging using IR UWB communication.

9. The method of claim 8 , further comprising communicating, with the sensor, signal information with the portable device, the signal information including at least one of a time of arrival and a time difference of arrival.

10. The method of claim 8 , wherein the ranging is two-way ranging.

11. The method of claim 8 , wherein the communication gateway is configured to establish a Bluetooth Low Energy communication connection with the portable device.

12. The method of claim 8 , wherein the ranging using IR UWB communication relates to at least one of a time of arrival, a time of flight, and/or a time difference of arrival.

13. The method of claim 8 , wherein the sensor is one of a plurality of sensors, the method further comprising:
performing ranging using IR UWB communication between the portable device and the plurality of sensors between communication connection events of a Bluetooth Low Energy communication connection established between the communication gateway and the portable device.

14. The method of claim 13 , wherein all of the ranging using IR UWB communication between the portable device and the plurality of sensors is performed between communication connection events of the Bluetooth Low Energy communication connection.

Assignees

• Denso Int America Inc
• Denso Corp

Inventors

• Golsch Kyle
• Sute Steven

Classifications

• H04W4/30

  Services specially adapted for particular environments, situations or purposes · CPC title

• H04W48/04

  based on user or terminal location or mobility data, e.g. moving direction, speed · CPC title

• G07C2009/00547

  starting ignition · CPC title

• B60R25/245

  where the antenna reception area plays a role · CPC title

• G07C2209/63

  Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle · CPC title