Vehicle communication system

• US 10,158,719 B2
• Filed: 08/02/2017
• Issued: 12/18/2018
• Est. Priority Date: 05/31/2013
• Status: Active Grant

• Current Assignee: Jaguar Land Rover Limited (TATA Motors Limited)
• Original Assignee: Jaguar Land Rover Limited (TATA Motors Limited)
• Inventors: Khan, Mohammed, Siswick, Howard
• Primary Examiner(s): Rachedine, Mohammed
• Application Number:
  US15/667,480
• Publication Number:
  US 20180013834A1
• Time in Patent Office: 503 Days
• Field of Search: None
• CPC Class Codes: G07C 2009/0038 whereby the wake-up circuit is situated in the keyless data carrier
• CPC Class Codes: G07C 2009/0096 Electronic keys comprising a non-biometric sensor
• CPC Class Codes: G07C 2209/63 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 Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/63 Location-dependent; Proximity-dependent
• CPC Class Codes: H04W 4/025 using location based information parameters
• CPC Class Codes: H04W 4/40 for vehicles, e.g. vehicle-to-pedestrians [V2P]
• CPC Class Codes: H04W 52/0212 managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0251 using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A communication system for facilitating control over a function of a vehicle (102) comprises a base station (104) positioned in the vehicle (102) and a mobile communication unit (122). The base station (104) comprises a first transmitter for transmitting a signal to the mobile communication unit (122) and a first receiver for receiving a signal from the mobile communication unit (122). The base station (104) is further configured to cause the mobile communication unit (122) to operate in accordance with a limited-response duty cycle.

Claims

1. A communication system for facilitating control over a function of a vehicle, the communication system comprising:

a base station positioned in the vehicle; and

a mobile communication unit;

the base station comprising a first transmitter for transmitting a signal to the mobile communication unit and a first receiver for receiving a signal from the mobile communication unit;

the base station being further configured to cause the mobile communication unit to operate in accordance with a limited-response duty cycle, and to cause the mobile communication unit to resume operating in accordance with a high-response duty cycle in response to an occurrence of a predetermined trigger event, wherein the predetermined trigger event comprises a user initiated interaction with the vehicle,

wherein the limited-response duty cycle comprises a period of inactivity, during which the mobile communication unit is unable to receive a transmission from the base station, and a period of activity, during which the mobile communication unit is capable of receiving a transmission from the base station, and

wherein the high-response duty cycle comprises a period of activity, during which the mobile communication unit is capable of receiving a transmission from the base station.

2. A communication system as claimed in claim 1, wherein the base station is configured for determining a location of the mobile communication unit relative to the vehicle.

3. A communication system as claimed in claim 1, wherein the base station is configured to:

cause the mobile communication unit to operate in accordance with the limited-response duty cycle in response to a determination that the mobile communication unit is located within the vehicle; and

/or

cause the mobile communication unit to operate in accordance with the limited-response duty cycle in response to a determination that the mobile communication unit is substantially stationary relative to the vehicle.

4. A communication system as claimed in claim 1, wherein the predetermined trigger event is based at least in part upon:

an opening of a door of the vehicle, a closing of a door of the vehicle, and/or a request to start an engine of the vehicle.

5. A communication system as claimed in claim 1, wherein the period of inactivity of the limited-response duty cycle is longer in time than a period of activity.

6. A communication system as claimed in claim 1, wherein the period of activity of the limited-response duty cycle occurs without substantial interruption by a period of inactivity.

7. A communication system as claimed in claim 1, wherein the base station is configured for determining a location of the mobile communication unit relative to the vehicle based on a time of flight of communications between the mobile communication unit and one or more transceivers positioned in the vehicle.

8. A communication system as claimed in claim 7, wherein the base station is configured for determining a location of the mobile communication unit relative to the vehicle based on a time of flight of communications between the mobile communication unit and three or more transceivers positioned in the vehicle.

9. A communication system as claimed in claim 8, wherein the base station is configured for determining a location of the mobile communication unit relative to the vehicle based on a time of flight of communications between the mobile communication unit and four or more transceivers positioned in the vehicle.

10. A communication system as claimed in claim 7 wherein the base station is configured for determining a location of the mobile communication unit relative to the vehicle based on a time of flight of ultra-wide band communications between the mobile communication unit and the at least one transceiver positioned in the vehicle.

11. A communication system as claimed in claim 1, the mobile communication unit comprising a motion sensor configured to detect movements of the mobile communication unit and to communicate said movements to the base station.

12. A communication system as claimed in claim 11, wherein a determination that the mobile communication unit is substantially stationary relative to the vehicle is made in dependence on the detected movements communicated from the mobile communication unit to the base station.

19. A vehicle having a communication system as claimed in claim 1.

13. A method of facilitating control over a function of a vehicle, the method comprising:

providing a base station positioned in the vehicle and a mobile communication unit, the base station comprising a first transmitter and a first receiver;

transmitting a signal from the first transmitter to the mobile communication unit;

receiving a signal from the mobile communication unit;

causing the mobile communication unit to operate in accordance with a limited-response duty cycle; and

causing the mobile communication unit to resume operating in accordance with a high-response duty cycle in response to an occurrence of a predetermined trigger event, wherein the predetermined trigger event comprises a user initiated interaction with the vehicle,

wherein the limited-response duty cycle comprises a period of inactivity, during which the mobile communication unit is unable to receive a transmission, and a period of activity, during which the mobile communication unit is capable of receiving a transmission, and

wherein the high-response duty cycle comprises a period of activity, during which the mobile communication unit is capable of receiving a transmission.

14. A method of facilitating control over a function of a vehicle as claimed in claim 13, further comprising determining a location of the mobile communication unit relative to the vehicle.

15. A method of facilitating control over a function of a vehicle as claimed in claim 14, further comprising:

causing the mobile communication unit to operate in accordance with the limited-response duty cycle in response to a determination that the mobile communication unit is located within the vehicle; and

/or

causing the mobile communication unit to operate in accordance with the limited response duty cycle in response to a determination that the mobile communication unit is substantially stationary relative to the vehicle.

16. A method of facilitating control over a function of a vehicle as claimed in claim 13, further comprising determining a location of the mobile communication unit relative to the vehicle based on a time of flight of communications between the mobile communication unit and one or more transceivers positioned in the vehicle.

17. A method of facilitating control over a function of a vehicle as claimed in claim 13, further comprising determining a location of the mobile communication unit relative to the vehicle based on a time of flight of communications between the mobile communication unit and three or more transceivers positioned in the vehicle.

18. A method of facilitating control over a function of a vehicle as claimed in claim 13, further comprising determining a location of the mobile communication unit relative to the vehicle based on a time of flight of communications between the mobile communication unit and four or more transceivers positioned in the vehicle.

20. A vehicle adapted to perform a method as claimed in claim 13.