Battery management for c-V2X (cellular vehicle-to-everything)

Patent metadata

Field	Value
Publication number	US-12344176-B2
Application number	US-202318476274-A
Country	US
Kind code	B2
Filing date	Sep 27, 2023
Priority date	Sep 27, 2023
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

When a parked automotive vehicle is located at a hazard location, both a Cellular Vehicle-to-Everything (C-V2X) modem of the parked automotive vehicle and a Global Navigation Satellite System (GNSS) engine of the parked automotive vehicle are left on to increase safety, relative to turning the C-V2X modem off, by having the C-V2X modem continue to send C-V2X messages. When the parked automotive vehicle is not located at a hazard location and is located at a known long-parking location, turning off both the GNSS engine and the C-V2X modem to reduce battery-power consumption relative to leaving both the GNSS engine and the C-V2X modem on.

First claim

The invention claimed is:

1. A method performed by a telematics control unit of a parked automotive vehicle, the method comprising:
determining whether an ignition of the parked automotive vehicle is off;
determining whether the parked automotive vehicle is located at a hazard location;
when the parked automotive vehicle is determined to be located at a hazard location, leaving both a Cellular Vehicle-to-Everything (C-V2X) modem of the parked automotive vehicle and a Global Navigation Satellite System (GNSS) engine of the parked automotive vehicle on to increase safety, relative to turning the C-V2X modem off, by having the C-V2X modem continue to send C-V2X messages;
when the parked automotive vehicle is determined to be located at a location that is not a hazard location, determining whether the parked automotive vehicle is located at a known long-parking location; and
when the vehicle is determined to be located at a known long-parking location, turning off both the GNSS engine and the C-V2X modem to reduce battery-power consumption relative to leaving both the GNSS engine and the C-V2X modem on.

2. The method of claim 1 , wherein determining whether the parked automotive vehicle is located at a hazard location further comprises: sending a location of the parked automotive vehicle to a map service.

3. The method of claim 2 , wherein the map service is an Open-Source Routing Machine.

4. The method of claim 1 , wherein, when the parked automotive vehicle is determined to be located other than at a known long-parking location, acquiring an expected parking duration.

5. The method of claim 4 , wherein the expected parking duration is acquired via user input.

6. The method of claim 4 , wherein the expected parking duration is determined based on a historical average-parking duration of the vehicle where the vehicle is parked.

7. The method of claim 4 , wherein, when the acquired parking duration is not less than 20 minutes, turning off both the GNSS engine and the C-V2X modem to reduce battery-power consumption relative to leaving both the GNSS engine and the C-V2X modem on.

8. The method of claim 4 , wherein, when the acquired parking duration is less than 20 minutes, putting both the C-V2X modem and the GNSS engine in standby mode to reduce battery-power consumption relative to leaving both the C-V2X modem and the GNSS engine on.

9. The method of claim 8 , further comprising: setting and activating a timer, and, when the timer expires, turning off both the GNSS engine and the C-V2X modem to reduce battery-power consumption relative to leaving both the C-V2X modem and the GNSS engine in standby mode.

10. An automotive telematics control unit (TCU) comprising:
A TCU application processor that is coupled to a vehicle processor, a Global Navigation Satellite System (GNSS) engine, a plurality of cellular modems, and a Cellular Vehicle-to-Everything (C-V2X) modem, wherein the TCU application processor is configured to:
determine whether an ignition of the parked automotive vehicle is off;
determine whether the parked automotive vehicle is located at a hazard location;
when the parked automotive vehicle is determined to be located at a hazard location, leave both the C-V2X modem of the parked automotive vehicle and the GNSS engine of the parked automotive vehicle on to increase safety, relative to turning the C-V2X modem off, by having the C-V2X modem continue to send C-V2X messages;
when the parked automotive vehicle is determined to be located at a location that is not a hazard location, determine whether the parked automotive vehicle is located at a known long-parking location; and
when the vehicle is determined to be located at a known long-parking location, turn off both the GNSS engine and the C-V2X modem to reduce battery-power consumption relative to leaving both the GNSS engine and the C-V2X modem on.

11. The automotive TCU of claim 10 , wherein determining whether the parked automotive vehicle is located at a hazard location further comprises: sending a location of the parked automotive vehicle to a map service.

12. The automotive TCU of claim 11 , wherein the map service is an Open-Source Routing Machine.

13. The automotive TCU of claim 10 , wherein, when the parked automotive vehicle is determined to be located other than at a known long-parking location, an expected parking duration is acquired.

14. The automotive TCU of claim 13 , wherein the expected parking duration is acquired via user input.

15. The automotive TCU of claim 13 , wherein the expected parking duration is determined based on a historical average-parking duration of the vehicle where the vehicle is parked.

16. The automotive TCU of claim 13 , wherein, when the acquired parking duration is not less than 20 minutes, both the GNSS engine and the C-V2X modem are turned off to reduce battery-power consumption relative to leaving both the GNSS engine and the C-V2X modem on.

17. The automotive TCU of claim 13 , wherein, when the acquired parking duration is less than 20 minutes, both the C-V2X modem and the GNSS engine are put in standby mode to reduce battery-power consumption relative to leaving both the C-V2X modem and the GNSS engine on.

18. The automotive TCU of claim 17 , further comprising: a timer is set and activated, and, when the timer expires, both the GNSS engine and the C-V2X modem are turned off to reduce battery-power consumption relative to leaving both the C-V2X modem and the GNSS engine in standby mode.

Assignees

• Continental automotive systems inc

Inventors

• Zhu Yu
• Oberhauser Tom
• Sistla Janakiram

Classifications

• G01S19/34

  Power consumption · CPC title

• B60R25/403

  Power supply in the vehicle · CPC title

• H04W4/40 Primary

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title

• H04W4/029

  Location-based management or tracking services · CPC title

• H04W52/0229

  where the received signal is a wanted signal · CPC title