Dynamically enabled vehicle-to-everything (V2X) pedestrian mode for mobile devices

Patent metadata

Field	Value
Publication number	US-11764898-B2
Application number	US-202117395172-A
Country	US
Kind code	B2
Filing date	Aug 5, 2021
Priority date	Aug 5, 2021
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A method of wireless communication by a device includes detecting whether the device is in an outdoor environment in response to a start of a reevaluation timer. The method also determines a mobility level of the device in response to the start of the reevaluation timer. The method further includes enabling a vehicle-to-everything (V 2 X) pedestrian mode in response to the device being in the outdoor environment and/or the mobility level exceeding a threshold value.

First claim

What is claimed is:

1. A method of wireless communication by a device, comprising:
detecting whether the device is in an outdoor environment in response to a start of a reevaluation timer;
determining a mobility level of the device in response to the start of the reevaluation timer; and
enabling a vehicle-to-everything (V2X) pedestrian mode in response to the device being detected to be in the outdoor environment and the mobility level exceeding a threshold value.

2. The method of claim 1 , further comprising enabling the V2X pedestrian mode in response to detecting an emergency condition.

3. The method of claim 1 , further comprising adjusting a duration of the reevaluation timer based on whether the device is in the outdoor environment and/or whether the mobility level exceeds the threshold value.

4. The method of claim 3 , further comprising adjusting the duration of the reevaluation timer based on a length of time since receiving a V2X message.

5. The method of claim 3 , further comprising adjusting the duration of the reevaluation timer based on a level of ambient noise sensed by the device.

6. The method of claim 1 , further comprising scanning for V2X messages on a subset of allocated time and/or frequency resources, the subset determined based on a length of time since receiving a V2X message.

7. The method of claim 1 , further comprising scanning for V2X messages on a subset of allocated time and/or frequency resources, the subset determined based on a level of ambient noise sensed by the device.

8. The method of claim 1 , in which the device comprises a user equipment (UE).

9. The method of claim 1 , further comprising disabling the vehicle-to-everything (V2X) pedestrian mode in response to the device not being in the outdoor environment when the reevaluation timer expires.

10. The method of claim 1 , further comprising disabling the vehicle-to-everything (V2X) pedestrian mode in response to the mobility level being less than the threshold value when the reevaluation timer expires.

11. An apparatus for wireless communication by a device, comprising: a memory; and at least one processor coupled to the memory, the at least one processor configured:
to detect whether the device is in an outdoor environment in response to a start of a reevaluation timer;
to determine a mobility level of the device in response to the start of the reevaluation timer; and
to enable a vehicle-to-everything (V2X) pedestrian mode in response to the device being detected to be in the outdoor environment and the mobility level exceeding a threshold value.

12. The apparatus of claim 11 , in which the at least one processor is further configured to enable the V2X pedestrian mode in response to detecting an emergency condition.

13. The apparatus of claim 11 , in which the at least one processor is further configured to adjust a duration of the reevaluation timer based on whether the device is in the outdoor environment and/or whether the mobility level exceeds the threshold value.

14. The apparatus of claim 13 , in which the at least one processor is further configured to adjust the duration of the reevaluation timer based on a length of time since receiving a V2X message.

15. The apparatus of claim 13 , in which the at least one processor is further configured to adjust the duration of the reevaluation timer based on a level of ambient noise sensed by the device.

16. The apparatus of claim 11 , in which the at least one processor is further configured to scan for V2X messages on a subset of allocated time and/or frequency resources, the subset determined based on a length of time since receiving a V2X message.

17. The apparatus of claim 11 , in which the at least one processor is further configured to scan for V2X messages on a subset of allocated time and/or frequency resources, the subset determined based on a level of ambient noise sensed by the device.

18. The apparatus of claim 11 , in which the device comprises a user equipment (UE).

19. The apparatus of claim 11 , in which the at least one processor is further configured to disable the vehicle-to-everything (V2X) pedestrian mode in response to the device not being in the outdoor environment when the reevaluation timer expires.

20. The apparatus of claim 11 , in which the at least one processor is further configured to disable the vehicle-to-everything (V2X) pedestrian mode in response to the mobility level being less than the threshold value when the reevaluation timer expires.

21. An apparatus for wireless communication by a device, comprising:
means for detecting whether the device is in an outdoor environment in response to a start of a reevaluation timer;
means for determining a mobility level of the device in response to the start of the reevaluation timer; and
means for enabling a vehicle-to-everything (V2X) pedestrian mode in response to the device being detected to be in the outdoor environment and the mobility level exceeding a threshold value.

22. The apparatus of claim 21 , further comprising means for enabling the V2X pedestrian mode in response to detecting an emergency condition.

23. The apparatus of claim 21 , further comprising means for adjusting a duration of the reevaluation timer based on whether the device is in the outdoor environment and/or whether the mobility level exceeds the threshold value.

24. The apparatus of claim 23 , further comprising means for adjusting the duration of the reevaluation timer based on a length of time since receiving a V2X message.

25. The apparatus of claim 23 , further comprising means for adjusting the duration of the reevaluation timer based on a level of ambient noise sensed by the device.

26. The apparatus of claim 21 , further comprising means for scanning for V2X messages on a subset of allocated time and/or frequency resources, the subset determined based on a length of time since receiving a V2X message.

27. The apparatus of claim 21 , further comprising means for scanning for V2X messages on a subset of allocated time and/or frequency resources, the subset determined based on a level of ambient noise sensed by the device.

28. The apparatus of claim 21 , in which the device comprises a user equipment (UE).

29. The apparatus of claim 21 , further comprising means for disabling the vehicle-to-everything (V2X) pedestrian mode in response to the device not being in the outdoor environment when the reevaluation timer expires.

30. The apparatus of claim 21 , further comprising means for disabling the vehicle-to-everything (V2X) pedestrian mode in response to the mobility level being less than the threshold value when reevaluation timer expires.

Assignees

• Qualcomm Inc

Inventors

• Bathija Jayesh
• Gholmieh Ralph Akram
• Saxena Sandeep
• Tani Taoufik
• Santhanam Arvind Vardarajan

Classifications

• H04W4/027 Primary

  using movement velocity, acceleration information · CPC title

• H04L1/0025 Primary

  Transmission of mode-switching indication · CPC title

• H04W4/029

  Location-based management or tracking services · CPC title

• H04W4/40

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

• H04W4/90

  Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS] · CPC title