Ranging Priority Indication

• US 20200137518A1
• Filed: 12/31/2019
• Published: 04/30/2020
• Est. Priority Date: 07/06/2018
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Burugupalli, Srinivas, Wang, Qi, Shani, Oren, Hartman, Christiaan A., Li, Danlin, Diwan, Aniruddha S.
• Granted Patent: US 10,966,053 B2
• Time in Patent Office: Days
• CPC Class Codes: G01S 13/765 with exchange of information between interrogator and responder
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds

Abstract

This disclosure relates to techniques for performing ranging wireless communication including prioritization. A first wireless device may transmit a request for ranging services to a second wireless device. The first wireless device may transmit an indication of a ranging priority to the second wireless device. The second wireless device may determine a granted ranging priority. The first and second wireless device may perform ranging communication according to the granted ranging priority.

Claims

1. A first wireless device, comprising:

a radio; and

a processor operably coupled to the radio;

wherein the processor is configured to cause the first wireless device to;

determine a priority for a spatial measurement with respect to a second wireless device, wherein the spatial measurement is one of;

a ranging measurement of a distance to the second wireless device;

or

an angle measurement of a direction to the second wireless device; and

transmit an indication of the priority to the second wireless device.

2. The first wireless device of claim 1, wherein the indication of the priority specifies a requested time for completion of the spatial measurement.

3. The first wireless device of claim 1, wherein the indication of the priority specifies a level of priority of the spatial measurement.

4. The first wireless device of claim 1, wherein the indication of the priority is transmitted in a two bit field of a frame associated with a wireless local area network.

6. The first wireless device of claim 1, wherein the processor is further configured to cause the first wireless device to receive a response to the indication of the priority, wherein the response indicates one of:

the spatial measurement will be performed at the priority;

or

the spatial measurement will not be performed at the priority.

5. The first wireless device of claim 5, wherein a value of the two bit field indicates that the spatial measurement is associated with emergency services.

7. An apparatus, comprising:

a processor, configured to cause a first wireless device to;

determine a ranging priority for measuring a distance between the first wireless device and second wireless device;

transmit a ranging measurement request and an indication of the ranging priority; and

perform a ranging measurement with the second wireless device.

8. The apparatus of claim 7, wherein the processor is further configured to cause the first wireless device to:

receive a ranging priority response from the second wireless device, wherein the ranging priority response indicates whether the ranging priority will be provided by the second wireless device.

9. The apparatus of claim 8, wherein the processor is further configured to cause the first wireless device to:

in response to the ranging priority response, terminate the ranging measurement request.

10. The apparatus of claim 7, wherein the ranging priority is determined based at least in part on one or more applications executing on the first wireless device.

11. The apparatus of claim 10, wherein determining the ranging priority is further based at least in part on the status of at least one of the one or more applications executing on the first wireless device.

12. The apparatus of claim 7, wherein the ranging priority is determined based at least in part on a battery level of the first wireless device.

13. The apparatus of claim 7, wherein indication of the ranging priority is a two bit field.

14. The apparatus of claim 13, wherein the two bit field is part of a ranging parameters element of an initial fine timing measurement request frame.

15. A second wireless device comprising:

a radio; and

a processor operably coupled to the radio and configured to cause the second wireless device to;

receive a spatial measurement request from a first wireless device;

receive an indication of a requested spatial measurement priority from the first wireless device; and

perform a spatial measurement with the first wireless device based at least in part on the requested spatial measurement priority, wherein the spatial measurement is one of;

a ranging measurement of a distance between the first wireless device and the second wireless device; and

an angle measurement of a direction between the first wireless device and the second wireless device.

16. The apparatus of claim 15, wherein the processor is further configured to cause the second wireless device to:

determine a granted spatial measurement priority based at least in part on the requested spatial measurement priority;

maintain a queue of spatial measurement requests; and

add the spatial measurement request from the first wireless device to the queue in a position determined based on the granted ranging priority.

17. The apparatus of claim 15, wherein to perform the spatial measurement with the first wireless device, the processor is further configured to schedule spatial measurements with the first wireless device based on comparing the requested spatial measurement priority to at least one relative granted spatial measurement priority of at least one other spatial measurement request.

18. The apparatus of claim 15, wherein the processor is further configured to cause the second wireless device to:

reserve resources for high priority spatial measurement sessions;

determine a granted spatial measurement priority based at least in part on the requested spatial measurement priority; and

in response to determining that the granted spatial measurement priority is a high spatial measurement priority, schedule spatial measurements with the first wireless device on at least a portion of the reserved resources.

19. The apparatus of claim 15, wherein the processor is further configured to cause the second wireless device to:

determine a granted spatial measurement priority based at least in part on the requested spatial measurement priority; and

transmit an indication of the granted spatial priority to the first wireless device.

20. The apparatus of claim 19, wherein the processor is further configured to cause the second wireless device to:

schedule data traffic based on the granted spatial measurement priority.