Application US20200059813

V2X PACKET PRIORITIZATION AND CONTROL TECHNIQUES
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US20200059813

1. A method for vehicle-to-everything (V2X) wireless communication at a first V2X device, comprising: (7) (4)

establishing a set of one or more nearby V2X devices capable of V2X communication with the first V2X device;

assigning a respective priority to each of the one or more nearby V2X devices;

identifying a subset of the set based, at least in part, on the assigned respective priorities and at least one performance factor of the first device; and

limiting processing of packets received from the one or more nearby V2X devices to the packets received from the one or more nearby V2X devices in the subset.

2. The method of claim 1, wherein the at least one performance factor comprises one or more of a die temperature, a processor utilization percentage, a throughput, or a power consumption of the first V2X device. (0)

3. The method of claim 1, wherein identifying the subset further comprises: (0) (1)

4. The method of claim 1, further comprising: (2) (1)

updating the respective priority of at least one of the one or more nearby V2X devices in the set.

5. The method of claim 4, wherein updating the respective priority further comprises: (2) (2)

updating the respective priority of the one or more nearby V2X devices included in the subset by receiving and processing the packets therefrom; and

adding to the subset at least one additional V2X device of the one or more nearby VX devices in the set that has remained outside of the subset for greater than a threshold duration to update the respective priority of the at least one additional V2X device by receiving and processing the packets therefrom.

6. The method of claim 5, wherein adding to the subset further comprises: (0) (1)

7. The method of claim 5, wherein the subset comprises a plurality of entries, and wherein adding to the subset further comprises: (0) (1)

8. The method of claim 4, wherein updating the respective priority further comprises: (0) (2)

9. The method of claim 1, wherein assigning the respective priority to each of the one or more nearby V2X devices further comprises: (1) (2)

processing the respective packets received from each of the one or more nearby V2X devices in the subset to obtain respective device information associated with each of the one or more nearby V2X devices in the subset; and

utilizing the respective device information to assign the respective priority to each of the one or more nearby V2X devices.

10. The method of claim 9, wherein the device information for each respective V2X device of the one or more nearby V2X devices comprises one or more of an indication of a priority of the respective V2X device, a periodicity of the packets received from the respective V2X device, a signal strength of the respective V2X device, or V2X data received from the respective V2X device. (1) (0)

12. The method of claim 1, wherein identifying the subset of the set further comprises: (1) (4)

receiving control information in a subframe, wherein the control information indicates a first number of the packets received from the one or more nearby V2X devices included in the subframe;

determining a second number of the packets allowed to be decoded in the subframe based on the at least one performance factor; and

selecting less than all of the one or more nearby V2X devices in the set for inclusion in the subset when the first number of the packets is greater than the second number of the packets to reduce a receive packet flow rate;

wherein a number of the nearby V2X devices selected for inclusion in the subset is less than or equal to the second number of the packets.

13. The method of claim 12, wherein each of the one or more nearby V2X devices selected for inclusion in the subset transmitted one of the first number of the packets included in the subframe. (0)

14. The method of claim 1, further comprising: (0) (1)

15. The method of claim 1, wherein limiting processing of the packets received from the one or more nearby V2X devices to the packets received from the one or more nearby V2X devices in the subset further comprises: (0) (1)

16. A first vehicle-to-everything (V2X) device for V2X wireless communication, comprising: (7) (3)

a processor;

a transceiver communicatively coupled to the processor; and

a memory communicatively coupled to the processor, wherein the processor is configured to: establish a set of one or more nearby V2X devices capable of V2X communication with the first V2X device;

assign a respective priority to each of the one or more nearby V2X devices;

identify a subset of the set based, at least in part, on the assigned respective priorities and at least one performance factor of the first device; and

limit processing of packets received from the one or more nearby V2X devices to the packets received from the one or more nearby V2X devices in the subset.

17. The first V2X device of claim 16, wherein the at least one performance factor comprises one or more of a die temperature, a processor utilization percentage, a throughput, or a power consumption of the first V2X device. (0)

18. The first V2X device of claim 16, wherein the processor is further configured to: (0) (1)

19. The first V2X device of claim 16, wherein the processor is further configured to: (0) (3)

20. The first V2X device of claim 16, wherein the subset comprises a plurality of entries, and wherein the processor is further configured to: (0) (2)

21. The V2X device of claim 16, wherein the processor is further configured to: (1) (2)

process the respective packets received from each of the one or more nearby V2X devices in the subset to obtain respective device information associated with each of the one or more nearby V2X devices in the subset; and

utilize the respective device information to assign the respective priority to each of the one or more nearby V2X devices in the subset, wherein the device information for each respective V2X device of the one or more nearby V2X devices comprises one or more of an indication of a priority of the respective V2X device, a periodicity of the packets received from the respective V2X device, a signal strength of the respective V2X device, or V2X data received from the respective V2X device.

22. The first V2X device of claim 21, wherein the V2X data of the respective V2X device comprises one or more of vision recognition information indicating a vision condition experienced by the respective V2X device, direction of travel of the respective V2X device, a location of the respective V2X device, a speed of the respective V2X device, an advanced driving assistance system indicator, or a basic safety message (BSM). (0)

23. The first V2X device of claim 16, wherein the processor is further configured to: (1) (4)

receive control information in a subframe, wherein the control information indicates a first number of the packets received from the one or more nearby V2X devices included in the subframe;

determine a second number of the packets allowed to be decoded in the subframe based on the at least one performance factor; and

select less than all of the one or more nearby V2X devices in the set for inclusion in the subset when the first number of the packets is greater than the second number of the packets to reduce a receive packet flow rate;

wherein a number of the one or more nearby V2X devices selected for inclusion in the subset is less than or equal to the second number of the packets.

24. The first V2X device of claim 23, wherein each of the nearby V2X devices selected for inclusion in the subset transmitted one of the first number of the packets included in the subframe. (0)

25. The first V2X device of claim 16, wherein the processor is further configured to: (0) (1)

26. A first cellular vehicle-to-everything (V2X) device for V2X wireless communication, comprising: (4) (4)

means for establishing a set of one or more nearby V2X devices capable of V2X communication with the first V2X device;

means for assigning a respective priority to each of the one or more nearby V2X devices;

means for identifying a subset of the set based, at least in part, on the assigned respective priorities and at least one performance factor of the first device; and

means for limiting processing of packets received from the one or more nearby V2X devices to the packets received from the one or more nearby V2X devices in the subset.

27. The first V2X device of claim 26, wherein the means for identifying the subset of the set further comprises: (0) (1)

28. The first V2X device of claim 26, further comprising: (0) (3)

means for updating the respective priority of the one or more nearby V2X devices included in the subset by receiving and processing the packets therefrom;

means for adding to the subset at least one additional V2X device of the one or more nearby VX devices in the set that has remained outside of the subset for greater than a threshold duration to update the respective priority of the at least one additional V2X device by receiving and processing the packets therefrom; and

means for removing a first number of the one or more nearby V2X devices from the subset corresponding to a second number of the at least one additional V2X device added to the subset.

29. The first V2X device of claim 26, wherein the subset comprises a plurality of entries, and further comprising: (0) (2)

30. The first V2X device of claim 26, further comprising: (0) (4)

means for receiving control information in a subframe, wherein the control information indicates a first number of the packets received from the one or more nearby V2X devices included in the subframe;

means for determining a second number of the packets allowed to be decoded in the subframe based on the at least one performance factor; and

means for selecting less than all of the one or more nearby V2X devices in the set for inclusion in the subset when the first number of the packets is greater than the second number of the packets to reduce a receive packet flow rate;

wherein a number of the one or more nearby V2X devices selected for inclusion in the subset is less than or equal to the second number of the packets.

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Application US20200059813

V2X PACKET PRIORITIZATION AND CONTROL TECHNIQUES

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