Collision avoidance and implicit location encoding in vehicle-to-pedestrian networks

1. A method for wireless communication at a transmitting device, comprising:

identifying location coordinates corresponding to a physical location of the transmitting device;

identifying a time-frequency resource within a slot, the time-frequency resource corresponding to at least a portion of the location coordinates corresponding to the physical location of the transmitting device;

generating a sequence based at least in part on the portion of the location coordinates, or the slot, or the time-frequency resource, or a combination thereof;

encoding a signal using the sequence; and

transmitting the signal using the identified time-frequency resource to indicate the physical location of the transmitting device.

2. The method of claim 1 , further comprising:

determining that the physical location of the transmitting device lies within a location area of a set of available location areas, wherein the sequence is based at least in part on the location area.

3. The method of claim 2 , wherein each location area within the set of available location areas comprises a grid of geographic areas, each geographic area corresponding to a time-frequency resource within a set of available time-frequency resources.

4. The method of claim 1 , further comprising:

retrieving information identifying the location coordinates from a global positioning system of the transmitting device.

5. The method of claim 1 , further comprising:

identifying least significant bits (LSBs) of the location coordinates.

6. A method for wireless communication at a receiving device, comprising:

receiving a signal from a transmitting device over a time-frequency resource within a slot;

attempting to decode the signal using a set of available sequences, each sequence in the set of available sequences associated with the time-frequency resource and the slot;

identifying a sequence from the set of available sequences based at least in part on successfully decoding the signal using the sequence; and

determining a physical location of the transmitting device based at least in part on the time-frequency resource, or the slot, or the sequence, or a combination thereof.

7. The method of claim 6 , further comprising:

determining that the physical location of the transmitting device lies within a location area of a set of available location areas, wherein the sequence is based at least in part on the location area.

8. The method of claim 7 , wherein each location area within the set of available location areas comprises a grid of geographic areas, each geographic area corresponding to a time-frequency resource within a set of available time-frequency resources.

9. The method of claim 6 , wherein determining the physical location of the transmitting device comprises:

identifying, based at least in part on the sequence, at least a portion of coordinates associated with the physical location of the transmitting device.

10. The method of claim 9 , further comprising:

identifying least significant bits (LSBs) of the coordinates based at least in part on the time-frequency resource, wherein the portion of the coordinates comprises the LSBs of the coordinates.

11. An apparatus for wireless communication at a transmitting device, comprising:

a processor,

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

identify location coordinates corresponding to a physical location of the transmitting device;

identify a time-frequency resource within a slot, the time-frequency resource corresponding to at least a portion of the location coordinates corresponding to the physical location of the transmitting device;

generate a sequence based at least in part on the portion of the location coordinates, or the slot, or the time-frequency resource, or a combination thereof;

encode a signal using the sequence; and

transmit the signal using the identified time-frequency resource to indicate the physical location of the transmitting device.

12. The apparatus of claim 11 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that the physical location of the transmitting device lies within a location area of a set of available location areas, wherein the sequence is based at least in part on the location area.

13. The apparatus of claim 12 , wherein each location area within the set of available location areas comprises a grid of geographic areas, each geographic area corresponding to a time-frequency resource within a set of available time-frequency resources.

14. The apparatus of claim 11 , wherein the instructions are further executable by the processor to cause the apparatus to:

retrieve information identifying the location coordinates from a global positioning system of the transmitting device.

15. The apparatus of claim 11 , wherein the instructions are further executable by the processor to cause the apparatus to:

identify least significant bits (LSBs) of the location coordinates.

16. An apparatus for wireless communication at a receiving device, comprising:

a processor,

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

receive a signal from a transmitting device over a time-frequency resource within a slot;

attempt to decode the signal using a set of available sequences, each sequence in the set of available sequences associated with the time-frequency resource and the slot;

identify a sequence from the set of available sequences based at least in part on successfully decoding the signal using the sequence; and

determine a physical location of the transmitting device based at least in part on the time-frequency resource, or the slot, or the sequence, or a combination thereof.

17. The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that the physical location of the transmitting device lies within a location area of a set of available location areas, wherein the sequence is based at least in part on the location area.

18. The apparatus of claim 17 , wherein each location area within the set of available location areas comprises a grid of geographic areas, each geographic area corresponding to a time-frequency resource within a set of available time-frequency resources.

19. The apparatus of claim 16 , wherein the instructions to determine the physical location of the transmitting device are executable by the processor to cause the apparatus to:

identify, based at least in part on the sequence, at least a portion of coordinates associated with the physical location of the transmitting device.

20. The apparatus of claim 19 , wherein the instructions are further executable by the processor to cause the apparatus to:

identify least significant bits (LSBs) of the coordinates based at least in part on the time-frequency resource, wherein the portion of the coordinates comprises the LSBs of the coordinates.

21. An apparatus for wireless communication at a transmitting device, comprising:

means for identifying location coordinates corresponding to a physical location of the transmitting device;

means for identifying a time-frequency resource within a slot, the time-frequency resource corresponding to at least a portion of the location coordinates corresponding to the physical location of the transmitting device;

means for generating a sequence based at least in part on the portion of the location coordinates, or the slot, or the time-frequency resource, or a combination thereof;

means for encoding a signal using the sequence; and

means for transmitting the signal using the identified time-frequency resource to indicate the physical location of the transmitting device.

22. The apparatus of claim 21 , further comprising:

means for determining that the physical location of the transmitting device lies within a location area of a set of available location areas, wherein the sequence is based at least in part on the location area.

23. The apparatus of claim 22 , wherein each location area within the set of available location areas comprises a grid of geographic areas, each geographic area corresponding to a time-frequency resource within a set of available time-frequency resources.

24. The apparatus of claim 21 , further comprising:

means for retrieving information identifying the location coordinates from a global positioning system of the transmitting device.

25. The apparatus of claim 21 , further comprising:

means for identifying least significant bits (LSBs) of the location coordinates.

26. An apparatus for wireless communication at a receiving device, comprising:

means for receiving a signal from a transmitting device over a time-frequency resource within a slot;

means for attempting to decode the signal using a set of available sequences, each sequence in the set of available sequences associated with the time-frequency resource and the slot;

means for identifying a sequence from the set of available sequences based at least in part on successfully decoding the signal using the sequence; and

means for determining a physical location of the transmitting device based at least in part on the time-frequency resource, or the slot, or the sequence, or a combination thereof.

27. The apparatus of claim 26 , further comprising:

means for determining that the physical location of the transmitting device lies within a location area of a set of available location areas, wherein the sequence is based at least in part on the location area.

28. The apparatus of claim 27 , wherein each location area within the set of available location areas comprises a grid of geographic areas, each geographic area corresponding to a time-frequency resource within a set of available time-frequency resources.

29. The apparatus of claim 26 , wherein the means for determining the physical location of the transmitting device comprises:

means for identifying, based at least in part on the sequence, at least a portion of coordinates associated with the physical location of the transmitting device.

30. The apparatus of claim 29 , further comprising:

means for identifying least significant bits (LSBs) of the coordinates based at least in part on the time-frequency resource, wherein the portion of the coordinates comprises the LSBs of the coordinates.

31. A non-transitory computer-readable medium storing code for wireless communication at a transmitting device, the code comprising instructions executable by a processor to:

identify location coordinates corresponding to a physical location of the transmitting device;

identify a time-frequency resource within a slot, the time-frequency resource corresponding to at least a portion of the location coordinates corresponding to the physical location of the transmitting device;

generate a sequence based at least in part on the portion of the location coordinates, or the slot, or the time-frequency resource, or a combination thereof;

encode a signal using the sequence; and

transmit the signal using the identified time-frequency resource to indicate the physical location of the transmitting device.

32. A non-transitory computer-readable medium storing code for wireless communication at a receiving device, the code comprising instructions executable by a processor to:

receive a signal from a transmitting device over a time-frequency resource within a slot;

attempt to decode the signal using a set of available sequences, each sequence in the set of available sequences associated with the time-frequency resource and the slot;

identify a sequence from the set of available sequences based at least in part on successfully decoding the signal using the sequence; and

determine a physical location of the transmitting device based at least in part on the time-frequency resource, or the slot, or the sequence, or a combination thereof.