System and method for ranging-assisted positioning of vehicles in vehicle-to-vehicle communications
A method for ranging includes randomly selecting a symbol in each of at least two successive sub-cycles of a ranging cycle, transmitting symbol IDs corresponding to the randomly selected symbols and a sequence ID, and transmitting a ranging signal with the sequence ID on each of the randomly selected symbols.
1. A method for ranging, comprising:
randomly selecting a symbol in each of at least two successive sub-cycles of a ranging cycle, the randomly selected symbol in each of the at least two successive sub-cycles of the ranging cycle occurring in different respective symbol positions in each of the at least two successive sub-cycles of the ranging signal;
transmitting symbol identifications (IDs) corresponding to the randomly selected symbols and a sequence ID; and
transmitting a ranging signal with the sequence ID only on each of the randomly selected symbols to determine a range to an object.
2. The method of claim 1 , further comprising using a pseudo-random process to randomly select the symbol in each of at least two successive sub-cycles.
3. The method of claim 1 , further comprising computing a distance using received ranging signals.
4. The method of claim 1 , further comprising canceling a clock offset when receiving ranging signals.
5. The method of claim 1 , further comprising transmitting time of arrival (ToA) and system delay information corresponding to a received ranging signal.
6. The method of claim 1 , further comprising transmitting the ranging signal using a physical sidelink ranging channel (PSRCH).
7. An apparatus for ranging, comprising:
a randomly selected symbol in each of at least two successive sub-cycles of a ranging cycle, the randomly selected symbol in each of the at least two successive sub-cycles of the ranging cycle occurring in different respective symbol positions in each of the at least two successive sub-cycles of the ranging signal;
a transmitter configured to transmit symbol identifications (IDs) corresponding to the randomly selected symbols and a sequence ID; and
the transmitter configured to transmit a ranging signal with the sequence ID only on each of the randomly selected symbols to determine a range to an object.
8. The apparatus of claim 7 , further comprising a pseudo-random process configured to randomly select the symbol in each of at least two successive sub-cycles.
9. The apparatus of claim 7 , further comprising a processor configured to compute a distance using received ranging signals.
10. The apparatus of claim 7 , further comprising a processor configured to cancel a clock offset when receiving ranging signals.
11. The apparatus of claim 7 , further comprising the transmitter configured to transmit time of arrival (ToA) and system delay information corresponding to a received ranging signal.
12. The apparatus of claim 7 , wherein the ranging signal is transmitted using a physical sidelink ranging channel (PSRCH).
13. A device, comprising:
means for randomly selecting a symbol in each of at least two successive sub-cycles of a ranging cycle, the randomly selected symbol in each of the at least two successive sub-cycles of the ranging cycle occurring in different respective symbol positions in each of the at least two successive sub-cycles of the ranging signal;
means for transmitting symbol identifications (IDs) corresponding to the randomly selected symbols and a sequence ID; and
means for transmitting a ranging signal with the sequence ID only on each of the randomly selected symbols to determine a range to an object.
14. The device of claim 13 , further comprising means for using a pseudo-random process to randomly select the symbol in each of at least two successive sub-cycles.
15. The device of claim 13 , further comprising means for computing a distance using received ranging signals.
16. The device of claim 13 , further comprising means for canceling a clock offset when receiving ranging signals.
17. The device of claim 13 , further comprising means for transmitting time of arrival (ToA) and system delay information corresponding to a received ranging signal.
18. The device of claim 13 , further comprising means for transmitting the ranging signal using a physical sidelink ranging channel (PSRCH).
19. A non-transitory computer-readable medium storing computer executable code for ranging, the code executable by a processor to:
randomly select a symbol in each of at least two successive sub-cycles of a ranging cycle, the randomly selected symbol in each of the at least two successive sub-cycles of the ranging cycle occurring in different respective symbol positions in each of the at least two successive sub-cycles of the ranging signal;
transmit symbol identifications (IDs) corresponding to the randomly selected symbols and a sequence ID; and
transmit a ranging signal with the sequence ID only on each of the randomly selected symbols to determine a range to an object.
20. The non-transitory computer-readable medium of claim 19 , the code executable by a processor to use a pseudo-random process to randomly select the symbol in each of at least two successive sub-cycles.
21. The non-transitory computer-readable medium of claim 19 , wherein the code is executable by a processor to:
compute a distance using received ranging signals.
22. The non-transitory computer-readable medium of claim 19 , wherein the code is executable by a processor to:
cancel a clock offset when receiving ranging signals.
23. The non-transitory computer-readable medium of claim 19 , wherein the code is executable by a processor to:
transmit time of arrival (ToA) and system delay information corresponding to a received ranging signal.
24. The non-transitory computer-readable medium of claim 19 , wherein the code is executable by a processor to:
transmit the ranging signal using a physical sidelink ranging channel (PSRCH).