Positioning method, apparatus, and device
This application provides a positioning method, apparatus, and device. The method includes: receiving a first positioning reference signal PRS on a first frequency domain resource, where the first frequency domain resource is a frequency domain resource in an unlicensed spectrum; receiving a second PRS on a second frequency domain resource, where the second frequency domain resource is a frequency domain resource in a licensed spectrum; determining, based on the first PRS and the second PRS, a first positioning measurement result corresponding to the first PRS and a second positioning measurement result corresponding to the second PRS; and determining a location of a terminal based on the first positioning measurement result and the second positioning measurement result. The method may be applicable to quickly and accurately determining the location of the terminal without occupying a large quantity of frequency domain resources in the licensed spectrum.
1. A positioning method, comprising:
receiving a first positioning reference signal (PRS) on a first frequency domain resource, wherein the first frequency domain resource is a frequency domain resource in an unlicensed spectrum, and wherein the first positioning measurement result comprises a time of arrival (TOA) of the first PRS or a time difference of arrival (TDOA) of the first PRS, wherein the TDOA is a difference value between TOAs that the first PRS sent by a terminal takes to arrive at different network devices, or a difference value between TOAs that first PRSs sent by different network devices take to arrive at the terminal;
receiving a second PRS on a second frequency domain resource, wherein the second frequency domain resource is a frequency domain resource in a licensed spectrum, and wherein the second positioning measurement result comprises an angle of arrival (AOA) of the second PRS;
determining, based on the first PRS and the second PRS, a first positioning measurement result corresponding to the first PRS and a second positioning measurement result corresponding to the second PRS; and
determining a location of the terminal based on the first positioning measurement result and the second positioning measurement result, wherein the location of the terminal is determined based on the AOA of the second PRS in the licensed spectrum and the TOA or the TDOA of the first PRS in the unlicensed spectrum.
2. The positioning method according to claim 1 , wherein the first frequency domain resource is the frequency domain resource of a first preset bandwidth in the unlicensed spectrum; and the second frequency domain resource is the frequency domain resource of a second preset bandwidth in the licensed spectrum.
3. The positioning method according to claim 2 , wherein the first preset bandwidth is an overall bandwidth of the unlicensed spectrum, the second preset bandwidth is a part of a bandwidth of the licensed spectrum, and the first preset bandwidth is greater than the second preset bandwidth.
4. The positioning method according to claim 1 , wherein the first frequency domain resource is the frequency domain resource that is in the unlicensed spectrum and that corresponds to a preset time window; the preset time window comprises a first preset quantity of time units, the time unit is one of the following: a symbol or a slot, and the first preset quantity is greater than or equal to 1.
5. The positioning method according to claim 4 , wherein the time units of the first preset quantity that is greater than 1 are all consecutive.
6. The positioning method according to claim 4 , wherein the second frequency domain resource is the frequency domain resource that is in the licensed spectrum and that corresponds to the preset time window.
7. The positioning method according to claim 4 , wherein the preset time window is in a preset periodicity, the preset periodicity comprises a second preset quantity of consecutive time units, and the second preset quantity is greater than the first preset quantity.
8. A positioning apparatus, comprising:
a receiver configured to:
receive a first positioning reference signal (PRS) on a first frequency domain resource, wherein the first frequency domain resource is a frequency domain resource in an unlicensed spectrum, and wherein the first positioning measurement result comprises a time of arrival (TOA) of the first PRS or a time difference of arrival (TDOA) of the first PRS, wherein the TDOA is a difference value between TOAs that the first PRS sent by a terminal takes to arrive at different network devices, or a difference value between TOAs that first PRSs sent by different network devices take to arrive at the terminal; and
receive a second PRS on a second frequency domain resource, wherein the second frequency domain resource is a frequency domain resource in a licensed spectrum, and wherein the second positioning measurement result comprises an angle of arrival (AOA) of the second PRS;
a non-transitory memory storage comprising instructions; and
one or more hardware processors in communication with the non-transitory memory storage, wherein the one or more hardware processors execute the instructions to:
determine, based on the first PRS and the second PRS, a first positioning measurement result corresponding to the first PRS and a second positioning measurement result corresponding to the second PRS; and
determine a location of the terminal based on the first positioning measurement result and the second positioning measurement result, wherein the location of the terminal is determined based on the AOA of the second PRS in the licensed spectrum and the TOA or the TDOA of the first PRS in the unlicensed spectrum.
9. The positioning apparatus according to claim 8 , wherein the first frequency domain resource is the frequency domain resource of a first preset bandwidth in the unlicensed spectrum; and the second frequency domain resource is the frequency domain resource of a second preset bandwidth in the licensed spectrum.
10. The positioning apparatus according to claim 9 , wherein the first preset bandwidth is an overall bandwidth of the unlicensed spectrum, and the second preset bandwidth is a part of a bandwidth of the licensed spectrum.
11. The positioning apparatus according to claim 8 , wherein the first frequency domain resource is the frequency domain resource that is in the unlicensed spectrum and that corresponds to a preset time window; the preset time window comprises a first preset quantity of time units, the time unit is one of the following: a symbol or a slot, and the first preset quantity is greater than or equal to 1.
12. The positioning apparatus according to claim 11 , wherein the time units of the first preset quantity that is greater than 1 are all consecutive.
13. The positioning apparatus according to claim 11 , wherein the second frequency domain resource is the frequency domain resource that is in the licensed spectrum and that corresponds to the preset time window.
14. The positioning apparatus according to claim 11 , wherein the preset time window is in a preset periodicity, the preset periodicity comprises a second preset quantity of consecutive time units, and the second preset quantity is greater than the first preset quantity.
15. A positioning device, comprising a processor and a receiver, wherein
the receiver is configured to receive a first positioning reference signal (PRS) on a first frequency domain resource, wherein the first frequency domain resource is a frequency domain resource in an unlicensed spectrum, and wherein the first positioning measurement result comprises a time of arrival (TOA) of the first PRS or a time difference of arrival (TDOA) of the first PRS, wherein the TDOA is a difference value between TOAs that the first PRS sent by a terminal takes to arrive at different network devices, or a difference value between TOAs that first PRSs sent by different network devices take to arrive at the terminal;
the receiver is configured to receive a second PRS on a second frequency domain resource, wherein the second frequency domain resource is a frequency domain resource in a licensed spectrum, and wherein the second positioning measurement result comprises an angle of arrival (AOA) of the second PRS;
the processor is configured to determine, based on the first PRS and the second PRS, a first positioning measurement result corresponding to the first PRS and a second positioning measurement result corresponding to the second PRS; and
the processor is configured to determine a location of a terminal based on the first positioning measurement result and the second positioning measurement result, wherein the location of the terminal is determined based on the AOA of the second PRS in the licensed spectrum and the TOA or the TDOA of the first PRS in the unlicensed spectrum.
16. The positioning device according to claim 15 , wherein the first frequency domain resource is the frequency domain resource of a first preset bandwidth in the unlicensed spectrum; and the second frequency domain resource is the frequency domain resource of a second preset bandwidth in the licensed spectrum.
17. The positioning device according to claim 16 , wherein the first preset bandwidth is an overall bandwidth of the unlicensed spectrum, the second preset bandwidth is a part of a bandwidth of the licensed spectrum, and the first preset bandwidth is greater than the second preset bandwidth.
18. The positioning device according to claim 15 , wherein the first frequency domain resource is the frequency domain resource that is in the unlicensed spectrum and that corresponds to a preset time window; the preset time window comprises a first preset quantity of time units, the time unit is one of the following: a symbol or a slot, and the first preset quantity is greater than or equal to 1.
19. The positioning device according to claim 18 , wherein the time units of the first preset quantity that is greater than 1 are all consecutive.
20. The positioning device according to claim 18 , wherein the second frequency domain resource is the frequency domain resource that is in the licensed spectrum and that corresponds to the preset time window.