Method, apparatus, and system for positioning terminal device
Embodiments of this application disclose a method, an apparatus, and a system for positioning a terminal device. Location measurement data for a to-be-positioned terminal device is obtained by a terminal-side measurement function entity and/or an access-side measurement function entity, where the location measurement data includes a channel estimation and/or a channel impulse response that are/is obtained based on a corresponding downlink/uplink reference signal. The terminal-side measurement function entity and/or the access-side measurement function entity report/reports the location measurement data to a positioning service function entity in a network, so that the positioning function entity can estimate a location of the terminal device based on the location measurement data, thereby positioning the terminal device and improving positioning accuracy. This technical solution can be applied to both a single-base-station-based positioning environment and a multi-base-station-based positioning environment, to position the terminal device.
1. A measurement apparatus for positioning a terminal device, wherein the measurement apparatus comprises at least one processor, wherein the at least one processor is configured to execute an instruction in a memory, and cause the apparatus to implement, based on the instruction:
sending measurement data to a positioning service function entity, wherein the measurement data is obtained based on a received downlink reference signal for the terminal device,
the measurement data is used by the positioning service function entity to estimate a location of the terminal device; and the measurement data comprises at least one of the following: a channel estimation and a channel impulse response,
wherein a pre-established neural network model of a correspondence between the measured data and the location of the terminal device is used.
2. The measurement apparatus according to claim 1 , wherein the at least one processor is configured to execute the instruction in the memory, and cause the apparatus to further implement, based on the instruction:
obtaining the measurement data based on the received downlink reference signal.
3. The measurement apparatus according to claim 1 , wherein the at least one processor is configured to execute the instruction in the memory, and cause the apparatus to further implement, based on the instruction:
receiving first indication information sent by the positioning service function entity, wherein the first indication information is used to indicate the measurement data that needs to be obtained by the measurement apparatus.
4. The measurement apparatus according to claim 3 , wherein the at least one processor is configured to execute the instruction in the memory, and cause the apparatus to further implement, based on the instruction:
receiving assistance information sent by the positioning service function entity, wherein the assistance information is used to assist the measurement apparatus in receiving the received downlink reference signal; and the assistance information and the first indication information are carried in a same message and sent by the positioning service function entity, or are carried in different messages and sent by the positioning service function entity.
5. The measurement apparatus according to claim 1 , wherein the at least one processor is configured to execute the instruction in the memory, and cause the apparatus to further implement, based on the instruction:
sending second indication information to the positioning service function entity, wherein the second indication information is used to indicate a location measurement capability of the measurement apparatus.
6. A measurement apparatus for positioning a terminal device, wherein the measurement apparatus comprises at least one processor, wherein the at least one processor is configured to execute an instruction in a memory, and cause the apparatus to implement, based on the instruction:
sending measurement data to a positioning service function entity, wherein the measurement data is obtained based on an uplink reference signal that is sent by a to-be-positioned terminal device and that is received by the measurement apparatus;
the measurement data is used by the positioning service function entity to estimate a location of the terminal device; and the measurement data comprises at least one of the following: a channel estimation and a channel impulse response,
wherein a pre-established neural network model of a correspondence between the measured data and the location of the terminal device is used.
7. The measurement apparatus according to claim 6 , wherein the at least one processor is configured to execute the instruction in the memory, and cause the apparatus to further implement, based on the instruction:
obtaining the measurement data based on the uplink reference signal.
8. The measurement apparatus according to claim 6 , wherein the at least one processor is configured to execute the instruction in the memory, and cause the apparatus to further implement, based on the instruction:
receiving first indication information sent by the positioning service function entity, wherein the first indication information is used to indicate the measurement data that needs to be obtained by the measurement apparatus.
9. The measurement apparatus according to claim 8 , wherein the at least one processor is configured to execute the instruction in the memory, and cause the apparatus to further implement, based on the instruction:
receiving assistance information sent by the positioning service function entity, wherein the assistance information is used to assist the measurement apparatus in receiving the uplink reference signal; and the assistance information and the first indication information are carried in a same message and sent by the positioning service function entity, or are carried in different messages and sent by the positioning service function entity.
10. The measurement apparatus according to claim 6 , wherein the at least one processor is configured to execute the instruction in the memory, and cause the apparatus to further implement, based on the instruction:
sending second indication information to the positioning service function entity, wherein the second indication information is used to indicate a location measurement capability of the measurement apparatus.
11. A method for positioning a terminal device, wherein the method comprises:
sending, by a terminal device, measurement data to a positioning service function entity, wherein the measurement data is obtained based on a downlink reference signal received by the terminal device;
the measurement data is used by the positioning service function entity to estimate a location of the terminal device; and the measurement data comprises at least one of the following: a channel estimation and a channel impulse response,
wherein a pre-established neural network model of a correspondence between the measured data and the location of the terminal device is used.
12. The method according to claim 11 , wherein before the sending, by the terminal device, the measurement data to the positioning service function entity, the method further comprises:
obtaining the measurement data based on the received downlink reference signal.
13. The method according to claim 11 , wherein before the sending, by the terminal device, the measurement data to the positioning service function entity, the method further comprises:
receiving, by the terminal device, first indication information sent by the positioning service function entity, wherein the first indication information is used to indicate the measurement data that needs to be obtained by the terminal device.
14. The method according to claim 13 , wherein before the sending, by the terminal device, the measurement data to the positioning service function entity, the method further comprises:
receiving, by the terminal device, assistance information sent by the positioning service function entity, wherein the assistance information is used to assist the terminal device in receiving the downlink reference signal; and the assistance information and the first indication information are carried in a same message and sent by the positioning service function entity, or are carried in different messages and sent by the positioning service function entity.
15. The method according to claim 11 , wherein the method further comprises: sending, by the terminal device, second indication information to the positioning service function entity, wherein the second indication information is used to indicate a location measurement capability of the terminal device.