Measurement compensation method, apparatus, server, and system in base station positioning

1. A measurement compensation method for base station positioning, comprising:

receiving, by a positioning server, a reference signal time difference RSTD measurement value between different base stations that is reported by a mobile terminal;

acquiring, by the positioning server, an RSTD measurement compensation value corresponding to a positioning aid device that has a coverage range, wherein the positioning aid device is pre-deployed in a fixed position, the mobile terminal is positioned in a range covered by the positioning aid device corresponding to the fixed position, the RSTD measurement compensation value is used to compensate RSTD measurement within the range, and accuracy of the RSTD measurement compensation value depends on a size of the range covered by the positioning aid device; and

compensating, by the positioning server, the RSTD measurement value according to the RSTD measurement compensation value to obtain an RSTD compensation result.

2. The method according to claim 1 , wherein before acquiring, by the positioning server, the RSTD measurement compensation value corresponding to the positioning aid device, the method further comprises:

performing, by the positioning server, calculation on the RSTD measurement value to obtain a measurement position coordinate of the mobile terminal; and

selecting, by the positioning server, the positioning aid device closest to the measurement position coordinate of the mobile terminal from a plurality of candidate positioning aid devices.

3. The method according to claim 1 , wherein before acquiring, by the positioning server, the RSTD measurement compensation value corresponding to the positioning aid device, the method further comprises:

respectively performing, by the positioning server, matching calculation on the RSTD measurement value and each candidate RSTD measurement value between the different base stations that is reported by each of a plurality of candidate positioning aid devices to obtain a plurality of calculation results, and selecting, by the positioning server, the positioning aid device with the calculation result satisfying a matching condition.

4. The method according to claim 1 , wherein the acquiring, by the positioning server, the RSTD measurement compensation value corresponding to the positioning aid device comprises:

receiving, by the positioning server, an auxiliary RSTD measurement value between the different base stations that is reported by the positioning aid device;

calculating, by the positioning server, an RSTD standard value between the different base stations of the positioning aid device; and

taking, by the positioning server, a difference between the auxiliary RSTD measurement value and the RSTD standard value as the RSTD measurement compensation value.

5. The method according to claim 1 , wherein after the compensating, by the positioning server, the RSTD measurement value to obtain the RSTD compensation result, the method further comprises:

calculating, by the positioning server, a position coordinate of the mobile terminal based on the RSTD compensation result;

determining, by the positioning server, whether the position coordinate of the mobile terminal is positioned within the range; and

when determining that the position coordinate of the mobile terminal is positioned in the range, feeding, by the positioning server, the position coordinate of the mobile terminal back to the mobile terminal.

6. A measurement compensation apparatus in a positioning server for base station positioning, comprising:

a receiving module, configured to receive an RSTD measurement value between different base stations that is reported by a mobile terminal;

an acquiring module, configured to acquire an RSTD measurement compensation value corresponding to a positioning aid device that has a coverage range, wherein the positioning aid device is pre-deployed in a fixed position, the mobile terminal is positioned in a range covered by the positioning aid device corresponding to the fixed position, the RSTD measurement compensation value is used to compensate RSTD measurement within the range, and accuracy of the RSTD measurement compensation value depends on a size of the range covered by the positioning aid device; and

a compensating module, configured to compensate, according to the RSTD measurement compensation value acquired by the acquiring module, the RSTD measurement value received by the receiving module to obtain an RSTD compensation result.

7. The apparatus according to claim 6 , wherein the acquiring module comprises:

a coordinate calculating unit, configured to perform calculation on the RSTD measurement value to obtain a measurement position coordinate of the mobile terminal; and

a first selecting unit, configured to select the positioning aid device closest to the measurement position coordinate of the mobile terminal from a plurality of candidate positioning aid devices according to the measurement position coordinate of the mobile terminal that is calculated by the coordinate calculating unit.

8. The apparatus according to claim 6 , wherein the acquiring module comprises:

a match calculating unit, configured to respectively perform matching calculation on the RSTD measurement value and each candidate RSTD measurement value between the different base stations that is reported by each of a plurality of candidate positioning aid devices to obtain a plurality of calculation results; and

a second selecting unit, configured to select the positioning aid device with the calculation result satisfying a matching condition.

9. The apparatus according to claim 6 , wherein

the receiving module is further configured to receive an auxiliary RSTD measurement value between the different base stations that is reported by the positioning aid device; and

the acquiring module is specifically configured to calculate an RSTD standard value between the different base stations of the positioning aid device, and take a difference between the auxiliary RSTD measurement value and the RSTD standard value as the RSTD measurement compensation value.

10. The apparatus according to claim 6 , further comprising:

a positioning module, configured to calculate a position coordinate of the mobile terminal according to the RSTD compensation result; and

a verifying module, configured to determine whether the position coordinate of the mobile terminal that is calculated by the positioning module is positioned within the range, and if the position coordinate of the mobile terminal that is calculated by the positioning module is positioned within the range, feed the position coordinate of the mobile terminal back to the mobile terminal.

11. A positioning server, comprising:

a transceiver, configured to receive an RSTD measurement value between different base stations that is reported by a mobile terminal; and

a processor, configured to: acquire an RSTD measurement compensation value corresponding to a positioning aid device that has a coverage range, wherein the positioning aid device is pre-deployed in a fixed position, the mobile terminal is positioned in a range covered by the positioning aid device corresponding to the fixed position, the RSTD measurement compensation value is used to compensate RSTD measurement within the range, and accuracy of the RSTD measurement compensation value depends on a size of the range covered by the positioning aid device; and compensate the RSTD measurement value according to the RSTD measurement compensation value to obtain an RSTD compensation result.

12. The positioning server according to claim 11 , wherein

the processor is further configured to perform calculation on the RSTD measurement value to obtain a measurement position coordinate of the mobile terminal, and select the positioning aid device closest to the measurement position coordinate of the mobile terminal from a plurality of candidate positioning aid devices.

13. The positioning server according to claim 11 , wherein

the processor is further configured to respectively perform matching calculation on the RSTD measurement value and each candidate RSTD measurement value between the different base stations that is reported by each of a plurality of candidate positioning aid devices to obtain a plurality of calculation results, and select the positioning aid device with the calculation result satisfying a matching condition.

14. The positioning server according to claim 11 , wherein

the transceiver is further configured to receive an auxiliary RSTD measurement value between the different base stations that is reported by the positioning aid device; and

the processor is further configured to calculate an RSTD standard value between the different base stations of the positioning aid device, and take a difference between the auxiliary RSTD measurement value and the RSTD standard value as the RSTD measurement compensation value.

15. The positioning server according to claim 11 , wherein

the processor is further configured to calculate a position coordinate of the mobile terminal based on the RSTD compensation result, determine whether the position coordinate of the mobile terminal is positioned within the range, and when determining that the position coordinate of the mobile terminal is positioned within the range, feed the position coordinate of the mobile terminal back to the mobile terminal.

16. A base station positioning system, comprising: a positioning server and a positioning aid device that has a coverage range; wherein

the positioning aid device is pre-deployed in a fixed position, and is configured to report an auxiliary RSTD measurement value between different base stations; and

the positioning server is configured to:

receive an RSTD measurement value between the different base stations that is reported by a mobile terminal, wherein the mobile terminal is positioned in a range covered by the positioning aid device corresponding to the fixed position;

calculate a difference between the auxiliary RSTD measurement value and an RSTD standard value between the different base stations of the positioning aid device, and take the difference as an RSTD measurement compensation value corresponding to the positioning aid device, wherein the RSTD measurement compensation value is used to compensate RSTD measurement within the range, and accuracy of the RSTD measurement compensation value depends on a size of the range covered by the positioning aid device; and

compensate the RSTD measurement value according to the RSTD measurement compensation value to obtain an RSTD compensation result.