Wireless communications devices and related methods for performing positioning measurements in a service network

Patent metadata

Field	Value
Publication number	US-2016150376-A1
Application number	US-201414551287-A
Country	US
Kind code	A1
Filing date	Nov 24, 2014
Priority date	Nov 24, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

A wireless communications device with a wireless module, a storage unit and a controller module is provided for performing positioning measurements. The wireless module receives a plurality of positioning signals from a service network during respective position occasions. The controller module processes the received signals and performs measurements on the processed signals, wherein measurement result is taken at least three processed signals with respective position occasions, wherein each measurement result is stored in the storage unit with the information of corresponding base station and respective position occasion, wherein performing the measurements further include combining the stored measurement results for all of position occasions for generating a final measurement report.

First claim

1 . A wireless communications device for performing positioning measurements, comprising:
a wireless module for receiving a plurality of positioning signals from each of a plurality of base stations in a service network during a plurality of position occasions; a storage unit; and a controller module for processing the received signals and performing measurements on the processed signals, wherein measurement result is taken according to at least three processed signals with respective position occasions, wherein each measurement result is stored in the storage unit with the information of corresponding base station and respective position occasion, wherein performing the measurements further comprise combining the stored measurement results for all of the position occasions for generating a final measurement report.

2 . The wireless communications device of claim 1 , wherein the controller module further combines the stored measurement results for all of the position occasions with respective weighting values for generating the final measurement report.

3 . The wireless communications device of claim 2 , wherein prior to combining the stored measurement results, the controller module further configures all of the weighting values of the stored measurement results to be the same value.

4 . The wireless communications device of claim 2 , wherein prior to combining the stored measurement results, the controller module further sorts the stored measurement results in an ascending order, configures the weighting values of the maximum one and the minimum one of the sorted measurement results to be 0 and configures the weighting values of remaining sorted measurement results to be the same value.

5 . The wireless communications device of claim 2 , wherein prior to combining the stored measurement results, the controller module further sorts the stored measurement results in an ascending order, configures the weighting values of the sorted measurement results other than the median one of the sorted measurement results to be 0 and configures the weighting value of the median one of the sorted measurement results to be 1.

6 . The wireless communications device of claim 2 , wherein the controller module further combines the stored measurement results for all of the position occasions with respective weighting values by grouping the measurement results for each two of the position occasions into a number of pairs, calculating a difference between the two measurement results for each pair, selecting a pair with the minimum distance among the pairs, averaging the measurement results of the selected pair and determining the averaged result to be the final measurement report.

7 . The wireless communications device of claim 2 , wherein the weighting values for the measurement results are determined based on an averaged signal-to-noise ratio (SNR) of the received signals which are measured during each of the position occasions.

8 . The wireless communications device of claim 2 , wherein the weighting values for the measurement results are determined by table lookup operation using a lookup table.

9 . The wireless communications device of claim 1 , wherein the controller module further performs the combining step on reference signal time difference (RSTD), time of arrival (TOA) or Non-coherent results of the received signals and the positioning measurements comprise RSTD for Time Difference of Arrival (TDOA) positioning.

10 . The wireless communications device of claim 1 , wherein the service network comprises a long term evolution (LTE) network and the positioning signals comprise Positioning Reference Signals (PRS).

11 . The wireless communications device of claim 1 , wherein the controller module further combines the stored measurement results for all of the position occasions with respective weighting values by multiplying each of the stored measurement results with respective weighting value and summing up all of the multiplied results to obtain the final measurement report.

12 . A method for use in a wireless communications device for performing positioning measurements in a service network comprising a plurality of base stations, the method comprising:
receiving from each of the base stations a plurality of positioning signals during a plurality of position occasions; processing the received signals and performing measurements on the processed signals, wherein measurement result is taken according to at least three processed signals with respective position occasions, wherein each measurement result is stored in a storage unit with the information of corresponding base station and respective position occasion, wherein performing the measurements further comprise combining the stored measurement results for all of the position occasions for generating a final measurement report.

13 . The method of claim 12 , wherein combining the stored measurement results further comprises combining the stored measurement results for all of the position occasions with respective weighting values for generating the final measurement report.

14 . The method of claim 13 , further comprising:
configuring all of the weighting values of the stored measurement results to be the same value prior to combining the stored measurement results.

15 . The method of claim 13 , wherein combining the stored measurement results further comprises:
prior to combining the stored measurement results, sorting the stored measurement results in an ascending order, configuring the weighting values of the maximum one and the minimum one of the sorted measurement results to be 0 and configuring the weighting values of remaining sorted measurement results to be the same value.

16 . The method of claim 13 , wherein combining the stored measurement results further comprises:
prior to combining the stored measurement results, sorting the stored measurement results in an ascending order, configuring the weighting values of the sorted measurement results other than the median one of the sorted measurement results to be 0 and configuring the weighting value of the median one of the sorted measurement results to be 1.

17 . The method of claim 13 , wherein combining the stored measurement results further comprises:
grouping the measurement results for each two of the position occasions into a number of pairs; calculating a difference between the two measurement results for each pair, selecting a pair with the minimum distance among the pairs; averaging the measurement results of the selected pair; and determining the averaged result to be the final measurement report.

18 . The method of claim 13 , wherein the weighting values for the measurement results are determined based on an averaged signal-to-noise ratio (SNR) of the received signals which are measured during each of the position occasions.

19 . The method of claim 13 , wherein the weighting values for the measurement results are determined by table lookup operation using a lookup table.

20 . The method of claim 13 , wherein the combining step is performed by multiplying each of the stored measurement results with respective weighting value and summing up all of the multiplied results to obtain the final measurement report for each base station.

21 . The method of claim 12 , wherein the combining step is performed on reference signal time difference (RSTD), time of arrival (TOA) or Non-coherent results of the received signals and the positioning measurements comprise

Assignees

• Mediatek Inc

Inventors

• Chiou Tsung-Yu
• Ting Yuan-Wen

Classifications

• H04W24/02 Primary

  Arrangements for optimising operational condition · CPC title

• H04W4/025 Primary

  using location based information parameters · CPC title

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title