Mobile station positioning method and system as well as positioning calculation unit

A positioning method and positioning calculation technology, applied in electrical components, wireless communication and other directions, can solve the problem of insufficient positioning error

Inactive Publication Date: 2011-03-30
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

from Figure 12 It can be seen that the positioning error generated by using the TDOA algorithm for positioning cannot meet the requirements of the E911 service specification issued by the US Communications Commission (FCC)

Method used

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  • Mobile station positioning method and system as well as positioning calculation unit
  • Mobile station positioning method and system as well as positioning calculation unit
  • Mobile station positioning method and system as well as positioning calculation unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0175] In this embodiment, the TDOA algorithm and the TOA algorithm are used to realize hybrid positioning, and the MS triggers the positioning process.

[0176] The mixed positioning process of the first embodiment is roughly as follows: by executing the scanning process, obtain the relative time delay required by the TDOA algorithm, and send it to the positioning calculation unit; by executing the ranging process, obtain the RTD between the MS and the serving base station, and Send to the positioning calculation unit; the positioning calculation unit calculates the distance d between the MS and the serving base station according to the relative time delay, and calculates the distance d' between the MS and the serving base station according to the RTD; then, the positioning calculation unit performs the aforementioned steps 404 to 408 , so as to complete the mixed positioning.

[0177] Specifically, Figure 6 The specific process of hybrid positioning in the first embodiment...

Embodiment 2

[0196] In this embodiment, TDOA and RSSI are used to implement hybrid positioning, and the MS triggers the positioning process.

[0197] The mixed positioning process of the second embodiment is roughly as follows: by executing the scanning process, the serving base station obtains the relative time delay required by the TDOA algorithm and sends it to the positioning calculation unit; by executing the channel measurement report process, the serving base station obtains the serving base station to the MS RSSI, and send to the positioning calculation unit; the positioning calculation unit calculates the distance d between the MS and the serving base station according to the relative time delay, and calculates the distance d' between the MS and the serving base station according to the RSSI; then, the positioning calculation unit executes step 404 Go to 408 to complete the mixed positioning.

[0198] Specifically, Figure 7 The specific process of hybrid positioning in the secon...

Embodiment 3

[0258] In this embodiment, TDOA and TOA are used to realize hybrid positioning, the MS triggers the positioning process, and the positioning calculation unit is set on the positioning server.

[0259] Figure 8 It is a flow chart of hybrid positioning in Embodiment 3 of the present invention. Such as Figure 8 As shown, the process includes the following steps:

[0260] Step 801: The MS sends a positioning request signaling to the serving base station.

[0261] The positioning method type indication unit in the positioning request signaling is set to indicate the use of a hybrid positioning method.

[0262] Step 802: After receiving the positioning request signaling, the serving base station determines that TDOA+TOA is used to realize hybrid positioning, and the MS does not need to send Ranging, and then sends a positioning response signaling to the MS.

[0263] In the positioning response signaling:

[0264] A positioning method type indicating unit, which is set to indi...

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Abstract

The invention discloses a mobile station positioning method which combines a TDOA (Time Difference of Arrival) algorithm and a TOA (Time of Arrival) / RSSI (Received Signal Strength Indication) algorithm; when the distance difference between the distance obtained by using the TDOA algorithm and the distance obtained by using the TOA / RSSI algorithm is not within a preset range, the reliability of the positioning result obtained from the TDOA algorithm is deemed to be not high, and at the moment, the position of an MS (Mobile Station) can be reestimated according to the distance obtained from the TOA / RSSI algorithm and the angle obtained from the TDOA algorithm, therefore, the positioning precision is improved. The invention also discloses a mobile station positioning system and a positioning calculation unit, both of which can improve the positioning precision.

Description

technical field [0001] The invention relates to wireless mobile communication technology, in particular to a positioning method and system for a mobile station, and a positioning calculation unit. Background technique [0002] The research on wireless positioning technology began with the automatic vehicle positioning system in the 1960s, and then the technology was widely used in public transportation, taxi dispatching, and public security tracking. In recent years, the demand for positioning services in mobile communication networks has also increased rapidly, and a variety of wireless positioning technologies suitable for mobile communication networks have emerged. [0003] At present, the most commonly used wireless positioning methods in mobile communication networks mainly include: Time Difference of Arrival (TDOA, Time Difference of Arrival) algorithm, Time of Arrival (TOA, Time of Arrival) algorithm and Received Signal Strength Indication (RSSI, Received signal stren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
Inventor 周雷郑旭峰许方敏金相宪
Owner BEIJING SAMSUNG TELECOM R&D CENT
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