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Positioning method and positioning server

A technology of positioning server and positioning method, applied in the field of positioning method and positioning server, can solve the problems of inability to obtain better results, large error in calculation results, low positioning accuracy, etc., and achieve the effect of positioning estimation

Inactive Publication Date: 2011-02-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the premise of obtaining high positioning accuracy in this way is that there must first be a sufficient number of measured value parameters, otherwise the calculation function cannot be performed due to insufficient number of equations; secondly, the error of the measured parameters needs to be within a certain range, Otherwise, it is very likely that no effective calculation results can be obtained or the calculation results have large errors, even lower than the positioning accuracy obtained by only using the Cell-ID positioning technology at the same position; Multi-base station triangulation positioning technology, and the accuracy of the calculation method of this technology is closely related to the geometric distribution of reference points, that is, it will be affected by the so-called Geometric Dilution of Precision (GDOP, Geometric Dilution of Precision) or horizontal precision factor (HDOP, Horizontal Dilution of Precision), and when the terminal is close to a certain base station, it usually cannot obtain better GDOP or HDOP, so generally it cannot obtain more accurate calculation results.

Method used

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  • Positioning method and positioning server

Examples

Experimental program
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Effect test

Embodiment 1

[0054] The application scenario of this embodiment is a 2G network, figure 2 It is a schematic structural diagram of a reference model for implementing a positioning method in a 2G network of the present invention. If the enhanced cell ID positioning technology is to be implemented in a 2G network, this reference model is usually required; figure 2 As shown, the LCS client is the requester who initiates the positioning service process on the network side, and the Gateway Mobile Location Center (GMLC, Gateway Mobile Location Center) is responsible for the control and authentication of the positioning service process; the interface between the LCS client and the GMLC is The interface of the positioning service provided by the mobile communication operator adopts the Mobile Location Protocol (MLP, Mobile Location Protocol) defined by the OMA organization to carry the positioning request message and the response message; the GMLC communicates with the core network's home location...

Embodiment 2

[0074] The application scenario of this embodiment is a 3G network, Figure 4 It is a schematic structural diagram of a reference model for realizing the positioning method in the 3G network of the present invention. If the enhanced cell ID positioning technology is to be implemented in the 3G network, for example, the Cell ID+RTT positioning technology of the WCDMA system of the 3G network or the TD-SCDMA system CellID+TA positioning technology usually adopts this reference model; Figure 4 As shown, the functions of network elements such as the LCS client, GMLC, HLR, MSC, and SGSN are similar to those in the 2G network reference model, and the interfaces between them are also similar to the corresponding interfaces in the 2G network reference model; The GMLC obtains the current routing information of the terminal, and can initiate a positioning request through the interface with the MSC / SGSN. After receiving the positioning request, the MSC / SGSN forwards it to the access ter...

Embodiment 3

[0095] The application scenario of this embodiment is a CDMA network, Figure 6 It is a schematic structural diagram of a reference model for realizing the positioning method in the CDMA network of the present invention. If the EFIT positioning technology is to be implemented in the CDMA network, this reference model needs to be adopted usually; Figure 6 As shown, the functions of network elements such as the LCS client, MPC, HLR, and MSC are similar to those in the reference models of the above two positioning technologies; wherein, the implementation form of the L1 interface between the LCS client and the MPC is the same as that of the above two positioning technology reference models. The implementation form of the Le interface between the GMLC and the LCS client in the embodiment is the same; through the interface with the HLR, the MPC can obtain the current routing information of the terminal, and can initiate a location request through the interface with the MSC; the MSC...

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Abstract

The invention discloses a positioning method, which comprises a step of calculating position estimation of a terminal by using single base station positioning technology when the distance between at least one neighboring area base station and a service base station is smaller than or equal to a preset base station distance threshold, or when the distances between all neighboring area base stations and the service base station are greater than the preset base station distance threshold and the distance between the terminal and the service base station is close distance. The invention also provides a positioning server. According to the technical scheme of the invention, positioning estimation of the terminal is realized more accurately.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a positioning method and a positioning server. Background technique [0002] As one of the characteristic services of the mobile communication system, the positioning service has always been considered as a bright spot in the future mobile value-added services. At present, major mobile communication operators in North America, Europe, Asia Pacific, Japan and South Korea and other countries and regions have opened the positioning service. The positioning service is the most attractive service in the mobile value-added service, and it is also one of the most complicated services in all links of the industry chain. [0003] The positioning technology in the mobile communication system refers to the measurement of certain parameters in the received radio waves, such as transmission time, amplitude, phase and signal angle of arrival (AOA, Angel of Arrival), etc., and uses specific al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
CPCH04W4/023G01S5/14H04W64/00
Inventor 单良
Owner ZTE CORP
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