Terminal positioning method, terminal and positioning server

A positioning server and terminal positioning technology, applied in satellite radio beacon positioning systems, instruments, measuring devices, etc., can solve problems such as poor accuracy, inaccurate positioning, and inability to update in real time, and achieve the effect of improving accuracy

Inactive Publication Date: 2015-01-21
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the satellite signal is received outdoors, the reception quality is better in open areas, but indoors, or in high-rise dense areas, the quality is poor, which will lead to poor positioning accuracy using satellite navigation systems
[0055] Although there are some means to enhance satellite positioning in indoor or high-rise dense areas, the relevant information needs to be downloaded from the network in advance by the positioning terminal, and cannot be updated in real time
For example, when the new deployment or removal of the pseudolite, the location moves, and the map information downloaded by the client is not updated in time, there will be problems such as inaccurate positioning.

Method used

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  • Terminal positioning method, terminal and positioning server
  • Terminal positioning method, terminal and positioning server
  • Terminal positioning method, terminal and positioning server

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0252] In the LTE system, a case where the UE acts as a positioning initiator is taken as an example for illustration.

[0253] The flowchart of this embodiment is as figure 1 As shown, but in step S103b of the process, when the terminal reports the positioning capability, it can indicate the terminal's support for using pseudolite for positioning, and can also report which frequencies it supports for receiving satellite signals. In steps S104a and S104b, when the terminal requests the positioning server to provide assistance data, if the terminal supports pseudolite positioning, it needs to report the identity of the serving cell where it is located. The positioning server judges whether the location of the terminal is indoors or high-rise densely populated area according to the terminal's assistance data request information and the information of its cell. The auxiliary data of the pseudolite also needs to provide the auxiliary data of the pseudolite. For example: In addit...

Embodiment 2

[0263] In the UMTS system, there is an independent positioning server, that is, the positioning server is the SAS.

[0264] Such as Figure 7 as shown, Figure 7 In addition to step S500, all the other steps are related to Figure 5 Similarly, in this embodiment, during the terminal access to the network, step S500 is performed: the terminal reports its own capabilities, and when reporting its own capabilities, the terminal will report the terminal's support for using pseudolite positioning. If the terminal is capable of using pseudolite positioning, it may report that it supports pseudolite positioning. Further, in step S500, it may also report which satellite frequencies it supports. SRNC receives the information and saves it. When the terminal needs to be positioned, SRNC will initiate a positioning initialization request to SAS, and report the pseudolite positioning supported by the terminal and the information of the serving cell where the terminal is located, so that S...

Embodiment 3

[0266] In the UMTS system, the SRNC serves as a location server to complete location-related functions.

[0267] Such as Figure 8 as shown, Figure 8 In addition to step S400, all the other steps are related to Figure 4 Similarly, in this embodiment, when the terminal communicates with the positioning server, step S400 is performed: the terminal reports its own capabilities, and the reported capabilities include positioning capabilities, that is, the terminal supports the use of pseudolite positioning, if It supports the use of pseudolite positioning, and at the same time reports the frequency point information of the supported satellite signal reception. According to the service cell information of the terminal and the ability of pseudolite positioning, the SRNC judges whether it is indoor, whether it is a high-rise dense area, whether there is a pseudolite deployment, etc., and then judges whether it is necessary to provide auxiliary data of pseudolite . When it is det...

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Abstract

The present invention relates to communication technology. Disclosed are a terminal positioning method, terminal and positioning server. When determining, according to the serving cell information of a terminal, that the terminal can be positioned via a pseudolite, a positioning server transmits auxiliary data of the pseudolite to the terminal. The auxiliary data of the pseudolite in the terminal can be timely updated to avoid inaccurate positioning of the terminal due to inaccurate auxiliary data of the pseudolite, thus improving terminal positioning accuracy.

Description

technical field [0001] The present invention relates to positioning technology, in particular to a terminal positioning method, a terminal and a positioning server. Background technique [0002] With the publication of Beidou navigation interface documents, positioning through the Beidou navigation system is increasingly used in various industries. Considering that it is difficult to receive navigation satellite signals indoors or in densely populated areas, resulting in poor positioning accuracy, pseudo-Beidou satellites came into being. This kind of pseudo Beidou satellite is deployed to send satellite signals indoors and other places where satellite signals are weak. The Beidou client needs to download pseudolite information and RF maps in advance (by measuring the signal strength of multiple pseudolites at each location in advance and building a map model) for positioning. [0003] At present, information about pseudolites and their RF (Radio Frequency, radio frequency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00G01S19/46
CPCG01S19/46H04W64/003H04W64/006G01S19/11H04W64/00
Inventor 全海洋王可张英李艳华刘建华
Owner CHINA ACAD OF TELECOMM TECH
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