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Wireless terminal positioning method and device

A wireless terminal and positioning device technology, applied in the field of data communication, can solve the problem that the satellite positioning system cannot be used flexibly, and achieve the effects of reducing deployment costs, good compatibility, and low implementation cost

Active Publication Date: 2013-12-04
NEW H3C TECH CO LTD
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to objective problems such as satellite signal penetration capabilities, these satellite positioning systems cannot be flexibly used in indoor environments

Method used

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  • Wireless terminal positioning method and device
  • Wireless terminal positioning method and device
  • Wireless terminal positioning method and device

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Experimental program
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Embodiment Construction

[0018] In the wireless local area network (hereinafter referred to as WLAN) positioning technology, the device (such as AC) at the control plane first monitors the wireless signal sent by the same wireless terminal STA through different access points AP, and determines its distance through signal strength parameters (such as RSSI) . When the number of APs listening to the same SAT is greater than or equal to three, since the position of the AP is fixed and known to the control plane, it can be calculated by solving a ternary equation through the three-point positioning algorithm The location of the STA, and the location can be marked on the map or in any reference system. In actual implementation, if the number of APs listening to the STA is more than three, the positioning accuracy will usually be higher.

[0019] The above describes a theoretical implementation method. However, considering the reality of network operation, when a STA associates with an AP in a certain WLAN...

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Abstract

The invention provides a wireless terminal STA positioning method and device which are applied to wireless controller ACs in the wireless local area network (WLAN), wherein the ACs are used for managing a plurality of wireless access points (APs). The wireless terminal STA positioning method includes the following steps of sending a collection control instruction to the relevant APs of STAs to be positioned, wherein the collection control instruction is used for indicating the relevant APs to send a beacon measurement request (BMRQ) to the STAs to be positioned; acquiring signal intensity parameters between N APs and the STAs to be positioned through downlink interfaces of the ACs, wherein the N is a natural number; and calculating positions of the STAs to be positioned according to the signal intensity parameters between the N APs and the STAs to be positioned as well as positions of the N APs when N is larger than or equal to three. Compared with wireless terminal STA positioning methods and devices in prior art, the wireless terminal STA positioning method and device have the advantages of being low in cost, good in compatibility, and capable of substantially reducing networking deploy costs of users.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a wireless terminal positioning method and device in a wireless local area network. Background technique [0002] Satellite positioning systems such as GPS and Beidou solve the problem of outdoor terminal positioning. At present, these positioning systems have been widely used in military and civilian markets. However, due to objective problems such as the penetration ability of satellite signals, these satellite positioning systems cannot be used flexibly in indoor environments at present. With the development of wireless local area network technology and its wide application in the world, it begins to undertake the task of indoor positioning. Contents of the invention [0003] In view of this, the present invention provides a wireless terminal STA positioning device, which is applied to a wireless controller AC in a wireless local area network WLAN, wherein the AC is used t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04W84/12
Inventor 傅嘉嘉
Owner NEW H3C TECH CO LTD
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