Radio frequency fingerprint positioning method and system as well as access controller (AC) and positioning server

Abstract

The invention provides a radio frequency fingerprint positioning method and system as well as an access controller (AC) and a positioning server. The method comprises the following steps: the positioning server sends a first positioning indication message which contains an identifier of the appointed equipment to an access point (AP) through the AC, so the AP can collect the received signal strength indication (RSSI) of the appointed equipment; the AC receives the RSSI of the appointed equipment fed back from the AP, filters the RSSI of the appointed equipment according to a preset dimensional threshold value and an RSSI threshold value to generate a fingerprint feature vector at least containing the preset dimensional threshold value number of the RSSI, and sends the fingerprint feature vector to the positioning server; and the positioning server positions the appointed equipment according to the fingerprint feature vector and a preserved standard fingerprint feature vector containing at least the preset dimensional threshold value number of the RSSI and position coordinates. By utilizing the technical scheme of the invention, the complexity of positioning by using a radio frequency fingerprint technique can be decreased, and the positioning precision can be increased.

Description

Technical field [0001] The present invention relates to network communication technology, in particular to a radio frequency fingerprint positioning method, system, wireless controller and positioning server. Background technique [0002] Wireless Local Area Networks (Wireless Local Area Networks; WLAN for short) refers to a network that uses wireless communication technology to interconnect computer devices so that clients can access broadband networks anytime and anywhere to realize information sharing. Among them, a wireless client (for example, a notebook computer, a personal digital assistant, or a wireless network card supporting the WLAN access function) accesses the wireless local area network through a wireless access point (Access Point; referred to as AP). AP is a bridge connecting wired network and wireless LAN. Its main function is to connect each wireless client together, and then connect the wireless network to Ethernet. [0003] A wireless controller (Access Contro...

AI Technical Summary

Problems solved by technology

[0006] Among them, the important purpose of the network planning software is to provide specific data and diagrams to guide the next more accurate network layout, so that each location has a fixed fingerprint structure; but because the actual environment varies greatly, each network layout requires A lot of work is done to simulate the environment, which is very cumbersome and the accuracy is not high; in addition, the collection of fingerprint vectors is very cumbersome and time-consuming, so the existing technical solution of using radio frequency fingerprint recognition technology to realize positioning is not easy to be promoted

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