Terminal positioning method in wireless local area network, apparatus thereof and network equipment

Abstract

The invention discloses a terminal positioning method in a wireless local area network, an apparatus thereof and network equipment. The method comprises the following steps: according to RSSIs (Received Signal Strength Indicator) of signal sent by each AP (Access Point) and received by a terminal to be positioned, determining three APs which are corresponded with the three largest RSSIs, and determining the distances from the terminal to be positioned to the three APs; selecting three intersection points from the intersection points of the three circles which take the three APs as the centers of the circles and the distances from the terminal to be positioned to the three APs as the radius; according to the above three RSSIs, determining the corresponding weighting factors of the three intersection points; according to the pairwise distances among the three intersection points and the determined weighting factors, determining normalization length; and according to the determined weighting factors, the normalization length, and a distance from the selected first intersection point to the selected second intersection point in the three intersection points, determining the relative position of the selected first intersection point to the terminal to be positioned. The positioning method provided in the invention has the advantages of simplicity, small error of mobile terminal positioning and high precision.

Description

technical field [0001] The invention relates to the communication field, in particular to a terminal positioning method, device and network equipment in a wireless local area network. Background technique [0002] Wireless local area network (Wireless Local Area Network, WLAN) is a network for wireless communication in a local area using wireless media or media, and is a new technology developed at the end of the 20th century. WLAN has the characteristics of high-speed communication, convenient deployment, and flexible use. It has been widely used in different industries. It is mainly used in indoor places such as homes and offices, as well as public places such as airports, hotels, and campuses. The wireless positioning technology based on WLAN is developed under this background. The wireless positioning technology analyzes the characteristic information of the received radio signal in the wireless local area network, and calculates the location of the measured object accor...

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Problems solved by technology

[0004] Embodiments of the present invention provide a terminal positioning method, device, and network system in a wireless local area network, which are used to solve the problems existing in the prior art, such as the low accuracy of location information for locating terminals using empirical models, high requirements for databases storing empirical data, and The problem of large error and low accuracy of positioning terminal position information using theoretical models

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