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A method for locating AP in wireless local area network

A wireless local area network and regional technology, applied in the field of wireless communication networks, to achieve the effects of ensuring fairness, reducing data volume, and ensuring positioning accuracy

Inactive Publication Date: 2017-05-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to provide a method for locating an AP in a wireless local area network in view of the defects of the prior art, which is used to solve the problem that a large amount of data needs to be collected

Method used

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  • A method for locating AP in wireless local area network
  • A method for locating AP in wireless local area network
  • A method for locating AP in wireless local area network

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Embodiment Construction

[0051] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0052] The schematic diagram of signal collection for AP positioning in WLAN is as follows: figure 1 As shown, the car loaded with GPS module, electronic compass and directional antenna travels along the road, and collects the positions of measurement points, the direction of the antenna and the signal strength of each AP along the way. Taking advantage of the different characteristics of the gain in each direction of the directional antenna, the radiation pattern of the directional antenna is obtained through experiments. Directional gain, and then get the radiation pattern of the directional antenna. By partitioning the positioning area, a corresponding probability density table is established, and the signal strength collected by the directional antenna at each measurement point and angle is used to calculate the difference between the theoreti...

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Abstract

The invention discloses a method for locating an AP in a wireless local area network. The locating method can be applied to the wireless local area network, partition the positioning area, establish a corresponding probability density table, and utilize the gain in different directions of the directional antenna Different characteristics, collect the signal strength of each measurement point and each angle, calculate the probability of AP falling in each small area through the difference between the theoretical value of the signal strength and the measured value, add it to the probability density table, and finally according to the probability The density table calculates the location of the AP. The method disclosed by the invention reduces the amount of data collection, and only needs to use a directional antenna to collect data at a small number of points and angles to obtain relatively high positioning accuracy, effectively reducing the amount of data collection.

Description

technical field [0001] The invention discloses a method for locating an AP in a wireless local area network, and relates to the technical field of wireless communication networks. Background technique [0002] The maturity and development of wireless communication technology has led to the emergence of many new wireless services, the most important of which is wireless location service. Currently the most widely used is the Global Positioning System (GPS, Global Positioning System), but it cannot work accurately in urban blocks or buildings full of tall buildings, so a series of ground wireless positioning systems have emerged, such as based on infrared rays, ultrasonic waves, Positioning technologies such as Bluetooth, radio frequency tags, ultra-wideband, wireless sensor networks, and Wireless Local Area Networks (WLAN, Wireless Local Area Network), among which, with the rapid development and widespread deployment of wireless local area networks, positioning technology bas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
Inventor 陈兵杨小玲钱红燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS