Dynamic detection and filtering method for invalid AP in WIFI indoor positioning system

An indoor positioning and dynamic detection technology, applied in the field of WIFI indoor positioning, can solve the problems of many invalid data, untimely response to positioning requests, and many invalid positioning messages, and achieve the effect of reducing storage pressure

Active Publication Date: 2017-01-25
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

[0005] The technology of the present invention solves the problem: overcoming the current problems of many invalid WIFI indoor positioning messages, large amount of invalid data stored, high calculation pressure of the positioning engine, and untimely response to positioning requests, and provides a dynamic monitoring system for invalid APs in the WI

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  • Dynamic detection and filtering method for invalid AP in WIFI indoor positioning system
  • Dynamic detection and filtering method for invalid AP in WIFI indoor positioning system
  • Dynamic detection and filtering method for invalid AP in WIFI indoor positioning system

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[0050] Such as figure 1 , 2 Shown as an example, the implementation steps of the present invention are described:

[0051] 1. If figure 1 As shown, the automatic screening program is started every day during the time period when indoor positioning needs are less, and the invalid device table and the trusted device table of the day are generated.

[0052] a. Automatically start the screening program at 2:00 a.m. every day, first initialize and store the number of data pieces of the unconnected system Map, Key is the MAC address parsed from the UDP message, and Value is the number of data pieces corresponding to the MAC address , initialize the MAC address table List of the connected system , which is used to store the MAC address confirmed to have connected to the system on that day, and then read in the UDP message of each record in turn and analyze the MAC address, whether it is connected (IsAssociated), RSSI strength, etc.;

[0053] b. Use the IsAssociated field to j...

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Abstract

The invention discloses a dynamic detection and filtering method for invalid AP in a WIFI indoor positioning system. The method comprises detection and filtering, wherein (1) Detection comprises the following specific steps of: receiving, storing and forwarding UDP message related to positioning information RSSI by a gateway part of a WIFI indoor positioning server, analyzing the UDP message on the same day at the time requiring less indoor positioning each day, taking a MAC address of wireless equipment as a unique identification, collecting the quantity of the positioning message of the same equipment and the connection condition of the wireless equipment and the AP, automatically generating an invalid AP table on the same day and dynamically updating the overall invalid AP according to certain strategy dynamics; (2) filtering comprises the following specific steps of: on the basis of the overall invalid AP table, filtering the UDP message of the invalid AP on the gateway part, screening the message used for positioning and sending to WIFI indoor positioning engine. According to the invention, the problems of much more invalid data stored by the original WIFI indoor positioning system and high calculating pressure of the positioning engine can be solved and the physical storage pressure and positioning of data and the calculating pressure based on the behavioral analysis of the position can be relieved.

Description

technical field [0001] The invention belongs to the field of WIFI indoor positioning, and more specifically relates to a dynamic detection and filtering method for invalid APs in a WIFI indoor positioning system. Background technique [0002] In recent years, with the increase of mobile devices and the rapid development of wireless positioning technology, Location Based Service (Location Based Service, LBS for short) is more and more closely related to people's work and life. The global positioning system can provide good positioning accuracy outdoors, but in cities with dense buildings, especially indoors, because satellite signals cannot penetrate buildings, the signals reaching indoors are limited and weak, resulting in inability to locate. The average person spends 80% of their time indoors, so "the last 100 meters of mobile Internet service" has become a hot research topic. Currently commonly used indoor positioning technologies include WIFI, Bluetooth, infrared, RFID,...

Claims

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Application Information

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IPC IPC(8): H04W24/04H04L12/26G06F17/30
CPCG06F16/16G06F16/215G06F16/22G06F16/23H04L43/0805H04L43/106H04W24/04
Inventor 诸彤宇郭之超盖群
Owner BEIHANG UNIV
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