CN101808316A

CN101808316A - Positioning method based on WLAN

Info

Publication number: CN101808316A
Application number: CN 201010146626
Authority: CN
Inventors: 曹鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-14
Filing date: 2010-04-14
Publication date: 2010-08-18

Abstract

The invention relates to a positioning method based on a WLAN. Enough wireless routers are installed in a WLAN network, each wireless router is distributed to an independent fixed IP address by connecting the wireless routers with an access controller, and then the IP address of each wireless router is made to correspond to the geographical coordinates of the wireless router. The access controller is connected with a position server, a fixed domain name is used as the index of the position server, and the domain name can be analyzed in the range of the WLAN. End client software in the WLAN can report its own IP address after being connected with the position server, a data server analyzes which wireless router covers the address of the client based on the address of the client, and the geographic position of the wireless router is determined to realize the positioning of the client in the WLAN. The invention provides the positioning service to the wide-coverage WLAN network system, and has the advantages of low cost of hardware facilities, simple operation and good positioning effect.

Description

Localization method based on WLAN

Technical field

The present invention relates to the method by the wireless signal location, specifically a kind of localization method based on WLAN belongs to wireless IP data communications field.

Background technology

Along with the promotion and application of WLAN technology, the covering that the WLAN signal has been set up in increasing city and area, a kind of low-cost solution that provides public's radio data network to cover with formedness price ratio is provided WLAN.Because the original intention of WLAN correlation technique standard design is a data communication network but not fixer network, so the WLAN technology does not provide perfect positioning service ability.This provides the application of LBS (Location Based Service, location-based service) to become a relatively thing of difficulty for hope in the zone that WLAN covers.

Summary of the invention

The object of the invention just is to provide a kind of localization method based on WLAN that is easy to realize, for wide-coverage WLAN network system provides positioning service, this method is simple, and required hardware facility cost is low, and good positioning effect.

Realize that the technical scheme that the object of the invention adopts is: a kind of localization method based on WLAN may further comprise the steps:

(1) sets up satisfactory wide-coverage WLAN network;

(2) wireless router is installed in wlan network, is covered all wlan networks until the range of signal of wireless router;

(3), realize management and the control of access controller to wireless router by wireless router is connected with access controller;

(4) each wireless router distributes the IP address of independent stationary;

(5) with the geographical position coordinatesization at each wireless router place, it is the geographical coordinate of dividing each wireless router in the wlan network, and being mapped as the scope that each wireless router signal covers, the IP address of each wireless router i.e. geographical coordinate with this wireless router is corresponding;

(6) be connected to location server on the access controller, as its index, and domain name can be resolved in the WLAN scope with a fixed domain name;

(7) terminal PC/notebook in the WLAN is connected the IP address of back report oneself with location server by correspondent customer terminal software, data server goes out it in the coverage of which wireless router by the address resolution of client, will be to the location of client in WLAN thereby realize by the geographical position of determining this wireless router.

Above-mentioned each wireless router distributes the IP address of independent stationary, for example be assigned as a Class C IP address, and each wireless router is distributed to the Class C IP address of client terminal PC/ notebook correspondence in its signal cover by DHCP.

Client software client on terminal PC/notebook in the above-mentioned WLAN uses the UUID technique computes of COM to go out a unique identifier by correspondent customer terminal software, and preserve, when causing this yard disappearance, rerun owing to reasons such as software reinstallations.Client application is connected the IP address and the default gateway of back report oneself with location server, and this identification code reported location server, service software program in the location server goes out it in the coverage of which wireless router by the address resolution of client, will be to the location of client in WLAN thereby realize by the geographical position of determining this wireless router.Service end writes down and index the change in location of each UUID, forms the information record of client shift in position in the overlay area, so that client is quoted when needing.

The inventive method is simple, simple to operate, realize that the required hardware facility wireless router of this method, access controller and location server are common network hardware equipment, it is with low cost, being convenient to increases location service function on existing wlan network basis, and need not existing network is changed.It is relevant with situation about covering that its positioning accuracy is arranged net with WLAN, can locate the zone of hundreds of meters scopes.Be compared to the running fix of GPS, the inventive method need not the GPS terminal equipment, and the terminal of using wlan network is not had hsrdware requirements, only can use location service function by software.And the inventive method exploitativeness is strong, can realize having the transformation of wlan network now in short-term.The compare location technology of GSM network has advantage with low cost.

Embodiment

The present invention is further illustrated below in conjunction with detailed embodiment:

(1) locating area is installed wireless router in WLAN, range of signal until wireless router covers locating area, the coverage ability that possesses according to wireless router self, determine the quantity of the required router of locating area in the WLAN, every nook and cranny in locating area has the signal of wireless route, as in the airport, arranging 100 wireless routers, realize of the fully covering of its signal to the airport.

(2), realize management and the control of access controller to wireless router by wireless router is connected with access controller.Realization is as follows to the step of wireless router control:

Whether (2-1) controlled wireless router inspection has disposed vpn/ access controller address information, if dispose, then uses default fixed ip address, initiates and sets up vpn to access controller and connect, otherwise directly carried out for the 3rd step;

(2-2) determine controller IP address after, controlled wireless router use ICP/IP protocol is set up a TCP with access controller and is connected as management channels, and overlap privately owned intercommunication primitive by one and carry out session, realize authentication and join the wireless router group that access controller is administered;

(2-3) wireless router of finishing authentication verification starts the wireless progress of work and keeps and being connected of access controller, and receives the supervisory instruction of access controller, realizes control and the management of access controller to wireless router.

(3) each wireless router distributes the IP address of independent stationary, each wireless router distributes the Class C IP address of independent stationary, and each wireless router distributes corresponding C class address by DHCP, the IP address that is 100 wireless routers in the airport is 192.168.1.x---192.168.100.x, and each wireless router distributes corresponding C class address by DHCP, is that the wireless router of 192.168.1.x can distribute 192.168.1.2 by DHCP as IP---192.168.1.254.Wireless router self address is 192.168.1.1.

(4) with the geographical position coordinatesization at each wireless router place, promptly in locating area, divide the geographical coordinate of each wireless router, and be mapped as the scope that each wireless router signal covers, the IP address of each wireless router i.e. geographical coordinate with this wireless router is corresponding, is corresponding certain the piece zone A of 192.168.1.1 as the IP address.

(5) be connected to location server on the access controller, as its index, and domain name can be resolved in the WLAN scope with a fixed domain name;

(6) by forcing the portal authentication to download a network plug-in, the on-net location of this plug-in unit location aware server requires user's download to the client of WLAN when network portal authenticates when online.Each client plug-in is downloaded unique identifier of UUID technique computes that COM is used in the back, and this identification code reported location server, and client is connected the IP address and the default gateway of back report oneself with location server, client is used unique identifier of UUID technique computes of COM by correspondent customer terminal software, and this identification code reported location server, and by IP address and the default gateway of client software to location server report oneself, as the IP address is 192.168.1.10, and gateway is 192.168.1.1.Data server goes out it in the coverage of which wireless router by this IP address resolution, thereby by the geographical position of determining this wireless router and the location of realization client in WLAN, zone that this client's UUID is registered in this wireless router place.

Behind the inventive method realization location, when software application needs use location information, use the coding initiation position server of UUID to put inquiry, location server can be replied by predefined intercommunication primitive, for example Map Services.The webpage of an area map can be provided among the WLAN, when using UUID and IP address/gateway information webpage opened in transmission as parameter, Map Services is inquired about the position of this gateway router to location server, resolve to the coverage area information of this router, thereby client is presented at the zone of client position on the map.In like manner, service such as similar peripheral information also can be obtained by the inventive method.As retrieve the shop or the sight spot information of own periphery---the related information by the overlay area can retrieve client position periphery information such as which shop, sight spot.

Claims

1. localization method based on WLAN is characterized in that may further comprise the steps:

(1) sets up satisfactory wide-coverage WLAN network;

(4) each wireless router distributes the IP address of independent stationary;

(7) terminal PC/notebook in the WLAN uses the UUID technique computes of COM to go out a unique identifier by correspondent customer terminal software, the IP address and the default gateway that are connected back report oneself with location server, and this identification code reported location server, location server goes out it in the coverage of which wireless router with the IP address resolution of client, will be to the location of client in WLAN thereby realize by the geographical position of determining this wireless router.