Positioning method and system in predetermined space

Abstract

The invention provides a positioning method and system in predetermined space. The method comprises: a signal transmitting unit is installed at fixed equipment or a fixed position in predetermined space and transmits overall map layout information of the predetermined space as well as relative positioning information of the fixed equipment or fixed position in the predetermined space; when a mobile terminal roams at the fixed equipment or fixed position, the relative positioning information and overall map layout information that are transmitted by the signal transmitting unit are received; the mobile terminal carries out relative positioning in the predetermined space and/or calculates a path arriving at a point of interest in the determined space based on the relative positioning information and overall map layout information. With the method and system, precise positioning can be realized well at an underground parking lot, a building, and a lobby at an airport, and other places where the GPS can not carry out positioning precisely. Moreover, even positioning at different floors can be realized accurately and two-dimensional and three-dimensional maps can be sent to the mobile terminal.

Description

technical field [0001] The embodiments of the present invention relate to the field of wireless communication technologies, and more particularly, to a positioning method and system in a predetermined space. Background technique [0002] With the rapid increase of data services and multimedia services, people's demand for positioning and navigation is increasing, especially in complex indoor environments, such as buildings, airport halls, exhibition halls, warehouses, supermarkets, libraries, underground parking lots, mines, etc. In the environment, it is often necessary to determine the location information of the mobile terminal or its owner, facilities and items indoors. However, due to the limitation of positioning time, positioning accuracy and complex indoor environment, the relatively perfect positioning technology cannot be used well at present. [0003] In addition, if there are factories, companies, communities, buildings, etc. with multiple factories in a small o...

AI Technical Summary

Problems solved by technology

The above various positioning technologies have their own advantages and disadvantages, but it does not mean that these technologies should be fully used because of their advantages or abandoned because of their disadvantages

[0006] No matter what kind of positioning means in the prior art, it is difficult to maintain the accuracy of positioning between indoor floors, and how to maintain the convenience of use and low cost at the same time, there are more or less defects

[0007] At present, GPS and other methods are basically used for small-scale outdoor location information, but GPS cannot accurately locate a specific building. Some buildings can be located by GPS, but specific information about buildings, such as building entrances, exits, building The internal information of objects and the distribution of buildings cannot be obtained

GPS updates the building information very slowly, and the cost is very high. Shopping malls, buildings or factories cannot update the information in time.

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