Method, device and system for fixing position of mobile terminal

Abstract

The invention discloses a method for fixing the position of a mobile terminal. The method comprises the following steps: modulating carrier signals by using codes specific to an acoustic wave signal source device; emitting modulated acoustic wave signals at a specific frequency by using the acoustic wave signal source device; receiving the acoustic wave signals by using the mobile terminal; demodulating the received acoustic wave signals so as to obtain codes specific to the acoustic wave signal source device; and based on correspondence between the codes and position of the acoustic wave signal source device, fixing the position of the mobile terminal. The invention also relates to an acoustic wave signal source device for assisting the fixing of the position of a mobile terminal, a corresponding mobile terminal and a system formed by the acoustic wave signal source device and the mobile terminal. By using the method and system disclosed by the invention, acoustic wave can be used as a carrier of information required in the fixing of position of a mobile terminal, therefore the position of the mobile terminal can be fixed in the fields in which other positioning techniques can not be used.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a positioning technology for determining the position of a mobile terminal by using sound waves. Background technique [0002] As mobile terminals are widely used, technologies and services for positioning mobile terminals are increasingly required and developed. For example, family members want to locate elderly mobile terminal users who go out alone so as to provide timely assistance in safety and health; enterprises hope to locate employee mobile terminal users for proper and efficient management at any time; fleets hope to locate driver mobile terminal users Positioning for reasonable and economical scheduling at any time, etc., are typical application scenarios of mobile terminal positioning services. [0003] Current mobile terminal positioning technologies mainly include: positioning based on GPS (Global Positioning System), positioning based on base stations of mobile...

AI Technical Summary

Problems solved by technology

This technology can be used for indoor short-distance positioning. The advantage is that it is easy to find the mobile terminal and the signal transmission is not affected by the line of sight. The disadvantage is that the current Bluetooth devices and equipment are expensive, and it is not cost-effective to use it to locate the mobile terminal.

Other technologies that can be applied to mobile terminals for indoor short-distance positioning include positioning based on WiFi hotspots. Like Bluetooth positioning technology, WiFi hotspot positioning technology faces the shortcomings of low hardware support rate and narrow application range.

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