Locating method and system for area in which mobile terminal is located

Abstract

The invention discloses a locating method and system for an area in which a mobile terminal is located and belongs to the field of mobile communication network testing. The principle is based on that paging signals sent by a base station in a mobile communication network are all in units of LAC areas, so that the area in which the target is located can be confirmed after finding the LAC area sent out by the paging signals of the target mobile terminal. In order to solve the problem that an IMSI of the paging signal is knowable but a content is unknowable owing to encryption, the method that regular group paging signals are autonomously sent to the target mobile terminal, and the target is confirmed by a monitoring device according to the sending law of the collected paging signals is adopted in the locating system for the area in which the mobile terminal is located. The locating method and system for the area in which the mobile terminal is located can be used for looking for the designated mobile terminal.

Description

technical field [0001] The invention relates to the field of testing of mobile communication networks. Background technique [0002] Regardless of 2G, 3G or 4G, the mobile communication system is a cellular network formed by cells covered by many base stations, and the coverage area of ​​each base station is limited. The mobile terminal is positioned within the cell area covered by a certain base station by using network management information. From an operator's point of view, it is very easy to implement. However, in order to avoid complicated business procedures with the operation and to avoid leakage of secrets, the criminal investigation department usually uses technical means independent of the operator to find the target mobile terminal. [0003] The positioning methods that have been successfully used include: ①Using the radio frequency power positioning of the mobile terminal, the target mobile terminal can be located independently of the operator within a very acc...

AI Technical Summary

Problems solved by technology

However, due to the limited radio frequency sensitivity of the monitoring equipment, the base station coverage cell where the monitored mobile terminal is located can only be located within a certain range (usually equivalent to the coverage area of ​​the base station)

If you only know where the target mobile terminal is in a certain city or don't know where it is at all, it is very difficult to find the target using traditional cell locators and precise locators without the help of operators

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