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A method and system for obtaining a mobile subscriber identification code

A mobile user identification and target terminal technology, applied in the field of obtaining mobile user identification codes, can solve the problems of small search range and low efficiency, and achieve the effect of improving range and efficiency and wide applicability

Active Publication Date: 2019-05-07
GUANGZHOU HUIRUI SITONG INFORMATION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for obtaining mobile subscriber identification codes in order to solve the problems of small search range and low efficiency of the existing methods for obtaining mobile subscriber identification codes, which can simultaneously monitor the cells in multiple nearby location areas , which improves the scope of obtaining mobile subscriber identification codes, and can use the method of searching call information to quickly determine the target subscriber identification code, which improves the acquisition efficiency

Method used

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  • A method and system for obtaining a mobile subscriber identification code
  • A method and system for obtaining a mobile subscriber identification code
  • A method and system for obtaining a mobile subscriber identification code

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Experimental program
Comparison scheme
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Embodiment 1

[0067] Such as figure 1 As shown, the method for obtaining a mobile subscriber identification code in this embodiment includes the following steps:

[0068] S101. Collect and process air interface data, search and synchronize nearby cells;

[0069] S102. Using a calling terminal to call the target terminal, when the cell where the target terminal resides is within the range of the synchronized cell, the communication data between the target terminal and the base station can be monitored;

[0070] S103, while step S102 is carried out, monitor the physical channel of the synchronous cell, obtain the mobile subscriber identification code information from the physical channel, if the communication network is not encrypted, enter step S104; if the communication network is encrypted, enter step S105;

[0071] S104. If the relevant information of calling the target terminal by the calling terminal is found, determine that the obtained mobile subscriber identification code informatio...

Embodiment 2

[0074] Such as figure 2 Shown, the method for obtaining the mobile subscriber identification code of the present embodiment is applied in the GSM network, that is to say the method of the present embodiment is the method for obtaining the target subscriber identification code under the GSM system, comprising the following steps:

[0075] S201, GSM cell search and synchronization: collect the air interface data of each GSM frequency point, divide the collected data into multiple parts according to the total number of GSM frequency points, use multi-core processors for parallel processing, and each core processes a part of the cells within the frequency point range Search tasks to realize multi-cell search and synchronization;

[0076] S202, calling the target terminal: use a calling terminal to call the target terminal (by making a call or sending a short message), and when the cell where the target terminal resides is within the range of the synchronized cell in step S101, th...

Embodiment 3

[0086] Such as image 3 As shown, the method for obtaining the mobile subscriber identification code of the present embodiment is applied in the CDMA network, that is to say the method of the present embodiment is the method for obtaining the target subscriber identification code under the CDMA system, comprising the following steps:

[0087] S301, CDMA cell search and synchronization: search pilot channels, obtain the synchronization point of the strongest cell pilot channel, and obtain air interface data according to the synchronization point of the strongest cell pilot channel; perform phase calibration, demodulation, and deinterleaving on the air interface data , deduplication, and decoding to obtain the original data of the synchronization channel, and then analyze the message to obtain the synchronization information of the current strongest cell, and complete the synchronization of the current strongest cell, wherein the synchronization information includes the correspon...

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Abstract

The invention discloses a method and system for obtaining a mobile user identification code. The method includes: collecting and processing air interface data, searching and synchronizing nearby cells; using a calling terminal to call a target terminal, and when the target terminal is stationed When the remaining cell is within the scope of the synchronized cell, monitor the communication data between the target terminal and the base station; monitor the physical channel of the synchronized cell, and obtain the mobile user identification code information from the physical channel; when the communication network is not encrypted, and the searched When the calling terminal calls the relevant information of the target terminal, the mobile subscriber identification code of the target terminal is determined; when the communication network is encrypted, the mobile subscriber identification code information is counted to determine the mobile subscriber identification code of the target terminal. The invention can simultaneously monitor the cells in a plurality of nearby location areas, increases the range of obtaining mobile user identification codes, can quickly determine the target user identification code by using the method of searching call information, and improves the acquisition efficiency.

Description

technical field [0001] The invention relates to a method and system for acquiring mobile user identification codes. It belongs to the technical field of mobile communication. Background technique [0002] The mobile subscriber identity includes an International Mobile Subscriber Identity (IMSI for short) and a Temporary Mobile Subscriber Identity (TMSI for short). The IMSI is an identifier assigned to uniquely identify a mobile user globally, and the IMSI of each mobile user is fixed. TMSI is a temporary identifier assigned to mobile users by the core network during communication. The user's TMSI will be reassigned continuously, and the allocation cycle is configured by the core network. Most of the existing communication networks use the TMSI as an identifier for user communication. The TMSI will be updated periodically, so replacing the IMSI with the TMSI can enhance the confidentiality of the communication system and better protect the user's information security. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/18H04W12/06
CPCH04W8/18H04W12/06
Inventor 饶华铭邹敏赖少辉
Owner GUANGZHOU HUIRUI SITONG INFORMATION SCI & TECH CO LTD