A signaling analysis method for mobile terminals

Abstract

The invention provides a signaling analysis method for a mobile terminal to solve the problem of terminal information leakage. The mobile terminal receives the system message change instruction, the location area code (Tracking Area Code, TAC) in the system message changes, and records the TAC update time and times. The mobile terminal initiates an access request to the access device and starts a timer, and the terminal receives the identity request. Within the preset time of the timer, the terminal repeatedly receives the same signaling message, but does not receive the network acceptance message, and the TAC transmission of the access device changes. When the timer expires, the TAC update frequency is calculated. If the TAC update frequency exceeds the threshold, the terminal immediately disconnects from the access device to avoid information leakage. Otherwise, access to the network normally to perform data services. The method is simple and accurate, and ensures the security of the terminal without affecting normal services of the terminal.

Description

technical field [0001] The invention provides a signaling analysis method for a mobile terminal, which is mainly used to solve the problem of terminal information leakage. The mobile terminal only needs to analyze the signaling messages between the terminal and the access device to easily and quickly identify the illegal access device and ensure its own information security in the shortest possible time. Background technique [0002] With the popularization of 4G network, my country's three major operators have successively launched their own 4G Internet services, and continue to expand their coverage. Today, 4G networks have entered people's daily lives. Access multimedia, social networking, e-commerce and other data-intensive applications anytime, anywhere. User information security has become the primary issue that needs to be solved urgently. [0003] At present, there are endless ways to solve the information security of mobile terminals. At present, the main methods...

AI Technical Summary

Problems solved by technology

[0004] 1. After the mobile terminal accesses the 4G network and is redirected to the 2G network, and receives the spam message sent by the 2G network, the access device is an illegal device; this method needs to support two sets of 4G and 2G due to the redirection process. equipment, and it takes a long time for mobile terminals to detect illegal equipment;

[0005] 2. The mobile terminal judges that the access device is an illegal device by counting the update times of the location area and receiving spam messages. Some illegal devices are not necessarily used to send spam messages, so the reliability of this method is not high

This method requires the addition of additional information messages

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