Cellular mobile communication network and packet data network protection method

Abstract

The invention provides a cellular mobile communication network and packet data network protection method. The method includes the following steps that: a boundary line is defined between a cellular mobile communication network and a packet data network; a security boundary is defined inside a dedicated terminal in the cellular mobile communication network; the count value and enhanced count valueof a packet data network convergence protocol data packet are acquired, wherein the enhanced count value is logically a high bit of the count value, after the count value reaches a predetermined threshold value, the enhanced count value is increased by a predetermined numerical value; and security processing is performed on the above transmitted packet data network convergence protocol data packetaccording to the count value, the enhanced count value, and a security protection key. Compared with a network layer security protocol, the data link layer security protocol used in the method of thepresent invention has the advantages of simplicity, convenience in implementation, low computation and protocol overhead, and can better meet high security requirements especially in the field of information security.

Description

technical field [0001] The invention relates to a method for protecting a packet data network of a cellular mobile communication network, which belongs to the field of mobile communication. Background technique [0002] In the prior art, as the cellular mobile communication network transitions from a voice-centric network to a data-centric network, the cellular mobile communication network constitutes the physical layer and data link layer of the computer network, and the cellular mobile communication network is no longer directly Provide specific services to users. [0003] User data is still transmitted in clear text in the core network of the mobile communication network, and the terminal authentication and password protection strength of the cellular mobile communication network cannot meet the requirements of users with high security levels. In particular, the equipment of the cellular mobile communication network has not passed a high-level security assurance assessme...

AI Technical Summary

Problems solved by technology

[0003] User data is still transmitted in clear text in the core network of the mobile communication network, and the terminal authentication and password protection strength of the cellular mobile communication network cannot meet the requirements of users with high security levels

In particular, the equipment of the cellular mobile communication network has not undergone a high-level security assurance assessment, and there is no sufficient and reliable evidence to prove whether the security functions of these equipment are implemented correctly

Therefore, for a dedicated computer network with a high security level, neither the security protocol at the computer network layer nor the security measures of the mobile communication network can meet the user's security requirements.