3G移动通信系统中的信息安全

With the continuous development of mobile communication technology, 3G system (the 3rd generation mobile communication system) is becoming more and more mature and has been put into business operation. As a communication network system used around the world, besides the traditional voice service, various of information services are provided in 3G system, including multi-media service, data service, e-business, e-trade, Internet, etc. In the 3G system, the security is particularly critical. The information security of 3G system is an important research topic at present. Information security is the basic safeguard for normal operation and management of the 3G system, which has a lot to do with the interest of customers, manufactures and ISPs. It will directly affect the utilization and popularization of 3G system. This paper focus on the security architecture, new security technologies and threats in 3G system, and a brief introduction on the 3G security policy is provided. At the same time, the security technologies and problems exited in after-3G systems are also introduced in this paper.