3G——3rd-generation,即第三代移动通信系统,是指支持高速数据传输的蜂窝移动通讯技术,这种技术集成了2G系统的优点,同时又针对3G系统的新特性,定义了更加完善的安全特征与鉴权服务。对于3G技术而言,系统安全是其正常运行和管理的基本保障,然而,由于3G系统本身的开放性和高速无线传输的特征,安全问题逐渐成为了整个移动通信系统的核心问题。 3G - 3rd-generation, the third generation mobile communication system, refers to a cellular mobile communication technology that supports high-speed data transmission. This technology integrates the advantages of 2G systems and at the same time defines more perfect features for the new features of 3G systems Security features and authentication services. For 3G technology, system security is the basic guarantee of its normal operation and management. However, due to the openness of 3G system itself and the characteristics of high-speed wireless transmission, security has gradually become the core issue of the entire mobile communication system.