First, the related concepts of DVE are presented, and DVE's network request and system structure are analyzed.
首先，介绍了DVE系统的相关概念，并分析了DVE系统的网络需求和体系结构。
Secondly, fundamental 3g technologies, concepts, structure of 3g network and billing system are presented, which are the basis of subsystem design.
第二部分，介绍了3 G技术的基本概念和基本常识，网络结构和计费组件构成。
Concepts consist of a complex network by the structure and semantic impacting.
概念与概念之间通过结构关系、语义关系而构成一个复杂的概念网络。
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