作为综合多媒体功能的基础结构，大规模移动通信网（ＩＭＮ：智能移动通信网）的发展，对于正朝着“个人化”、“智能化”和“多媒体”方向发展的未来移动通信业务是必不可少的。本文讨论移动通信的目标和目前正使用的ＰＤＣ网络（个人数字蜂窝区网）的技术概况。另外，将对移动通信技术的未来前景展开讨论，重点是对通用移动性的支持、网络结构（包括移动通信平台）以及在传输和接续系统中的多媒体技术。 As an infrastructure of integrated multimedia functions, the development of large-scale mobile communication network (IMN: Intelligent Mobile Communication Network) is bound to be the future mobile communication service that is moving toward “personalization”, “intelligence” and “multimedia” Essential. This article discusses the objectives of mobile communications and the technical overview of the PDC network (Personal Digital Cellular Network) currently being used. In addition, the future of mobile communications technology will be discussed, focusing on general mobility support, network architecture (including mobile communications platforms), and multimedia technologies in transmission and connectivity systems.