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网络协议的发展受到计算技术、通信技术和网络应用的共同驱使。近年来,计算技术的发展使体积小功耗低的膝上型电脑和掌上型电脑日益普遍,它们的功能越来越接近于台式机和工作站;通信技术的进步使得各种无线传输网络甚为流行,出现了PCS、PCN、UPT和UMTS等设备和服务;而应用也对“无论何
The development of network protocols is driven by computing technology, communication technology and network applications. In recent years, the development of computing technology has made the small-size laptops and PDAs with low power consumption increasingly common, and their functions are getting closer and closer to desktops and workstations. The advances in communication technology make the wireless transmission networks very much Popular, appeared PCS, PCN, UPT and UMTS and other equipment and services; and applications are also "no matter what