网络层支持主机移动的研究

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

Research on Network Layer Host Mobility Support

The development of computing techniques and communication techniques and requirements of personal communication make mobile computing and wireless networks possible and indispensable. Novel network environment offers new challenges to traditional network protocols. Especially, as middle layer protocols in the network architecture,the network layer protocols cannot support host mobility because of the hierarchical addressing and routing mechanisms and static name and address binding.New functions and protocols must be added in order to support host mobility in the network layer. In this paper we summarize the impact of host mobility on network protocols ,the problems of traditional protocols to support host mobility ,the architecture and practical schemes to support host mobility in the network layer ,and the emphases ,current status and direction of network layer host mobility support.