异构无线网络垂直切换技术研究

Research on Vertical Handoff Technology for Heterogeneous Wireless Network

随着计算机技术的发展以及人类对移动通信需求的不断增加,出现了多种无线接入技术。下一代异构无线网络成为研究的热点,而切换管理是下一代异构无线网络中的关键技术。研究了在协议栈各层实现垂直切换技术的方法,阐述了这些技术的核心思想,并分析讨论了各种技术的优缺点,便于人们较为容易地找到一种适合于特定问题的切换技术。介绍了基于跨层设计思想的切换技术。针对未来无线异构网络的特性,提出了垂直切换技术还需解决的一些问题。

With the development of computer technology and the increasing demand for mobile communications,various wireless networks join the family of communication.The next generation heterogeneous wireless network becomes a research hotspot and handoff management is the key technology in the next generation heterogeneous wireless network.Studies the existing vertical handoff protocols and describes the main idea of these techniques.It also discusses the advantages and disadvantages of these techniques,so a handoff protocol for the particular problem is easy to find out.Furthermore,it introduces some vertical handoff technologies based on the idea of cross-layer design.In the end,future trend of research is pointed out.