摘要
采用不同的无线接入技术的多种网络的融合可以提高无线传输性能,为移动用户提供随时随地的网络连接。垂直切换是异构无线网络相互融合的基础,在垂直切换过程中,切换判定是一个非常重要的环节,直接决定切换性能。提出了一种基于用户属性与需求的切换算法,根据用户类型以及用户的QoS需求选择相应的切换策略,能有效地提高垂直切换性能。
A combination of diverse and complementary wireless access technologies will improve wireless transmission performance and provide mobile users with ubiquitous connectivity. Vertical handoff is the basic requirement for the integration of heterogeneous wireless networks. During the vertical handoff procedure, handoff decision is a crucial issue for an efficient mobility. In this paper, according to the QoS and type of users, a vertical handoff algorithm was proposed, and its performance was obviously improved.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2011年第6期868-870,882,共4页
Journal of Wuhan University of Technology：Information & Management Engineering
基金
国家自然科学基金资助项目(60633020)
关键词
垂直切换
异构无线网
切换时延
剩余带宽
vertical handoff
heterogeneous networks
handoff delay
rest bandwidth
