异构网络中基于用户需求的垂直切换算法  

A Vertical Handoff Algorithm Based on Requirement of Users in Heterogeneous Networks

作　　者：但峰[1] 黄传河[1] 杨淑娟[1] 何凯[1] 王小毛[1] 

机构地区：[1]武汉大学计算机学院,湖北武汉430072

出　　处：《武汉理工大学学报（信息与管理工程版）》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)

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.

关 键 词：垂直切换 异构无线网 切换时延 剩余带宽 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]