一种基于多属性决策理论的改进垂直切换算法  

An improved vertical handoff algorithm based on multiple attribute decision making

作　　者：陶剑骅 武向农[1] 王露[1] 

机构地区：[1]上海师范大学信息与机电工程学院,上海200234

出　　处：《上海师范大学学报（自然科学版）》2016年第4期458-463,共6页Journal of Shanghai Normal University(Natural Sciences)

基　　金：上海市自然科学基金(13ZR1430400);上海市教育委员会科研创新项目(14YZ070)

摘　　要：提出一种基于多属性决策理论的垂直切换算法,并对异构无线网络的4类典型业务进行了仿真研究.该算法利用层次分析法设计双层层次结构,通过主客观权重相结合解决分配权重时过于主观的问题,同时结合利用逼近理想解法来解决网络排序异常的问题.仿真结果表明该算法能够自适应用户终端设备的移动速度,在保证4类典型业务的Qo S同时减少乒乓效应.In this paper we propose an vertical handoff algorithm based on multiple attributes decision making theory,and simulatie the four types of typical business of heterogeneous wireless network. The proposed algorithm use AHP to design two layers of structure, through the combination of subjective and objective weights in order to solving the problem about weights assigned too subjective. Then the proposed algorithm combines with TOPSIS to solve the problem when making decision only by a single TOPSIS, which may result in networks abnormal rank. The simulation results show that the improved algorithm can be adaptively fit the speed of user terminal. In the premise of guarantee QoS of four types of typical business,at the same time reduce the ping-pang effect.

关 键 词：异构网络 垂直切换 多属性决策 层次分析法 逼近理想解法 

分 类 号：TN929.5[电子电信—通信与信息系统]