基于模糊多目标决策的两跳中继蜂窝网络切换算法

Handoff algorithms in two-hop-relay cellular network based on fussy multiple object decision making

简要介绍了在集成两跳AdHoc和蜂窝网络的结构下,触发网络进行切换的一些因素和两种路由代理发现算法,并且提出了一种新的基于模糊多目标决策方法的切换决定算法。算法从层次分析和模糊综合评价理论的思想出发,结合用户、终端、业务和网络信息,对网络链路的性能进行综合评价,选择出最适合用户业务请求的路径。仿真显示在用户可感知业务QoS下降的情况下,算法可以通过增加QoS的权重而切换到更好的网络链路上,从而为用户提供了"总是最好连接"的服务。

This article firstly surveys some triggering factor for vertical handoff and two kind of proxy discovery and routing algorithms under the integrating two-hop Ad Hoc and cellular network architecture and proposes a novel handoff decision algorithms based on fuzzy multiple object decision making method.The idea of algorithms starts from Analytic Hierarchy Process （AHP）and fuzzy comprehensive evaluation theory,by combining with the information from user,mobile terminal,service and networks,can evaluate the performance of network links comprehensively and select the most appropriate one for requirement of user＇s services.Simulation results show when user perceives the degradation of services＇ QoS,this algorithms can make mobile node switch to a better network link by increasing the weight of QoS criteria.So it can provide ＂Always Best Connect＂ for user.