基于决策概率的接入网选择  

Arbitration Probability-based Access Selection Algorithm

作　　者：陈杰[1] 余凯[1] 张平[1] 

机构地区：[1]北京邮电大学无线新技术实验室北京100876

出　　处：《现代电子技术》2008年第9期31-34,共4页Modern Electronics Technique

摘　　要：为了指导移动用户在B3G的异构系统中选择一个最优的无线网络接入,提出了基于决策概率的接入网络选择算法。该决策概率综合考虑了网络服务质量(QoS)的满意度、网络的收费价格和用户与网络间的相对链路质量。在NS2仿真平台下,搭建了UMTS和802.11e的异构仿真环境并模拟了用户依据决策概率所进行的网络选择行为。仿真表明,通过所提出的算法,终端能够选择到满意的网络进行接入。In order to direct subscribers to select the most suitable radio access network in B3G heterogeneous network environment,a network selection algorithm based on arbitration probability is proposed. Arbitration probability takes network provided Quality of Service（QoS） satisfaction level, monetary cost, and relative link quality into account. The heterogeneous network environment consisting of UMTS and 802.11e is established under NS2 platform. Simulation results exhibit the be： havior of users＇ network selection. The simulation results show that terminals access the most satisfactory network based on the proposed access selection algorithm.

关 键 词：接入网选择 决策概率 异构网络 NS2仿真 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]