异构无线网络业务接入多目标优化控制算法  

Multi-objective Optimal Based Service Access Control Algorithm for Heterogeneous Wireless Networks

作　　者：盛洁[1] 马冬[1] 

机构地区：[1]苏州大学城市轨道交通学院,江苏苏州215021

出　　处：《电子学报》2016年第2期282-288,共7页Acta Electronica Sinica

基　　金：江苏省自然科学基金(No.BK20140359);江苏省高校自然科学研究面上项目(No.15KJB510027);苏州大学青年教师自然科学基金(No.SDY2014A09)

摘　　要：提出了一种应用于异构无线网络环境的基于多目标优化的业务接入控制算法.该算法以业务占用总资源最少、业务阻塞率最低和网络间负载最均衡为目标建立了多目标优化控制模型,采用高斯和戒上型组合隶属函数将多目标问题模糊化,利用最大化满意度指标法将多目标问题转化为单目标问题,并通过遗传算法求得最优解.仿真结果表明,所提算法能在兼顾各网络资源高效利用的同时,保证业务接入的可靠性,并相对于参考算法有效降低了业务阻塞率.Based on multi-objective optimization,a service access control algorithm is proposed,which can be applied to the environment of heterogeneous wireless networks. An optimized multi-objective control model adopting improved membership function is designed,in which the minimum total occupied resources of distribution services,the minimum service blocking rate and the maximum network load balancing degree of each candidate network are taken as objective functions. The objective membership function,composed of gaussian and upper limit functions is used to obscure each objective function,then the fuzzy satisfaction maximum-minimum technique is adopted to reformulated this multi-objective optimization problem into a single objective nonlinear programming problem,and the optimal service access strategy is obtained by genetic algorithm. Simulation results showthat the algorithm can guarantee the system resource utilization and the service access reliability,as well as decrease the system call blocking probability compared to the reference algorithms.

关 键 词：异构无线网络 接入控制 负载均衡 多目标优化控制 

分 类 号：TN929.5[电子电信—通信与信息系统]