考虑负载均衡与传输速率的异构网络接入控制  

Access control of heterogeneous networks considering load balance and transmission rate

作　　者：刘丽娟 刘定一 陈松楠 LIU Li-juan;LIU Ding-yi;CHEN Song-nan(School of Information Engineering,Xinyang Agriculture and Forestry University,Xinyang 464000,China;Department of Network Security,Henan Police College,Zhengzhou 450046,China;School of Technology,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]信阳农林学院信息工程学院,河南信阳464000 [2]河南警察学院网络安全系,河南郑州450046 [3]北京林业大学工学院,北京100083

出　　处：《计算机工程与设计》2021年第6期1535-1541,共7页Computer Engineering and Design

基　　金：国家自然科学基金项目(31570713)。

摘　　要：针对异构无线网络中存在的负载不平衡和传输速率受限的问题,采用改进分解的多目标进化算法(MOEA/D)对目标函数求解,提出一种改进的业务接入控制优化方法。建立异构网络模型,构造双曲线聚合函数,通过控制权重向量与坐标轴的距离,调整个体的支配范围,根据适应度的变化对邻域值大小和变异概率进行自适应调节,提高算法的收敛性、多样性和全局搜索能力。实验结果表明,改进算法应用在异构无线网络的业务接入控制中能够获得更大的系统传输速率,更好地保证网络间的负载平衡,优于其它两种比较算法,使网络资源得到更优的配置。Aiming at the problems of load imbalance and limited transmission rate in heterogeneous wireless networks,an improved service access control optimization method was proposed using the improved decomposition multi-objective evolutionary algorithm(MOEA/D)to solve the objective functions.The heterogeneous network model was established.A hyperbolic aggregate function was constructed,and the dominating scope of the individual was adjusted by controlling the distance between the weight vector and the coordinate axis.The neighborhood value and mutation probability were adjusted adaptively according to the change of fitness,which improved the convergence,diversity and global search ability of algorithm.Experimental results show that the improved algorithm applied in the service access control of heterogeneous wireless networks can obtain higher system transmission rate and better load balance.It is better than the other two comparison algorithms,making the network resources get better allocation.

关 键 词：异构网络 多目标优化 负载平衡 接入控制 双曲线聚合函数 自适应变异概率 自适应邻域 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]