基于信任域的环形网络介质访问时延控制仿真  

Simulation of Ring Network Media Access Delay Control Based on Trust Domain

作　　者：常国锋[1] CHANG Guo-feng(College of Computer and Information Engineering,Xinxiang College,Xinxiang Henan 453003,China)

机构地区：[1]新乡学院计算机与信息工程学院,河南新乡453003

出　　处：《计算机仿真》2020年第3期349-353,共5页Computer Simulation

摘　　要：针对当前网络时延控制相关方法存在控制效果不理想、网络负载均衡性能较差的问题,提出基于信任域的环形网络介质访问时延控制方法。基于OpenFlow引入时间戳对网络介质访问时延进行测量,将获取时间戳由控制器转换至OpenFlow交换机,通过控制器动态获取随机两个交换机间存在的多条路径,仅需传输一个探测分组即可得到多条路径中的时延。依据时延测量结果,以信任域为根本,将传染病目标函数和反馈路径法融合,利用在同一个信任域组范围判断数据调度的目标构建数据共享组,即数据调度方案。控制在传染病目标函数中任意选取的目标节点数目,以降低数据冗余率与信道占用率,从而降低访问时延。仿真结果显示,与传统方法相比,所提方法时延更低,且网络负载均衡度更高。At present,the related methods of network delay control lead to poor control effect and network load balancing performance.In this article,a method to control the ring network medium access delay based on trust domain was proposed.Based on OpenFlow,the timestamp was used to calculate the access delay of network medium,and then the timestamp was converted from the controller to OpenFlow exchange board.Dynamically,multiple paths between the two switches were obtained by the controller.Only transmitting one probe packet could get the delay in multiple paths.According to the delay measurement results,the infectious disease objective function and the feedback path method were merged based on the trust domain.In addition,the same trust domain group was used to judge the goal of data scheduling,and then the data sharing group was constructed.That was the data scheduling scheme.In order to reduce the data redundancy and channel occupancy rate,the number of arbitrarily selected target nodes in the infectious disease objective function was controlled and thus the access delay was reduced.Simulation results show that the proposed method has lower delay and higher network load balancing than the traditional methods.

关 键 词：信任域 环形网络 介质 访问时延 控制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]