基于SDN/NFV的电力物联网时延敏感业务编排方法  

SDN/NFV-based Delay-sensitive Service Orchestration Method in Electric IoT

作　　者：王雅倩 陈心怡 曲睿 周振宇[1] WANG Yaqian;CHEN Xinyi;QU Rui;ZHOU Zhenyu(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《华北电力大学学报（自然科学版）》2023年第1期84-91,共8页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(61971189).

摘　　要：软件定义网络(software-defined networking,SDN)和网络功能虚拟化(network function virtualization,NFV)为电力物联网业务编排提供了实现方法。针对电力物联网时延敏感业务编排问题,首先,提出基于SDN/NFV的电力物联网业务编排架构,满足定制化需求。然后,考虑多虚拟网络功能(virtual network function,VNF)嵌入、服务功能链(service function chain,SFC)有序性、以及电磁干扰影响,提出基于升价匹配的多阶段多对一VNF嵌入(pricing matching-based multi-phase many to one VNF embedding,PMVE)算法,在每个阶段实现不同SFC链上排序相同的VNF集合与物理节点集合间的匹配,从而最小化业务服务总时延。最后,通过算例验证了方法的可行性和有效性,仿真结果表明,相较于传统的双边匹配算法,所提算法可降低业务服务总时延29.9%、降低平均等待时延36.1%,保障电力物联网时延敏感业务需求。Software-defined networking(SDN)and network function virtualization(NFV)provide a way to realize service orchestration in electric internet of things(IoT).As for the problem of delay-sensitive service orchestration in electric IoT,firstly,an SDN/NFV-based service orchestration architecture of electric IoT was proposed to meet the customization requirements.Then,considering the embedding of multiple virtual network functions(VNFs),the ordering of service function chain(SFC),and the influence of electromagnetic interference,a pricing matching-based multi-phase many to one VNF embedding(PMVE)algorithm was proposed.Since the matching between the VNF set with the same sequence on different SFCs and the physical node set at each phase was realized,the total delay of service can be minimized.Finally,the feasibility and effectiveness of the proposed algorithm were validated through case studies.The simulation results show that compared with the traditional two-sided matching algorithm,PMVE can reduce the total delay of services by 29.9%,and the average waiting delay by 36.1%,so as to ensure the delay-sensitive service requirements in electric IoT.

关 键 词：网络功能虚拟化 软件定义网络 业务编排 VNF嵌入 匹配理论 

分 类 号：TN915.85[电子电信—通信与信息系统]