用户动态接入下的多播业务链部署和调整方法  

Multicast Service Chain Deployment and Adjustment Method under User Dynamic Access

作　　者：孔紫璇 李航 向万[1,2,3] 陈亚文 郑伟 KONG Zixuan;LI Hang;XIANG Wan;CHEN Yawen;ZHENG Wei(School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China;Beijing Key Laboratory of Network System Architecture and Convergence,Beijing University of Posts and Telecommunications,Beijing100876,China;Beijing Laboratory of Advanced Information Networks,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学信息与通信工程学院,北京100876 [2]北京邮电大学网络体系构建与融合北京市重点实验室,北京100876 [3]北京邮电大学先进信息网络北京实验室,北京100876

出　　处：《北京邮电大学学报》2022年第6期53-59,共7页Journal of Beijing University of Posts and Telecommunications

基　　金：国家重点研发计划项目(2019YFB1803301);北京市自然科学基金项目(L202002);国家自然科学基金项目(62101067)。

摘　　要：在网络功能虚拟化架构中,可通过部署多播业务链的方式实现多播业务。用户动态接入多播业务时,原有的部署方案可能会造成网络资源的浪费,使整体部署方案处于次优的状态。为了高效地调整多播业务链部署方案,综合虚拟化网络功能的迁移和网络资源的时变性,以最小化网络成本为目标建立动态多播业务链部署-调整模型。针对此模型设计了一种启发式算法,仿真实验结果证明了用所提算法可使网络成本接近最优解。In network function virtualization, multicast services can be achieved by deploying multicast service function chains.When users dynamically access multicast services, the original deployment plan may cause network resources waste, which makes the overall deployment plan in a suboptimal state. In order to efficiently adjust the deployment plan, the dynamic multicast service chain deployment and adjustment model is established to minimize network costs, and the migration of virtual network functions and the time variability of network resources are comprehensively considered. A heuristic algorithm is further designed to solve the proposed model. The simulation results show that the algorithm can achieve near-optimal performance.

关 键 词：网络功能虚拟化 多播业务链 用户动态接入 启发式算法 

分 类 号：TP393.0[自动化与计算机技术—计算机应用技术]