基于SDN与NFV融合的UDN移动性管理算法  

Ultra-dense Network Mobility Management Algorithm based on SDN and NFV Combination

作　　者：谢妍辉 赵夙[1] 朱晓荣[1] XIE Yan-hui;ZHAO Su;ZHU Xiao-rong(College of Telecommunications&Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院,南京210003

出　　处：《光通信研究》2020年第4期68-73,共6页Study on Optical Communications

基　　金：国家科技重大专项基金资助项目(2017ZX03001008);江苏省高校自然科学研究重大项目基金资助项目(16KJA510005)。

摘　　要：针对超密集网络(UDN)下传统切换流程的信令交互过多造成切换总时延的增加,导致用户体验质量下降的问题,文章提出了基于软件定义网络(SDN)和网络功能虚拟化(NFV)融合的超密集网络移动性管理算法,该算法给出了将SDN与NFV相结合的适应超密集网络的网络架构模型,在此基础上提出了优化的切换信令流程,并建立数学模型,进行性能分析。仿真结果表明,相较于传统算法,该算法可以减少切换总时延。The excessive signaling delay of the traditional handover process in Ultra-Dense Network(UDN) leads to the increase of the total delay of the handover, which results in the degradation of user experience quality. This paper proposes an ultra-dense network mobility management algorithm based on the combination of Software Defined Networking(SDN) and Network Function Virtualization(NFV). The algorithm presents a network architecture model that combines SDN and NFV, which adapts to ultra-dense networks. Based on this, an optimized handover signaling process is proposed and a mathematical model is built for performance analysis. The simulation results show that compared with the traditional algorithm, the algorithm can reduce the total delay of handover.

关 键 词：超密集网络 切换时延 信令 软件定义网络 网络功能虚拟化 移动性管理 

分 类 号：TN915.81[电子电信—通信与信息系统]