SDN中一种基于网络的分布式移动管理方案

A Network-Based Distributed Mobility Management under SDN

传统的分布式移动管理方案虽然能解决集中式移动管理方案的不足,但在移动结点发生切换时,仍然需要建立隧道,从而增加了网络开销.为了解决这一问题,利用软件定义网络(SDN)中控制平面与转发平面相分离的特点,在SDN架构下提出一种新的基于网络的分布式移动管理方案(NNDMM),该方案能充分发挥SDN的优点,同时不会给控制器造成额外的压力.建模分析表明:相对于传统的分布式移动管理方案,无论在信令费用上,还是包递送费用上,NNDMM方案都有明显的优势.

The traditional distributed mobility management scheme can solve the problem of the centralized mobility management scheme,but when the mobile node switches a tunnel still needs to be established,thereby increasing the network overhead.To solve the problem,a new network-based distributed mobility management(NNDMM)scheme under the software-defined network(SDN)architecture is proposed,taking advantage of the separation of the control plane and the forwarding plane in SDN.The proposed NNDMM scheme makes full use of SDN without putting extra overhead on the controller.The analysis shows that it has obvious advantages over the traditional distributed mobility management scheme in terms of signaling cost and packet delivery cost.