earticle

영어

There have been quite a number of approaches for mobility management in IP networks to provide service continuity to mobile nodes traveling across heterogeneous wireless networks. One of the reasons making those existing approaches difficult to be applied into real network environment is that they commonly require significant functional updates on network devices including routers, control servers and mobile terminals. The complexity to manage huge mobility information and much overhead to exchange mobility control messages also became obstacles to deploy those approaches. Recently, software defined networking is being considered as a dynamic and scalable architecture which can resolve those limitations by decoupling network control and data forwarding functions, and enabling the network control to become directly programmable in a centralized manner. In this paper, we address some issues and possible solutions to introduce a well-known IP mobility management approach, PMIPv6, into software defined networks. A feasible MM framework is also proposed with consideration of efficiently utilizing the features and advantages of the software defined networking architecture.