NAPT-Based Mobility Service for Software Defined Networks

Abstract

SUMMARYFor IP-based mobile networks, efficient mobility management is vital to provision seamless online service. IP address starvation and scalability issue constrain the wide deployment of existing mobility schemes, such as Mobile IP, Proxy Mobile IP, and their derivations. Most of the studies focus on the scenario of mobility among public networks. However, most of current networks, such as home networks, sensor networks, and enterprise networks, are deployed with private networks hard to apply mobility solutions. With the rapid development, Software Defined Networking (SDN) offers the opportunity of innovation to support mobility in private network schemes. In this paper, a novel mobility management scheme is presented to support mobile node moving from public network to private network in a seamless handover procedure. The centralized control manner and flexible flow management in SDN are utilized to provide network-based mobility support with better QoS guarantee. Benefiting from SDN/OpenFlow technology, complex handover process is simplified with fewer message exchanges. Furthermore, handover efficiency can be improved in terms of delay and overhead reduction, scalability, and security. Analytical analysis and implementation results showed a better performance than mobile IP in terms of latency and throughput variation. key words: software defined networking (SDN), mobility management, private networks, network address port translation (NAPT)

SDN-FHOR-DMM: a software defined network (SDN)-based fast handover with the optimal routing control method for distributed mobility management (DMM)

“…The main concerns are that SDN can (1) offer a programmable network organization and reconfigurable network interface, (2) simplify network mobility management by decoupling network control logic from the underlined hardware, and (3) allow the seamless handover for the network operators to proficiently correct and update/upgrade network procedures to meet forthcoming objectives of the mobile Internet services. There were several researches that have deployed MIPv6 and PMIPv6 mobility management using the SDN paradigm to improve handover performance and reduce the network resource consumption [17,18]. These works are created on the advantage of the separation of control and data plane of SDN, i.e., the SDN Controller (1) handles the allocations of the Home Network Prefix (HNP) to MNs and the same HNP is maintained when MN is present in the SDN domain and (2) creates the mobility management events of MN by gathering all of the required MN's information.…”