Dynamic Load Balancing of Local Mobility Anchors in Software Defined Networking based Proxy Mobile IPv6

Proxy Mobile IPv6 (PMIPv6) is an IP mobility protocol. In a PMIPv6 domain, local mobility anchor is involved in control as well as data communication. To ease the load on a mobility anchor and avoid single point of failure, the PMIPv6 standard provides the opportunity of having multiple mobility anchors. In this paper, we propose a Software Defined Networking (SDN) based solution to provide load balancing among mobility anchors, in a SDN based PMIPv6 domain. In the proposed solution, a mobility controller performs acts as a central control entity, and performs load monitoring on the mobility anchors. On detecting the load crossing over a threshold for a certain mobility anchor, the controller moves some traffic from highly loaded mobility anchor to relatively less loaded mobility anchor. Analytical model and primitive performance evaluation of the proposed solution is presented in this paper, which demonstrates 5% and 40% improvement in uplink and downlink traffic disruption periods, respectively