160. A DELAY MODELLING IN SDN-BASED MOBILE NETWORKS WITH SINGLE CONTROLLER
Keywords: queueing model, SDN, performance evaluation, mobile networks, mobility management
AbstractThe Software-Defined Networking (SDN) is a concept that is already widely used in data centers and mobile core networks to provide network-wide abstraction, open interfaces, programmability, and hiding of network complexities. In mobile networks, a traditional challenge is the mobility management and providing the users a seam- less experience with minimal interruption when performing a handover. In this work we are interested in performance analysis of OpenFlow-based SDN mobile networks by using analytical modelling based on queueing theory. We ana- lyze the packet sojourn time of both the switch and the controller and the impact of key factors, such as the number of switches, probability of packet-in messages, arrival rate, and total system throughput. Our findings can be used to quantify the handover delay due to OF-signaling messages that the Mobile Node (MN) experiences when performing a “hard” handover.