SDN-Based Fast Handover Approach to Improve the QoS of Video Streaming over Wi-Fi Networks

In this paper, we have proposed a design and implementation of software-defined network-based fast handover approach to improve the QoS for video streaming over Wi-Fi networks. During the handover of mobile stations, two major bottleneck are experienced towards providing fast transition from one access point to another. These bottlenecks are scan latency and authentication latency. These two add up and result in a high handover latency which is undesired for video streaming applications. Using our SDN-based approach has been able to drastically reduce this latency which resulted in better QoS for video streaming application over Wi-Fi networks. We have implemented our SDN-based approach using Mininet emulator and results suggest the applicability of our approach.