Dynamic Adaptive Streaming Over HTTP Using Scalable Video Coding with Multipath TCP in SDN

To cope up with increasing video traffic demands over the Internet, Dynamic Adaptive streaming over HTTP (DASH) is gradually being adopted. It provides a convenient approach to stream multimedia in an adaptive and dynamic way to heterogeneous end devices. But it has its disadvantages which include storage of multimedia content, congestion in the delivery network or access link due to sudden increase in the requests, end-to-end delay, inefficient network bandwidth utilization etc. These unfavorable circumstances limit the number of user requests and efficient utilization of network bandwidth. Therefore, in this paper we propose Dynamic Multi Path Finder (DMPF) algorithm. DMPF uses multi-path TCP (MPTCP) to transmit different Scalable Video Coding (SVC) layers, over Moving Picture Experts Group (MPEG) DASH standard in software defined network (SDN). DMPF accommodates maximum multimedia requests by DASH Clients while utilizing the network bandwidth efficiently by dynamically adapting to the varying connection characteristics. In order to test the efficiency of the DMPF, we compare its performance with Baseline Algorithm. We describe our implementation on a real network topology and show that in a simulated environment our proposed algorithm outperforms the Baseline Algorithm in accommodating requests while utilizing the network bandwidth efficiently.