Adaptability of applications according to the visibility offered SDN controller

Abstract

The volume of video traffic has grown considerably in recent years. This increase is pushing back the capabilities of the traditional networks of Internet Service Providers (ISPs), which results in their overuse and, consequently, the degradation of the video‘s Quality of Experience (QoE) perceived by users. In traditional networks Quality of Service (QoS) is one of the proposed solutions to overcome this problem, but it has many drawbacks because it is built on top of a fully distributed architecture that lacks broader visibility into the overall network resources. This work tries to solve this problem in the case of video streaming. To do this, we have used the great visibility provided by the SDN controller to develop a telemetry service in order to collect information about the state of the network and then provide it to the video streaming application to permit it to adapt its diffusion parameters accordingly. Finally, we moved on to the testing part where we demonstrated the effectiveness of our solution and its impact on the user‘s quality of experience. Keywords : SDN, QoS, QoE, Telemetry, Streaming.