A consistent QoS routing strategy for video streaming services in SDN networks. (22nd October 2019) - Henni, Djamel Eddine
Summary: The software‐defined networking (SDN) paradigm proposes to decouple the control plane (decision‐making process) and the data plane (packet forwarding) to overcome the limitations of traditional network infrastructures, which are known to be difficult to manage, especially at scale. Although there are previous works focusing on the problem of quality of service (QoS) routing in SDN networks, only few solutions have taken into consideration the network consistency, which reflects the adequacy between the decisions made and the decisions that should be taken. Therefore, we propose a network architecture that guarantees the consistency of the decisions to be taken in an SDN network. A consistent QoS routing strategy is then introduced in a way that avoids any quality degradation of prioritized traffic while optimizing resources usage. Thus, we proposed a traffic dispersion heuristic in order to achieve this goal. We compared our approach with several existing framework in terms of best‐effort flows average throughput, average video bitrate, and video quality of experience (QoE). The emulation results, which are performed using the Mininet environment, clearly demonstrate the effectiveness of the proposed approach that outperforms existing frameworks. Abstract : In this paper, a consistent network architecture for quality of service (QoS) routing in software‐defined networking (SDN) is proposed to enhance video streaming quality and best‐effort flows throughput. The proposed network architecture aims to have a consistent view of the network, consistent decisions, and consistent rules' enforcement strategy. The emulations results, which are performed using the Mininet environment, clearly demonstrate the effectiveness of the proposed approach, which outperforms existing frameworks.