Quality of service aware routing in software defined video streaming: a survey

Software Defined Network (SDN) is a new emerging technology that has attracted enormous interest over the last few years as a result of existing networking designs' constraints. It allows a centralized programmable controller to interface with forwarding devices and is utilized in a variety of communication networking scenarios, including Service Provider networks, Campus networks, Hospitality networks, Video communication, etc. One of the promising applications is multimedia services to provide strict delay guarantees for the transferred flows. The video traffic demands a guaranteed Quality of Service (QoS) to provide a smooth consumer experience. Several QoS models have been proposed in the literature and individual studies are presented to measure the QoS metric. An overview of interesting research on QoS models for video streaming over SDN, issues in video streaming models, existing QoS models, QoS metrics used for emulation, and limitations of QoS models are presented in this paper.