tailieunhanh - SDN-based adaptive routing for video streaming over HTTP

In this paper, we propose a bitrate adaptation algorithm at the client side in real time combined with a SDN-based dynamic path selection for HTTP-based video streaming. Experimental results show that the proposed method can provide users with better Quality of Experience (QoE) with lower number of rerouting times, higher average quality and smoother video quality than existing non-SDN methods under different scenarios of bandwidth fluctuations. | Journal of Science & Technology 131 (2018) 069-075 SDN-based Adaptive Routing for Video Streaming over HTTP Pham Hong Thinh 1,2,*, Nguyen Duc An 1, Tran Duc Tan 1, Truong Thu Huong1 Pham Ngoc Nam 1 1 Hanoi University of Science and Technology, No. 1, Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam 2 Quy Nhon University, Binhdinh, Vietnam Received: May 28, 2018; Accepted: November 26, 2018 Abstract OpenFlow/Software-Defined Networking (SDN) is a new networking paradigm that virtualizes network infrastructure by decoupling the control and data plane logic of traditional network devices. The controller of SDN has the overall look about network topology and hence provides flexibility to network operators to implement its own routing approaches. However, it could not control the way client works. In this paper, we propose a bitrate adaptation algorithm at the client side in real time combined with a SDN-based dynamic path selection for HTTP-based video streaming. Experimental results show that the proposed method can provide users with better Quality of Experience (QoE) with lower number of rerouting times, higher average quality and smoother video quality than existing non-SDN methods under different scenarios of bandwidth fluctuations. Keywords: Adaptive streaming, Adaptive routing, DASH, SDN. 1. Introduction1 achieved success in bitrate adaptation of video streaming over HTTP, collaborative dynamic routing in network has not been mentioned. In recent years, video streaming transmission with suitable bitrate like HTTP adaptive streaming (HAS) has become one of the standards for over-thetop video streaming. In HAS, the rate adaptation algorithm is deployed at the client side. In each server, video content is encoded in many different quality levels and divided up in many different segments. Besides, the client could select a qualitative level which is suitable for each video segment depending on network conditions. At present, in the system of Dynamic .