International Journal of Advanced Networking and Applications

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QoE in DASH


Affiliations
1 Department of Computing and Information Technology, The University of the West Indies, Trinidad and Tobago
2 Department of Computing and Information Technology The University of the West Indies, Trinidad and Tobago
 

Over recent years there has been a considerable shift, from quality of service (QoS) to quality of experience (QoE), when evaluating video delivery across networks. Hence, we first explore the need for this shift towards user-QoE in the video delivery ecosystem. Further, we investigate major QoE metrics researchers use in the evaluation of DASH users. We point out a huge problem with DASH beginning with its transport layer protocol. DASH utilizes Transmission control protocol (TCP) as the transport layer protocol. Thus, we give an overview of the mechanism of Transmission Control Protocol (TCP) and two mechanisms greatly impacting the streaming process: (1) TCP congestion mechanism and (2) TCP Fast Start. This leads us to investigate the impact of these TCP mechanisms on DASH players and consequently user-QoE.

Keywords

QoS, User-QoE, Video, TCP, Transport Layer, Dash, Congestion, Fast Start.
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  • QoE in DASH

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Authors

Koffka Khan
Department of Computing and Information Technology, The University of the West Indies, Trinidad and Tobago
Wayne Goodridge`
Department of Computing and Information Technology The University of the West Indies, Trinidad and Tobago

Abstract


Over recent years there has been a considerable shift, from quality of service (QoS) to quality of experience (QoE), when evaluating video delivery across networks. Hence, we first explore the need for this shift towards user-QoE in the video delivery ecosystem. Further, we investigate major QoE metrics researchers use in the evaluation of DASH users. We point out a huge problem with DASH beginning with its transport layer protocol. DASH utilizes Transmission control protocol (TCP) as the transport layer protocol. Thus, we give an overview of the mechanism of Transmission Control Protocol (TCP) and two mechanisms greatly impacting the streaming process: (1) TCP congestion mechanism and (2) TCP Fast Start. This leads us to investigate the impact of these TCP mechanisms on DASH players and consequently user-QoE.

Keywords


QoS, User-QoE, Video, TCP, Transport Layer, Dash, Congestion, Fast Start.

References