Fairness Issues of ABR Video Streaming Over TCP from Application and Transport Views

DASH video streaming is now major traffic in the current Internet. Adaptive bitrate algorithm operated in the application layer and TCP congestion control algorithm in the transport layer decides selected bitrate of each segment while affecting each other. In this paper, we discuss fairness issues of ABR over different TCP algorithms. In this paper, we especially focus on congestion window validation which has not been installed in widely used network simulator ns-3. We install it on ns-3 and our evaluation results newly reveal that TCP behavior affected by congestion window validation might be one of the reasons for unfairness between ABR bitrate selection over different TCP versions.