NDLI: Evaluating and improving push based video streaming with HTTP/2

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Evaluating and improving push based video streaming with HTTP/2

Content Provider	ACM Digital Library
Author	Chen, Songqing Wei, Sheng Swaminathan, Viswanathan Xiao, Mengbai
Abstract	The sever-initiated push mechanism is one of the most prominent features in the next generation HTTP/2 protocol, having shown its capability on saving network traffic and improving the web page retrieval latency. Our prior work has investigated the server push-based mechanism for HTTP video streaming and proposed a k-push scheme, where the server pushes k video segments following the response to a request. In this study, we further conduct an analysis and evaluation of the k-push scheme in HTTP streaming. Our results uncover that the push mechanism can efficiently increase the network utilization (under certain conditions) compared to regular HTTP streaming. However the results also show that the k-push scheme deteriorates network adaptability and leads to the "over-push" problem, in which the pushed video content waste network resources due to user abandonment behaviors. To overcome these limitations, we propose a new " adaptive-push" scheme, which dynamically adjusts the parameter k to adapt to the runtime environment. To evaluate the performance of adaptive-push, we implemented a prototype system. The experimental results show that compared to k-push, adaptive-push can improve the network adaptability. Furthermore, our real-world trace based simulation results show that adaptive-push can effectively alleviate the over-push problem.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF
ISBN	9781450343565
DOI	10.1145/2910642.2910652
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2016-05-10
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Http streaming Video streaming
Content Type	Text
Resource Type	Article

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