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Scalable Video Streaming With Helper Nodes Using Random Linear Network coding

IEEE-ACM TRANSACTIONS ON NETWORKING 2016年第3期24卷 1574-1587页

作者： Ostovari, Pouya Wu, Jie Khreishah, Abdallah Shroff, Ness B. Temple Univ Dept CIS Philadelphia PA 19122 USA New Jersey Inst Technol Dept ECE Newark NJ 07102 USA Ohio State Univ Dept ECE Columbus OH 43210 USA Ohio State Univ Dept CSE Columbus OH 43210 USA

Video streaming generates a substantial fraction of the traffic on the Internet. The demands of video streaming also increase the workload on the video server, which in turn leads to substantial slowdowns. In order to resolve the slowdown problem, and to provide a scalable and robust infrastructure to support on-demand streaming, helper-assisted video-on-demand (VoD) systems have been introduced. In this architecture, helper nodes, which are micro-servers with limited storage and bandwidth resources, download and store the user-requested videos from a central server to decrease the load on the central server. Multi-layer videos, in which a video is divided into different layers, can also be used to improve the scalability of the system. In this paper, we study the problem of utilizing the helper nodes to minimize the pressure on the central servers. We formulate the problem as a linear programming using joint inter-and intra-layer network coding. Our solution can also be implemented in a distributed manner. We show how our method can be extended to the case of wireless live streaming, in which a set of videos is broadcasted. Moreover, we extend the proposed method to the case of unreliable connections. We carefully study the convergence and the gain of our distributed approach.

关键词： Inter-layer coding intra-layer coding multi-layer video salable video coding streaming video-on-demand (VoD)

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Multi-layer Video Streaming with Helper Nodes using Network coding

Multi-Layer Video Streaming with Helper Nodes using Network ...

引用

IEEE 10th International Conference on Mobile Ad-Hoc and Sensor Systems (MASS)

作者： Ostovari, Pouya Khreishah, Abdallah Wu, Jie Temple Univ Dept Comp & Informat Sci Philadelphia PA 19122 USA New Jersey Inst Technol Dept Elect & Comp Engn Newark NJ 07102 USA

ISBN: (纸本)9780769551043

Video streaming is one of the dominant forms of traffic on the Internet. This increases workload on the video servers, which leads to substantial slowdowns. In order to resolve the slowdown problem, and to provide a scalable and robust infrastructure to support on-demand streaming, helper-assisted video-on-demand (VoD) systems have been introduced. In this architecture, helper nodes, which are micro-servers with limited storage and bandwidth resources, download and store the user-requested videos from a central server to decrease the load on the central server. Multi-layer videos, in which a video is divided into different layers, can also be used to improve scalability. In this paper, we study the problem of utilizing the helper nodes to minimize the pressure on the central servers. We formulate the problem as a linear programming (LP) optimization using joint inter-and intra-layer network coding (NC). We show that a lightweight triangular inter-layer NC can be used, instead of the general form of inter-layer NC, to achieve the optimal solution. Our solution can also be implemented in a distributed manner. We show how our method can be extended to the case of wireless live streaming, in which a set of videos is broadcast. We carefully study the convergence and the gain of our distributed approach.

关键词： Video-on-demand (VoD) streaming multi-layer video intra-layer coding inter-layer coding wireless network

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