Segment‐aware dynamic routing for DASH flows over software‐defined networks,International Journal of Network Management

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Segment‐aware dynamic routing for DASH flows over software‐defined networks
International Journal of Network Management ( IF 1.5 ) Pub Date : 2020-02-13 , DOI: 10.1002/nem.2102
Cihat Cetinkaya ₁ , Korhan Herguner ₂ , Cornelius Hellge ₃ , Muge Sayit ₄

Affiliation

Most of the video streaming applications running over the Internet send video data over HTTP and provide an architecture for video clients to adapt video quality during streaming. In HTTP adaptive streaming, a raw video is encoded at various qualities, each encoded video file is divided into small segments, and the clients may change the segment quality by sending requests for segments having different qualities over time. MPEG has standardized dynamic adaptive streaming over HTTP (MPEG‐DASH) due to this tendency. In this work, we focus on DASH over software‐defined networks (SDN), and we dynamically reroute DASH flows by considering the current network capacity, available bandwidth of the paths, and bitrate of the segments in order to provide high quality of experience (QoE) and fairness among DASH clients. Simulations performed under various network conditions show that the proposed study provides higher QoE and fairness compared with the max‐flow routing approach.

中文翻译：

通过软件定义的网络对DASH进行分段感知的动态路由

在Internet上运行的大多数视频流应用程序都通过HTTP发送视频数据，并为视频客户端提供一种体系结构，以在流期间调整视频质量。在HTTP自适应流传输中，原始视频以各种质量进行编码，每个编码的视频文件被划分为小段，客户端可以通过发送随时间推移具有不同质量的段的请求来更改段质量。由于这种趋势，MPEG已通过HTTP（MPEG-DASH）标准化了动态自适应流。在这项工作中，我们专注于软件定义网络（SDN）上的DASH，并通过考虑当前网络容量，路径的可用带宽和网段的比特率来动态地重新路由DASH流，以提供高质量的体验（ QoE）和DASH客户之间的公平性。

更新日期：2020-02-13

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