Adaptive bitrate media streaming clients adjust the quality of media content depending on the current network conditions. The shared resource allocation (SRA) feature defined in MPEG-SAND (server and network assisted DASH) allows servers to allocate bandwidth to streaming clients. This enables coordination and prioritization of clients that are connected to the same network bottleneck (e.g., to maximize the number of clients that can play back a stream fluently). In this article, we evaluate different bandwidth limitation strategies and analyze the effects on the clients. For this purpose, a testbed using multiple Raspberry Pis was created. The results show that in various scenarios, SRA improves the fairness and the QoE of streaming sessions. Solely allocating a maximum quality level to the client is not sufficient in some cases. Therefore, additional means, such as limiting bandwidth on the client or traffic shaping with software-defined networking for SRA, are evaluated.

中文翻译：

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使用 SAND 评估 ABR 流的共享资源分配

自适应比特率媒体流客户端根据当前网络状况调整媒体内容的质量。MPEG-SAND（服务器和网络辅助 DASH）中定义的共享资源分配 (SRA) 功能允许服务器将带宽分配给流媒体客户端。这实现了连接到相同网络瓶颈的客户端的协调和优先级排序（例如，最大化可以流畅播放流的客户端数量）。在本文中，我们评估了不同的带宽限制策略并分析了对客户端的影响。为此，创建了一个使用多个 Raspberry Pi 的测试平台。结果表明，在各种场景下，SRA 提高了流会话的公平性和 QoE。在某些情况下，仅仅为客户分配最高质量水平是不够的。所以，