Load Balancing in P2P Video Streaming Systems with Service Differentiation
Load Balancing in P2P Video Streaming Systems with Service Differentiation
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DOI：
10.1109/candarw.2018.00105
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发表时间：
2018-11
期刊：
影响因子：
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通讯作者：
Yuta Yamada;S. Fujita
中科院分区：
文献类型：
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作者：
Yuta Yamada;S. Fujita
本文研究了具有服务区分的对等（P2P）视频流传输系统，其中视频流的质量等级根据用户的权限等级进行区分。在这样的P2P视频流系统中，具有高权限级别的对等体被施加了沉重的负载，因为高质量的视频通常消耗更多的上传容量。为了解决这个问题，我们编码的视频流通过使用分层编码和组织覆盖每个权限级别，并提供适当的流通过使用更多的能力与较低的权限级别的同行。然而，在该方法中，具有低权限级别的对等体被施加了沉重的负载，从而增加了与低权限对应的转发流的延迟。在本文中，我们提出了一个负载平衡的方法，这样的P2P系统。在我们所提出的方法中，通过使用更多的能力，高权限级别的同行，对应于低权限级别的流被转发。使得更多对等体在更少的跳内接收流。通过仿真对所提出的方案的性能进行了评估。仿真结果表明，该方法的节点接收子流的延迟是所有方法中最小的。
This paper considers Peer-to-Peer (P2P) video streaming systems with service differentiation, in which the quality level of a video stream is differentiated according to the authority level of the subscribers. In such P2P video streaming systems, peers with high authority level are imposed a heavy load, since high quality video generally consumes more upload capacity. To resolve such problem, we encode video stream by using a layered encoding and organize a overlay for each authority level and deliver the appropriate streams by using more capacity of peers with lower authority level. However, in the method, peers with low authority level are imposed a heavy load, so that latency of forwarding stream correspond to low authority is increased. In this paper, we propose a load balancing method for such P2P systems. In our proposed method, by using more capacity of peers with high authority level, streams corresponded to low authority level are forwarded. so that more peers receive streams within less hop. The performance of the proposed scheme is evaluated by simulation. The result of simulations shows that the latency which peers receive sub-streams with the proposed method is the smallest in all methods.