Shared Content Addressing Protocol (SCAP): Optimizing multimedia content distribution at the transport layer
Shared Content Addressing Protocol (SCAP): Optimizing multimedia content distribution at the transport layer
复制标题
共享内容寻址协议 (SCAP)：优化传输层的多媒体内容分发
DOI：
10.1109/noms.2012.6211912
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
F. Turck
中科院分区：
文献类型：
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作者：
K. D. Schepper;Bart De Vleeschauwer;Chris Hawinkel;W. V. Leekwijck;J. Famaey;Wim Van de Meerssche;F. Turck
近年来，网络社区投入了大量的研究工作来寻找新的方法，以比单播更好的方式向多个用户分发内容。现在视频是主要的流量类型，并且预计会进一步增长，可扩展的交付变得更加重要。为了使内容分发可扩展，需要网络内优化功能，例如缓存。已建立的传输层协议是端到端的，并且不允许优化应用层以下的传输，因此位于网络中的覆盖应用层解决方案很受欢迎。在本文中，我们介绍了一种新颖的传输协议，即共享内容寻址协议（SCAP），它允许网络内中间元素仅使用传输层来参与优化交付过程。 SCAP运行在标准IP网络之上，SCAP优化功能可以根据需要透明地插入网络。这样，网络中只需要部署基于传输协议的中间功能，应用程序可以停留在拓扑端点。我们使用透明的仅 SCAP 中间优化函数的仿真和原型实现来定义和评估 SCAP 协议的原型版本。
In recent years, the networking community has put a significant research effort in identifying new ways to distribute content to multiple users in a better-than-unicast manner. Scalable delivery is more important now video is the dominant traffic type and further growth is expected. To make content distribution scalable, in-network optimization functions are needed such as caches. The established transport layer protocols are end-to-end and do not allow optimizing transport below the application layer, hence the popularity of overlay application layer solutions located in the network. In this paper, we introduce a novel transport protocol, the Shared Content Addressing Protocol (SCAP) that allows in-network intermediate elements to participate in optimizing the delivery process, using only the transport layer. SCAP runs on top of standard IP networks, and SCAP optimization functions can be plugged-in the network transparently as needed. As such, only transport protocol based intermediate functions need to be deployed in the network, and the applications can stay at the topological end points. We define and evaluate a prototype version of the SCAP protocol using both simulation and a prototype implementation of a transparent SCAP-only intermediate optimization function.