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Cache the Queues: Caching and Forwarding in ICN from a Congestion Control Perspective

机译：缓存队列：从拥塞控制的角度在ICN中缓存和转发

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摘要

Caching and multipath forwarding are essential ingredients of the Information-Centric Networking (ICN) architecture resulting from ubiquitous content storage and content-based node-by-node forwarding nature of ICN. Much is yet to see how they jointly act towards improving user's quality of experience. To this end, we formulate in this paper a unified problem of caching and multipath forwarding as a network optimization problem to maximize user satisfaction which is expressed by their utility function. The formulation allows us to see caching and multipath forwarding in ICN from a congestion control perspective and to reinforce the advantage of a class of congestion-aware caching where in-network caches are used to absorb network congestion and to enhance user's satisfaction. In that context, multipath forwarding plays the role of directing content delivery to less congested paths where network capacity is abundant or where requested content has been stored by in-network caches. We evaluate such a congestion control-based, coupled caching and multipath forwarding approach in simulations. The result confirms the advantage of our approach compared with existing ones.
机译：高速缓存和多路径转发是信息中心网络（ICN）架构的基本组成部分，其源于无处不在的内容存储和ICN基于内容的逐节点转发特性。尚未看到它们如何共同为提高用户的体验质量而采取的行动。为此，我们在本文中将缓存和多路径转发的统一问题表述为网络优化问题，以最大程度地提高用户满意度，这由其效用函数表示。该公式使我们能够从拥塞控制的角度看到ICN中的缓存和多路径转发，并增强了拥塞感知缓存的优势，其中网络内缓存用于吸收网络拥塞并提高用户满意度。在这种情况下，多路径转发的作用是将内容传递引导到网络资源丰富或网络内缓存已存储请求的内容的较少拥塞的路径。我们在仿真中评估了这种基于拥塞控制的耦合缓存和多路径转发方法。结果证实了我们的方法与现有方法相比的优势。

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