Effective new cache decision policy for breadcrumbs in content-centric networking
Effective new cache decision policy for breadcrumbs in content-centric networking
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DOI：
10.1109/cqr.2017.8289446
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发表时间：
2017-05
期刊：
影响因子：
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通讯作者：
Yusaku Hayamizu;Akihisa Shibuya;M. Yamamoto
中科院分区：
文献类型：
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作者：
Yusaku Hayamizu;Akihisa Shibuya;M. Yamamoto
信息中心网络（ICN）是为了实现高效的内容分发而提出的。ICN路由器通常配备缓存存储器，暂时存储传入的数据包。为了利用网络中尽可能多的总缓存存储，路由器上安装的路由策略和缓存策略的组合是影响性能的主要因素。在路由策略方面，提出了一种具有网内引导的有效的离路转发方法——面包屑。本文提出了一种适用于面包屑的基于中间性中心性和内容流行度的缓存决策策略。我们提出的缓存决策策略使热门内容位于网络的边缘区域，从而稳定了热门缓存内容。中等流行的内容倾向于存储在核心区，这导致网内引导请求更频繁地遇到缓存内容。我们的性能评估结果表明，与现有的缓存决策策略相比，面包屑和我们提出的缓存决策策略的组合提高了缓存命中性能。
Information-Centric Networking (ICN) has been proposed for efficient content distribution. ICN routers are generally equipped with cache storages and store incoming data packets temporally. In order to leverage as much total cache storages in a network as possible, the combination of routing policy and cache policy installed on the routers is dominant factor for performance. For routing policy, an efficient off-path forwarding method with in-network guidance, Breadcrumbs, has been proposed. In this paper, we propose a cache decision policy based on betweenness centrality and content popularity, which is suitable for Breadcrumbs. Our proposed cache decision policy makes popular contents located edge area of a network, which stabilizes popular cached contents. Moderate popular contents tend to be stored in core area, which induces in-network guided requests to encounter cached contents more frequently. Our performance evaluation results reveal that the combination of Breadcrumbs and our proposed cache decision policy improves cache hit performance compared to existing cache decision policies.