A novel message broadcasting strategy for reliable content retrieval in multi-hop wireless content centric networks
A novel message broadcasting strategy for reliable content retrieval in multi-hop wireless content centric networks
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DOI：
10.1145/2701126.2701231
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发表时间：
2015-01
期刊：
影响因子：
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通讯作者：
Dabin Kim;Young-Bae Ko
中科院分区：
文献类型：
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作者：
Dabin Kim;Young-Bae Ko
内容中心网络(CCN)体系结构旨在通过基于名称的内容检索和网内缓存来解决传统IP互联网的流量爆炸问题。已经使用各种联网技术讨论了许多有效的方法来节省CCN中的大量带宽使用。然而，它仍然会引起所谓的“消息风暴问题”，因为它经常无法检索具有意外消息丢失的内容，随后是后备方案激活，导致大量内容请求消息泛滥整个网络。当CCN的概念被应用到无线多跳网络环境中时，这样的消息风暴问题变得更加严重。本文提出了一种适用于多跳无线CCN的轻量级基于名称的内容检索算法，该算法基于三层策略，包括周期性的转发器信息更新、合格的转发器选择和可靠的CCN消息广播策略。我们在CCNx实验床上实现了该方案，并进行了全面的评估研究，与CCN的基本机会广播方法相比，它的性能更优越，吞吐量提高了50%以上。
The Content Centric Networking (CCN) architecture has been designed to resolve a traffic explosion problem of the traditional IP-based Internet by making a name-based content retrieving and in-network caching. Many effective methods have been discussed with various networking technologies to save substantial bandwidth usages in a CCN. However, still it can induce a so-called "message storming problem" because it often fails to retrieve contents with unexpected message loss, followed by a fallback scheme activation that results in a huge number of content request message flooding over the whole network. Such a message storming problem even becomes severe when the concept of CCN is applied in wireless multi-hop networking environments. In this paper, we present a lightweight name-based content retrieving algorithm for a multi-hop wireless CCN based on a three-tier strategy that consists of a periodic forwarder information updating, an eligible forwarder selection, and a reliable CCN message broadcasting strategy methods. We have implemented the proposed scheme over the CCNx testbed and conducted a comprehensive evaluation study, by which its superior performance with more than 50% higher throughput is proven compared to the basic opportunistic broadcasting method of CCN.