NDN和基于SDN的NDN中的源驱动概率转发和缓存策略,International Journal of Communication Systems

当前位置： X-MOL 学术 › Int. J. Commun. Syst. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

NDN和基于SDN的NDN中的源驱动概率转发和缓存策略
International Journal of Communication Systems ( IF 1.7 ) Pub Date : 2022-01-22 , DOI: 10.1002/dac.5093
Shahid Md. Asif Iqbal _{1,

2} , Asaduzzaman ₁ , Mohammed Moshiul Hoque ₁

Affiliation

NDN转发策略主要是由接收者驱动开发的，其中兴趣转发和数据（内容）传递是从消费者的角度来控制的。接收者驱动的策略本质上是贪婪的，并且强调优化兴趣转发，这远离性能瓶颈，因为兴趣与内容的大小相比很小。因此，优化内容传递可以提高转发性能。此外，内容交付的源驱动优化可以减轻其对应物的贪婪本性。在这项工作中，提出了一种源驱动的转发策略，其中内容源响应兴趣分布式请求。内容请求命中所有源，但源以概率方式响应，使得内容检索开销和延迟最小化。该策略允许较近的来源设置对匹配内容做出反应的高概率。相反，远距离的源回答一个提议，以节省传输开销。此外，还提出了一种缓存策略，它是源驱动方案的一个组成部分，考虑到连续副本和内容可用性之间的差距，在允许新内容的同时缓存不同的内容。接下来，我们将源驱动的概率转发策略扩展为在基于SDN的NDN架构中运行。SDN _基于NDN缓存状态的全局知识来控制内容交付阶段。使用 ndnSIM 进行的仿真研究表明，所提出的转发和缓存策略在传输开销、延迟和缓存命中等不同性能指标方面提高了用户满意度和网络性能。

"点击查看英文标题和摘要"

A source-driven probabilistic forwarding and caching strategy in NDN and SDN-based NDN

NDN forwarding strategies are mainly developed receiver-driven, where Interest forwarding and Data (content) delivery are controlled from the consumers' viewpoint. The receiver-driven strategies are greedy by nature and emphasize optimizing the Interest forwarding, which is far from the performance bottleneck as an Interest is of tiny size in compared with a content's size. Thus, optimizing the content delivery can improve the forwarding performance. Moreover, source-driven optimization of content delivery can alleviate the greedy nature of its counterpart. In this work, a source-driven forwarding strategy is proposed where the content sources respond to Interest requests in a distributed manner. The content requests hit all the sources, but the sources respond probabilistically such that the content retrieval overhead and latency are minimized. The strategy consents the nearer sources to set a high probability of reacting with the matching content. On the contrary, the distant sources answer with an Offer to save transmission overhead. Besides, a caching strategy is proposed, an integral part of the source-driven scheme, that caches diverse contents considering the gap between successive copies and content availability while admitting new contents. Next, we extend the source-driven probabilistic forwarding strategy to operate in SDN-based NDN architecture. The SDN-based solution controls the content delivery phase using the global knowledge of NDN cache states. Simulation study conducted using ndnSIM reveals that the proposed forwarding and caching strategy improves user satisfaction and network performance in terms of different performance metrics such as transmission overhead, latency, and cache hit.

更新日期：2022-01-22

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南