Research on Content Priority-Based Caching Strategy in NDMANET

doi:10.19678/j.issn.1000-3428.0057266

Computer Engineering ›› 2021, Vol. 47 ›› Issue (3): 190-195. doi: 10.19678/j.issn.1000-3428.0057266

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Research on Content Priority-Based Caching Strategy in NDMANET

GAO Zixuan¹, ZHENG Quan^1,2

1. Laboratory for Future Networks, Department of Automation, University of Science and Technology of China, Hefei 230026, China;
2. Institute of Advanced Technology, University of Science and Technology of China, Hefei 230088, China

Received:2020-01-19 Revised:2020-03-05 Published:2020-03-16

NDMANET中基于内容优先级的缓存策略研究

高子轩¹, 郑烇^1,2

1. 中国科学技术大学自动化系未来网络实验室, 合肥 230026;
2. 中国科学技术大学先进技术研究院, 合肥 230088

作者简介:高子轩(1995-),男,硕士研究生,主研方向为未来网络、缓存技术;郑烇(通信作者),副教授、博士。
基金资助:
中国电科联合基金项目“支持‘拟人脑态’计算的数据中心关键技术”（6141B08080101）。

Abstract

Abstract: Most of NDMANET caching strategies do not consider the priority of content,which reduces the usability of important content in mobile environment.To address the problem,this paper proposes a cache replacement strategy PFC based on content priority.The content is prioritized according to their different availability requirements.Then,the content priority is used as a reference factor in cache replacement decision to improve the hit rate and availability of important content.The results of simulation on ndnSIM show that compared with LRU and FIFO strategies,the PFC strategy can significantly increase the cache content ratio of important content and its availability without affecting the global hit rate and response delay.

Key words: Named Data Networks(NDN), Mobile Ad hoc Networks (MANET), caching replacement strategy, content priority, high availability

摘要： 多数NDMANET缓存策略研究未考虑内容的优先级，从而降低了重要内容在节点移动环境下的可用性。针对该问题，提出一种基于内容优先级的缓存替换策略PFC。根据节点内容对可用性的不同需求划分内容优先级，将其作为缓存替换的参考因子进行缓存替换决策，以提高重要内容的命中率和可用性。在ndnSIM仿真平台上的测试结果表明，相比LRU和FIFO策略，PFC策略在不影响全局命中率和响应时延的情况下，可以明显提高重要内容的缓存占比与可用性。

关键词: 命名数据网络, 移动自组织网络, 缓存替换策略, 内容优先级, 高可用性

CLC Number:

TP391

GAO Zixuan, ZHENG Quan. Research on Content Priority-Based Caching Strategy in NDMANET[J]. Computer Engineering, 2021, 47(3): 190-195.

高子轩, 郑烇. NDMANET中基于内容优先级的缓存策略研究[J]. 计算机工程, 2021, 47(3): 190-195.

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