最小延迟保证了5G无线网络中设备对设备的协同缓存

M. D. Amentie, Min Sheng, Jiongjiong Song, Junyu Liu
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引用次数: 9

摘要

在无线网络中,用户设备(ue)和基站(BSs)之间的内容协同缓存技术可以提高数据访问的性能。在本文中,我们考虑了基于集群的协作设备到设备(D2D)缓存网络,并制定了缓存问题,以最小化内容检索延迟。为了实现这一目标,我们考虑到ue有限的存储容量、内容的流行程度和网络中的内容访问过程,开发了一种内容缓存和替换方案。因此,我们的方案通过在ue和BS上缓存流行内容,并以较小的平均请求跳数交付请求内容,显示了最小的延迟。此外,我们根据加入集群的UE数量、内容受欢迎程度和集群中边缘UE数量等参数,对我们的方法与其他缓存方案进行了评估。仿真结果表明,所提出的缓存方案明显优于其他方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Minimum delay guaranteed cooperative device-to-device caching in 5G wireless networks
In wireless networks, the technique of caching contents cooperatively in user equipments (UEs) and base stations (BSs) enables to improve the performance of data access. In this paper, we consider cluster based cooperative device-to-device (D2D) caching enabled network and formulate the caching problem to minimize content retrieving delay. To achieve this, we develop a content caching and replacement scheme by considering the limited storage capacity of UEs, content popularity, and content access process in the network. As a result, our scheme has shown the minimal delay by caching popular contents on UEs and BS with delivering requested contents at smaller average request hops. Moreover, we evaluate our approach with other caching schemes based on parameters as the number of UEs joining the cluster, content popularity and the number of edge UE in a cluster. Simulation results show that the proposed caching scheme significantly outperforms the other schemes.
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