《计算机应用》唯一官方网站 ›› 2022, Vol. 42 ›› Issue (8): 2487-2500.DOI: 10.11772/j.issn.1001-9081.2021060952
• 先进计算 • 上一篇
收稿日期:
2021-06-07
修回日期:
2021-08-24
接受日期:
2021-08-31
发布日期:
2022-08-09
出版日期:
2022-08-10
通讯作者:
刘炎培
作者简介:
刘炎培(1982—),女,河南郑州人,讲师,博士,主要研究方向:高性能计算、边缘计算、大数据处理;基金资助:
Yanpei LIU(), Ningning CHEN, Yunjing ZHU, Liping WANG
Received:
2021-06-07
Revised:
2021-08-24
Accepted:
2021-08-31
Online:
2022-08-09
Published:
2022-08-10
Contact:
Yanpei LIU
About author:
LIU Yanpei, born in 1982, Ph. D., lecturer. Her research interests include high-performance computing, edge computing, big data processing.Supported by:
摘要:
随着移动设备和新兴移动应用的广泛使用,移动网络中流量的指数级增长所引发的网络拥塞、时延较大、用户体验质量差等问题无法满足移动用户的需求。边缘缓存技术通过对网络热点内容的复用,能极大缓解无线网络的传输压力;同时,该技术减少用户请求的网络时延,进而改善用户的网络体验,已经成为面向5G/Beyond 5G的移动边缘计算(MEC)中的关键性技术之一。围绕移动边缘缓存技术,首先介绍了移动边缘缓存的应用场景、主要特性、执行过程和评价指标;其次,对以低时延高能效、低时延高命中率及最大化收益为优化目标的边缘缓存策略进行了分析和对比,并总结出各自的关键研究点;然后,阐述了支持5G的MEC服务器的部署,并在此基础上分析了5G网络中的绿色移动感知缓存策略和5G异构蜂窝网络中的缓存策略;最后,从安全、移动感知缓存、基于强化学习的边缘缓存、基于联邦学习的边缘缓存以及Beyond 5G/6G网络的边缘缓存等几个方面讨论了边缘缓存策略的研究挑战和未来发展方向。
中图分类号:
刘炎培, 陈宁宁, 朱运静, 王丽萍. 面向5G/Beyond 5G的移动边缘缓存优化技术综述[J]. 计算机应用, 2022, 42(8): 2487-2500.
Yanpei LIU, Ningning CHEN, Yunjing ZHU, Liping WANG. Review of mobile edge caching optimization technologies for 5G/Beyond 5G[J]. Journal of Computer Applications, 2022, 42(8): 2487-2500.
优化目标 | 适用对象 | 相关文献 | 关键研究点 |
---|---|---|---|
低时延高能效 | 时延和能耗都直接影响QoS的应用 | 文献[ | 综合效用的缓存放置策略;协作的缓存策略;缓存和卸载的联合优化策略 |
低时延高命中率 | 时延和命中率都直接影响QoS的应用 | 文献[ | 基于学习的缓存策略;移动感知的缓存策略;内容放置和交付的联合优化缓存策略 |
最大化收益 | CP成本或网络成本最小的应用 | 文献[ | 基于非合作博弈模型的缓存策略;在线学习的缓存策略;基于D2D的优化策略 |
表1 移动边缘缓存策略总结归类
Tab. 1 Summary and classification of mobile edge caching strategies
优化目标 | 适用对象 | 相关文献 | 关键研究点 |
---|---|---|---|
低时延高能效 | 时延和能耗都直接影响QoS的应用 | 文献[ | 综合效用的缓存放置策略;协作的缓存策略;缓存和卸载的联合优化策略 |
低时延高命中率 | 时延和命中率都直接影响QoS的应用 | 文献[ | 基于学习的缓存策略;移动感知的缓存策略;内容放置和交付的联合优化缓存策略 |
最大化收益 | CP成本或网络成本最小的应用 | 文献[ | 基于非合作博弈模型的缓存策略;在线学习的缓存策略;基于D2D的优化策略 |
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