面向缓存网络内容分发的非正交传输策略研究

doi:10.11959/j.issn.1000-436x.2023193

通信学报 ›› 2023, Vol. 44 ›› Issue (10): 124-136.doi: 10.11959/j.issn.1000-436x.2023193

• 学术论文 • 上一篇

面向缓存网络内容分发的非正交传输策略研究

杨龙, 李函洋, 任萌萌, 贺冰涛, 周雨晨, 陈健

西安电子科技大学通信工程学院，陕西西安 710071

修回日期:2023-08-24 出版日期:2023-10-01 发布日期:2023-10-01
作者简介:杨龙（1988− ），男，陕西潼关人，博士，西安电子科技大学副教授、博士生导师，主要研究方向为非正交多址接入、移动边缘计算、协作通信等
李函洋（1997− ），男，河北唐山人，西安电子科技大学硕士生，主要研究方向为非正交多址接入、无线缓存等
任萌萌（1996− ），女，陕西咸阳人，西安电子科技大学博士生，主要研究方向为非正交多址接入、移动边缘计算等
贺冰涛（1991− ），男，陕西西安人，博士，西安电子科技大学讲师，主要研究方向为协作通信、物理层安全和非正交多址接入
周雨晨（1991− ），女，陕西咸阳人，博士，西安电子科技大学副教授、硕士生导师，主要研究方向为物联网、信息物理系统、无线网络虚拟化等
陈健（1968− ），男，江苏如东人，博士，西安电子科技大学教授、博士生导师，主要研究方向为物理层安全、无线传感网络、非正交多址接入等
基金资助:
国家自然科学基金资助项目(61971320);国家自然科学基金资助项目(62201421);国家自然科学基金资助项目(62371354);国家自然科学基金资助项目(62371367);陕西省重点产业创新链基金资助项目(2023-ZDLGY-50);陕西省自然科学基础研究计划基金资助项目(2021JQ-206);广东省基础与应用基础研究基金资助项目(2020A1515110084)

Research on non-orthogonal transmission strategy for content delivery in caching networks

Long YANG, Hanyang LI, Mengmeng REN, Bingtao HE, Yuchen ZHOU, Jian CHEN

School of Telecommunications Engineering, Xidian University, Xi’an 710071, China

Revised:2023-08-24 Online:2023-10-01 Published:2023-10-01
Supported by:
The National Natural Science Foundation of China(61971320);The National Natural Science Foundation of China(62201421);The National Natural Science Foundation of China(62371354);The National Natural Science Foundation of China(62371367);The Shaanxi Key Industrial Innovation Chain Project(2023-ZDLGY-50);The Natural Science Basic Research Plan of Shaanxi Province(2021JQ-206);The Guangdong Basic and Applied Basic Research Foundation(2020A1515110084)

摘要/Abstract

摘要：

面向无线缓存网络的内容分发场景，设计了一种两阶段自适应非正交/正交多址接入传输方案。针对该方案，提出了一种高可靠性用户调度策略，并通过理论分析得出了中断概率的解析表达式及其高信噪比下渐近表达式。分析结果表明，该策略可获得满空间分集增益。仿真结果表明，与基于瞬时信道状态信息的调度策略、随机调度策略以及传统的正交多址接入传输策略相比，所提策略可通过获取空间分集增益，实现优于现有策略的内容分发可靠性。

关键词: 非正交多址接入, 无线缓存, 内容分发, 中断概率, 分集增益

Abstract:

A two-stage adaptive non-orthogonal/orthogonal multiple access transmission scheme was designed for content delivery scenarios in wireless caching networks.For the scheme, a high-reliability user scheduling strategy was proposed, and the analytical expression of the outage probability and its asymptotic expression in high signal-to-noise ratio regime were derived by theoretical analysis.The analysis results indicate that the proposed strategy can achieve full spatial diversity gain.Simulation results demonstrate that compared with the instantaneous channel state information-based scheduling strategy, the random scheduling strategy, and the conventional orthogonal multiple access transmission strategy, the proposed strategy can achieve better content delivery reliability than existing strategies by obtaining the spatial diversity gain.

Key words: non-orthogonal multiple access, wireless caching, content delivery, outage probability, diversity gain

中图分类号:

TN92

杨龙, 李函洋, 任萌萌, 贺冰涛, 周雨晨, 陈健. 面向缓存网络内容分发的非正交传输策略研究[J]. 通信学报, 2023, 44(10): 124-136.

Long YANG, Hanyang LI, Mengmeng REN, Bingtao HE, Yuchen ZHOU, Jian CHEN. Research on non-orthogonal transmission strategy for content delivery in caching networks[J]. Journal on Communications, 2023, 44(10): 124-136.

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面向缓存网络内容分发的非正交传输策略研究

Research on non-orthogonal transmission strategy for content delivery in caching networks

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