A Survey on Applications of Cache-Aided NOMA

IF 34.4 1区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Communications Surveys and Tutorials Pub Date : 2023-07-07 DOI:10.1109/COMST.2023.3293231

Dipen Bepari;Soumen Mondal;Aniruddha Chandra;Rajeev Shukla;Yuanwei Liu;Mohsen Guizani;Arumugam Nallanathan

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引用次数: 2

Abstract

Contrary to orthogonal multiple-access (OMA), non-orthogonal multiple-access (NOMA) schemes can serve a pool of users without exploiting the scarce frequency or time domain resources. This is useful in meeting the future network requirements (5G and beyond systems), such as, low latency, massive connectivity, users’ fairness, and high spectral efficiency. On the other hand, content caching restricts duplicate data transmission by storing popular contents in advance at the network edge which reduces data traffic. In this survey, we focus on cache-aided NOMA-based wireless networks which can reap the benefits of both cache and NOMA; switching to NOMA from OMA enables cache-aided networks to push additional files to content servers in parallel and improve the cache hit probability. Beginning with fundamentals of the cache-aided NOMA technology, we summarize the performance goals of cache-aided NOMA systems, present the associated design challenges, and categorize the recent related literature based on their application verticals. Concomitant standardization activities and open research challenges are highlighted as well.

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缓存辅助NOMA的应用综述

与正交多址（OMA）相反，非正交多址方案可以在不利用稀缺的频域或时域资源的情况下为用户池提供服务。这有助于满足未来的网络需求（5G及其他系统），如低延迟、大规模连接、用户公平性和高频谱效率。另一方面，内容缓存通过在网络边缘预先存储流行内容来限制重复数据传输，从而减少了数据流量。在这项调查中，我们重点关注基于缓存辅助NOMA的无线网络，它可以同时获得缓存和NOMA的好处；从OMA切换到NOMA使得缓存辅助网络能够并行地将附加文件推送到内容服务器，并提高缓存命中概率。从缓存辅助NOMA技术的基本原理开始，我们总结了缓存辅助NOMA系统的性能目标，提出了相关的设计挑战，并根据其垂直应用对最近的相关文献进行了分类。同时也强调了标准化活动和开放研究的挑战。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Surveys and Tutorials COMPUTER SCIENCE, INFORMATION SYSTEMS-TELECOMMUNICATIONS

CiteScore

80.20

自引率

2.50%

发文量

审稿时长

6 months

期刊介绍： IEEE Communications Surveys & Tutorials is an online journal published by the IEEE Communications Society for tutorials and surveys covering all aspects of the communications field. Telecommunications technology is progressing at a rapid pace, and the IEEE Communications Society is committed to providing researchers and other professionals the information and tools to stay abreast. IEEE Communications Surveys and Tutorials focuses on integrating and adding understanding to the existing literature on communications, putting results in context. Whether searching for in-depth information about a familiar area or an introduction into a new area, IEEE Communications Surveys & Tutorials aims to be the premier source of peer-reviewed, comprehensive tutorials and surveys, and pointers to further sources. IEEE Communications Surveys & Tutorials publishes only articles exclusively written for IEEE Communications Surveys & Tutorials and go through a rigorous review process before their publication in the quarterly issues. A tutorial article in the IEEE Communications Surveys & Tutorials should be designed to help the reader to become familiar with and learn something specific about a chosen topic. In contrast, the term survey, as applied here, is defined to mean a survey of the literature. A survey article in IEEE Communications Surveys & Tutorials should provide a comprehensive review of developments in a selected area, covering its development from its inception to its current state and beyond, and illustrating its development through liberal citations from the literature. Both tutorials and surveys should be tutorial in nature and should be written in a style comprehensible to readers outside the specialty of the article.