A Survey on Cache-Aided NOMA for 6G Networks

Authors

Dipen Bepari, The Department of Electronics and Communication Engineering, National Institute of Technology, Chhattisgarh, Raipur, 492010, India
Soumen Mondal, The Department of Electronics and Communication Engineering, National Institute of Technology, West Bengal, Durgapur, 713209, India
Aniruddha Chandra, The Department of Electronics and Communication Engineering, National Institute of Technology, West Bengal, Durgapur, 713209, India
Rajeev Shukla, The Department of Electronics and Communication Engineering, National Institute of Technology, West Bengal, Durgapur, 713209, India
Yuanwei Liu, The School of Electronic Engineering and Computer Science, Queen Mary University of London, London, E1 4NS, United Kingdom
Mohsen Guizani, Mohamed Bin Zayed University of Artificial IntelligenceFollow
Arumugam Nallanathan, The School of Electronic Engineering and Computer Science, Queen Mary University of London, London, E1 4NS, United Kingdom

Document Type

Article

Publication Title

arXiv

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 sixth generation (6G) network requirements, 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 6G 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 cache-aided NOMA technology, we summarize the performance goals of cache-aided NOMA systems, present the associated design challenges, and categorize related recent literature based on their application verticals. Concomitant standardization activities and open research challenges are highlighted as well. © 2022, CC BY.

DOI

10.48550/arXiv.2205.05321

Publication Date

5-11-2022

Keywords

Queueing networks, Standardization, Caching, Frequency domains, Low latency, Multiple access, Multiple access scheme, Network requirements, Non-orthogonal, Non-orthogonal multiple access, Time domain, User fairness, Surveys, Information Theory (cs.IT), Information Theory (math.IT), Networking and Internet Architecture (cs.NI)

Comments

Preprint: arXiv

Archived with thanks to arXiv

Preprint License: CC by 4.0

Uploaded 03 June 2022

Recommended Citation

D. Bepari et al, "A Survey on Cache-Aided NOMA for 6G Networks", arXiv, May 2022, doi: 10.48550/arXiv.2205.05321