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Massive access of static and mobile users via reconfigurable intelligent surfaces: protocol design and performance analysis

Massive access of static and mobile users via reconfigurable intelligent surfaces: protocol design and performance analysis
Massive access of static and mobile users via reconfigurable intelligent surfaces: protocol design and performance analysis
The envisioned wireless networks of the future entail the provisioning of massive numbers of connections, heterogeneous data traffic, ultra-high spectral efficiency, and low latency services. This vision is spurring research activities focused on defining a next generation multiple access (NGMA) protocol that can accommodate massive numbers of users in different resource blocks, thereby, achieving higher spectral efficiency and increased connectivity compared to conventional multiple access schemes. In this article, we present a multiple access scheme for NGMA in wireless communication systems assisted by multiple reconfigurable intelligent surfaces (RISs). In this regard, considering the practical scenario of static users operating together with mobile ones, we first study the interplay of the design of NGMA schemes and RIS phase configuration in terms of efficiency and complexity. Based on this, we then propose a multiple access framework for RIS-assisted communication systems, and we also design a medium access control (MAC) protocol incorporating RISs. In addition, we give a detailed performance analysis of the designed RIS-assisted MAC protocol. Our extensive simulation results demonstrate that the proposed MAC design outperforms the benchmarks in terms of system throughput and access fairness, and also reveal a trade-off relationship between the system throughput and fairness.
Array signal processing, MAC efficiency, Media Access Protocol, NOMA, Next generation multiple access, Protocols, Throughput, Wireless networks, Wireless sensor networks, access fairness, reconfigurable intelligent surfaces
1558-0008
1253 - 1269
Cao, Xuelin
5f8520a8-3869-476c-9a07-8edff001e305
Yang, Bo
25f7291b-230c-4812-98f7-8d617d6fa0f7
Huang, Chongwen
cb95630b-82c2-45c1-959e-b636774b8c61
Alexandropoulos, George C.
652f87e4-3c86-4e0d-9166-994c55611b0f
Yuen, Chau
1b26b32e-5822-4bf8-b39b-2ea02385037d
Han, Zhu
28e29deb-d470-4165-b198-0923aeac3689
Poor, H. Vincent
2ce6442b-62db-47b3-8d8e-484e7fad51af
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Cao, Xuelin
5f8520a8-3869-476c-9a07-8edff001e305
Yang, Bo
25f7291b-230c-4812-98f7-8d617d6fa0f7
Huang, Chongwen
cb95630b-82c2-45c1-959e-b636774b8c61
Alexandropoulos, George C.
652f87e4-3c86-4e0d-9166-994c55611b0f
Yuen, Chau
1b26b32e-5822-4bf8-b39b-2ea02385037d
Han, Zhu
28e29deb-d470-4165-b198-0923aeac3689
Poor, H. Vincent
2ce6442b-62db-47b3-8d8e-484e7fad51af
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Cao, Xuelin, Yang, Bo, Huang, Chongwen, Alexandropoulos, George C., Yuen, Chau, Han, Zhu, Poor, H. Vincent and Hanzo, Lajos (2022) Massive access of static and mobile users via reconfigurable intelligent surfaces: protocol design and performance analysis. IEEE Journal on Selected Areas in Communications, 40 (4), 1253 - 1269. (doi:10.1109/JSAC.2022.3145908).

Record type: Article

Abstract

The envisioned wireless networks of the future entail the provisioning of massive numbers of connections, heterogeneous data traffic, ultra-high spectral efficiency, and low latency services. This vision is spurring research activities focused on defining a next generation multiple access (NGMA) protocol that can accommodate massive numbers of users in different resource blocks, thereby, achieving higher spectral efficiency and increased connectivity compared to conventional multiple access schemes. In this article, we present a multiple access scheme for NGMA in wireless communication systems assisted by multiple reconfigurable intelligent surfaces (RISs). In this regard, considering the practical scenario of static users operating together with mobile ones, we first study the interplay of the design of NGMA schemes and RIS phase configuration in terms of efficiency and complexity. Based on this, we then propose a multiple access framework for RIS-assisted communication systems, and we also design a medium access control (MAC) protocol incorporating RISs. In addition, we give a detailed performance analysis of the designed RIS-assisted MAC protocol. Our extensive simulation results demonstrate that the proposed MAC design outperforms the benchmarks in terms of system throughput and access fairness, and also reveal a trade-off relationship between the system throughput and fairness.

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More information

Accepted/In Press date: 16 December 2021
e-pub ahead of print date: 26 January 2022
Published date: 1 April 2022
Keywords: Array signal processing, MAC efficiency, Media Access Protocol, NOMA, Next generation multiple access, Protocols, Throughput, Wireless networks, Wireless sensor networks, access fairness, reconfigurable intelligent surfaces

Identifiers

Local EPrints ID: 455608
URI: http://eprints.soton.ac.uk/id/eprint/455608
ISSN: 1558-0008
PURE UUID: 594d6045-8f42-4ca5-a07b-ba04a7ee0a21
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 29 Mar 2022 16:32
Last modified: 09 Nov 2022 02:32

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Contributors

Author: Xuelin Cao
Author: Bo Yang
Author: Chongwen Huang
Author: George C. Alexandropoulos
Author: Chau Yuen
Author: Zhu Han
Author: H. Vincent Poor
Author: Lajos Hanzo ORCID iD

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