A Random Access Protocol for RIS-Aided Wireless Communications

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)
35 Downloads (Pure)

Abstract

Reconfigurable intelligent surfaces (RISs) are arrays of passive elements that can control the reflection of the incident electromagnetic waves. While RISs are particularly useful to avoid blockages, the protocol aspects for their implementation have been largely overlooked. In this paper, we devise a random access protocol for a RIS-assisted wireless communication setting. Rather than tailoring RIS reflections to meet the positions of users’ equipment (UEs), our protocol relies on a finite set of RIS configurations designed to cover the area of interest. The protocol is comprised of a downlink training phase followed by an uplink access phase. During these phases, a base station (BS) controls the RIS to sweep through its configurations. The UEs then receive training signals to measure their channel quality for the different RIS configurations and refine their access policies. Numerical results show that our protocol increases the average number of successful access attempts; however, at the expense of increased access delay due to the realization of a training period. Promising results are further observed in scenarios with a high access load.
Original languageEnglish
Title of host publication2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC)
Number of pages5
PublisherIEEE Communications Society
Publication date6 Jul 2022
Pages1-5
Article number9833984
ISBN (Print)978-1-6654-9456-4
ISBN (Electronic)9781665494557
DOIs
Publication statusPublished - 6 Jul 2022
Event2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC) - Oulu, Finland
Duration: 4 Jul 20226 Jul 2022

Conference

Conference2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC)
LocationOulu, Finland
Period04/07/202206/07/2022
SeriesIEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
ISSN1948-3252

Keywords

  • Training
  • Wireless communication
  • Access protocols
  • Reconfigurable intelligent surfaces
  • Signal processing
  • Throughput
  • Reflection
  • Reconfigurable intelligent surface (RIS)
  • random access

Fingerprint

Dive into the research topics of 'A Random Access Protocol for RIS-Aided Wireless Communications'. Together they form a unique fingerprint.

Cite this