학술논문

Two-Tier Multi-Rate Slotted ALOHA for OWC/RF-Based IoT Networks
Document Type
Periodical
Source
IEEE Communications Letters IEEE Commun. Lett. Communications Letters, IEEE. 27(4):1190-1194 Apr, 2023
Subject
Communication, Networking and Broadcast Technologies
Internet of Things
Radio frequency
Wide area networks
Optical receivers
Signal to noise ratio
Optical filters
Protocols
Internet of Things (IoT)
optical wireless communications (OWC)
slotted ALOHA (SA)
Language
ISSN
1089-7798
1558-2558
2373-7891
Abstract
We consider a massive Internet of Things (IoT) scenario where indoor IoT devices access the network via optical wireless communication (OWC) IoT systems that relay data via a backhaul radio frequency (RF) low-power wide-area network (LP WAN). We propose a novel two-tier multi-rate Slotted ALOHA (SA) system model to design and analyse such hybrid OWC/RF networks. For a particular hybrid OWC/RF setup, we present an in-depth numerical investigation that provides insights into the proposed two-tier multi-rate hybrid OWC/RF SA system design.