FD-OMAC: A Novel Full-Duplex Optical Media Access Control for IEEE 802.15.7

Anjali Gupta,Monica Bhutani,Brejesh Lall,Abhishek Dixit

doi:10.1109/access.2021.3124975

Abstract

Optical wireless communication (OWC), the IEEE 802.15.7 standard (revised 2018) is developed in normative reference to low-rate wireless personal area networks IEEE 802.15.4 standard. One significant difference between the two standards is the highly directional transmitters in the OWC networks. This difference opens up the possibility of adding full-duplex communication to wireless networks. Our work proposes adding full-duplex functionality in the contention-free period (CFP) of the OWC media access control (MAC) layer. We justify the significance of our proposal by implementing IEEE 802.15.7 resource allocation scheme for both our proposed full-duplex optical MAC (FD-OMAC) and the IEEE 802.15.7 MAC. Our simulation results demonstrate that the proposed work improves the spectral efficiency in the CFP without compromising delays. We also discuss the minor changes required in the IEEE 802.15.7 MAC for implementing FD-OMAC. We further extend the FD-OMAC to a multiple access point network and evaluate its performance in comparison with IEEE 802.15.7 MAC.

Highlights

Internet traffic is experiencing unprecedented growth due to increased global mobile technology penetration and mushrooming data-hungry real-time applications
We present a comparison of full-duplex optical MAC (FD-OMAC) and IEEE-media access control (MAC)
From (9), service delay is directly proportional to the BBBB and the service delay in the contention-free period (CFP) reduces with decreasing SSSS

Summary

Introduction

Internet traffic is experiencing unprecedented growth due to increased global mobile technology penetration and mushrooming data-hungry real-time applications. The report in [2] points out that regardless of the data capacity increased indoors, all of it will be exhausted These increasing data demand trends suggest updating last-mile wireless networks, and the solutions constitute 5G technology, enhanced wireless fidelity (Wi-Fi 6), optical wireless communication (OWC) or visible light communication (VLC), and light fidelity (Li-Fi). OWC and Li-Fi holds the key to greener, safer, and securer communication and can be used in radio frequency (RF) interference-sensitive environments. It uses unlicensed electromagnetic spectrum (wavelength from 10000 nm to 190 nm) and can be 100 times faster than Wi-Fi, i.e., its transmission speeds can go over 100 Gbps [3]. Various standardization activities [4]-[7] target to facilitate the smooth commercialization of OWC technology

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