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Article

A Comprehensive Open-Source Simulation Framework for LiFi Communication

1
Department of Electrical and Electronics Engineering, Auckland University of Technology (AUT), Auckland 1010, New Zealand
2
School of Science and Engineering, Flinders University, Adelaide 5000, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Stanislav Zvanovec
Sensors 2021, 21(7), 2485; https://doi.org/10.3390/s21072485
Received: 28 February 2021 / Revised: 27 March 2021 / Accepted: 31 March 2021 / Published: 2 April 2021
(This article belongs to the Special Issue Visible Light Communication, Networking, and Sensing)
Light Fidelity (LiFi) is a new candidate for wireless networking that utilizes the visible light spectrum and exploits the existing lighting infrastructure in the form of light-emitting diodes (LEDs). It provides point-to-point and point-to-multipoint communication on a bidirectional channel at very high data rates. However, the LiFi has small coverage, and its optical gain is closely related to the receiver’s directionality vis-à-vis the transmitter, therefore it can experience frequent service outages. To provide reliable coverage, the LiFi is integrated with other networking technologies such as wireless fidelity (WiFi) thus forming a hybrid system. The hybrid LiFi/WiFi system faces many challenges including but not limited to seamless integration with the WiFi, support for mobility, handover management, resource sharing, and load balancing. The existing literature has addressed one or the other aspect of the issues facing LiFi systems. There are limited free source tools available to holistically address these challenges in a scalable manner. To this end, we have developed an open-source simulation framework based on the network simulator 3 (ns-3), which realizes critical aspects of the LiFi wireless network. Our developed ns-3 LiFi framework provides a fully functional AP equipped with the physical layer and medium access control (MAC), a mobility model for the user device, and integration between LiFi and WiFi with a handover facility. Simulation results are produced to demonstrate the mobility and handover capabilities, and the performance gains from the LiFi-WiFi hybrid system in terms of packet delay, throughput, packet drop ratio (PDR), and fairness between users. The source code of the framework is made available for the use of the research community. View Full-Text
Keywords: VLC simulation; LiFi; VLC; ns-3; 6G; WiFi; simulation tool VLC simulation; LiFi; VLC; ns-3; 6G; WiFi; simulation tool
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MDPI and ACS Style

Ullah, S.; Rehman, S.U.; Chong, P.H.J. A Comprehensive Open-Source Simulation Framework for LiFi Communication. Sensors 2021, 21, 2485. https://doi.org/10.3390/s21072485

AMA Style

Ullah S, Rehman SU, Chong PHJ. A Comprehensive Open-Source Simulation Framework for LiFi Communication. Sensors. 2021; 21(7):2485. https://doi.org/10.3390/s21072485

Chicago/Turabian Style

Ullah, Shakir, Saeed U. Rehman, and Peter H.J. Chong 2021. "A Comprehensive Open-Source Simulation Framework for LiFi Communication" Sensors 21, no. 7: 2485. https://doi.org/10.3390/s21072485

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