Coexistence of WiFi and LiFi toward 5G: Concepts, opportunities, and challenges

Moussa Ayyash, Hany Elgala, Abdallah Khreishah, Volker Jungnickel, Thomas Little, Sihua Shao, Michael Rahaim, Dominic Schulz, Jonas Hilt, Ronald Freund

Research output: Contribution to journalArticlepeer-review

376 Scopus citations


Smart phones, tablets, and the rise of the Internet of Things are driving an insatiable demand for wireless capacity. This demand requires networking and Internet infrastructures to evolve to meet the needs of current and future multimedia applications. Wireless HetNets will play an important role toward the goal of using a diverse spectrum to provide high quality-of-service, especially in indoor environments where most data are consumed. An additional tier in the wireless HetNets concept is envisioned using indoor gigabit small-cells to offer additional wireless capacity where it is needed the most. The use of light as a new mobile access medium is considered promising. In this article, we describe the general characteristics of WiFi and VLC (or LiFi) and demonstrate a practical framework for both technologies to coexist. We explore the existing research activity in this area and articulate current and future research challenges based on our experience in building a proof-of-concept prototype VLC HetNet.

Original languageEnglish (US)
Article number7402263
Pages (from-to)64-71
Number of pages8
JournalIEEE Communications Magazine
Issue number2
StatePublished - Feb 2016

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


  • IEEE 802.11 Standard
  • Lighting
  • MIMO
  • Mobile communication
  • Optical attenuators
  • Radio frequency
  • Wireless communication


Dive into the research topics of 'Coexistence of WiFi and LiFi toward 5G: Concepts, opportunities, and challenges'. Together they form a unique fingerprint.

Cite this