October 01, 2018

Stand-alone LTE in unlicensed spectrum: Radio Challenges, Solutions, and Performance of MulteFire

  • Frederiksen F.
  • Kuusela M.
  • Pedersen K.
  • Rosa C.

The deployment of standalone LTE radio technology in unlicensed spectrum can enable new business cases by leveraging the assets of LTE to industry players not having access to licensed spectrum. With this objective in mind the MulteFire Alliance has recently finalized first release of the MulteFire standard specifications, which in fact make the deployment of standalone LTE radio technology possible in the 5GHz unlicensed spectrum. MulteFire combines the simplicity of deployment of WiFi with the spectral efficiency and carrier-grade quality of LTE. Though originally thought for enhanced mobile broadband experience, deployment of standalone LTE in unlicensed spectrum is also suited for IoT applications as it inherently supports many connected devices and it can offer more reliable communication compared to other competing technologies working in the unlicensed spectrum. This article provides an overview of the research challenges and solutions of deploying LTE radio technology in unlicensed spectrum. We summarize the main regulatory requirements in the 5GHz unlicensed spectrum, and describe the needed modifications to the LTE specifications; We also demonstrate by means of detailed system level simulations how MulteFire can improve the system capacity and coverage as compared to WiFi in specific propagation environments and small cell deployments.

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Recent Publications

January 01, 2019

Friendly, appealing or both? Characterising user experience in sponsored search landing pages

  • Bron M.
  • Chute M.
  • Evans H.
  • Lalmas M.
  • Redi M.
  • Silvestri F.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Many of today's websites have recognised the importance of mobile friendly pages to keep users engaged and to provide a satisfying user experience. However, next to the experience provided by the sites themselves, ...

January 01, 2019

Analyzing uber's ride-sharing economy

  • Aiello L.
  • Djuric N.
  • Grbovic M.
  • Kooti F.
  • Lerman K.
  • Radosavljevic V.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Uber is a popular ride-sharing application that matches people who need a ride (or riders) with drivers who are willing to provide it using their personal vehicles. Despite its growing popularity, there exist ...

January 01, 2019

The paradigm-shift of social spambots: Evidence, theories, and tools for the arms race

  • Cresci S.
  • Petrocchi M.
  • Pietro R.
  • Spognardi A.
  • Tesconi M.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Recent studies in social media spam and automation provide anecdotal argumentation of the rise of a new generation of spambots, so-called social spambots. Here, for the first time, we extensively study this novel ...