April 02, 2018

Zero-Zero Mobility: Intra-Frequency Handovers with Zero Interruption and Zero Failures

  • Lobinger A.
  • Martikainen H.
  • Viering I.
  • Wegmann B.

Today's intra-frequency hard handovers in LTE suffer from interruption even if they are successful, and from a risk of failures. The next generation ?New Radio? will introduce more strict requirements which cannot be fulfilled with the traditional hard handover concept. Namely, a handover with 0ms interruption is mandated, and extreme reliability (URLLC services) will not tolerate any mobility failures. Consequently, softer handover concepts where the UE is multi-connected to source and one or more targets are already under discussion. This paper will investigate such a method using the well-known dual connectivity principle and evaluates the performance in terms of robustness/reliability and signaling costs.

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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 ...