Improved Handover Through Dual Connectivity in 5G mmWave Mobile Networks

Michele Polese, Marco Giordani, Marco Mezzavilla, Sundeep Rangan, Michele Zorzi

Research output: Contribution to journalArticle

Abstract

The millimeter wave (mmWave) bands offer the possibility of orders of magnitude greater throughput for fifth generation (5G) cellular systems. However, since mmWave signals are highly susceptible to blockage, channel quality on any one mmWave link can be extremely intermittent. This paper implements a novel dual connectivity protocol that enables mobile user equipment (UE) devices to maintain physical layer connections to 4G and 5G cells simultaneously. A novel uplink control signaling system combined with a local coordinator enables rapid path switching in the event of failures on any one link. This paper provides the first comprehensive end-to-end evaluation of handover mechanisms in mmWave cellular systems. The simulation framework includes detailed measurement-based channel models to realistically capture spatial dynamics of blocking events, as well as the full details of MAC, RLC and transport protocols. Compared to conventional handover mechanisms, the study reveals significant benefits of the proposed method under several metrics.

Original languageEnglish (US)
JournalIEEE Journal on Selected Areas in Communications
DOIs
StateAccepted/In press - Jun 25 2017

Fingerprint

Millimeter waves
Wireless networks
Network protocols
Telecommunication links
Throughput

Keywords

  • 5G
  • 5G mobile communication
  • blockage
  • Handover
  • handover
  • Long Term Evolution
  • millimeter wave
  • mobility
  • multi-connectivity
  • Robustness
  • Switches

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Improved Handover Through Dual Connectivity in 5G mmWave Mobile Networks. / Polese, Michele; Giordani, Marco; Mezzavilla, Marco; Rangan, Sundeep; Zorzi, Michele.

In: IEEE Journal on Selected Areas in Communications, 25.06.2017.

Research output: Contribution to journalArticle

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