Reliable and low-latency fronthaul for tactile internet applications

Ghizlane Mountaser, Toktam Mahmoodi, Osvaldo Simeone

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

With the emergence of Cloud-RAN as one of the dominant architectural solutions for the next-generation mobile networks, the reliability and latency on the fronthaul (FH) segment become critical performance metrics for applications such as the Tactile Internet. Ensuring FH performance is further complicated by the switch from point-to-point dedicated FH links to packet-based multi-hop FH networks. This change is largely justified by the fact that packet-based fronthauling allows the deployment of FH networks on the existing Ethernet infrastructure. This paper proposes to improve the reliability and latency of packet-based fronthauling by means of multi-path diversity and erasure coding of the MAC frames transported by the FH network. Under a probabilistic model that assumes a single service, the average latency required to obtain reliable FH transport and the reliability-latency tradeoff is first investigated. The analytical results are then validated and complemented by a numerical study that accounts for the coexistence of the enhanced mobile broadband and ultra-reliable low-latency services in fifth-generation networks by comparing orthogonal and non-orthogonal sharing of FH resources.

Original languageEnglish (US)
Article number8476563
Pages (from-to)2455-2463
Number of pages9
JournalIEEE Journal on Selected Areas in Communications
Volume36
Issue number11
DOIs
StatePublished - Nov 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Keywords

  • 5G
  • Cloud-RAN
  • Ethernet
  • Tactile Internet
  • fronthaul
  • low-latency
  • reliability

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