Handover Performance and Power Consumption Analysis of LTE Mobile Relays

Muhammad Tayyab, G. P. Koudouridis, X. Gelabert, R. Jantti

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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Abstract

Mobile relay node (MRN) is one of the cheaper options for reliable communication when users are moving by public transport (i.e. bus, tram, train, subway, etc.), especially in urban areas. Critically, MRNs need to maintain a backhaul connection with the fixed infrastructure via a donor eNB, (DeNB). If the MRN fails to successfully handover (HO) from one DeNB to another, it will create a single point of failure, i.e. the connection of all UEs connected to MRN will be dropped. In this paper, we address the HO performance of a MRN including a power consumption analysis thereof. We investigate the potential gains in terms of HO rate, HO failure ratio (HOFR), ping-pong (PP) rate and power consumption (both at UE and eNB) when a MRN is deployed on a bus traveling along the cell edges of surrounding macro BSs. We also look over the MRN HO failure cases to identify the causes of HO failures that are more critical for the UEs onboard. Numerical results indicate that deploying a MRN on the roof-top of a bus improves the HO rates 15%, HOFR 8%, PP rate 17%, UE power consumption 21%, and eNB power consumption 14% on average for all simulated cases. We have also established that UL transmission errors are the most dominant causes of turning MRN to a single point of failure during a HO.

Original languageEnglish
Title of host publication2020 IEEE 92nd Vehicular Technology Conference, VTC 2020-Fall - Proceedings
PublisherIEEE
ISBN (Electronic)9781728194844
DOIs
Publication statusPublished - Nov 2020
MoE publication typeA4 Article in a conference publication
EventIEEE Vehicular Technology Conference - Virtual, Online, Canada
Duration: 18 Nov 202016 Dec 2020
Conference number: 92

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1090-3038
ISSN (Electronic)2577-2465

Conference

ConferenceIEEE Vehicular Technology Conference
Abbreviated titleVTC
CountryCanada
CityVirtual, Online
Period18/11/202016/12/2020

Keywords

  • handover
  • LTE
  • Mobile relay node (MRN)
  • performance evaluation
  • power consumption
  • simulation

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