Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloSeamless LTE Connectivity in High Speed Trains
Anno di pubblicazione2016
FormatoElettronico
Autore/iAli Parichehreh, Stefano Savazzi, Leonardo Goratti, Umberto Spagnolini
Affiliazioni autoriPolitecnico di Milano, CNR-IEIIT
Autori CNR e affiliazioni
  • STEFANO SAVAZZI
Lingua/e
  • inglese
AbstractHigh-speed train (HST) is revitalizing the train as a preferred mid-range transportation system. The provision of broadband Internet connectivity onboard trains is one of the key challenges in the competition among train operators. Unprecedented spectral efficiency and data rates (up to 100Mbps in high mobility) of the Universal Mobile Telecommunications System long-term evolution (LTE) are expected to offer the solution for high-speed Internet access onboard in HSTs. Massive wireless access and frequent handovers (HOs) of a large number of users might potentially cause service interruptions, and this, in turn, degrades intolerably the quality of experience (QoE) of users' onboard Internet access. In this paper, we propose a solution based on distributed antenna system that combines directional and omni-directional antennas as train-to-ground radio-access terminals (T-RATs) and LTE femtocells in each carriage. Directional antennas are deployed at both ends of the HST to provide multi-cell access by diversifying the HOs over multiple LTE cells. This mechanism virtually elongates the train size by connecting the front and rear carriages' T-RATs to the faraway eNodeBs and augmenting the number of cells the HST can be simultaneously connected to. An ad hoc distributed load-balancing mechanism that consists in offloading backlogged packets to the on-service T-RATs is mandatorily paired with multi-cell access scheme to tie up with the request of seamless onboard Internet
Lingua abstractinglese
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RivistaWireless communications and mobile computing (Online)
Attiva dal 2001
Editore: John Wiley & Sons, Ltd., - Chichester, UK
Paese di pubblicazione: Regno Unito
Lingua: inglese
ISSN: 1530-8677
Titolo chiave: Wireless communications and mobile computing (Online)
Titolo proprio: Wireless communications & mobile computing (Online)
Titolo abbreviato: Wirel. commun. mob. comput. (Online)
Titoli alternativi:
  • Wireless (Online)
  • Wireless communications and mobile computing (Online)
  • WCMC (Online)
Numero volume della rivista-
Fascicolo della rivista-
DOI10.1002/wcm.2607
Verificato da refereeSì: Internazionale
Stato della pubblicazionePreprint
Indicizzazione (in banche dati controllate)-
Parole chiavehigh-speed trains, directional antenna, distributed load balancing, quality of service
Link (URL, URI)http://dx.doi.org/10.1002/wcm.2607
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Note/Altre informazioni-
Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
Moduli CNR
  • ICT.P07.005.001 : Reti wireless integrate per accesso ad alta velocita'
Progetti Europei-
Allegati
Seamless LTE connectivity in high-speed trains (documento privato )
Descrizione: In this paper, we propose a solution based on distributed antenna system that combines directional and omni-directional antennas as train-to-ground radio-access terminals (T-RATs) and LTE femtocells in each carriage. Directional antennas are deployed at both ends of the HST to provide multi-cell access by diversifying the HOs over multiple LTE cells. This mechanism virtually elongates the train size by connecting the front and rear carriages' T-RATs to the faraway eNodeBs and augmenting the number of cells the HST can be simultaneously connected to.
Tipo documento: application/pdf