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LTE as an alternative to GSM-R

Overview of the PhD project titled “Communication Technologies Support to Railway Infrastructure & Operations”
by Aleksander Sniady on 10 March 2013

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Transcript of LTE as an alternative to GSM-R

picture by Andy Dutton benefits of in a railway context safety-critical
railway signaling
(ETCS) Can LTE become a railway communication technology? LTE as an alternative to GSM-R Aleksander Sniady & Jose Soler voice
communication
for railways efficient
QoS
mechanisms train
speed eNodeB
density network
load packet prioritization preemption
mechanisms Future railway communication required voice functionality:
group calls
functional addressing
preemption
prioritization Networks Technology and Service Platforms Group
DTU Fotonik
Technical University of Denmark
{alesn, joss}@fotonik.dtu.dk RobustRailS project supported by the Danish Council for Strategic Research packet-switched
transmission efficient
radio
interface low delay flexible
resource
usage coverage &
transmission
power number
of users safety vs best effort
applications Simulation scenario of
a real railway line in Denmark How to address
these challenges? Our main research question: affected by 3 elements ETCS requirements:
received signal strength
message delay
delivery success rate ETCS supervision ETCS on board ailways higher
resource
utilization support for advanced data services higher
throughput Insufficient capacity Low
resource
utilization Limited support for data services communication
technology
designed for
railways
(ERTMS) railway
digital
signaling
(ETCS) voice
communication
for railways Why do we need an alternative to consists of three challenges. ? LTE: a fully
packet-switched
network new
competing
standards
for voice OPNET
simulations
of the full LTE
network ETCS
over
LTE Current results An overview of GSM-R technology and its shortcomings. Impact of the LTE radio access topology on the performance of ETCS signaling. Data integrity of ETCS signaling delivered over LTE network. Performance of LTE in high speed railway scenarios. Contact:
Aleksander Sniady

Jose Soler alesn@fotonik.dtu.dk joss@fotonik.dtu.dk
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