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T. Berisha, P. Svoboda, S. Ojak, C. Mecklenbräuker:
"Benchmarking In-Train Coverage Measurements of Mobile Cellular Users";
Talk: IEEE 86th Vehicular Technology Conference (VTC2017-Fall), Toronto; 09-24-2017 - 09-27-2017; in: "IEEE 86th Vehicular Technology Conference (VTC2017-Fall)", IEEE Xplore, (2017), ISBN: 978-1-5090-5935-5; 1 - 5.

Providing a reliable connectivity for passengers on
trains requires to identify and optimize No Service (NoS) areas
along a railway track in live networks. We perform a spatial
analysis of heterogeneity effect for a mobile user capable to
connect on a different Radio Access Technology (RAT). The
analysis is supported by real-world measurements, conducted on
new regional trains along Austrian railways. Based on established
RF similarities and by spatially clustering approximately samesize grid-blocks along railway tracks, we give insights in terms of
coverage implications to handovers and outages. The handover
rate is increased up to four times on presence of insignificant NoS
areas. To mitigate the vehicle chassis effect, we equip the train
under test with a Moving Relay Node (MRN) and investigate
the coverage improvements and outage rate for mobile users
under different scenarios. On-board the train with MRN, the
outage rate is decreased up to 3% along a railway equipped with
dedicated Base Stations (BSs).

Providing a reliable connectivity for passengers on
trains requires to identify and optimize No Service (NoS) areas
along a railway track in live networks. We perform a spatial
analysis of heterogeneity effect for a mobile user capable to
connect on a different Radio Access Technology (RAT). The
analysis is supported by real-world measurements, conducted on
new regional trains along Austrian railways. Based on established
RF similarities and by spatially clustering approximately samesize grid-blocks along railway tracks, we give insights in terms of
coverage implications to handovers and outages. The handover
rate is increased up to four times on presence of insignificant NoS
areas. To mitigate the vehicle chassis effect, we equip the train
under test with a Moving Relay Node (MRN) and investigate
the coverage improvements and outage rate for mobile users
under different scenarios. On-board the train with MRN, the
outage rate is decreased up to 3% along a railway equipped with
dedicated Base Stations (BSs).

http://dx.doi.org/10.1109/VTCFall.2017.8288292

http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8288292