5g4rail: perspectives offered by 5g for critical services ... · r-gsm band er-gsm band 3) gsm-r...
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5G4Rail: Perspectives offered by 5G for critical services –the specific case of FRMCS for RailDr. Patrick Marsch, Senior Project Manager, Digital Rail, Digitale Schiene DeutschlandDr. Karsten Kemeter, CTO Communication & Engineering at Deutsche BahnDigital Transport Days 2019 Helsinki, 7 October 2019
Deutsche Bahn AG | Helsinki | 7 October 2019
Substantial improvement of punctionality
Twice the number of passengers by 2030
More goods on the rail
Moving towards the Deutschlandtakt
Fundamental contribution to combatclimate change
IncreasedCapacity
HigherEfficiency
ImprovedReliability
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Expectations from government and society ask forimprovements in the rail system along 3 dimensions
Digitale Schiene Deutschland
Digital technologies open up completely newopportunities for rail operation
AI-based capacity management plans and controls trains and tracks
Digitalised passenger flow managementand passenger information
Incidences are automaticallydetected and resolved
Automated train operation
Trains detect environment and possible hazards
Train operation in optimal distances
Digitale Schiene Deutschland
Rail applications require considerable bandwidth andlow latency telecommunication features
Today ETCS Level 2
~ 30 kbps / train
Ground-to-train (Downlink)
Train-to-ground(Uplink)
During migration(2025 – 2033)
1) see ECC Report 294 (here showing numbers incl. critical video)2) with E2E latency requirements partially <10 ms, see GPP TR 22.889
Video, Radar,Lidar
Video, Radar,Lidar
Processing
Processing
Automateddetection of hazards
Safe passenger(dis-)embarkation
Video-based remote traincontrol and remote sensoraccess in incidence cases
Sample use cases requiringhigh bandwidth and low latency2):
DB examples
After migration(beyond 2034)
~3.5 Mbps / train
7.42
4.38
UIC-consolidated numbers(Mbps per train)
Dr. Patrick Marsch and Dr. Karsten Kemeter | Deutsche Bahn AG | Helsinki | 7 October 2019
Why 5G?
Dr. Patrick Marsch and Dr. Karsten Kemeter | Deutsche Bahn AG | Helsinki | 7 October 2019
Service-Based Architecture, Control/User Plane Split (COTS Cloud ready, enables more flexible function placement, better scalability)
Novel QoS Management Architecture(allowing for the definition of quality of service flowsand differentiation / preemption of services on packet level)
E2E Network Slicing(allowing the creation of E2E logical networks, allowing e.g. MNOs to operate „railway slices“ in their networks)
Better adaptation to different deployment scenarios(through more standardised function split options)
Reduced user plane latency and increased reliability
Better native support of• (Massive) multiple-input multiple-output (MIMO)• Coordinated multi-point (CoMP)
with more rail scenario specificcustomisation options
Per
form
ance
Native Inter-RAT Support(Multi-connectivity and mobility across 3GPP technologies, Wi-Fi, satelite)
Reduced Control Plane Latency(through novel connected_inactive state, allowingfor faster time from idle to connected and fasterpaging)
Benefits of a 5G Core Network as such
Benefits of a 5G Radio Access Network as such
Additional benefits of 5G Core + Radio
DB’s Envisioned FRMCS / 5G Introduction & Migration Timeline
Dr. Patrick Marsch and Dr. Karsten Kemeter | Deutsche Bahn AG | Helsinki | 7 October 2019
2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036
Ruralareas
(and ultimatelycountry-wide)
Urbanareas
1.9 / 2.3GHz band
R-GSMband
ER-GSMband 3)
GSM-R
FRMCS / 5G in 10 MHz TDD
Network-wide FRMCS / 5G deployment
First local FRMCS / 5G deployments
FRMCS Standardisation
FRMCS / 5GResearch, field trials, pilots
1) minimum 5G bandwidth and exact carrier placement still under investigation2) in consideration of remaining GSM-R connectivity needs3) the lower 1.4 MHz of the ER-GSM band are in Germany likely only available until 2033
FRMCS / 5G initially in 2x 3.6 MHz 1),later successively more 2)
5G in 2x 5.6 MHz
Tentative