RADWIN Fibre in Motion for

Effective Train-To-Track

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Effective Train-To-Track

Communication Solutions

Harish Dewani

Why Wireless Train-to-Track Communications?

• Real Time On-Board CCTV

• Passenger Information Systems (PIS) & Advertising

• Broadband Internet for passengers

• Signaling and CBTC

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• High capacity

• Guaranteed uplink for CCTV

• Long range coverage

• Simple & fast installation

Train-to-Ground Communications – Requirements

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• Simple & fast installation

• Easy maintenance

• Non-Line-of-Sight performance

• Tunnels

• QoS for high priority services

• Fast Handover

• Reliability and robustness

Train to Ground Communications – Requirements

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• Reliability and robustness

• Railway / Metro certifications

(EMC, vibrations)

Common Technologies are Not Optimal

• Best effort service - no secured

bandwidth (SLA)

• Limited bandwidth - not enough for

CCTV

• Limited coverage - 150 meters

• Interference from passengers Wi-Fi

Wi-Fi / MeshWi-Fi / Mesh

CellularCellular

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• Low capacity – not enough

for CCTV / PIS / Internet

• Expensive

Leaky CableLeaky Cable

• Network control

• Availability in emergency

• No guaranteed service level for priority service

(CCTV, PA)

• Limited uplink ( not enough for CCTV)

Cellular

3G / 4G

Cellular

3G / 4G

RADWIN vs. 802.11n Wi-Fi solution in NLOS Scenario

• 4 streams of video over Wi-Fi

• Capacity is unstable

• 4 streams of video over

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Throughput versus Time

Stable bandwidth is critical for video quality!

• 4 streams of video over

RADWIN solution

• Capacity is fixed

About RADWIN

• Leading provider of Sub-6 GHz broadband wireless solutions

for telecom operators, transportation, public safety, critical facilities, oil &

gas (PtP, PtMP and Mobility Solutions)

• Offers carrier-class high capacity, wireless solutions for fixed and mobile

connectivity

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• Proven installed base in over

150 countries

• Global presence with offices in

major locations and a network of partners

RADWIN Presence Worldwide

UK

US

Mexico

Israel

Russia

India

Philippines

El Salvador

Spain

Thailand

Poland

China

Senegal

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Peru

Brazil

Singapore

South Africa

Columbia

Indonesia

Deployed in Over150 Countries

18 Offices World Wide

Presence in India

� Since 2005

� Indian HQ at New Delhi, Mohan Cooperative

• Sales / Marketing Office

• Technical Support Centre - APAC

• Pre and Post Sales support

• Component level Repairing centre – RMA Centre

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Huge Installed Base….

• Over 120,000 Radios deployed in India.

• Majority of Installation are in Telcos, ISPs, Railways, Defense,

Mines, and State Government

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Few Partners & Customers….

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Market Segments

• Telcos, Cellular Backhaul and enterprise Connectivity

• BSNL, Bharti, Tata, MTS, Aircel, Idea, Vodafone

• Surveillance, Video Connectivity

• Sesa Goa (Mines), Indian Army (Borders), IIT Madras (Chennai), ONGC (URAN

Area Mumbai), SER (Platform CCTV)

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Area Mumbai), SER (Platform CCTV)

• Oil & Gas, Voice, Data and Video Connectivity

• ONGC , Oil India, Indian Oil, HPCL – Data Connectivity ..

• Transportation, InterStations, Plarform CCTV and Inter-Office Connectivity

Market Segments (Continued)

• Defense, Border Surveillance, Exchange and Data Connectivity

• Indian Army (Multiple Commands), Assam Rifle

• Utility, Mines and InterOffice Connectivity, Power Station connectivity for Critical Data

• SESA Goa , Neiveli Lignite Mines, Delhi Transco

• State Govts,

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• State Govts, Data Connectivity

• Ajmer District School connectivity

• MP Check Post Connectivity

• UPPCL

• APDRP Project

RADWIN Solution Underground

Mobile Radio units installed

onboard the train - front and back

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Radio Base Stations deployed

along the tunnel every ~1Km

RADWIN Solution Above Ground

� Radio Base Stations (HBS) deployed along the

route, supporting multiple trains

simultaneously

� Two antennas directed eastbound and

westbound for extended coverage

� Optional redundancy

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� Radio Mobile unit (HMU) installed on-

board the train, connected to 2 x train

antennas installed on top

� Optional dual radio + antennas to

improve redundancy and coverage

• Installed and proven to deliver 90Mbps

per base station

• Extended coverage: up to 1 Km

RADWIN FiberinMotion™ Technology (1)

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underground, or 5 Km above ground

• Uplink / Downlink configurable traffic

• Guaranteed bandwidth per train

• Seamless handover < 50msec

• Complete redundancy

• Multiband - Multiple frequencies in

RADWIN FiberinMotion™ Technology (2)

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same platform

• EN50155 and EN50121 certified

Case Studies

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Evaluation vs. existing Wi-Fi solution

Services required

• Real-time CCTV

• 8 cameras – 10 Mbps uplink

Metro Operator in South America

• PA & VoIP

• 1 Mbps uplink / downlink

• PIS

• Downlink

Results

• 88 Mbps per base station

• Minimum 30 Mbps per train (15 full

duplex)

• Minimal number of base stations

• Fast handover <50msec

• Redundancy

Metro Moscow (Russia): Broadband Wi-Fi for Passengers

• New project won by RADWIN

• Metro Moscow

• No. 4 in the world (6.7 M passengers

per day)

• 188 stations, 300 Km system

• Provide broadband Wi-Fi to passengers

• Use same solution for future PIS

• First Line already deployed

• 90 Mbps per Base station

• Base station every ~900 meters