TETRA LMR in Transportation Environments
Mission Critical Webinar
October 18, 2012
TETRA in Transportation Environments
PowerTrunk background and availability
of TETRA in the United States
– Jose Martin, EVP and COO
TETRA communications solutions
– Keith Ammons, VP Product Marketing
Transportation case studies
– Chris Ramsden, VP Sales
PowerTrunk Background
Focus Experience Technology Flexibility
Subsidiary of Teltronic S.A.U. Spain with 35 years designing, manufacturing, implementing and supporting LMR systems.
300 digital and analog LMR networks in 50 countries.
Multi-technology P25/TETRA and LTE/WiMax platform that is reliable Ethernet end-to-end
Technological independence from third parties; we develop and own 100 % of the technology.
Readiness to customize.
PowerTrunk TETRA footprint
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New York
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Mexico City
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Bogota
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Sao Paulo
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Rio
Salvador ■
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Buenos Aires
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Lima
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Singapore
■ Seoul
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Melbourne
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Warsaw
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Kiev ■
Istanbul
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Dubai
◘ Zaragoza
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Rabat
Jakarta ■
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Kuala Lumpur
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Cairo ■
Delhi
■ Johannesburg
◘ Headquarters ■ Subsidiary ■ Commercial office ■ Local Customer Service
Countries where PowerTrunk/Teltronic has been awarded TETRA contracts to date
Availability of TETRA in the U.S. (I)
PowerTrunk TETRA-Interoperable D-LMR (TI D-LMR)
equipment was FCC-certified for Part 90 operation (409-430, 450–470 & 806–869 MHz) in early 2010. It does not require any
waivers.
It is named TETRA-Interoperable D-LMR to distinguish it from
non-Part-90-compliant TETRA.
TI D-LMR differs from ETSI TETRA in the value of one of the
parameters of the TETRA modulation (roll-off).
– The difference is operationally insignificant as proven in trials in BC
Hydro in 2009, NJ TRANSIT in 2010, and with New York City Transit
in 2011.
TI D-LMR is fully interoperable with ETSI TETRA equipment
– It is TETRA Interoperability Profile (TIP) compliant in accordance
with TETRA + Critical Communications Association (TCCA) rules.
Availability of TETRA in the U.S. (II)
NJ TRANSIT awarded its RFP 11-018 to Alcatel-Lucent with
PowerTrunk TI D-LMR technology on March 14, 2012.
The FCC granted NJ TRANSIT a license to operate TI D-LMR in
the 809-824/854-869 MHz band on May 18, 2012 (the April 26,
2011 Waiver Order was restricted to 817-824/862-869 MHz).
The September 21, 2012 FCC-issued order authorized TETRA in
frequency bands previously excluded by the April 26,
2011 waiver (i.e.809-817/854-862 MHz).
PowerTrunk customers using TI D-LMR equipment previously
certified under Part 90 rules in 2010—before the TETRA waiver
—can now be upgraded to full ETSI TETRA standards and
operate in the 809-824/854-869 MHz band.
Availability of TETRA in the U.S. (III)
TI D-LMR is currently certificated for use in the 806-809/851-854
MHz band (NPSPAC spectrum). Interoperability with analog FM mutual aid channels is being developed.
Harris proposed a rulemaking to change the Part 90 rules for
NPSPAC frequencies to make PowerTrunk’s equipment not
compliant. Harris’s argument is that TI D-LMR radiates more energy
than OpenSky on the adjacent channels.
However, NPSPAC spectrum consists of 12.5 KHz-spaced channels
with an authorized bandwidth of 20 KHz (i.e. no technology
complies with TIA’s recommendation to prevent “interference” :
ACP > 60 dB. For example, OpenSky offers ACP>21 dB only).
Availability of TETRA in the U.S. (IV)
TI D-LMR offers ACP>7 dB but in turn it provides 87.5 % more data
throughput (36 Kbit/s vs 19.2 Kbit/s). Therefore it requires roughly half the frequencies to achieve the same performance. Considering
the additional energy radiated by TI D-LMR on the adjacent
NPSPAC channels, it is still 40 % more spectrum-efficient for data-
centric applications (e.g. Automatic Vehicle Location).
PowerTrunk’s position is that the Regional Planning Committees
(RPCs) can conduct frequency coordination in NPSPAC spectrum
with TI D-LMR for the same reason they do with other FCC-certified
technologies.
Since Harris’s proposal is not based on any real experience but on
theoretical conclusions, PowerTrunk has proposed to conduct field
trials to determine what’s the true spectrum efficiency of different
technologies in NPSPAC spectrum.
Transportation Communications Solutions
Transportation Communications
Transportation sectors and requirements
TETRA technology and products for transportation
Special applications
Metros / Subways Trams
Railroads
TETRA for Transport
Buses
Voice communication between drivers, control centers, depots, and passengers.
Automatic vehicle location
(AVL) systems. Data services for remote monitoring
of on-board systems. Emergency communications. Communication with maintenance crews.
Railway signaling.
Transport Communications Requirements
Published by ETSI , the main contributors being Motorola & Nokia,
TETRA is a proven open standard used worldwide in Public Safety.
Used in 125 countries: over 2 million users, 1 million+ in Public Safety .
Large Eco-System with multiple vendors equates to a more competitive
marketplace
Outside of North America, TETRA is THE dominant technology used by
Public Safety agencies; Police, Fire, Ems, etc., Transit agencies and
Utilities at local, regional and national levels.
Inherently secure voice and data.
4-slot TDMA architecture over 25 KHz channels; narrowband compliant
6.25 KHz.
Standards body driven by TCCA (TETRA + Critical Communications
Association).
Designed for use in 300 MHz – 1 GHz. Commercially available at global
level in 380-400, 410-430, 450-470 and 806-870 MHz plus some special
bands. Imminent support to extend down to 130 MHz.
TETRA Overview
Excellent cellular-like speech quality.
Full-duplex and half-duplex voice calls.
Private, group, broadcast and emergency calls.
Status and short data messages (text, GPS, …).
IP packet data (4.8, 9.6 and 19.2 Kbps).
Circuit data (7.2, 14.4 and 28.8 Kbps).
Fast call setup (< 0.5 sec)
Direct mode (Mobile to Mobile) operation (DMO).
Peripheral equipment interface (PEI).
Up to 2 X Data Capacity over other Digital LMR
technologies
TETRA Advantages
TETRA Voice Services Individual calls
Group calls
PABX/PSTN calls (with external
gateway)
Group call to/from PABX/PSTN
Broadcast call
Ambience listening (with
dispatcher)
TETRA Data Services Transmission in Circuit Mode with/
without selectable degree of
protection
Connection-oriented Packet Data
Connectionless Packet Data
Multi-Slot Packet Data
Short Data Messages (SDS) types
1, 2, 3, and 4, with / without TL
Concatenated SDS
Status Messages
Up to 3 Secondary Control
Channels
Buses & Trams – Optimizing AVL
Automatic regulation
o Efficiency mostly depends on the polling refresh rate which can
be achieved.
Legacy analog solutions:
o Control of radio channels by PTT & Carrier Detect signals
o Slow data rates, low capacity
TETRA = TDMA
o How to optimize?
Automatic Vehicle Location
Slotted Aloha method Standard procedure for the massive and random access of subscriber terminals over the system
…
Shared link from subscribers to Base
Sta5on
Collisions in the air interface due to concurrent access
a7empts
Inefficiency in the uplink in high-‐traffic networks
Transmission by Subscribers to Base Sta8on
Call Access Method (I)
Uplink:
…
Transmission from Base Sta8on to Subscribers
Dedicated link from Base Sta5on to
subscriber
100 % efficiency in the downlink
Call Access Method (II)
Downlink:
Therefore, a controlled polling method is more efficient than by random data transmission by the subscriber radios.
Based on: Basic TETRA Short Data Service (SDS) for
polling and transmitting GPS positions in Location Information Protocol (LIP) format.
Speed of polling / reply:
The fastest rate is 1 position every 0.6 seconds.
Advantages:
Supported by all TETRA subscriber radio manufacturers. Disadvantages:
Not appropriate for large networks.
Standard TETRA SDS Solution
Data Polling Over TETRA (I)
SDM (Synchronous Data Manager) is based on: Use of TETRA SDS Location Information Protocol (LIP) with
reservation of air resources, permitting reception of GPS positions at the base station (synchronization concept).
Special software in PowerTrunk network and subscribers.
Speed of polling / reply:
Up to 5 polls per second for each CCH (control channel) of the system, whether MCCH or SCCH.
Backward-compatible with standard SDS polling method for non-PowerTrunk subscribers.
SDM Advantages:
Acts in parallel for all zones simultaneously.
Eliminates collisions in the uplink (synchronous).
Efficiency actually increases with the number of zones.
PowerTrunk SDM Optimized Polling Solution
Data Polling Over TETRA (II)
On-board Systems for Mass Transit
Others: • ABS • engine ignition • air conditioning • lights • etc.
Analog / digital I/Os
Ethernet Bus
SAE J1850 Bus
PA system
Intercom system
GPS , WIFI, and TETRA antennas
Payment System and passenger counting
Security camera
Odometer
Bus route information
IOBM with Touch-screen
and accessories
BACKBONE NETWORK
SBS 1 SBS 2 SBS n-‐1 SBS n
…
N2A IP NETWORK
Control Node
3rd party applications
PABX / PSTN
Standard Subscriber
Radios
TETRA infrastructure
On-board equipment
Control Center
Transportation Oriented Network
Wide range of options according to customer specific requirements.
On-board terminal support for railway applications: o Voice communications.
o Interconnection with ATP System o Integration with TCMS. Remote control and alarms. o Location by beacons or GPS. o Interconnection with Public Address systems.
o Interfacing with intercom systems.
o Interaction with Passenger Information System.
Compliance with railway standards.
Communications Racks and Consoles
Specialized Radio Terminals
MMI Console MMI
Console
Communications Rack (TETRA + VHF)
Communications Rack (TETRA + VHF)
Train Control System
Typical Railway Configuration
REMOTE CONTROL:
-‐ Train On / Off
-‐ Iden5fica5on (Train number and service)
-‐ Emergency brakes
-‐ Brake bypass / Trac5on loop
-‐ Fire es5nguishing system
-‐ Open / close doors
-‐ Control of ligh5ng, air condi5oning, etc.
-‐ TCMS configura5on/ Driving mode
-‐ Talkgroup selec5on (by DGNA, according to train loca5on)
-‐ Informa5on panels
-‐ Pneuma5c suspension
-‐ Etc...
ALARMS:
-‐ Fire detec5on
-‐ Emergency alarms
-‐ Emergency brake
-‐ Passenger SOS bu7on
-‐ End of line
-‐ End of service
-‐ “Dead man” alarm
-‐ Train loca5on
-‐ Intercom failure alarm
-‐ P.A. system failure alarm
-‐ Change of driving mode
-‐ Ba7ery voltage
-‐ Etc...
Remote Controls and Alarms
Graphic interface for managing radio and telephone communications Configurable quick-access buttons
Optimized polling method for AVL PowerTrunk SDM Cartography with relevant information (routes, stations, points of interest, etc.) Map indication of events / incidents
Visual representation of lines and zones
Call management according to line, zone, sector, etc. Alarms and events Route number assignment
Communications G.I.S. Synoptic Display
Separate modules permit configuration according to the customer’s operational needs:
CeCo-TRANS Software Modules
AVL (Automatic Vehicle Location)
Passenger information
Vehicle identification number management
Priority management
Voice communication management
Fleet management adapted to network operation (stations, depots, etc.)
Real-time acquisition of vehicle status
User interface: Line synoptic display
Remote access to public address and passenger intercom systems
CeCo-TRANS Functionality
Group and Fleet Management
• Definition of communications groups (zones, lines, depots, group of stations, etc.)
• Automatic group change: By CeCo-TRANS or locally by the on-board equipment
• Dynamic Group Number Assignment (DGNA): Creation of temporary groups for special situations
Central St. Group Group H
Vehicle Location
GPS Beacons
Vehicles are located on the line synoptic display and/or G.I.S. module screen.
Web service / ActiveX
External application
CeCo-TRANS
The PowerTrunk CeCo-Fleet application is a web-based fleet
management tool designed for tracking and controlling an
organization’s mobile resources in real time.
CeCo–Fleet
Real-time and selective visualization of fleets, resources, and services
Management tools for controlling all units in the field
Service integration
Resource tracking
GPS position historical logging
CeCo–Fleet Features (I)
Statistics and reports
CeCo–Fleet Features (II)
Continuous data transmission (On-board Wayside):
Requires:
High availability and reliability
Train line capacity optimization Reduction of amount of wayside equipment
High quality voice communications
*Applicable to all safety and protection systems (ETCS, CBTC, PTC,..)
Railway Signaling Via Radio (I)
ERTMS Safety Levels
Sporadic data transmission using Eurobalises / Euroloop
Radio system used for voice
Continuous data transmission the radio system (monitoring and control)
Radio system used for voice and data
TETRA integration: Immediate TETRA integration: Connection with signaling system
Railway Signaling Via Radio (II)
ERTMS LEVEL 1 ERTMS LEVEL 2
Level 1 integra5on: o Integrated TETRA modem into the ERTMS cab-‐radio o New interface with the DMI consoles (based on AT commands) o Adapta5on of the TETRA serial protocol AT commands
Plus: Development of the IFIX protocol to interface with the wayside infrastructure
In this scenario, security and safety data are transmi7ed through the radio system
The complete AT commands protocol (IGSM) to interface with the Euroradio module is implemented
TETRA Network
MODEM
RADIO RACK (MT)
Console (DMI)
AT/IFIX Gateway
IGSM
CAB RADIO
Euroradio (EVC)
Train accessories
IFIX
MODEM Audio + general data + safety data (IGSM)
ERTMS Level 2 Integration
Railway Signaling Via Radio (III)
Transportation Case Studies
Barcelona Underground and Metropolitan Transport
46 Km.(28 Mi), 51 stations and 90 million passengers/year
L9 of Barcelona Underground, Spain
Total coverage: SCN and network infrastructure installation, 36 SBS.
Compact solution (RTP on-board equipment) connected to Train Management systems:
Public address / intercom / passenger information systems (PIS).
Voice communications control.
Monitoring and remote control of rolling stock.
Data capabilities: Train command management and alarms from/ to the Control Center (remote control, alarms, timetables information, station, incidents, etc...).
L9 of Barcelona Underground, Spain
1300 buses, positions updated in 20-30 sec.
Barcelona Metropolitan Transport, Spain
TETRA solution for the positioning and regulation of a fleet of 1300 buses.
Complete coverage of Barcelona: 9 SBS
STATUS and SDS messages.
Voice communications with the Control Center.
MMI integrated with driver equipment.
In terac t ion wi th the Passenger Information System.
GPS: Global Positioning System.
Excellent ROI solution (Return on Investment).
Passenger Security.
Barcelona Metropolitan Transport, Spain
Traffic on Line 15:
GPS information polling every 20-30 seconds
100,000 SDS per day
3 million SDS per month since 2002
100% availability
Barcelona Metropolitan Transport Barcelona Metropolitan Transport, Spain
Mexico City Underground
Lines B & 12 of Mexico City Underground
TETRA solution: 1 SCN, 6 SBS and 2 management systems
Continuous and optimized coverage
Network connectivity by dedicated optical fiber.
CeCo-TRANS system: Communications module and Train synoptic.
SDM application for real-time train monitoring (balize, train ID, state of alarms, etc…)
Customized on-board equipment
Guaranteed security: Immune to noise, inclusion and unauthorized listening.
Lines B & 12 of Mexico City Underground
Transmilenio Buses of Bogota
1621 buses, 1.4 million passengers/day
Transmilenio Bogotá buses, Colombia
Previous situation: Billing, security, traffic jams and accidents.
Integrated Public Transport System
GPS positioning and fleet regulation of 1500 buses in 20 sec.
MDT-400 integration in each bus.
CeCoCo, 7 operators: Fleet regulation, bus control, supervisors.
Ticket inspectors equipped with HTT-500.
Emergency network (police, fire brigade, ambulances).
356 information panels at bus stops.
Transmilenio Bogotá buses, Colombia
NJ TRANSIT and NYCT
The first TETRA LMR pilot network in the US
The largest transit agency in the United States
NJ Transit & NYC Transit Pilots
Two-site network in 800MHz. Mobile and portable terminals
with GPS. Integration with third party CAD
system (NJ Transit). Integration with legacy VHF
systems Integration with PABX/PSTN. Text messaging to and from cell
phones. FCC type acceptance obtained
for all TETRA equipment.
NJ Transit & NYC Transit Pilots
Conclusions Transportation systems today have highly demanding
requirements for critical voice and data communications.
TETRA is the proven open standard LMR technology to best meet these requirements.
Why PowerTrunk?
o World leading supplier of TETRA solutions for transport sector.
o Turn-key solutions for complete radio network infrastructure, subscriber radios and dispatch centers.
o Skilled at customization and special applications.
Thank You
www.powertrunk.com
Copyright 2012 © PowerTrunk Inc. All rights reserved
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