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Part 1. TETRA – How did we get here?
Part 2. The first 2 TETRA pilots in North
America – BC Hydro & NJ Transit
Peter Clemons
Board Member, TETRA Association
Director of Communications, Teltronic S.A.U.
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Part 1. TETRA –
How did we get here?
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Goals set during TETRA
standard creation
Users: Features Choice Competition
Regulators:• Spectral efficiency• Harmonisation
Operators:• Desired features• Data services• Competition• Cost effectiveness
Manufacturers:• Open market volumes• IPR - to ensure open
standards, the ETSI IPR policy stipulates patented solutions to be made available on fair and
reasonable terms
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International digital radio standard
Designed specifically for public safety professionals and for those who work and need to communicate in groups
Evolving, open, ETSI standard
Instant push to talk, group voice communications
Pre-emptive communications system
End to end, secure voice and data transmission
TETRA Release 2 provides 3G-like data rates
What is TETRA?
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Core technology
•4 slot TDMA in 25kHz channels (6.25 kHz
equivalent)
•π/4 DQPSK Modulation
•Gross data rate 36kbit/s, Net 28kbit/s
•Circuit and packet mode data
•Low bit rate ACELP codec (4.6kbit/s)
•Fast call setup <350ms typical
•Air Interface and End to End Encryption
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Core TETRA standards and standard interfaces
Air Interface (AI)
- Voice plus data (V+D)
Direct Mode Interface (DMI)
- Voice plus data (V+D)
DMI
• Inter-System Interface (ISI)
• Peripheral Equipment
Interface (PEI)
AIISI
PEI
Network ANetwork B
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TETRA spectrum efficiency200kHz bandwidth
GSM
Half-rate GSM(future)
PMR 25 kHz
PMR 12.5 kHzP25 Tetrapol
TETRA
200 kHz carrier8 channels
200 kHz carrier16 channels
25 kHz channel8 channels / 200 kHz
12.5 kHz channels16 channels / 200 kHz
25 kHz carrier4 channels / carrier32 channels / 200 kHz
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TETRA is “feature rich” including:
Very, very, very clear digital speech
Fast call set up times
Group calls, personal calls, telephony, direct mode
Seamless roaming
Equipment interoperability (Product Compliance)
Operational and administrative interoperability and flexibility
Total management
Privacy and security
Spectrum efficiency - TDMA Trunking
Voice and data – up to 600+ kbits with TETRA release
------ & more and more
As much as you want or as little as you want
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The most secure PMR technology in the world
Digital transmissionModulation and frame structure
ACELP vocoder not “readable”
AuthenticationAuthenticates the user
Can authenticate the system
Air Interface EncryptionProtects the air link
Protects signalling and identities
End-to-End EncryptionProtects the transmission lines
Protects inside equipment rooms
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TETRA Association
• Created in 1994 as the TETRA MoU to promote the TETRA standard in Europe and around the world
• Has organised the TETRA World Congress since 1998 (13 times; next one to take place in Dubai in May 2012)
• Today there are more than 160 members from 40 countries
• There are several national and regional forums
• An up-to-date web-site with lots of information about TETRA and its members: www.tetra-association.com
• Brings together a number of sub-groups:
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Marketing Group
TE
TR
A
Asso
cia
tio
n
Operator and UsersAssociation - OUA
Technical Forum (TF)
Security and FraudPrevention Group - SFPG
Rail Forum
Regional/Geographic Forums
TETRA Association
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Regional Forums
Germany
Australasia
UK Offshore Hungary
Norway
China
Southern
Africa
Ukraine
Gulf
India
North AmericaTurkey
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Interoperability guaranteed
Commercial Products
•Infrastructure•Terminals
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TETRA Contracts by Region
Western Europe
40%
Eastern Europe
15%
Scandinavia
4%
Middle East
5%
Africa
5%
Asia Pacific
25%
Latin America
6%
2,500+ contracts in at least 121 countries
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TETRA Contracts by Sector
Public Safety
32%
Transport
33%
Utilities
10%
Business and Industry
5%
Confidential 1%
Government
10%Military
2%
Extraction
5%
PAMR
3%
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TETRA milestones – the standard continues to evolve• 1989: ETSI decides to develop a digital LMR solution to complement
development of GSM cellular solution• 1991: TDMA access technology & other basic parameters are
defined• 1994: The TETRA MoU (Association) is formed to promote TETRA
technology & guarantee the open standard• 1995: NATO hands over frequencies in the 380-400 MHz band for
use by European public safety agencies• 1996: The UK Government specifies TETRA as the technology to be
used in the nationwide emergency network which becomes Airwave• 1997: The first TETRA networks appear• 2000: Future user requirements are defined as work begins on
TETRA Release 2• 2001-2: The first IP-based TETRA networks appear• 2005: The German government selects TETRA for its nationwide
network guaranteeing that TETRA will be the No. 1 global digital LMR technology
• 2008: First TETRA World Congress outside Europe – Hong Kong• 2009: First TEDS contracts awarded; first North American pilot• 2010: First TEDS trials announced; first US pilot• 2011: Work starts in earnest on defining future Broadband TETRA
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TETRA Release 1
+
TETRA Release 2
+
(TETRA Release 3)
=
TETRA
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Part 2. The first 2 TETRA pilots
in North America –
BC Hydro & NJ Transit
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PowerTrunk – basic facts
Headquartered in New York
Full certification from FCC and Industry Canada for TETRA base
station repeater, subscriber unit and mobile unit
Pioneer in TETRA in North America
A subsidiary of Teltronic S.A.U. Spain:
35 years designing, manufacturing, implementing and supporting
LMR with 300 digital and analog LMR networks in 50 countries
Operations in Europe, USA/Canada, Pacific Rim, Asia, Middle East,
Latin America
Infrastructure, mobiles, hand portables, dispatching consoles
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BC Hydro
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BC Hydro – Basic facts
Canadian electric utility for province of British Columbia
generally known as BC Hydro
Founded in 1961
Headquartered in Vancouver
Canada’s third largest electric utility
Serves 1.8 million electricity customers
6,000+ employees
Revenue: C$ 3.8 billion (2010)
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What did BC Hydro pilot test?
First TETRA pilot in North America (2009)
TETRA technology in real installation
Multi-site and automatic roaming mechanisms
Audio quality, delay and network coverage
TETRA added-value functionality (data)
Direct mode voice and data services (without infrastructure)
TETRA interconnection to external data applications such as
SCADA or AVL
All the above in a multi-vendor environment:
PowerTrunk supplies the network
Sepura and PowerTrunk supply the subscribers units
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BC Hydro pilot: Interoperability Testing already proven interoperability between PowerTrunk
TETRA infrastructure and Sepura TETRA portable
Multiple joint references throughout the world
Some with over 5 years of continuous operation
IOP test sessions and granted certificates:
Mar 2008: DMO Gateway and TMO
Dec 2006: DMO Gateway
Nov 2006: TMO
Sep 2005: TMO
Jan 2004: TMO
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SCN
SBS 1
SBS 2
SBS 3
FIREWALL
DISPATCHER
CONSOLE
NMSAVL /
SCADA
ETHERNET
(LAYER 2)
INT
ER
NA
L
EX
TE
RN
AL
BC Hydro pilot: Network diagram
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BC Hydro pilot: Network components 1 central node (SCN) with VoIP gateway and telephone
interconnection
3 repeater sites (SBS), one with telephone interconnection
1 dispatch console
1 AVL server
Full data license (circuit data, packet data, status, SDS and
GPS)
Secondary control channel support
15 hand portable units
5 mobile units
– 2 hand portable with direct mode repeater capabilities
– 2 mobile units with direct mode gateway capabilities
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Intra-site TMO operation
Inter-site TMO
operation
Roaming and handover
Data connections
DMO mode operation
DMO-to-TMO and TMO-to
DMO operation
(Gateway) PSTN/PABX
interconnection Network management
system /line dispatcher DMO repeater 1ª
functionality
BC Hydro pilot:
Comprehensive scope of functionality
Site Base
Station 1
Site Base
Station 2
System
Central
Node
TMO
Coverage
2
TMO
Coverage
1
DMO
Coverage
1
DMO
Gateway
NMS /
Line
Dispatch
er
Data PC
DMO
Repeater
1A
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BC Hydro pilot:
Functionalities tested - scope 1 Registration
Talkgroup management
Group calls
Individual calls
Emergency calls
PSTN/PABX interconnection
Inter-site call and cell reselection during call
Status messages
Short data messages
Secondary control channels
GPS positioning (AVL)
Packet data (IP data)
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BC Hydro pilot:
Functionalities tested – scope 2 Circuit mode data
Authentication of terminals
Encryption of data and voice services
Fallback (fail-soft) operation
Dispatcher console services
Dynamic group number addressing (dynamic regrouping)
Call forwarding
Direct mode operation
Direct mode gateway
Direct mode repeater
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NJ Transit
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NJ Transit – Basic facts
NJ Transit is US’s largest statewide transportation
system
Founded in 1979
Headquartered in Newark, NJ
Links major points in New Jersey, New York &
Philadelphia
Fleet of 2,027 buses, 711 trains & 45 light rail vehicles
240 bus routes & 12 rail lines provide service for 223
million annual trips
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PowerTrunk – NJ TRANSIT Pilot
Pilot launched: November 2010
First TETRA network in United States history
It uses FCC-certified equipment only
Facilities open to TETRA Association and others
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Pilot Objectives
TETRA LMR pilot in Newark, New Jersey in
collaboration with New Jersey TRANSIT.
Demonstrate the viability of PowerTrunk TETRA
technology in a transportation environment
Demonstrate the viability of TETRA technology in
the United States
Compare TETRA capabilities (scalable, maintainable
& functionalities) to existing aging analog system
Show integration with existing Dispatcher system
and existing analog radio system
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Pilot Scope
Two base stations in the 800 MHz band were installed in
locations provided by NJT.
PowerTrunk Command and Control Center with one
operator position was integrated with the existing NJT
computer aided dispatch (CAD) system.
Test radio coverage, data capabilities and TETRA
functionalities.
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Pilot Equipment: PowerTrunk Infrastructure
1 System Control Node (SCN)
– Telephone gateway
– Ethernet SNI
1 Network Management System -server/client
2 Site Base Station (SBS)
– 1 carrier of 65 Watt @ 800MHz band
– 1 Local Site Controller (LSC)
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Pilot Equipment: CeCoCo
Command and Control Center
– Switching Matrix
– CeCoCo Operator/Supervisor position
– Party Line card
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Pilot Equipment: PowerTrunk Terminals
3 MDT-400 mobile radios
– GPS
– Vehicular connection kit
4 HTT-500 portable radios
– GPS
– Desktop charger (1+1)
1 Programming tool for mobile and portable
radios
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Pilot Equipment: NJ TRANSIT Infrastructure and Terminals
Equipment rooms for:
– 1 SCN + SBS at NJT Headquarters, Newark.
– 2 SBS at Eagle Rock Site, Newark - with antennas and LNAs for Rx.
– Control Center at Maplewood, Newark.
1 Telco T1 full - 1.544MB/s.
2 Cisco routers capable of L2TPv3.
Private IP network at NJT HQ and Maplewood.
Corporate IP network to connect to CAD server.
PABX/PSTN phone line at the SCN.
VPN for remote access from factory.
NJT analog radios: Harris, Vertex with Telex IP-223 connectivity.
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Pilot Topology
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SBS 2
Eagle Rock
Ethernet VPN
Network NMS CLIENT
NJT HQ
CECOCO
OPERATOR 1
MAPLEWOOD
SCN+SBS 1
NJT HQ
RSI CAD
OPERATOR 1
MAPLEWOOD
Corporate IP Network
PowerTrunk Remote
Maintenance System
RSI
CAD SYSTEM
SERVERS
Call Client
Call
Server
L2TPv3 Router
L2TPv3 Router
CECOCO
SYSTEM
NJT HQ
Internet
Pilot System Basic Layout
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Pilot System Basic Layout: SCN + SBS1 at NJT HQ
Cabinet
Front view
Cabinet
Rear view
Equipment room 9th floor.
Roof antennas
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Pilot System Basic Layout: SBS2 at Eagle Rock
Existing tower and antennas
Front view
Rear view
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Pilot System Basic Layout: NMS Client at NJT HQ
Network Management Client Real time monitoring
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Phases of the Pilot
I . Tetra system start-up
III. Integrate TETRA radio network with
existing analog VHF radio network
II. CeCoCo system start-up
IV. Integrate existing CAD console with
PowerTrunk CeCoCo system
V. Coverage analysis – drive test
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I. Tetra System Start-up
Tested the following functionalities:
Developed with transportation industry voice
calls (simplex, group, duplex,…).
Telephone gateway calls (PABX, PSTN).
Data calls (SDS, status, packet data, circuit
data, GPS).
Network management (real time monitoring of
calls/incidents, network statistics, data
exporting, network configuration, etc.)
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II. CeCoCo System Start-upCeCoCo
Existing Analog Equipment
CeCoCo Operator Existing CAD Dispatcher System
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II. CeCoCo system start-up
Functionalities tested:
Voice calls (simplex, group, duplex,…).
Telephone gateway calls (PABX, PSTN).
Data calls (SDS, status).
MAP GIS / GPS positioning of terminals in the field.
Interconnect calls– Used the CeCoCo Matrix capabilities to connect
some TETRA calls with PABX/PSTN calls.
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III. Integrate TETRA Radio Network with Existing
VHF Analog Radio Network
Integration with existing analog system was
achieved using three different methods:
– CeCoCo Matrix connected to analog radio using “Function
Tone” protocol. M/A-COM radio was used.
– CeCoCo Matrix connected to Telex IP-223 and to Vertex
radio.
– MDT-400 connected “back-to-back” with Vertex radio.
Placed calls to and from CeCoCo to analog system.
Interconnect calls: used the CeCoCo Matrix to
connect some TETRA calls with analog calls
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III. Integrate TETRA Radio Network with Existing
VHF Analog Radio Network
New components where added to the PowerTrunk interface equipment in order
to communicate with existing NJT analog radios.
Equipment was modified in the field to integrate with VHF analog radios (simplex, group, duplex…).
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IV. Integrate Existing CAD Console with
PowerTrunk CeCoCo System Integration with existing NJ TRANSIT CAD system achieved by
developing a SW interface between the CAD and CeCoCo.
The radio system features for CAD tested during the pilot:
– Request-to-talk (RTT) - Priority request-to-talk (PRTT)
– Emergency alert (EA). - Run/Line log on
– Operator ID log on - Test messaging
– Two-way voice - Voice announcements
– Mobile group addressing
Existing NJ TRANSIT CAD system tested all these functionalities on
the TETRA terminals directly from the CAD console.
Tests performed were successful and 100% integration between both
systems was achieved.
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V. Coverage Analysis – Drive Test
PowerTrunk-developed test drive equipment gathered
information throughout the Newark area such as signal
strentth, BER% and additional information from both
sites.
Drive test data is being analyzed at this moment
– Test data will be correlated with theoretical coverage based on
the calculations performed by PowerTrunk
Based on initial results, the coverage is better than
expected from NJ Transit’s point of view
Note:
Additional information on the final drive test and coverage results will be
available soon. Nevertheless the next slide anticipates some of that data.
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Tetra Mobile MDT-400 Drive Test
In-vehicle radio set-upUsed PowerTrunk’s own PC
application for drive tests
NOTE: Data collection is also available with portable terminals.
PowerTrunk Equipment was used to collect field data.
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Sample of Drive Test Data Collected
We anticipate that
within the vehicle
mobile unit, the
coverage radius of
each SBS is beyond 9
miles and in some
areas up to 15 miles
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Tetra Mobile MDT-400 Drive Test
Data collected with
PowerTrunk software can
be saved in Google format
for easy and
comprehensive analysis.
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NEXT GENERATION LAND MOBILE RADIO