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What is the Space of
PMR/PMAR in the era of NGN?
ICT Workshop Brasília Nov.10, 2006
NGN, FMC, IMS, 3G …
 Assume all are implemented
 Is there room for another kind of network?
 What customer need could drive it?
ICT Workshop 2006 11
More and more Critical Incidents
 Critical incidents impact everyone
 Public pressure necessitates a move from
independent operations of respondents to
interdependent collaboration
“No man, woman or child should lose his or her
life because public safety officials cannot talk to
one another.”
The Public Safety Wireless Network
ICT Workshop 2006 11
Who are the Public Safety Responders
 Police
 Fire
 Emergency Medical Services
 Rescue
 Civil Defense
 Public Utilities – Electricity, Gas, Water
 Essential Transport
ICT Workshop 2006 11
Communication Requirements of
Emergency Responders

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


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

Group Calls
Operations / Dispatch Centers
“instantaneous connection”`< 0,5 s
Pre-Emptive (Emergency ) Call
Priority Levels
Encryption
Interoperability wiht Autonomy
Multiple Resilience Levels
– Redundancy
– Site Operation
– Direct Mode
ICT Workshop 2006 11
Commercial Network Suitability
National Task Force on Interoperability says..
“Public safety officials cannot depend
on commercial systems that can be
overloaded and unavailable”
ICT Workshop 2006 11
True Interoperability
Enables instant
communications
among multiple
responders and
different agencies
ICT Workshop 2006 11
True Interoperability
“True Interoperability allows public safety personnel in different
agencies to communicate with each other on demand in real
time” --Public Safety Wireless Network
Consequences
 More coordination regardless of network type
or agency affiliation
 Seamless access to voice and data
intelligence
 Coordinated response can happen in
seconds, not hours or minutes
ICT Workshop 2006 11
Coverage
Designed to user needs; not profit
based
 Extensive planning
 Additional capability beyond
traditional network coverage
“…I think the most salient point
[of having your own system] is the
ability to maintain a service level
without a profit motive”
Steve Jennings, CIO Harris County,
TX
ICT Workshop 2006 11
A Critical Network
Provides the availability, information security and
reliability that responders require
ICT Workshop 2006 11
Critical Networks
Critical Networks are the Lifeline whenever lives or
outcomes depend on communications
 Reliable
 Always available
 Redundant
 Priority access at all times
ICT Workshop 2006 11
The TETRA Standard
– ETSI developed standard
– Digital benchmark for
wireless communication
networks
– Currently operating in 77
countries
– Supported by Schengen
Group of Public Safety
– Supplied by many
providers (multiple
subscriber and
infrastructure vendors)
ICT Workshop 2006 11
The TETRA Standard
ENCRYPTION
TELEPHONY
Full Duplex
Packet Data
Data Transmission
fast and reliable
TWO-WAY RADIO
Group and Individual
Calls, emergency
calls, priority levels,
DMO
ICT Workshop 2006 11
 Strong multi vendor support
 High capacity - ideal for
shared networks
 Efficient use of spectrum
 Longevity of investment
– 20 years +
– Ongoing
enhancements
– New applications on
installed infrastructure
 Data Applications
 Multiple & High Levels of
Security
 Multiple levels of Resilience
TETRA TDMA principle

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
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TDMA (Time Division Multiple Access)
4 channels per 25 kHz carrier
12
4 channels
4 calls per 25 kHz carrier (data or voice)
34
Voice and Data can be transmitted
simultaneously
36 kbits/s
gross bit
rate
Carrier
Four user channels multiplexed
into one 25 kHz carrier
SPECTRUM
EFFICIENCY
ICT Workshop 2006 11
Typical TETRA Network
1b
Interfaces
External
Network
Management
3
1a
BS
BS
TETRA
Infrastructure
NMS
BS
BS
BS
BS
6
2
5
Control
Room
ICT Workshop 2006 11
PSTN, ISDN
PDN
4
Line Station
(Despatcher)
.Another
TETRA
Network
Services
Voice Services
Fast call set-up
Individual (one-to-one) calls
Express calls (push and talk)
Group communication
–
–
–
–
–
group calls
scanning of groups
dynamic regrouping
group area
broadcast groups
Emergency calls
Direct mode
ICT Workshop 2006 11
Voice Dispatch Services
Group monitoring & communication
Joining groups
Preemptive speech item
Group member list
Dynamic regrouping
Broadcast group.
Data Services
Status service
Short Data Service, SDS
IP packet data
Circuit mode data
The TETRA Association
Formed in 1994
Promote the ETSI TETRA
standard world-wide
Achieve Harmonised
Spectrum in Europe
– 380-400MHz
– 410-430MHz
– 870-920MHz
Encourage an open and
competitive market
ICT Workshop 2006 11
TETRA Association – Some Members
ICT Workshop 2006 11
Open and competitive markets
 Fully compatible equipment
 Interoperability process created
 Independent test house
 Certification process
 Fully supported by industry
ICT Workshop 2006 11
The future of TETRA
 Special Working Group formed
– To consider future user needs
– To ensure TETRA remains relevant in the coming
decade
 New Codecs
 Air Interface enhancements
 Range extension
 High speed data
ICT Workshop 2006 11
Q&A
ICT Workshop 2006 11
Muito Obrigado!
Bruno Nowak
(11) 3847-3252
[email protected]