Transcript TETRA Makes the Difference

TETRA makes the difference!
- a technology overview for users
TETRA MoU Conference – Buenos Aires
September 2005
Henk Hilberdink
Account & Project Manager
Rohill Technologies B.V.
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Overview
What is TETRA?
Who is TETRA designed for?
Why is it the best?
Staying at the forefront
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Communications everywhere
Mission/Business Critical
Fixed and deployable networks
Mixed traffic: skinny/dense
Flexible growth
Secure
Extra-Network operation (DMO)
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Organisations
With Critical communications need
Work with others
Respond to change
Map the network to the user(s)
Multi-agency networks
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Products
Multiple Vendors
Mature & proven
Feature rich
Fault tolerant
Interoperable
Compact
(terminals and infrastructure)
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Why is TETRA so good?
The Best of everything:
Technologies
Interfaces
Standards
Integration
Maps to your organisation
Future-proof
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The Best Technologies
Air interface
18kbaud π/4 DQPSK in 25kHz channel => 36kbit/s
01
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π/4
+
10
11
25 kHz
4 channels in 25kHz – using TDMA . . .
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The Best Technologies
TDMA structure
Signalling during calls
User data
Synchronisation patterns
a data-burst every 14ms
4 per frame
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time
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hyper-frame
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The Best Technologies
Speech VOCODER (VOice CODer
DEcodeR)
3.456 kbit/s ACELP
(efficient! GSM is 13.2kbits)
With error correction fills 7.2kbit/s
(single timeslot)
Quality is good
Can filter out background noises
Robust to errors
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The Best Technologies
Environments
Low and High speeds (fading) – channel coding
Urban/Hilly terrain (multipath) – equalisation
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The Best Technologies
Networks
IP backbones (soft-switch technologies) have
replaced telephony switches
Fully distributed databases
Redundancy & resilience
Transportable systems
VPN connections for secure remote access
Integration with Users’ networks
Networks operate “out of box”
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The Best PMR Interface
Voice
Full duplex
Group calls
Broadcast calls
Emergency calls
!
Up to 4 per carrier
Digital quality
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The Best PMR Interface
Robust Data
Serial (2.4kbit/s protected to 28.8kbit/s)
Packet (3.6 kbit/s protected to 14.4kbit/s)
Messaging (status/text)
GPS locations
Error protected and corrected
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The Best PMR Interface
• Over 30 Services including:
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Call priorities
User priorities
Call pre-emption
Handover
Air i/f & end-end encryption
OTAR (remote re-keying)
Dynamic groups
Late entry
Discreet listening
…….ask your supplier(s) for
more information!
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The Best Standards
Developed at ETSI
by Users and Manufacturers (EN300-392)
Fully open standard
IPR on “fair and reasonable” terms
Free downloads www.etsi.org
Multi-vendor
20 companies making core products and growing
Interoperability “IOP” independently tested
See www.tetramou.com for certificates
Ongoing
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TETRA 2
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The Best Integration
Systems
POTS
PSTN
PABX
Internet
Cellular
MPT 1327/43
PMR/LMR…
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Interfaces
E.1/V.11/G.703/
QSIG/2,4wire/
ethernet/TCP-IP/…
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The Best Integration
Integrated Applications
ICCS
Dispatch
Remote Network
management/monitoring
Location tracking (eg AVLS)
Voice recording/playback
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TETRA 2 – making the best better!
Where do we go next?
Increased range
Including ground-air
Data rates up to >512kbit/s (typical 150kbit/s)
New voice codecs
Interworking with 3G
Compliance with STANAG
Air interface enhancements
Improved battery life
Improved SIM
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TETRA makes the difference!
Henk Hilberdink – [email protected]
Rohill Technologies B.V. – www.rohill.nl
TETRA MoU – www.tetramou.com
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