1. 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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2. Overview What is TETRA? Who is TETRA designed for? Why is it the best?
Staying at the forefront
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3. Communications everywhere
Mission/Business Critical
Fixed and deployable networks
Mixed traffic: skinny/dense
Flexible growth
Secure
Extra-Network operation (DMO)
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4. 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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5. Products Multiple Vendors Mature & proven Feature rich Fault tolerant
Interoperable
Compact (terminals and infrastructure)
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6. Why is TETRA so good? The Best of everything: Technologies Interfaces
Standards
Integration
Maps to your organisation
Future-proof
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7. The Best Technologies + Air interface 25 kHz
18kbaud π/4 DQPSK in 25kHz channel => 36kbit/s
4 channels in 25kHz – using TDMA . . . 01 00
π/4 + 11 10
25 kHz
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8. The Best Technologies TDMA structure a data-burst every 14ms
Signalling during calls
User data
Synchronisation patterns
a data-burst every 14ms
4 per frame
18 per hyper-frame (1.02 sec)
1 2 3 …
time
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9. 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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10. The Best Technologies Environments
Low and High speeds (fading) – channel coding
Urban/Hilly terrain (multipath) – equalisation
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11. Networks operate “out of box”
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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12. The Best PMR Interface Voice Full duplex Group calls Broadcast calls
Emergency calls
Up to 4 per carrier
Digital quality !
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13. Error protected and corrected
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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14. The Best PMR Interface Over 30 Services including: 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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15. The Best Standards Ongoing TETRA 2 Developed at ETSI
by Users and Manufacturers (EN )
Fully open standard
IPR on “fair and reasonable” terms
Free downloads
Multi-vendor
20 companies making core products and growing
Interoperability “IOP” independently tested
See for certificates
Ongoing TETRA 2
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16. The Best Integration Systems using Interfaces POTS E.1/V.11/G.703/
PSTN QSIG/2,4wire/
PABX ethernet/TCP-IP/…
Internet
Cellular
MPT 1327/43
PMR/LMR…
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17. The Best Integration Integrated Applications ICCS Dispatch
Remote Network management/monitoring
Location tracking (eg AVLS)
Voice recording/playback
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18. 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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19. TETRA makes the difference!
Henk Hilberdink –
Rohill Technologies B.V. –
TETRA MoU –
30/11/2018