TETRA makes the difference a technology overview for users

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TETRA makes the difference!- a technology
overview for users

• TETRA MoU Conference Amman
• September 2005
• Alister Bailey
• Vice Director Development
• 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 p/4 DQPSK in 25kHz channel gt 36kbit/s
• 4 channels in 25kHz using TDMA . . .

01
00

p/4
10
11
25 kHz
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The Best Technologies

• TDMA structure
• 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 . 17 18 1
time
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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

.010010101001011001111010010101101001..
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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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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 TETRA 2

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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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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 gt512kbit/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!

• Alister Bailey a.bailey_at_rohill.nl
• Rohill Technologies B.V. www.rohill.nl
• TETRA MoU www.tetramou.com