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. 30/11/2018

Overview What is TETRA? Who is TETRA designed for? Why is it the best? Staying at the forefront 30/11/2018

Communications everywhere Mission/Business Critical Fixed and deployable networks Mixed traffic: skinny/dense Flexible growth Secure Extra-Network operation (DMO) 30/11/2018

Organisations With Critical communications need Work with others Respond to change Map the network to the user(s) Multi-agency networks 30/11/2018

Products Multiple Vendors Mature & proven Feature rich Fault tolerant Interoperable Compact (terminals and infrastructure) 30/11/2018

Why is TETRA so good? The Best of everything: Technologies Interfaces Standards Integration Maps to your organisation Future-proof 30/11/2018

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 30/11/2018

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 …. 17 18 1 time 30/11/2018

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 30/11/2018

The Best Technologies Environments Low and High speeds (fading) – channel coding Urban/Hilly terrain (multipath) – equalisation 30/11/2018

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” 30/11/2018

The Best PMR Interface Voice Full duplex Group calls Broadcast calls Emergency calls Up to 4 per carrier Digital quality ! 30/11/2018

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 ….010010101001011001111010010101101001…….. 30/11/2018

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! 30/11/2018

The Best Standards Ongoing TETRA 2 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 30/11/2018

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… 30/11/2018

The Best Integration Integrated Applications ICCS Dispatch Remote Network management/monitoring Location tracking (eg AVLS) Voice recording/playback 30/11/2018

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 30/11/2018

TETRA makes the difference! Henk Hilberdink – h.a.hilberdink@rohill.nl Rohill Technologies B.V. – www.rohill.nl TETRA MoU – www.tetramou.com 30/11/2018