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TETRA
Dubai, 10th April 2014.
Luis Jose Gil, CTO TSU Ltd
TETRA. Why and what for?
1.History of Professional Mobile Radio• Conventional• ‘Virtual’• Repeaters• Standards• TETRA at last!
2.And TETRA offers…3.A real case. Telecontrol
Index
1. History
A two-way radio is a radio that can both transmit and receive
A two-way radio is a radio that can both transmit and receive
Australia, 1923 (…) The Victoria Police were the first in the world to use wireless communication in cars, putting an end to the inefficient status reports via public telephone boxes
Australia, 1923 (…) The Victoria Police were the first in the world to use wireless communication in cars, putting an end to the inefficient status reports via public telephone boxes
1. History
Two-way radioOne channel – one frequency
Professional Mobile Radio
Two-way radioOne channel – one frequency
Professional Mobile Radio
Efficient communicationEfficient communication
only one station to transmit at a time
only one station to transmit at a time
Immidiate reportingImmidiate reporting
Users!! Users!!
Capacity? Capacity?
Officer Officer Officer
1 2 3
1 2 3
1. History
1. History
Virtual channels. (EU) Selective channels. Logics embedded into the radio. A preprogrammed 5-tone opens speaker of the chosen
partners.
Virtual channels. (EU) Selective channels. Logics embedded into the radio. A preprogrammed 5-tone opens speaker of the chosen
partners.
One frequency – One channelFixed RF channels, static frequencies
One frequency – One channelFixed RF channels, static frequencies
1
2
3
f1
f2
f3
1
2
3
f1
1. History
What to do??What to do??
Area!! Area!!
A repeater forwards every speechA repeater forwards every speech
1. History. Repeater
A repeater forwards every speechA repeater forwards every speech
1. History. Repeater
Nationwide?Nationwide?
BackboneBackbone
1. History. Repeater
FrequenciesFrequencies
Trunked!!Trunked!!
Virtual channelsVirtual channels
RepeatersRepeaters
1 f1
f1 1 2
1. History. Trunking
1. History. Standards
Compatible?Compatible?
STANDARDS
The European Telecommunications Standards Institute
The European Telecommunications Standards Institute
Market !!Market !!
1. History. Standards
ETSI StandardETSI Standard
DigitalDigital
TrunkedTrunked
RadioRadio
Multiple manufacturersMultiple manufacturers
-Encryption-Data
-Encryption-Data-Encryption-Data-Nationwide networks
-Encryption-Data-Nationwide networks
2. And TETRA offers…
2. And TETRA offers…
Voice Services:
CommonIndivicual Calls (*)Supplementary ServicesDGNA – Remote Terminal programming
CommonIndivicual Calls (*)Supplementary ServicesDGNA – Remote Terminal programming
TETRAGroup Calls (PMR)Priority (Emergency, Busy Queing,…)Authentication & Encryption (*)DMO – Direct Mode
TETRAGroup Calls (PMR)Priority (Emergency, Busy Queing,…)Authentication & Encryption (*)DMO – Direct Mode
Data Services:
Common
(SMS) Short Data ( ≥ GSM !! )
(PDP) Native IP connectivity (≈GPRS)
Common
(SMS) Short Data ( ≥ GSM !! )
(PDP) Native IP connectivity (≈GPRS)
TETRA
Circuit mode
A point-to-point dedicated data channel. ( ≠ GSM !!)
TETRA
Circuit mode
A point-to-point dedicated data channel. ( ≠ GSM !!)
• Starting in 1997.• Hundreds of networks in
• Europe• Asia• Middle East• South America
• Initially public safety, economics (sharing), autonomy, interoperability for emergencies.• Other markets:
• Transportation (fleets, airports, trains).• Utilities• Military
• Many independent manufacturers
2. And TETRA offers…
3. A real case
Requirements:
• Truck tracking and telecontrol • Nationwide solution• Secure wireless network. Encryption• Driver authentication required• Command & control authorization• Truck GPS tracking• Exclusion areas• Emergency telecontrol
Requirements:
• Truck tracking and telecontrol • Nationwide solution• Secure wireless network. Encryption• Driver authentication required• Command & control authorization• Truck GPS tracking• Exclusion areas• Emergency telecontrol
GPS
Engine
Identification
Command & Control
3. A real case
TETRA. Trends?
LTE?LTE?
TETRA
• Thanks for your attention!• Please!, ask me your questions!
