1. TETRA Release 2 Overview
Mark Edwards
Principal Staff Engineer
Motorola CGISS
European System Design Centre
November 2002

2. TETRA release one in use today What is TETRA 2 High Speed Data?
TETRA 2 opens a world of applications
Future vision: the application world after TETRA 2
Where are we in real life!
November 2004
Motorola

3. Does TETRA1 handle data? Database look up AVL Email File transfer
Limited slow scan video
But multimedia applications are more difficult….
November 2004
Motorola

4. Mission Critical Data Applications on TETRA
Today’s applications need data capacity
Frequent messages, small payload:
AVLS from portables and vehicles
Database access
Status messaging
But some applications starting to need more data throughput
Less frequent messages, much bigger payloads
Mug shots
File transfer
Slow scan video
TETRA Single Slot Packet Data
TETRA Multi Slot Packet Data
November 2004
Motorola

5. Evolution: Applications vs. TETRA
today
TETRA 1 Circuit Data
TETRA 1
Short Data Services
Single Slot Packet Data
TETRA Multi-slot Packet Data
TETRA 2
High Speed Data
Database search
AVL
File transfer e.g
Still images
Slow scan video
QoS managed video
Not suitable
Suitable
Effective
November 2004
Motorola

6. TETRA Enhanced Data Service - TEDS
Backward compatible with TETRA Release 1
Network integration capability
Flexible data rates and spectrum use
25, 50, 100 and 150 kHz channels bandwidths
Can trade off data rate, spectrum and range
Integrated TETRA 1 and TEDS system
i.e. can receive TETRA 1 calls on TEDS channels
Technology selected for TEDS use
Multi-carrier QAM (Quadrature Amplitude Modulation) in all bands
D8PSK in 25 kHz
TAPS - an alternative technology based on GSM EDGE - has now been abandoned
November 2004
Motorola

7. High Speed Packet Data Deployment
TEDS will be the solution for mission critical
A range of channel bandwidths available in the standard
Offer a single TEDS channel at each site, in addition to TETRA 1 voice channels
Provision channel bandwidth based on number of users and their data application requirements
The modulation scheme can adapt to radio transmission conditions
November 2004
Motorola

8. How do data, range, bandwidth vary?
600 kb/s
Framing Rate
500 kb/s
150 kHz
400 kb/s
Modulation schemes
64QAM
16QAM
4QAM
D8PSK (25 kHz)
300 kb/s
100 kHz
200 kb/s
50 kHz
100 kb/s
25 kHz
Range (km)
November 2004
Motorola

9. How does this compare with TETRA 1?
600 kb/s
Framing Rate
500 kb/s
150 kHz
400 kb/s
Modulation schemes
64QAM
16QAM
4QAM
D8PSK (25 kHz)
300 kb/s
100 kHz
200 kb/s
50 kHz
100 kb/s
25 kHz
Range (km)
TETRA 1
November 2004
Motorola

10. The Key Points
Modulation scheme can adapt dynamically to RF conditions
As soon as the TETRA 1 curve starts to fall off, voice service is gone
but data can still work with quite high MER (Message Error Rate) numbers due to retransmissions.
For TETRA 1, the packet data coverage can be better than voice coverage
For TETRA 2, the same trend is visible
November 2004
Motorola

11. TETRA2 brings new capabilities … to Fire
Check floor plans of burning building
TETRA 1
Database of plans held on local CD in cab
TETRA 2
Updated plans can be downloaded as appliance is en route
Fire fighters get latest information
Check database of hazardous chemicals
Text based results from database search
Text and image results from database search
Fire fighters get clearer information
November 2004
Motorola

12. TETRA2 brings new capabilities … to Ambulance
Transmit an ECG trace from ambulance to doctor in hospital
TETRA 1
Transmit compressed ECG
TETRA 2
Less compression used means more details on ECG
More accurate diagnostic for rare heart conditions
Transmit pictures from crash scene so doctors can predict injury type
still images or slow scan video
More detailed video image
Doctors can make more accurate predications
November 2004
Motorola

13. Other Additional Applications of TETRA 2
TETRA 2 Data Application
User Benefits
Police
Mobile surveillance camera that doesn’t alert the suspect
Greater detail can prove vital to remotely monitor the operation
Transport
Live updates of arrival/departures boards
More relevant and accurate information to passengers
Check image database to see manifests, passenger lists etc
Helps reduce smuggling of goods and people
Oil, Gas & Utilities
Camera monitoring at very remote locations to check on lone workers
Increased safety for remote workers
Camera monitoring of areas at risk - used to supplement telemetry data
Faster and more accurate understanding of events
November 2004
Motorola

14. The Power of TETRA 2 Legend: Circle size = coverage area
TETRA 1 + TETRA 2 at 25 kHz
TETRA 2 at 150 kHz
TETRA 2 at 50 kHz
TETRA 2 at 100 kHz
TETRA 2 at 100 kHz
TETRA 2 at 50 kHz
TETRA 2 at 150 kHz
Legend:
Circle size = coverage area
Circle height = data capacity
All TETRA 2 sites includes TETRA 1
November 2004
Motorola

15. Planning for TETRA 2 High channel bandwidth gives high data capacity
Supports the high data rates needed by multimedia applications
Gives better trunking efficiency for network operators – means lower bills for end users?
Application developers need to design for
different data rates available under different conditions
Handing over seamlessly as user moves around network
Being aware of cell reselection criteria
November 2004
Motorola

16. TETRA 2 Data Application influences Cell Handover
Application Type
Application
Requirement
Network Requirement
TETRA 2 Cell re-selection criteria
Non-real time (e.g. Database browsing, image transfer)
Medium access time, medium message delivery
Best trunking efficiency
New cell with highest data capacity
Real-time applications (e.g. status)
Fast access time, fast message delivery
Low error rate on the radio interface
New cell with best signal strength
November 2004
Motorola

17. TETRA 2 Standardisation
Stable Technical Standard for TETRA 2 due from ETSI by end 2004
The Technical Standard will then enter the Public Enquiry (PE) phase, which is
Chance for final comments by those organisations not participating in specification work
High-level assessment of the standard, does it meet goals, are goals still valid etc
Last minute check of technical details
PE comments can be submitted via National Standards Organisations
Successful PE phase results in a Harmonised Standard (due Q4 2005)
Base Stations and subscribers can be CE marked and placed in the European Economic Area marketplace
November 2004
Motorola

18. Benefits of Integrated Voice and Data in TETRA
Voice and data applications on the same radio
Less equipment to carry
Common security measures for all services
Government approved security measures rather than just commercial level
Secure authentication and encryption for signalling, voice and data
User benefits from high level of security for all data traffic
No need to worry about which applications are allowed to use which data service
No need to worry that users might be sending sensitive information over unsecured data services
November 2004
Motorola

19. Conclusion
TETRA release 1 already enables sophisticated mission critical data applications
and is already being used today to save lives
TETRA 2 will enhance existing data capabilities and enable new advanced applications
Standards are nearly ready, end users should start influencing manufacturers by explaining their future needs and requirements
TETRA users and manufacturers need to start planning now and lobbying for TETRA 2 spectrum
November 2004
Motorola

20. TETRA is an expanding universe
From Big Bang through to …TETRA 3 and beyond
Come back next year to see what happens….
November 2004
Motorola