november 20021 mark edwards principal staff engineer motorola cgiss european system design centre...
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November 2002 1
Mark EdwardsPrincipal Staff Engineer
Motorola CGISSEuropean System Design Centre
TETRA Release 2 OverviewRelease 2Release 2
November 2004 Motorola
• 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
Does TETRA1 handle data?
• Database look up
• AVL
• File transfer
• Limited slow scan video
• But multimedia applications are more difficult….
November 2004 Motorola
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
Evolution: Applications vs. TETRA
TETRA 1 Circuit Data
TETRA 1Short Data Services
TETRA 1Single Slot Packet Data
TETRA 1 Multi-slot Packet Data
TETRA 2High Speed Data
Database search
AVL
File transfer e.gStill images
Slow scan video
QoS managed video
Not suitable Suitable Effective
today
November 2004 Motorola
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
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
How do data, range, bandwidth vary?600 kb/s
500 kb/s
300 kb/s
200 kb/s
Range (km)
400 kb/s150 kHz
100 kHz
50 kHz
25 kHz
Modulation schemes64QAM16QAM4QAM
D8PSK (25 kHz)
100 kb/s
Framing Rate
November 2004 Motorola
How does this compare with TETRA 1?
Range (km)
Modulation schemes64QAM16QAM4QAM
D8PSK (25 kHz)
600 kb/s
500 kb/s
300 kb/s
200 kb/s
400 kb/s
100 kb/s
Framing Rate
150 kHz
100 kHz
50 kHz
25 kHz
TETRA 1
November 2004 Motorola
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
TETRA2 brings new capabilities … to FireCheck floor plans of burning buildingTETRA 1Database of plans held on local CD in cab
TETRA 2Updated plans can be downloaded as appliance is en route
Fire fighters get latest information
Check database of hazardous chemicalsTETRA 1Text based results from database search
TETRA 2Text and image results from database search
Fire fighters get clearer information
November 2004 Motorola
TETRA2 brings new capabilities … to AmbulanceTransmit an ECG trace from ambulance to doctor in hospitalTETRA 1Transmit compressed ECG
TETRA 2Less compression used means more details on ECG
More accurate diagnostic for rare heart conditions
Transmit pictures from crash scene so doctors can predict injury typeTETRA 1still images or slow scan video
TETRA 2More detailed video image
Doctors can make more accurate predications
November 2004 Motorola
Other Additional Applications of TETRA 2TETRA 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
Transport 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
Oil, Gas & Utilities
Camera monitoring of areas at risk - used to supplement telemetry data
Faster and more accurate understanding of events
November 2004 Motorola
The Power of TETRA 2
Legend:Circle size = coverage areaCircle height = data capacity
TETRA 1 + TETRA 2 at 25 kHz
TETRA 2 at 50 kHz
TETRA 2 at 100 kHz
TETRA 2 at 150 kHz
TETRA 2 at 100 kHz
TETRA 2 at 50 kHzTETRA 2 at 150 kHz
All TETRA 2 sites includes TETRA 1
November 2004 Motorola
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
TETRA 2 Data Application influences Cell Handover
Application Type
ApplicationRequirement
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
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
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
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
TETRA is an expanding universe
From Big Bang through to …TETRA 3 and beyond
Come back next year to see what happens….