Definitions, Concepts and Applications of TETRA

1
Definitions, Concepts and Applications of TETRA

• Hannu Villpunen
• Nokia

14.11.2001
2
Agenda

• TETRA and its objectives
• Standards
• TDMA technology
• Interoperability
• Voice communication services
• Data communication services
• Future

3
Objectives behind TETRA standard

• Define a digital Professional Mobile Radio (PMR)
  standard to satisfy the current and future needs
  of all PMR users across Europe
• Unite fragmented PMR markets into one common
  market - harmonized use of spectrum
• Fulfill European authority co-operation
  requirements (Schengen Treaty) to enable European
  Integration cross-border operation using common
  frequency spectrum

4
And, TETRA is no longer limited to only Europe

• TETRA has been adapted by many countries outside
  Europe, especially in Asia
• Latin America and Africa also emerging

• In early 2001 TETRA was awarded industry standard
  status in China
• Several TETRA contracts in China already now

5
Core TETRA standards and standard interfaces

• Voice plus data (VD)
• Direct Mode Operation (DMO)
• Conformance testing
• TETRA Speech Codec
• Packet Data Optimized (PDO)

• Air Interface (AI)
• Inter-System Interface (ISI)
• Peripheral Equipment Interface (PEI)

DMO
AI
PEI
ISI
Network A
Network B
6
What makes TETRA unique

• Unique communication package in total
• Instant group communication
• Fast call set-up time
• Direct Mode (DMO)
• Queuing of channel resources
• Pre-emptive priorities

• Uncompromising security
• authentication of radios (and networks)
• air interface encryption, static or dynamic keys
• end-to-end encryption support
• disabling of stolen radios
• Access to data from the field with IP packet data

7
TETRA TDMA principle

• 41 TDMA (Time Division Multiple Access)
• 4 channels per 25 kHz carrier
• 25 kHz carrier spacing
• 4 voice calls per 25 kHz carrier
• Data calls can use up to 4 channels (multi-slot
  data)
• Voice and Data can be transmitted simultaneously

36 kbits/s gross bit rate
2
1
4 channels
3
4
Carrier
SPECTRUM EFFICIENCY
8
Road to interoperability
Interoperability between products and features
User and regulatory requirements
User requirements
User requirements
Products and features
Standard
Interoper- ability tests
ETSI standardisation process
Manufacturers implementations
Interoperability profiles under TETRA MoU
Technology development
9
Interoperability in practice
TETRA interoperability demonstration at TETRA
World Congress, 16-18.11.1999, Amsterdam
Today we have wide participation in the
interoperability work
10
TETRA service classification

• TETRA is not only a radio access standard, it is
  also a standard defining the services and
  functionality

• Nearly 30 supplementary services
• priority set 1 of supplementary services
• (priorities, late entry, DGNA, )
• - fleet services
• - telephony supplementary services

Bearer services data transport - packet,
circuit, single/multi-slot
Teleservices voice calls - one-to-one, group,
broadcast
11
Voice communication services

• Excellent voice quality
• Fast call set-up
• Individual (one-to-one) calls
• Express calls (push and talk)
• Group communication
• group calls
• broadcast groups
• scanning of groups
• dynamic regrouping
• group area
• open channel
• Emergency calls
• Direct mode
• Supplementary services

12
Data communication services
36 kbits/s gross bit rate

2
1

• Status service
• - efficient, real time
• Short Data Service, SDS
• - text messaging application vehicle
• IP packet data
• - opens the world of Internet connectivity
• Circuit mode data
• - for specialized applications like video
  surveillance

3
4
13
End-to-end applications for end-user needs

• Database access, work orders, fleet management,
  reporting

• Intra/Internet access, work orders, fleet
  management, reporting
• Specialised application houses
• Open application interfaces

14
Enhanced services with TETRA Release 2

• ETSI board decided to initiate standardisation of
  TETRA Release 2
• fast packet data --gt next generation for
  professional users
• improved 3G cellular interworking
• voice coding, gateways, SIM card
• radio network performance improvement study
  project
• rural long range cells
• ETSI work continues under updated Terms of
  Reference
• Future-safe technology - time to start roll-outs
  is now

15
Conclusions

• TETRA is the global open standard for digital
  professional radio communications
• mission critical voice and group dispatch
• mobile telephony
• advanced data transfer and applications
• Real and open multi-vendor supply
• TETRA brings Internet access to mobile workforce
• TETRA is secure

TETRA is ready, TETRA is future-proof, TETRA is
global