Transcript Overview of TETRA and its Services & Facilities Ole Arrhenius Nokia 17.06.2002 Agenda • TETRA and its objectives • Standards, system architecture • Interoperability • TDMA technology • Voice.

Overview of TETRA and its
Services & Facilities
Ole Arrhenius
Nokia
17.06.2002
Agenda
• TETRA and its objectives
• Standards, system architecture
• Interoperability
• TDMA technology
• Voice communication services
• Data communication services
• Future
Objectives behind TETRA standard
• Define a digital Professional Mobile Radio
(PMR) standard to satisfy the current and
future needs of especially Public Safety
and other 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
Operators:
• desired features
• data services
• competition
• cost effectiveness
Users:
• desired
features
• choice
• competition
Radio regulators:
• spectral
efficiency
• harmonisation
Manufacturers:
• open market volumes
• to ensure open standards, the ETSI
IPR policy stipulates patented
solutions to be made available at fair
and reasonable terms
Goals during TETRA standard creation
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
Core TETRA standards and standard interfaces
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Air Interface (AI)
Voice plus data (V+D)
Direct Mode Operation (DMO)
Conformance testing
TETRA Speech Codec
Packet Data Optimized (PDO)
Network A
• Inter-System Interface (ISI)
• Peripheral Equipment Interface (PEI)
DMO
Network B
ISI
AI
PEI
Operational
Management
• Organisations’ own
dispatchers manage
their own virtual private
networks
• Co-operation when
needed
Technical Management
Ambulance
group 1
Co-operation
group 1
DWS
Authorised
dispatcher can
modify groups
over the air
------------------------------------------
Network Management
Physical Radio Network
Police
group 1
Road to interoperability
MARKET
Products
and
features
Standard
ETSI
standardisation
process
Interoperability
profiles under
TETRA MoU
Manufacturers
implementations
Technology development
Interoperability
between
products and
features
Interoperability
tests
Interoperability in practice
TETRA Interoperability
ensures a multi vendor
market with healthy price
competition
Sepura Ltd
Today we have wide participation in
the interoperability work
Sepura Ltd
TETRA TDMA principle
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TDMA (Time Division Multiple Access)
4 channels per 25 kHz carrier
4 channels
4 calls per 25 kHz carrier (data or voice)
Voice and Data can be transmitted
simultaneously
12
34
Four user channels multiplexed
into one 25 kHz carrier
SPECTRUM
EFFICIENCY
36 kbits/s
gross bit
rate
Carrier
What makes TETRA unique
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Instant group communication
Fast call set-up time
Direct Mode (DMO)
Queuing
Pre-emptive priorities
Versatile dispatching and fleet management
possibilities
• Uncompromising security
– authentication of radios (and networks)
– air interface encryption,
– end-to-end encryption support
– disabling of stolen radios
• Access to data from the field with TETRA data
services
• TETRA radio interface is designed and optimized
for circuit voice and packet data
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:
- 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
Voice communication services
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Excellent voice quality
Fast call set-up
Individual (one-to-one) calls
Express calls (push and talk)
Group communication
– group calls
– scanning of groups
– dynamic regrouping
– group area
– broadcast groups
• Emergency calls
• Direct mode
Dispatcher functions
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Group monitoring & communication
Joining groups
Preemptive speech item
Group member list
Dynamic regrouping
Broadcast group.
Data communication services
Database
• Status service
- efficient, real time
• Short Data Service, SDS
- text messaging + applications
• IP packet data
- opens the world of network connectivity
• Circuit mode data
- for specialized applications like video
surveillance
e-mail
End-to-end applications for end-user needs
• Database access, work
orders, fleet management,
reporting
• Intra/Internet access, work
orders, fleet management,
reporting
Seamless Communications through TETRA
• TETRA functionality provides officer safety and ultimate
reliable and secure access
IT servers
WAP servers
End
users
Dispatchers
User organizations
TETRA base
station
TETRA
exchange
Dispatching
solution
Network
management
services
planning and
deploying
Integrated
commad and
control
Intranet
Internet
TETRA applications
LAN
WAN
PSTN
PABX
ISDN
Connectivity products
TETRA terminals
Future with TETRA
• ETSI board decided to initiate standardisation of TETRA Release 2
– fast packet data --> next generation for professional users
– improved 3G cellular interworking
– radio network performance improvement study project
– rural long range cells
• ETSI work continues under updated Terms of Reference
• Future-safe technology --> TETRA will take advantage of all
available and coming mainstream technologies as GSM, WLAN,
GPRS and 3G
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/Intranet access to
mobile workforce
• TETRA is secure
TETRA is ready, TETRA is future-proof, TETRA is global