overview of tetra and its services & facilities päivi laakso nokia 17.06.2002
TRANSCRIPT
Overview of TETRA and its
Services & Facilities
Päivi Laakso
Nokia
17.06.2002
Agenda• TETRA and its objectives
• Standards, system architecture
• Interoperability
• TDMA technology
• Voice communication services
• Data communication services
• Security 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
Goals during TETRA standard creation
Users:• desired features• choice• competition
Radio regulators:• spectral
efficiency• harmonisationOperators:
• desired features• data services• competition• cost effectiveness
Manufacturers:• open market volumes• to ensure open standards, the ETSI
IPR policy stipulates patented solutions to be made available at fair and reasonable terms
TETRA market today • Number of TETRA contracts in July 2004
– 505 contracts (325 contracts by September 2003)• Europe 357• APAC 53• Africa 18• Latin America 24• Middle East 26
• Very positive user experiences from networks that are in operation – TETRA has improved the security and safety of field units – Shared multi-agency operations have been effective during incidents– Open standard has affected product pricing, resulting in very competitive prices compared
to single vendor solutions– Advanced wireless data applications have entered professionals’ daily work
TETRA System Building Blocks
PSTNPABXISDN
LANWAN
IntranetInternet
Connectivity products
TETRA base station
TETRA exchange
Network management
servicesplanning and deploying
TETRA terminals
Dispatching solution
Integrated command and control
TETRA applications
Examples of TETRA networks
• VIRVE, Country-wide public safety network in Finland – 15 switches, over 1200 base
stations– Users: police, fire, rescue,
customs, frontier guards, social and health services
• Aéroports de Paris – 1 switch, 15 base stations– Users: maintenance and
security personnel of airports
Core TETRA standards and standard interfaces
• Air Interface (AI)• Voice plus data (V+D)• Direct Mode Operation (DMO) • Conformance testing • TETRA Speech Codec DMO
• Inter-System Interface (ISI)• Peripheral Equipment Interface
(PEI)
AIISI
PEI
Network ANetwork B
TETRA service classification• TETRA is not only a radio access standard, it is also
a standard defining the services and functionality
Bearer services = data transport:
- packet, circuit, single/multi-slot
Bearer services = data transport:
- packet, circuit, single/multi-slot
Teleservices = voice calls:
- one-to-one, group, broadcast
Teleservices = voice calls:
- one-to-one, group, broadcast
Nearly 30 supplementary services:- priorities, late entry, DGNA, …- fleet services- telephony supplementary services
Nearly 30 supplementary services:- priorities, late entry, DGNA, …- fleet services- telephony supplementary services
Nature of TETRA standard
The TETRA standard by ETSI • Provides
–Rich variety of tools and mechanisms to meet user requirements–Multiple possibilities to implement end-user services
Need to agree a common implementation to achieve interoperability
• TETRA interoperability certification ensures open multivendor market.
MARKET
Technology developmentTechnology development
Interoper-abilitytests
Interoper-abilitytests
What does interoperability mean?• Radio terminals and network infrastructures from
different manufacturers work together
Use
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ETSI standardisation
process
ETSI standardisation
process
Use
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Manu-fracturersImplemen-
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Manu-fracturersImplemen-
tations
Use
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Standard
Products and
features
Interoperabilityprofiles underTETRA MoU
Interoperabilityprofiles underTETRA MoU
Interoperability between products and features
Interoperability (IOP) - Advantages
For user• Manufacturer independent
supply and 2nd source guarantee
• Benefits of competition – Wider selection of products
(gateway, special terminals etc.)
– Lower prices
– Constant improvements
• Increased speed of innovation
For manufacturer• Larger (global) market
– Critical mass for special products
– Potential to focus to own strengths
– Increased investment opportunity
– Faster time to market• One common and
independent specification– No vendor bias
What makes TETRA unique
• Fast call set-up time • Excellent voice quality,
elimination background noise
• Direct Mode (DMO)• Queuing • Spectrum Efficiency via
TDMA (Time Division Multiple Access, 4 channels on 25 kHz)
• Pre-emptive priorities• Versatile dispatching and
fleet management possibilities
What makes TETRA Unique
• Uncompromising security– Preventing eavesdropping of
communication– 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
Voice communication services
• 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
• Group monitoring & communication • Joining groups• Preemptive speech item• Group member list• Dynamic regrouping• Broadcast group
Data Communication Services
• Status service
- efficient, real time
• Short Data Service, SDS
- text messaging + applications
• IP packet data
- Internet/intranet access from the field
• Circuit mode data
Database
End-to-end applications for end-user needs
Security Services
• Secured access to communication• Authentication• Air interface encryption• End-to-end encryption• Separated technical and
operational management
TETRA Network Development Trends
Shared Multi-Agency Network
Nation Wide Service
WAP Servicesopen possibilities fornew ways of working
Advanced Voice Services
No Network Boundaries
Advanced SecurityServices
Advanced DataServices
TETRA
Optimised Total Cost of Ownership
TETRA Terminal Development Trends
User interface must be intuitiveand easy to use
WAP servicesopen possibilities of entirely new ways of working
Colour displaycan convey more information and enables image transfer to terminals
Voice feedbackgiver users extra usability
Messaging and packet dataenhance group communication
Small and lightweight yet robust, and manageable even when wearing protective gloves
Support for location solutionslike integrated GPS
Benefits from mainstream improvements and new
functionalities, like battery lifetime, image communication
Future with TETRA • TETRA standard is being developed to support higher data
rates• TETRA Release 2 will support TEDS (TETRA Enhanced Data
Service) • User Requirements Specification for TEDS developed based on
query among ETSI members, main input from Public Safety Users
• Release 2/TEDS standard expected to be completed 2005 • User data rates up to 100 kbit/s – databases, graphics,
images, ... • Radio channels 25, 50, 100 kHz, multi-carrier modulation• Backward compatibility with TETRA Release 1 control channel
for easier upgrades of networks
TETRA Release 2 will maintain the competitiveness of TETRA for the years to comeTETRA Release 2 will maintain the competitiveness of TETRA for the years to come
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 globalTETRA is ready, TETRA is future-proof, TETRA is global