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

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 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• Air Interface (AI)• Voice plus data (V+D)• Direct Mode Operation (DMO) • Conformance testing • TETRA Speech Codec• Packet Data Optimized (PDO) DMO

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

AIISI

PEI

Network ANetwork B

Co-operationgroup 1

Authorised dispatcher can modify groups over the air

DWS

Ambulance group 1

Police group 1

Operational Management

• Organisations’ own dispatchers manage their own virtual private networks

• Co-operation when needed

Physical Radio Network

Technical Management

Network Management

-------------------------------------------

Technology developmentTechnology development

Interoper-abilitytests

Interoper-abilitytests

Road to interoperability

Use

rre

quir

em

ents

ETSI standardisation

process

ETSI standardisation

process

Use

r and

regula

tory

requir

em

ents

ManufacturersimplementationsManufacturers

implementations

Use

rre

quir

em

ents

Standard

MARKET

Products and feature

sInteroperabilityprofiles under

TETRA MoU

Interoperabilityprofiles under

TETRA MoU

Interoperability between products and features

Interoperability in practice

TETRA Interoperability ensures a multi vendor market with healthy price competition

Today we have wide participation in the interoperability work

Sepura Ltd

Sepura Ltd

TETRA TDMA principle • TDMA (Time Division Multiple Access)• 4 channels per 25 kHz carrier• 4 calls per 25 kHz carrier (data or voice)• Voice and Data can be transmitted

simultaneously

Four user channels multiplexedinto one 25 kHz carrier

SPECTRUMEFFICIENCYSPECTRUMEFFICIENCY

4 channels12

34

36 kbits/sgross bit

rate

Carrier

What makes TETRA unique

• 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

• Instant group communication• Fast call set-up time• Direct Mode (DMO)• Queuing • Pre-emptive priorities• Versatile dispatching and fleet management

possibilities

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

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

- opens the world of network connectivity

• Circuit mode data

- for specialized applications like video surveillance

Database

e-mail

• Intra/Internet access, work orders, fleet management, reporting

• Database access, work orders, fleet management, reporting

End-to-end applications for end-user needs

Seamless Communications through TETRA• TETRA functionality provides officer safety and ultimate

reliable and secure access

Dispatchers

User organizations

Endusers

IT servers

WAP servers

TETRA base station

TETRA exchange

Network management

servicesplanning and deploying

TETRA terminals

Dispatching solution

Integrated commad and control

PSTNPABXISDN

Connectivity products

TETRA applications

LANWAN

IntranetInternet

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