Definitions, Concepts and Applications of TETRA Hannu Villpunen Nokia

Agenda TETRA and its objectives Standards TDMA technology Interoperability 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 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

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

Core TETRA standards and standard interfaces Voice plus data (V+D) Direct Mode Operation (DMO) Conformance testing TETRA Speech Codec Packet Data Optimized (PDO) AI ISI PEI DMO Air Interface (AI) Inter-System Interface (ISI) Peripheral Equipment Interface (PEI) Network ANetwork B

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

TETRA TDMA principle 4:1 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 Four user channels multiplexed into one 25 kHz carrier SPECTRUM EFFICIENCY SPECTRUM EFFICIENCY 4 channels kbits/s gross bit rate Carrier

Technology development Interoper- ability tests Interoper- ability tests Road to interoperability User requirements ETSI standardisation process ETSI standardisation process User and regulatory requirements Manufacturers implementations Manufacturers implementations User requirements Standar d MARKET Products and features Interoperability profiles under TETRA MoU Interoperability profiles under TETRA MoU Interoperabilit y between products and features

Interoperability in practice TETRA interoperability demonstration at TETRA World Congress, , Amsterdam Today we have wide participation in the interoperability work

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: -priority set 1 of supplementary services (priorities, late entry, DGNA, …) - fleet services - telephony supplementary services Nearly 30 supplementary services: -priority set 1 of 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 broadcast groups scanning of groups dynamic regrouping group area open channel Emergency calls Direct mode Supplementary services

Data communication services 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 36 kbits/s gross bit rate

Intra/Internet access, work orders, fleet management, reporting Specialised application houses Open application interfaces Database access, work orders, fleet management, reporting End-to-end applications for end-user needs

Enhanced services with TETRA Release 2 ETSI board decided to initiate standardisation of TETRA Release 2 fast packet data --> 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

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