TETRA Congress Warsaw, 13.-14.6.2006

TETRA Data Services & Applications

Hannu Vilppunen

Warsaw June 2006

Presented by Risto Toikkanen

Contents

Basic data services in TETRA

The concern about data speed

TETRA data applications, examples

Wireless Application Protocol, WAP

Towards higher data speeds

Conclusions

Basic data services in TETRA

Status messages– efficient, real time

Short Data Service, SDS– text messaging +

application platform

IP packet data– advanced applications,

opens the world of Intranet and Internet connectivity

Circuit mode data– for specialized applications,

rarely used

36 kbits/sgross bit

rate

4 channels

1 2

3 4

Carrier

Status messages

• Data sent as 16 bit numeric values• 32768 values free for use, the rest

reserved for system use• Converted into text in the receiving

terminal or workstation• Fast and efficient• Easy to use• Sent over control channel, do not

load traffic channels

Short Data Service• Four SDS-types specified by TETRA

standard: SDS-1, SDS-2, SDS-3 and SDS-4 TL

• SDS-1, -2 and -3 are fixed length (16, 32, 64 bits)

• SDS-4 TL is variable length (max 1278 bits). Protocol identifier defines how SDS-4 is used, most typical use is text messaging (140/160 chars) and AVL

• Data sent over control channel or traffic channel (simultaneous voice and data)

• Text entry using the keypad of the phone, single device for voice and data

MM05 11:28 p12553: VIPs arriving in 5 minutes at gate 23, prepare security and transport.

OK

Hello, I will be back in the ioffice in 15 minutes. I will call you then. John

OK

IP-packet data

• Similar to the GPRS service in GSM networks

• Enables advanced data applications

• Enables Intranet and Internet connectivity

• Excellent application platform

• Uses traffic channel, single slot or multiple time slots

TETRA data services enable a wide range of applications

• Database access• Image communications• Intranet/internet access• Reporting• e-mail, calendar• Workforce management • CC&C system integration • File transmission• Information push, alarm

distribution• Information pull • Control and monitoring,

telemetry

TETRA fullfils 95% of daily data needs

TETRA GPRS EDGE 3G

Data speed < 28 kbps < 40kbps < 160kbps < 1Mbps

Multimedia services Text, images

Text, images

Text, images, video

Text, images, video

Internet/intranet access Yes Yes Yes Yes

Complementing non-criticalservices 5%

Fundamental daily services 95%

Complementary wireless data services can be used to complement non-critical data services, if necessary

The concern of data speed• Single slot IP packet data provides approximately 3 … 4 kbps

payload

• Multislot data increases performance but has side effects– Increased power consumption in handsets– Decreases voice capacity

• Robust basic data services more important than extreme speeds especially in public safety

• Majority of daily data services consist of low data volume database queries in the range of 0.5 … 10 kB per transaction

• Smart applications are more important than the raw data speed, bloated applications will eat available bandwidth, no matter how much bandwidth is available

The concern of data speed, example

• Original photo image taken with a digital camera. Original size is 1600x1200 and file size 1MByte

• Pixel size of a TETRA handheld terminal typically 100 x 130 pixels

• Compression and optimization for 100x130 pixel screen shrinks the 1MByte image into 7 kilobytes

100 x 130 x 16 (colour) = 26 kBytes

With further optimisation and compression from 26 kB to 7 kB

Optimized for handportable radio’s screen 7 kB

Example of an integrated, smart application

• Police field command application using AVL, on-board databases, status messaging, text messages and IP packet data

• Minimizes over-the-air data, yet very graphics intensive and informative

Touch-screen display for ease of use

Touch screen buttons, which can be activated by the user …

… or even to a on screen touch screen keyboard for easy messaging

Underlaying AVL application

On screen AVL map with touch screen action buttons …

813

812

Off-duty

Car chase

Not in car

At scene

Transport

On the way

Free

F9MOB

POKE/K1F1Show

F7Forms/En

F6Equipment

F3Status

F4Maps/AVL

F2Report/His

F8Setup

F5Messages

814

811

ZOOM--

ZOOM+

AVL-map changes into an aerial photo of the same area, when zoom-in button is pressed repeatedly …

C14

U12

F9MOB

F1Show

F7Forms/En

F6Equipment

F2Report/His

F8Setup

F5Messages

P15

A32

ZOOM--

ZOOM+

Act.AVL

Add Mark

Show all

Vector

Hide

F3Status

F4Maps/AVL

F1Show

F7Forms/En

F6Equipment

F3Status

F4Maps/AVL

F2Report/His

F8Setup

F5Messages

F9MOB

ZOOM--

ZOOM+

Act.AVL

Add Mark

Show all

Vector

Hide

Parking 1

Security

VIPHigh security area

U12

A32

C14

P15

Onboard static graphics information combined with dynamic location of GPS-equipped field units

Send only the necessary information over the air

• Keep high volume, ‘static’ data (maps, images, floorplans of buildings) in onboard databases

• Update static data at the station using fixed LAN or WLAN

• Over the air information is typically low volume:– Location information– Status of field units– Text messaging– Compressed images

More examples of applications using TETRA data services

Automatic Vehicle/Person Location, AVL / APL

• Integrated GPS in new terminals

• Position of every unit in real time

– Location shown on GIS at Command and control room

• TETRA SDS or TETRA IP can be used to deliver location information

• New ETSI LIP standard for compact SDS location information, 76 bits instead of about 200 bits

Image communication

• ”One picture paints thousand words”• TETRA IP one slot packet data is

sufficient for image transmission• Image compression technologies reduce

data volumes for fast transmission, e.g. JPEG2000

• Retrieve images from a database (pull)• Send images from command and control

centre (push)• Increases efficiency and officer safety

Wireless Application Protocol (WAP)

• Specified to create a global protocol to work across differing wireless network technologies

• WAP offers bearer independence• Allows applications developed to work across TETRA and GSM and

GPRS• Optimised for the constraints of handheld devices

Application Portal2. Locate

3. Mail

4. Report

5. Search

Link Menu

WAP Server

Benefits of WAP

• Single device for voice and data,no need for external devices to use data services

• Instant and easy access anywhere, short handshaking delay• User-friendly interface for applications• Applications reside in serves, easy to update, no modifications needed

in the handsets

Example of WAP user interface, vehicle check

POLICE WAPLogin

OK

LoginPolice ID

Password

Login

POLICE WAPPersonVehicleFineLogout

OK

p89925

••••••

Vehicle SearchPlate:

Vehicle Class:

Search

JEE-398Toyota 5d RAV4STW 1.8-ZCA26L-AWMNKW/249SILVER/METAL

More

Checked: 24.09.2004In use since:17.10.2000OwnerHolderTechnical

OK

JEE398

1

What about the future ?

TETRA High Speed Data

• TETRA high speed data is part of TETRA 2 standardization

• TETRA HSD will complement the current TETRA services with higher data speeds

• User experience comparable to GPRS/EDGE

• Very spectrum-efficient• Adapts its speed (modulation)

when necessary

Development continues

Evolution

TETRA High Speed Data

Time

Integrated GPS

Colours

Next …

Imagecommunication

Advanced locationapplications

Java

Situationawareness

Multi-slot packet data

Summary

• TETRA provides a rich set of basic and advanced data services

• Data applications complement TETRA voice services

• IP over TETRA is a solid and robust platform for data applications

• Accessing data from the field opens totally new opportunities for public safety and other user segments

• Data speed in TETRA IP cover the majority of current needs