TETRA Data Today and Tomorrow

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TETRA Data Today and Tomorrow

• Mark Edwards
• Principal Staff Engineer
• Motorola European System Design Centre

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TETRA Evolution to Meet Market Needs
Today!
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Available Data Capabilities
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Shared PD Channels Reduce Cost

• Simultaneous transactions over packet data
  channel
• Police officer queries a database and waits for a
  result
• Police vehicle sends an AVL report to a location
  server

• Advanced (Shared)
• At the same time the police officer is waiting
  for his database response, the police car can be
  sending its AVL
• Many users can share the PD channel
  simultaneously in this way

• Basic (Dedicated)
• The police officer makes his query and waits for
  the result
• Meanwhile, nobody else can make use of the PD
  channel until this transaction finishes.

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Shared Access
This could be a data base inquiry
This could be a response to the data base inquiry

• shared access uses PD channel capacity more
  efficiently
• more users can share the PD channel
• less spectrum and hardware

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Multislot Packet Data (MSPD)

• Same functionality as single slot packet data
  but faster
• Packet Data channel bandwidth is increased up to
  4 times
• Combining up to 4 single slots (i.e. timeslots)
  in one packet data channel
• Dynamically change the number of slots as voice
  load varies
• Co-existence of single and multi slot packet data
  in whole network
• Separate network resources for single and multi
  slot at each site
• A multislot radio can operate on a single slot
  channel if necessary
• Handover seamlessly between sites, even when the
  number of timeslots is different

Enables sophisticated mission critical data
applications
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Multislot Packet Data Applications
Single Slot Packet Data
Multislot Packet Data
Report and text data base enquiries

• Reports sent without delay
• Enquiry responses much sooner

• Reports sent when traffic allows
• Enquiry response when traffic allows

Simplified and faster information flow
Image database to verify a suspects ID

• Detailed images in an acceptable transfer time
• Highly detailed images download faster

• Limited usefulness It takes a long time to
  download a useable image
• Useable if download time isnt critical

Patrol Officers can swiftly identify a suspect
Slow Scan Video for surveillance

• Real time video reception
• Good image quality

• Display freezes for long periods
• Low quality images

Good perception of incidents from field cameras
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GPRS and TETRA data rates are similar
Peak the peak bit rate on the IP channel.
Users bit rate depends on application protocols

• TETRA has mission critical features that GPRS
  lacks, i.e. enhanced security, availability,
  resilience
• TETRA shares this bandwidth with less users than
  GPRS

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Multislot Packet Data

• Same interactions as single slot packet data
• Voice priority over data
• SDS messages can be carried in spare capacity on
  packet data channels
• Higher data rate enables more advanced
  applications
• MSPD already defined within the TETRA standard
• TIP (TTR 001-05) is approved
• enables multi-vendor terminal solution

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TETRA 2 comparison with TETRA 1
Framing Rate
600 kb/s
500 kb/s
150 kHz
400 kb/s
Modulation schemes 64QAM 16QAM 4QAM
300 kb/s
100 kHz
200 kb/s
50 kHz
100 kb/s
25 kHz
Range (km)
28.8 kb/s
TETRA 1
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Network Upgrade to TETRA 2

• Users want to expand networks and support new
  services and applications
• Protect investment
• Ease of upgrade

• TETRA2 standard was developed with upgrade in
  mind
• new base stations are high speed data ready
• software upgrade for base stations and core

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TETRA fulfilling Mission Critical Needs

• TETRA IP data
• TETRA single slot packet data provide basic data
  applications
• TETRA Now Present and future
• TETRA multi slot packet data provide
  sophisticated data applications
• TETRA In the Future Looking towards the horizon
• TETRA 2 innovation for new data applications

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Spectrum for TETRA2

• A challenge to be met by each country
• Spectrum requirement for a nationwide TETRA 2
  network
• At least 2 x 1 MHz, but 2 x 2 MHz would be better
• Close to the TETRA 1 spectrum (350 MHz in China)
• ETSI analysis on requirements (TR 102 513)
• Now is a good time for operators and users to
  begin talking to regulators and the TETRA MoU

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TETRA Roadmap for Data
Future
2005 MSPD delivered
2000 First IP delivered
Higher Speed Packet Data
1995 First TETRA contract
standard
TIP
IOP
MSPD
standard
TIP
IOP
IP Service
standard
TIP
IOP
TETRA VD
standard
TIP
IOP
Evolutionary stages