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TETRA Gateway and Repeater Applications for Voice and Data

TETRA Gateway and Repeater Applications for Voice and Data. Steve Barber Market Development Manager Sepura Limited. Introduction. What is Direct Mode? Types of Direct Mode Equipment DM-REP Types of Direct Mode Equipment DM-GATE Typical applications of DMO Services?. What is Direct Mode ?

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TETRA Gateway and Repeater Applications for Voice and Data

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  1. TETRA Gateway and Repeater Applications for Voice and Data Steve Barber Market Development Manager Sepura Limited

  2. Introduction • What is Direct Mode? • Types of Direct Mode Equipment DM-REP • Types of Direct Mode Equipment DM-GATE • Typical applications of DMO Services?

  3. What is Direct Mode ? • Direct Mode is direct communication between two or more TETRA terminals without the use of a network infrastructure.

  4. Types of Direct Mode equipment • DM-MS Direct Mode capable TETRA Terminal • Back-to-back(standard DMO operation)

  5. Types of Direct Mode equipment • DM-REPDirect Mode Repeater Repeater DMO DMO DMO Extends coverage between DMO terminals

  6. TMO DMO • DM-GATE Direct Mode Gateway Types of Direct Mode equipment Gateway TETRA Network Control Centre Relays communication between DMO and TMO

  7. Infrastructure Limitations for Gateways To support individual call types DM-GATE must register DM-Gate users with the SwMI • No network infrastructure supports this registration operation • Hence SwMI sees DM-GATE as just another terminal on the system • Cannot address individual calls (voice or SDS) to the intended user

  8. Benefits of DMO • Operation outside of the coverage of a TETRA Infrastructure • Predictable operation in poor signal strength areas • Covert use, no monitoring from the network can take place • Communications when there are capacity limitations on a network • Communication when a network fails • DMO Gateway extends the operational reach of a network • DMO economic solution to coverage at edge of network or rural areas • Enhanced coverage during network roll-out

  9. Applications of Gateways and Repeaters • Unpredictable Coverage When users leave a vehicle, handportable coverage may not be predictable: • Operating in built up areas • Roaming into public buildings (shopping centres etc.) • Operating near large metallic structures • Operating in a rural environment • Switching into DMO provides some predictable guidelines to follow for coverage planning • Using a Repeater will allow coverage area to be extended • Using a Gateway will allow handportable operation in DMO, whilst still enabling communications with trunked mode users.

  10. Applications of Gateways and Repeaters Using DMO in this way can be useful for: • Police officers when operating on foot after leaving a vehicle • Fire crews using the appliance as a gateway or repeater on the fire ground • Ambulance Crews leaving the vehicle to attend to patients • Transportation users when parked in depots use Gateway for communications to Trunked mode users

  11. Applications of Gateways and Repeaters • Workflow Management • Data messaging (SDS) can be received by a gateway and forwarded on to DMO users • Mobile Data terminals can also be kept informed of data transactions TETRA Network TMO SDS Gateway PEI SDS Mobile Data Terminal DMO SDS

  12. Applications of Gateways and Repeaters • Mobile data terminals can be used to “Page” Direct mode users, depending upon the circumstances it detects: • Receipt of message from TMO • Vehicle battery flat warning • Return to Vehicle TETRA Network Gateway PEI SDS No Network Coverage DMO SDS Mobile Data Terminal

  13. Applications of Gateways and Repeaters • Location of Remote Users – Manage Resource in DMO • Users out of coverage of the network can report their current position to either their vehicle or to an operator via TMO and to their vehicle • Alarm indications can report the position of the originator TETRA Network TMO SDS PEI SDS Gateway Position Report Position Report DMO SDS Position Report Mobile Data Terminal

  14. Applications of Gateways and Repeaters • In Building Coverage • Large buildings such as power stations, storage buildings and metallic structured buildings may have no TMO coverage A Gateway, can be used to allow DMO communications within the building, and a link to TMO users Outside of the building TMO TETRA Infrastructure Gateway DMO DMO User Underground Bunker

  15. Applications of Gateways and Repeaters • Fallback operation DMO User Gateway Mobile Coverage Handportable Coverage

  16. Applications of Gateways and Repeaters • Provide coverage between two geographically separated sites when there is no network coverage available Site B Site A DMO DMO Repeater DMO User DMO User

  17. Summary • Direct Mode provides a complementary service to Trunked Mode operation • Utilisation of DMO Gateways and Repeaters provides: • Network extension capabilities • Predictability of coverage for working practices • Workflow Management • Location and management of DMO users from network Control Centres • Fallback scenarios, when base station sites fail • DMO must be classed as an essential service in Public Safety, Transportation and Utility networks

  18. Kamsa hamnidaAny Questions?

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