TETRA Base Station

Terrestrial Trunked Radio (TETRA) - is a specialist Professional Mobile Radio and two-way transceiver, designed for use in public safety.

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Design Considerations

Terrestrial Trunked Radio (TETRA) is a specialist Professional Mobile Radio and two-way transceiver, designed for use by government agencies, and specifically emergency services, police forces, fire departments, ambulance, rail transportation staff, transport services, and the military. TETRA is an ETSI standard, first version published 1995. TETRA is endorsed by the European Radio Communications Committee (ERC).

TETRA terminals can act as mobile phones (cell phones), with a direct connection to the PSTN. It is common also for them to operate in a group calling mode in which a single button push will connect the user to a dispatcher and all the other users in a group. It is also possible for the terminal to act as a one-to-one walkie talkie but without the normal range limitation since the call still uses the network. Emergency buttons, provided on the terminals, enable the users to transmit emergency signals, to the dispatcher, overriding any other activity taking place at the same time.

TETRA uses TDMA with four user channels on one radio carrier and 25 kHz spacing between carriers. Both point-to-point and point-to-multipoint transfer can be used. Digital data transmission is also included in the standard though at a low data rate. To send information TETRA uses a digital modulation scheme known as π/4 DQPSK, this is a form of phase shift keying.

The system contains several mechanisms, designed into the protocols and radio parameters, to ensure communication success even during overload situations (e.g. during major public events or disaster situations), thus calls will always get through unlike in cellular systems. The system also supports a range of emergency calling modes. Unlike the cellular technologies, which connect one subscriber to one other subscriber (one-to-one) then TETRA is built to do one-to-one, one-to-many and many-to-many. These operational modes are directly relevant to the public safety and professional users.

TETRA supports both air-interface encryption and End-to-end encryption.

TI has a wide range of products like ADCs, DACs, DDC, DUC, DSP, Power, clocking, TRF meeting the requirements of Tetra/PMR Base Station designs and plays a strong role in Public Safety.

Application Notes (2)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 25 Jan 2006 186
HTM 8 KB 03 Jun 2004 41

User Guides (1)

Title Abstract Type Size (KB) Date Views
pdf 1.48 MB 24 Mar 2006 392
    

Reference Designs

Description Part Number Company Tool Type
Active Clamp Forward, Flyback for Base Station 3.3V@20A and 15V@1.5A PMP2844 Texas Instruments Reference Designs
TPS2350 -48V ATCA Hot Swap Reference Design with FET OR-ing TPS2350ATCA Texas Instruments Reference Designs
TPS2393 200W ATCA Hot Swap Reference Design TPS2393ATCA Texas Instruments Reference Designs
TPS54418 Reference Design Optimized for Small Size PMP4856 Texas Instruments Reference Designs
TPS54620 Reference Design for Fast Transient Response PMP4854-1 Texas Instruments Reference Designs
TPS54620 Reference Design Optimized for Small Size PMP4854-2 Texas Instruments Reference Designs

Selection and Solution Guides

Selection Guides (3)

Title Abstract Type Size (KB) Date Views
PDF 9.51 MB 01 May 2014 22931
PDF 146 KB 01 Sep 2010 303
PDF 4.91 MB 03 Jul 2008 490

Product Bulletin & White Papers

Product Bulletin (4)

Title Abstract Type Size (MB) Date Views
PDF 228 KB 09 Jun 2011 379
PDF 208 KB 25 Apr 2011 610
PDF 563 KB 26 Nov 2008 313
PDF 362 KB 02 Mar 2005 81

White Papers (11)

Title Abstract Type Size (MB) Date Views
PDF 1.25 MB 11 Oct 2012 474
PDF 284 KB 29 Mar 2012 128
PDF 914 KB 23 Feb 2012 254
PDF 1.09 MB 23 Feb 2012 178
PDF 391 KB 23 Feb 2012 70
PDF 1014 KB 17 May 2011 746
PDF 562 KB 21 Dec 2010 447
PDF 423 KB 09 Nov 2010 498
HTM 9 KB 15 Feb 2010 121
HTM 9 KB 15 Feb 2010 154
PDF 180 KB 26 Oct 2009 247

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