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GPRS

The GPRS Abis/BTS server allows to simulate a suite of BTSs and to generate a mobile population with two software modules in conformity with the test purpose.
The first module includes only the RLC/MAC protocol layer and a simulation/test function of the user data, which works at an higher protocol layer. This module can communicate with an S4 module that works as the Gb interface.
The second module completes the protocol stack with the LLC and SNDCP protocol layers and includes a simulation/test module of the user data which operates at IP level.
The functional decomposition of the protocol stack and the service of the layers' primitives is implemented in conformity with the GSM technical specifiations together with some extentions related to particular system test requirements. For this model the client application must manage the Mobility Management, the Session Management and theGSMS functions, and it must synchronise the simulation/test functions of the user data on the LSU+.

BSC/Gb Simulation



BSC/Gb Simulation
Real system layout
 


BSC/Gb Simulation
The LSU+ simulating the BSC on the Gb interface






For this application the minimum configuration includes: 

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SGSN Simulation



SGSN Simulation
Real system layout
 


SGSN Simulation
The LSU+ simulating the SGSN


  • Up to 8192 Kb/s of the global bandwidth.
  • Up to 16 PCM interfaces.
  • Multiple NSEI supported.
  • Concurrent logging of the signalling link.
For this application the minimum configuration includes: 

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GPRS Load & Stress

Stand Alone BSC

 


GPRS Load & Stress - Stand Alone BSC

For this application the minimum configuration includes: 

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GPRS Load & Stress

BSC & SGSN with simulated Abis

 


GPRS Load & Stress - BSC & SGSN with simulated Abis

For this application the minimum configuration includes: 

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GPRS Load & Stress

BSC & SGSN with real mobiles



GPRS Load & Stress - BSC & SGSN with mobiles

The GPRS MS Manager  manages operation of mobiles through scripts per group basis and collects the test results.
The GPRS Gi Manager  collects results of the tests from the Gi Interface point of view.

For this application the minimum configuration includes: 

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GPRS Load & Stress

BSC & SGSN with real & simulated mobiles

 


GPRS Load & Stress - BSC & SGSN with real and simulated MSs

For this application the minimum configuration includes: 

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LSU Abis Simulator
  HLR Simulator

Info: lsu@prisma-eng.it