Simulation, Test and Reference Environment for Mobile Operations (“SumO”)

As part of the SumO project, Fraunhofer IIS together with the Bundeswehr Technical Center for Information Technology and Electronics (WTD 81) creates the design concept and develops specific test and measurement equipment as well as an automated sequence control system for a simulation, test, and reference environment for mobile operations. Fraunhofer IIS is contributing its expertise and project experience acquired in the field of radio channel modeling and emulation.

The aim is to set up a permanent, flexible test infrastructure to be used for various validation and verification tests. SumO – the simulation, test, and reference environment for mobile operations – operates across different laboratories and locations and can integrate existing test and analysis facilities.

One single architecture for various component, connection, and system tests

Current information and communications networks are built on IP-based communication. In this regard, it is important that these networks provide the applications with a sufficient connection quality, in other words, that they transmit speech with sufficient intelligibility and without any disruptive delays, for example. This is challenging, particularly for heterogeneous networks with mobile data transmission, as often only low transmission rates with sometimes high latency are available.

When setting up complex wireless networks, all components must therefore be carefully selected and coordinated with one another. During operation, it must be ensured that all applications can be used with the required quality at all times. This is a complex task that, depending on the information exchange requirements and the technical boundary conditions, demands difficult network balancing, configuration, parametrization, and adaptation. This calls for an appropriate test environment that brings a wide variety of component, connection, and system tests together in an overall architecture. It must also enable ongoing testing of an integrated network’s performance, examination of its behavior, and discovery of an optimum configuration and parametrization.

The test environment developed in the SumO project offers the following opportunities:

  • Creation of objectively comparable and reproducible test results and reports as part of integrated verification in a test framework that is recognized and can be used as a reference
  • Product- and manufacturer-neutral system tests to determine the performance of individual components or systems throughout the entire communication chain
  • Support in defining and developing a communications network in the analysis and implementation phase
  • Integration and interoperability tests between different systems and devices, even after updates and product improvements/adjustments in the usage phase
  • Tests for integrating system/product proposals into the integrated network
  • Approval and acceptance tests to determine requirements coverage
  • Validation of new configurations and configuration states within the integrated network
  • Error analysis under realistic and reproducible conditions across all levels of a complex and heterogeneous communications network

The architecture of the SumO software framework supports:

Test preparation

  • Graphical user interface (GUI) for easy operation
  • Software libraries for test sequence control as well as for control of devices under test (DUTs) and measuring devices
  • Templates for test cases
  • Verification of the test setup, e.g., by checking the accessibility of components and validating the consistency of parameters


  • Automated testing
  • Definable outputs (test sequence, states, results) during tests for improved monitoring of a correct test sequence

Test evaluation

  • Automatic report generation
  • Archiving of test results including configurations of the test setup, software version, and log files

All in all, SumO is a complex test system that has a wide range of functions and is easy to use. Users are given access to standardized test procedures and result logs. The test system also offers a high degree of transparency with regard to the results, since log files that log the results at definable measurement and test points in the setup can be accessed. Black-, gray-, and white-box tests can therefore also be combined in a highly heterogeneous integrated network. At the same time, the uniform, documented test procedures foster acceptance of the test results among users and component manufacturers.

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