Hierarchical federations: an architecture for information hiding
Proceedings of the fifteenth workshop on Parallel and distributed simulation
Bridging the HLA: Problems and Solutions
DS-RT '02 Proceedings of the Sixth IEEE International Workshop on Distributed Simulation and Real-Time Applications
Proposal of high level architecture extension
AIS'04 Proceedings of the 13th international conference on AI, Simulation, and Planning in High Autonomy Systems
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High Level Architecture (HLA) is a standard architecture for interoperation between heterogeneous simulations, and Runtime Infrastructure (RTI) is the implementation of the HLA interface specification. A limitation of the current HLA is that it allows only single federation and the federation has one Federation Object Model (FOM) which is merged with different organizations. In addition, the information hiding problem which opens all data within their federation is raised. To overcome such limitations, we propose an architecture of Hierarchical Runtime Infrastructure (HRTI). The objectives of HRTI are 1) being compliance with HLA interface and 2) supporting multiple federations with hierarchical structure in any depth. This paper deals with the design and implementation of HRTI and the selective information control which is the solution of the information hiding problem. Furthermore, as HRTI makes a federation to be a joined federate at the higher federation level without any modifications of federate code, it promotes HLA interoperability and reusability at the federation level. The proposed HRTI is implemented by applying the Dynamic Link Compatible (DLC) APIs with C++. The design and the experimental results show that the HRTI may facilitate the practical usage of simulation interoperations by ensuring the selective information hiding while the HRTI complies the existing HLA standards