Run-time infrastructure of distributed simulation based on Web services

To improve reusability and interoperability of High Level Architecture (HLA), traditional HLA distributed simulation model was decoupled by using simulation application layer and simulation communication layer to separate simulation model and local Run-Time Infrastructure (RTI)component. A model of HLA distributed simulation with low coupling and HLA distributed simulation architecture based on Web Services was proposed. RTI based on Web Services (RTI-WS) was designed and prototype was developed, and its significance and corresponding performance analysis was explained subsequently. HLA-compatible federates could communicate with RTI on both wide area network and local area network by Simple Object Access Protocol (SOAP)/HyperText Transport Protocol (HTTP) through most firewalls. RTI and federates were deployed as Web Services and could be integrated easily over the Internet. RTI-WS could enhance the reusability and interoperability of HLA distributed simulation with certain performance loss. Current research in progress indicated that RTI-WS was suitable for coarse-grained distributed simulation applications.