DEVS namespace for interoperable DEVS/SOA

Interoperable DEVS modeling and simulation is desirable to enhance model composability and reusability with DEVS models and non-DEVS models in different languages and platforms. The barrier to such interoperability is that DEVS simulators implement the DEVS modeling formalism in diverse programming environments. Although the DEVS formalism specifies the same abstract simulator algorithm, different simulators implement the same abstract simulator in different ways. This situation inhibits interoperating DEVS simulators and prevents simulation of heterogeneous models. Service Oriented Architecture provides a flexible approach to interoperability than because it provides platform independence and employs platform-neutral message passing with Simple Object Access Protocol to communicate between a service and a client. The main contribution of this study is to design and implement an interoperable DEVS simulation environment using the SOA concept and a new construct called the DEVS message namespace. The interoperable DEVS environment consists of a DEVS simulator service and an associated integrator. Using the DEVS namespace, DEVS simulator services can be interoperable with other such services using the same message types.