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A System Level Simulator for Heterogeneous Wireless Sensor and Actuator Networks

Ahstract- This paper introduces Yet Another Wireless Network Simulator (YAWNS), a simulator supporting the development and automated validation of complex heterogeneous systems based on wireless sensor and actuator networks (WSANs). YAWNS allows simulation of heterogeneous systems through the use of a novel Virtual Radio Interface (VRI) abstraction that mimics the operation of physical radio hardware over a language independent simulation protocol. This simplifies system integration and decouples application languages and hardware from the simulation process, allowing evaluation and interoperability testing when using different languages, operating systems, applications and protocol implementations. The simulator is based on an extensible discrete-time engine coupled with a low-fidelity emulated medium allowing intuitive description of scenarios as well as simulation of complex dynamic and multiband environments with approximate real-world parity. A simple configuration language allows the definition of scenarios as well as events to update or validate the state of the simulation, allowing automated alteration of scenarios and evaluation of applications.