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Wireless sensor networks are moving towards emerging standards such as IP, ZigBee and WirelessHART which makes interoperability testing important. Interoperability testing is today performed through black-box testing with vendors physically meeting to test their equipment. For interoperability testing of these standards, a white-box approach is desired, since it gives both details on performance and clues about why tests succeeded or failed. To enable white-box testing, the authors propose a simulation-based approach. They extend their MSPSim emulator and COOJA wireless sensor network simulator to support interoperable simulation of sensor nodes with firmware from different vendors.
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