| Summary: | A wireless sensor/actuator network (WSAN) is a group of sensors and actuatorsthat are geographically distributed and interconnected by wireless networks. Sensorsgather information about the state of physical world. Actuators react to this information byperforming appropriate actions. WSANs thus enable cyber systems to monitor andmanipulate the behavior of the physical world. WSANs are growing at a tremendous pace,just like the exploding evolution of Internet. Supporting quality of service (QoS) will be ofcritical importance for pervasive WSANs that serve as the network infrastructure ofdiverse applications. To spark new research and development interests in this field, thispaper examines and discusses the requirements, critical challenges, and open researchissues on QoS management in WSANs. A brief overview of recent progress is given.
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