“…In recent years, an important network paradigm of Edge computing, namely Wireless Sensor and Actuator Networks (WSANs) [ 6 , 7 ], has entered a stage of rapid development, and more and more WSANs-based Edge computing systems have been used in a lot of applications, such as new energy resources [ 8 ], industrial automation [ 9 ], smart agriculture [ 10 ], intelligent transportation [ 11 ], building automation [ 12 ], and environment monitoring and protection [ 13 , 14 ]. Unlike Wireless Sensor Networks (WSNs) [ 15 , 16 , 17 ], which mainly contain sensor nodes organized in a wireless and Ad-hoc manner, WSANs are heterogeneous networks and consist of not only sensor nodes but also actuators.…”