Heuristic Routing for Software Defined Wireless Sensor Network

This paper addresses the uplink and downlink routing mechanisms in software defined wireless sensor network (SDN-WSN). We proposed an integrated communication protocol, called MINI-FLOW, that surrounds three data routing mechanism, the uplink routing (from the end nodes to the controller), the downlink routing (from the controller to the end nodes) and the information reporting in the network initialization level (i.e., when the controller knows nothing about the end nodes). The routing mechanism is designed based on a heuristic function that captures three values, the number of hops to the sink, the Received Signal Strength (RSS) and the remaining energy. The experimental results show that MINI-FLOW scales well with both network size and density, considering the combined problem of routing and load balancing.