FDT-MAC: A New Multi-channel MAC Protocol Based on Fuzzy Decision Tree for Wireless Sensor Network

摘要

The current popular multi-channel Medium Access Control (MAC) layer protocol adopts a strategy of separating control and data channels, in order to improve channel utilization and packet forwarding success rate. However, the randomness of the data access and the high mobility of the nodes will lead to switch channels too frequently, which will still increase the packet transmission latency. Therefore, this paper proposes a fuzzy decision tree for MAC (FDT-MAC) protocol, which constructs the fuzzy decision tree of the nodes sub-tree. FDT-MAC utilizes fuzzy reasoning method to construct the membership function of the node collision factor (NCF) and node relative direction (NRD) factor. So that the node can quickly select the appropriate channel according to the real-time status (Output value) of each channel, reduce the collision probability of the packet, and improve the delivery probability (90%) and throughput of the channel (750 bps).