Since it is very hard for cluster-based WSN(Wireless Sensor Network) to implement efficient and secure communication either with CSMA or TDMA. In view, of the existing situation, a STC-MAC protocol has been put forward, which mingled with CSMA and TDMA and brought about better bottom-layer security. On the one hand, the wireless channel allocated by TDMA in intra-cluster nodes is able to cope with collision and crosstalk to achieve low latency. On the other hand, with the allocation of CSMA between cluster-head nodes, the channel can avoid multiple hops synchronization and enhance scalability....
