Exploitation of SMAC for Energy Optimization in WSNs in Dynamic Spectrum Access

In the present era, Wireless sensor networks has emerged as one of the most prominent area in the field of research. In wireless networks, most of the bandwidth goes unutilized in fixed spectrum allocation. In order to acknowledge the mentioned problem, we have implemented WSNETs, using dynamic spectrum allocation technique. We have simulated and implemented TDMA based protocol known as SMAC as it allows to access multiple channels at a time. The single channel medium access protocol suffers from multi-channel hidden terminal problem. The SMAC protocol overcomes this problem as it allows the other users (secondary users) to sense and utilize the bandwidth which is left unused by the primary users. A comparison is made between IEEE 802.11 and the proposed SMAC model. The results of the simulation show that the proposed model is energy efficient and have high network throughput. The complete model is deployed over NS2.