Grid Based Energy-Aware MAC Protocol for Wireless Nanosensor Network

Wireless Nano sensor Networks (WNSNs) are enabling advanced nanotechnology applications in the medical, industrial, biomedical, military, and environmental fields. Nano-devices communicate in the Terahertz band and provide a very large transmission bit-rate at the cost of high propagation delay resulting in a short communication distance due to Terahertz band peculiarities. Thus, classical MAC protocols cannot be used. This paper proposes an energy- aware Medium Access Control (MAC) protocol for WNSNs in the Terahertz band to synchronize the nano-devices communication. The proposed communication scheme is based on a Time spread on- off keying (TS-OOK). It's also based on active transmitter nodes transmitting their packets in an interleaving way on a symbol basis to their relay receivers in the neighbour grid based on the calculated CTR value. The performance of the proposed model is analytically analysed in terms of consumed energy, probability of collisions, transmission delay and network throughput. The results show that the proposed grid based MAC can increase the transmitter throughput by efficiently utilizing the very large terahertz band.