Abstract
Wireless Nano Sensor Networks (WNSNs) are a dense deployment of nano sensors that communicate through electromagnetic waves over the Terahertz band (0.1–10 THz). The extreme energy, processing power and memory capacity limitation of nano-scale devices and the peculiarities of high operating frequency introduce the requirement to design novel communication paradigm and light MAC protocols for WNSNs. In this paper, we present a new Energy Efficient Wireless Nano Sensor Network MAC protocol (EEWNSN-MAC) for mobile multi-hop wireless nanonetworks. The proposed protocol takes advantage of the clustering mechanism and TDMA scheduling scheme to alleviate the mobility effects and transmission collisions. We evaluate performance of the EEWNSN-MAC protocol compared with a similar previously proposed nano-MAC protocol called “Smart-MAC”. For this purpose, we utilize a new NS-3 simulator module named nano-sim. This evaluation is done for three critical metrics in WNSN, namely, the total energy that is consumed per sent/received packet on the network, the packet loss ratio (PLR) and scalability. Finally, the simulation results demonstrate that the EEWNSN-MAC protocol improves the network performance in terms of energy consumption and PLR and it is more scalable compared to the “Smart-MAC” algorithm.
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