Abstract
In this paper, we propose a broadcast-based receiver-initiated low-delay wake-up radio (RI-LD-WuR) Medium Access Control (MAC) protocol for wireless sensor networks. RI-LD-WuR MAC improves delay and energy-efficiency by reducing the packet collisions. We reduce the packet collisions by reducing the contention during channel access. We design a new cycle structure and divide the nodes into K groups to decrease the contention during channel access. We propose an algorithm to determine the value of K that provides the lowest delay. To evaluate the performance, we develop a discrete-time Markov-chain (DTMC) model and drive expressions for packet delivery ratio, average energy consumption per transmitted data packet, and delay. Numerical results demonstrate the superiority of the RI-LD-WuR MAC protocol.
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