A MAC Protocol for Critical Data Transmission in Wireless Sensor Networks
Seong‐Cheol Kim · Applied Mechanics and Materials · 2013
In this paper we present a low-power, low-latency MAC protocol adequate for critical data transmission. For support critical data packet transmission the proposed MAC protocol uses the modified IEEE 802.15.4 beacon frames including priority bit, sender node address, and NAV value fields. A receiver node periodically wakes up, receives sender beacon frames from its neighbor nodes, selects a data sending node, and broadcasts a beacon frame containing the selected sender’s address. Based on the sender’s data transmission urgency, a receiver node selects a data packet sending node. So critical data packet will be considered higher priority packet and be sent preferentially. Our simulations and analytical analysis have shown that our protocol outperforms other protocols in terms of energy consumption and higher priority packet delivery delay.