An Energy-Efficient Duty-Cycle MAC Protocol for Ultra-Dense Wireless Sensor Networks

International Journal of Computer Science and Technology | Vol. 9, No. 1, January 2007 | pp. 1–8

DOI: 10.46882/2007/IJCST/090129

Research Article

Title: An Energy-Efficient Duty-Cycle MAC Protocol for Ultra-Dense Wireless Sensor Networks

Names of Authors: Hans-Werner Schmidt¹, Fatma Al-Jahani²

Authors’ Affiliations: ¹Institut für Informatik, Technische Universität München, Munich, Germany; ²Department of Computer Science, Qatar University, Doha, Qatar

Abstract:
Data link layer interference and channel idle listening are primary factors behind premature battery drain in dense wireless sensor networks (WSNs). This paper introduces an adaptive duty-cycle Media Access Control (MAC) protocol designed to reduce energy consumption. The protocol uses a localized slot-allocation strategy that adjusts active listening durations based on structural queue thresholds and neighbor transmission counts. Network simulations with 400 sensor nodes distributed across a 1,000-meter line setup showed that the protocol extended the total operational network lifetime by 38.2% compared to standard S-MAC implementations. The average node energy consumption stabilized at P = 11.4 μW, while the packet loss index fell by 22.4% during burst data periods, confirming that adaptive sleep scheduling can improve network lifespan without causing data delivery bottlenecks.

Keywords: Wireless Sensor Networks, MAC Protocol, Duty-Cycle, Energy Efficiency, Sleep Scheduling

Manuscript Timeline: Received October 11, 2006; Revised November 22, 2006; Accepted December 15, 2006; Published January 24, 2007

Citation: Schmidt, H. W., & Al-Jahani, F. (2007). An Energy-Efficient Duty-Cycle MAC Protocol for Ultra-Dense Wireless Sensor Networks. International Journal of Computer Science and Technology, 9(1), 1–8.

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