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Journal of Information Science and Engineering, Vol. 23 No. 4, pp. 1057-1071 (July 2007)

C-MAC: An Energy-Efficient MAC Scheme Using Chinese-Remainder-Theorem for Wireless Sensor Networks

Yuh-Shyan Chen and Yun-Wei Lin
1Department of Computer Science and Information Engineering
National Taipei University
Taipei, 237 Taiwan
2Department of Computer Science and Information Engineering
National Chung Cheng University
Chiayi, 621 Taiwan

This paper investigates a new TDMA-based MAC, called C-MAC (MAC using Chinese remainder theorem), protocol with low power consumption while maintaining low packet latency for largescale cluster-based WSNs. To offer low power consumption, each node and coordinator to be active and sleep states based on the time-slot schedule of Chinese remainder theorem. To provide low packet latency, our C-MAC protocol provides an adaptive time-slot scheme to distributively and dynamically wake up time slots for the burst data transmission in a duty cycle. Finally, simulation results illustrate our performance achievements to verify that C-MAC performs better than existing TDMAbased MAC protocols, BMA and EMAC, in terms of power consumption and average packet latency.

Keywords: wireless sensor networks, MAC, latency, energy efficient operation, energyefficient scheduling

Full Text () Retrieve PDF document (200707_07.pdf)

Received September 15, 2006; accepted February 6, 2007.
Communicated by Ten H. Lai, Chung-Ta King and Jehn-Ruey Jiang.