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DCDS-MAC: A Dual-Channel Dual-Slot MAC Protocol for Delay Sensitive Wireless Sensor Network Applications

Abul K. Azad 1,2, Mohammad S. Alam 2, Shamim A. Shawkat 2,3
1. Department of Computer Science and Telecommunication Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
2. Institute of Information and Communication Technology, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh
3. Department of Electrical Engineering and Computer Science, University of Tennessee Knoxville, Tennessee, 37996, USA

Abstract—The application areas of Wireless Sensor Networks (WSNs) are expanding with time. Many of these applications demand a lower end-to-end delay, high throughput, and energy-efficient operations. The performance of these applications mostly relies on the performance of the MAC protocol. This paper presents a Dual-Channel Dual-Slot MAC (DCDS-MAC) protocol for WSNs, which significantly reduces the end-to-end delay and improves the throughput while ensuring energy-efficient operations. In the proposed protocol, the delay problem of existing Lightweight MAC (LMAC) and Multi-Channel LMAC (MC-LMAC) protocol has significantly improved by using suitable destination selection technique by data packet sending node and allowing a node to transmit its packet using a timeslot pair of a channel over two different channels. The timeslot pair is kept half of the frame time separated which is decided by an algorithm. Moreover, the schedule-based operations ensure an energy-efficient operation and use of two-channel results high throughput. Finally, extensive simulations are carried out in OMNeT++ to compare the performance of proposed DCDS-MAC protocol with the existing LMAC and MC-LMAC protocol, in terms of received packets, delay, energy consumption and network lifetime. Simulation results ensure that the proposed protocol performs a significant improvement in delay and throughput over existing protocols without consuming much energy.

Index Terms—Wireless sensor network, medium access control, schedule-based MAC protocol, energy-efficiency, end-to-end delay.

Cite: Abul K. Azad, Mohammad S. Alam, and Shamim A. Shawkat, “DCDS-MAC: A Dual-Channel Dual-Slot MAC Protocol for Delay Sensitive Wireless Sensor Network Applications,”Journal of Communications vol. 14, no. 11, pp. 1049-1058, 2019. Doi: 10.12720/jcm.14.11.1049-1058.