A Low Duty Cycle MAC Protocol for Directional Wireless Sensor Networks |
| |
Authors: | Fernaz Narin Nur Selina Sharmin Md Abdur Razzaque Md Shariful Islam Mohammad Mehedi Hassan |
| |
Affiliation: | 1.Green Networking Research (GNR) Group, Department of Computer Science and Engineering,University of Dhaka,Dhaka,Bangladesh;2.Institute of Information Technology (IIT),University of Dhaka,Dhaka,Bangladesh;3.College of Computer and Information Sciences,King Saud University,Riyadh,Saudi Arabia |
| |
Abstract: | Directional communication in wireless sensor networks minimizes interference and thereby increases reliability and throughput of the network. Hence, directional wireless sensor networks (DWSNs) are fastly attracting the interests of researchers and industry experts around the globe. However, in DWSNs the conventional medium access control protocols face some new challenges including the synchronization among the nodes, directional hidden terminal and deafness problems, etc. For taking the advantages of spatial reusability and increased coverage from directional communications, a low duty cycle directional Medium Access control protocol for mobility based DWSNs, termed as DCD-MAC, is developed in this paper. To reduce energy consumption due to idle listening, duty cycling is extensively used in WSNs. In DCD-MAC, each pair of parent and child sensor nodes performs synchronization with each other before data communication. The nodes in the network schedule their time of data transmissions in such a way that the number of collisions occurred during transmissions from multiple nodes is minimized. The sensor nodes are kept active only when the nodes need to communicate with each other. The DCD-MAC exploits localized information of mobile nodes in a distributed manner and thus it gives weighted fair access of transmission slots to the nodes. As a final point, we have studied the performance of our proposed protocol through extensive simulations in NS-3 and the results show that the DCD-MAC gives better reliability, throughput, end-to-end delay, network lifetime and overhead comparing to the related directional MAC protocols. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|