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http://dx.doi.org/10.6109/jicce.2012.10.1.021

Adjusting Transmission Power for Real-Time Communications in Wireless Sensor Networks  

Kim, Ki-Il (Department of Informatics, Engineering Research Institute, Gyeongsang National University)
Publication Information
Journal of information and communication convergence engineering / v.10, no.1, 2012 , pp. 21-26 More about this Journal
Abstract
As the new requirements for wireless sensor networks are emerging, real-time communications is becoming a major research challenge because resource-constrained sensor nodes are not powerful enough to accommodate the complexity of the protocol. In addition, an efficient energy management scheme has naturally been a concern in wireless sensor networks for a long time. However, the existing schemes are limited to meeting one of these two requirements. To address the two factors together, we propose real-time communications with two approaches, a protocol for satisfied conditions and one for unsatisfied. Under the satisfied requirement, existing real-time protocol is employed. On the other hand, for the unsatisfied requirement, the newly developed scheme replaces the existing scheme by adjusting the transmission range of some surplus nodes. By expanding the transmission range, the end-to-end delay is shortened because the number of intermediate nodes decreases. These nodes conserve their energy for real-time communications by avoiding other activities such as sensing, forwarding, and computing. Finally, simulation results are given to demonstrate the feasibility of the proposed scheme in high traffic environments.
Keywords
Real-time communications; Wireless sensor networks; Transmission range;
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1 P. Jurcik, A. Koubaa, M. Alves, E. Tovar, and Z. Hanzalek, "A simulation model for the IEEE 802.15.4 protocol: delay/throughput evaluation of the GTS mechanism," 15th International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunication Systems, Istanbul, pp. 109-116, 2007.
2 E. Bulut and I. Korpeoglu, "Sleep scheduling with expected common coverage in wireless sensor networks," Wireless Networks, vol. 17, no. 1, pp. 19-40, 2011.   DOI
3 I. F. Akyildiz, W. Su, Y. Sankarasubramaniam, and E. Cayirci, "A survey on sensor networks," IEEE Communications Magazine, vol. 40, no. 8, pp. 102-114, 2002.
4 T. Yardibi and E. Karasan, "A distributed activity scheduling algorithm for wireless sensor networks with partial coverage," Wireless Networks, vo1. 16, 2010.
5 A. Bari, U. Xu, X. Wu, and A. Jaekel, "Design of sensor networks with guaranteed connectivity and lifetime," Proceedings of the 3rd International Conference on Wireless Internet, Paris, 2007.
6 R. Katsuma, Y. Murata, N. Shibata, and K. Yasumoto, "Extending k-coverage lifetime of wireless sensor networks with surplus nodes," Proceedings of 5th International Conference on Mobile Computing and Ubiquitous Networking, Seattle, pp. 9-16, 2010.
7 E. Bulut, and I. Korpeoglu, "DSSP: a dynamic sleep scheduling protocol for prolonging the lifetime of wireless sensor networks," 21st International Conference on Advanced Information Networking and Applications Workshop, Niagara Falls, pp. 725-730, 2007.
8 D. Tian and N. D. Georganas, "A coverage-preserving node scheduling scheme for large wireless sensor networks," Proceedings of the 1st ACM International Workshop on Wireless Sensor Networks and Applications, Atlanta, pp. 32-41, 2002.
9 T. He, J. A. Stankovic, C. Lu, and T. Abdelzaher, "SPEED: a stateless protocol for real-time communication in sensor networks," Proceedings of the 23rd International Conference on Distributed Computing Systems, Providence, pp. 46-55, 2003.
10 E. Felemban, C. Lee, and E. Ekici, "MMSPEED: multipath multi- SPEED protocol for QoS guarantee of reliability and timeliness in wireless sensor networks," IEEE Transactions on Mobile Computing, vol. 5, no. 6, pp. 738-754, 2006.   DOI   ScienceOn