Improving Energy Efficiency in QoS-Enabled Wireless Sensor Networks

In this paper, a heuristic approach is proposed to solve the problem of supporting both energy efficiency and quality of service (QoS) in time division multiple access (TDMA) based wireless sensor networks (WSNs). The proposed approach consists of a linear cross-layer optimization model and a slot reuse based TDMA scheduling algorithm, which are jointly inter-connected through a hop distance/slot reuse control parameter. Compared to existing approaches, both the analysis and simulation results show that the proposed approach provides more choices in deriving the optimal solution, which achieves significant power savings and competitive QoS support.

[1]  Deborah Estrin,et al.  Medium access control with coordinated adaptive sleeping for wireless sensor networks , 2004, IEEE/ACM Transactions on Networking.

[2]  Lei Zhao,et al.  Energy Efficient Design of WSN Based on an Accurate Power Consumption Model , 2007, 2007 International Conference on Wireless Communications, Networking and Mobile Computing.

[3]  Liqi Shi,et al.  Energy efficient reuse set formulation with end-to-end packet loss constraint in TDMA based wireless sensor networks , 2009, IWCMC.

[4]  Ian F. Akyildiz,et al.  Sensor Networks , 2002, Encyclopedia of GIS.

[5]  Andrea J. Goldsmith,et al.  Design challenges for energy-constrained ad hoc wireless networks , 2002, IEEE Wirel. Commun..

[6]  Andrea J. Goldsmith,et al.  Cross-Layer Energy and Delay Optimization in Small-Scale Sensor Networks , 2007, IEEE Transactions on Wireless Communications.

[7]  John G. Proakis,et al.  Digital Communications , 1983 .

[8]  Marco Zuniga,et al.  Analyzing the transitional region in low power wireless links , 2004, 2004 First Annual IEEE Communications Society Conference on Sensor and Ad Hoc Communications and Networks, 2004. IEEE SECON 2004..

[9]  Stephen P. Boyd,et al.  Convex Optimization , 2004, Algorithms and Theory of Computation Handbook.

[10]  Byeong Gi Lee,et al.  A Cross-Layer Strategy for Energy-Efficient Reliable Delivery in Wireless Sensor Networks , 2006, IEEE Transactions on Wireless Communications.

[11]  Theodore S. Rappaport,et al.  Wireless communications - principles and practice , 1996 .

[12]  Dario Pompili,et al.  The State of the Art in Cross-Layer Design for Wireless Sensor Networks , 2005, EuroNGI Workshop.

[13]  Liqi Shi,et al.  TDMA Scheduling with Optimized Energy Efficiency and Minimum Delay in Clustered Wireless Sensor Networks , 2010, IEEE Transactions on Mobile Computing.