EURASIP Journal on Wireless Communications and Networking 
Volume 2005 (2005), Issue 4, Pages 493-504
doi:10.1155/WCN.2005.493

MAC Protocols for Optimal Information Retrieval Pattern in Sensor Networks with Mobile Access

Zhiyu Yang,1 Min Dong,2 Lang Tong,1 and Brian M. Sadler3

 1School of Electrical and Computer Engineering, Cornell University, Ithaca 14853, NY, USA
2Corporate Research & Development, QUALCOMM Incorporated, 5775 Morehouse Drive, San Diego 92121, CA, USA
3Army Research Laboratory, Adelphi 20783-1197, MD, USA
Received 9 December 2004

Abstract

In signal field reconstruction applications of sensor network, the locations where the measurements are retrieved from affect the reconstruction performance. In this paper, we consider the design of medium access control (MAC) protocols in sensor networks with mobile access for the desirable information retrieval pattern to minimize the reconstruction distortion. Taking both performance and implementation complexity into consideration, besides the optimal centralized scheduler, we propose three decentralized MAC protocols, namely, decentralized scheduling through carrier sensing, Aloha scheduling, and adaptive Aloha scheduling. Design parameters for the proposed protocols are optimized. Finally, performance comparison among these protocols is provided via simulations.