Adaptive backoff scheme forad hocnetworks based on IEEE 802.11
Chien‐Min Wu, Ting‐Chao Hou, Maw‐Lin Leou, Yi‐Ching Liaw, Ming‐Chieh Chan · International Journal of Communication Systems · 2010
Abstract The performance of backoff scheme plays an important role in designing efficient Medium Access Protocols forad hocnetworks. In this paper, we propose an adaptive backoff scheme and evaluate the performance of the proposed scheme forad hocnetworks. The backoff mechanism devised by us grants a node access to the channel based on its probability of collision for a transmitted frame in comparison to the nodes in the two‐hop contention area. We use both an analytical model and simulation experiments to evaluate the performance of our adaptive backoff mechanism in anad hocnetwork. The results show that our protocol exhibits a significant improvement in power saving, end‐to‐end goodput, packet delivery ratio, and hop‐put, compared with the existing IEEE 802.11 DCF. Copyright © 2010 John Wiley & Sons, Ltd.