The Jamming problem in IEEE 802.11‐based mobilead hocnetworks with hidden terminals: Performance analysis and enhancement
Yun Li, Chonggang Wang, Weiliang Zhao, Xiaohu You · International Journal of Communication Systems · 2009
Abstract The hidden‐terminal problem significantly degrades the performance of IEEE 802.11 DCF. Many previous works have investigated its influence on the throughput of CSMA‐based medium access control (MAC) protocols, especially IEEE 802.11 DCF. In this paper, we introduce a newJamming problemfor IEEE 802.11‐based mobilead hocnetworks, which is caused by hidden terminals. An analytical model is established for this problem. Based on this model, an adaptive DCF (ADCF), is designed to solve the jamming problem through adaptively adjusting the minimum contention window of hidden terminals. Simulation results effectively demonstrate that the proposed A‐DCF can avoid the jamming and in turn greatly improve channel utilization and throughput. Copyright © 2009 John Wiley & Sons, Ltd.