Tuning the carrier sensing range of IEEE 802.11 MAC
Jing Wei Deng, Ben Liang, Pramod K. Varshney · 2005
We investigate the effects of the carrier sensing range of the IEEE 802.11 multiple access control (MAC) scheme in this paper. Contrary to the simple and inaccurate cut-off circular collision model that is commonly used, we employ a more accurate collision model to realistically simulate MAC schemes in ad hoc networks. We argue that the carrier sensing range is a tunable parameter that can significantly affect the MAC performance in multihop ad hoc networks. An optimal carrier sensing range should balance the trade-off between the amount of spatial frequency reuse and the possibility of packet collisions. A reward formulation for the optimization of the carrier sensing range is presented. Extensive simulation results are provided to substantiate our study.