Sniffing Out the Correct Physical Layer Capture Model in 802.11b
ICNP '04 Proceedings of the 12th IEEE International Conference on Network Protocols
Wireless Communications & Mobile Computing - Special Issue: Emerging WLAN Apllications and Technologies
Understanding the real-world performance of carrier sense
Proceedings of the 2005 ACM SIGCOMM workshop on Experimental approaches to wireless network design and analysis
Overhaul of ieee 802.11 modeling and simulation in ns-2
Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems
Location-Aware IEEE 802.11 for Spatial Reuse Enhancement
IEEE Transactions on Mobile Computing
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In this paper we identify the mechanisms in the IEEE 802.11 standard which limit medium reuse by not allowing concurrent transmissions even when they are actually possible. To improve medium reuse we propose an interference management protocol, PCONAV, which cognitively enables and disables the virtual (NAV) and physical carrier sensing (CCA) according to the interference environment. We combine this mechanisms with address filtering and capture and demonstrate improved medium reuse. The proposed cognitive mechanisms are further enhanced with a tuning mechanism that adapts the carrier sensing threshold (CST) at each node. Simulations are used to show the improved performance obtained with each of the proposed mechanisms.