Delay-sensitive routing in multi-rate MANETs
Journal of Parallel and Distributed Computing
A novel CAC scheme for homogeneous 802.11 networks
IEEE Transactions on Wireless Communications
Proceedings of the 14th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
A simple critical-load-based CAC scheme for IEEE 802.11 DCF networks
IEEE/ACM Transactions on Networking (TON)
Performance analysis and comparison of burst transmission schemes in unsaturated 802.11e WLANs
Wireless Communications & Mobile Computing
Analysis of IEEE 802.11 DCF for ad hoc networks under nonsaturation conditions
Proceedings of the International Conference on Advances in Computing, Communications and Informatics
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We propose an approximate model for a nonsaturated IEEE 802.11 DCF network that is simpler than others that have appeared in the literature. Our key simplification is that the attempt rate in the nonsaturated setting can be approximated by scaling the attempt rate of the saturated setting with an appropriate factor. Use of different scaling factors leads to variants of the model for a small buffer and an infinite buffer. We develop a general fixed-point analysis that we demonstrate can have nonunique solutions for the infinite buffer model variant under moderate traffic. Nevertheless, in an asymptotic regime that applies to light traffic, we are able to prove uniqueness of the fixed point and predict the offered load at which the maximum throughput is achieved. We verify our model using ns-2 simulation and show that our MAC access delay results are the most accurate among related work, while our collision probability and throughput results achieve comparable accuracy to [1], [2].