Stochastic geometry models of mobile communication networks
Frontiers in queueing
Impact of fairness on Internet performance
Proceedings of the 2001 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Statistical bandwidth sharing: a study of congestion at flow level
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
SIGMETRICS '05 Proceedings of the 2005 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
A survey on discriminatory processor sharing
Queueing Systems: Theory and Applications
New insights from a fixed-point analysis of single cell IEEE 802.11 WLANs
IEEE/ACM Transactions on Networking (TON)
An improved model for GSM/GPRS/EDGE performance evaluation
Proceedings of the 4th international IFIP/ACM Latin American conference on Networking
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
Overcoming performance pitfalls in rate-diverse high speed WLANs
Computer Networks: The International Journal of Computer and Telecommunications Networking
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We study a wireless network under the 802.11 random access protocol, supporting multiple physical layer rates. Based on models for the effective packet rates achieved at the MAC layer, in both the downlink and uplink situations, we study the connection level dynamics. In particular, we study the Markov chain model that results from Poisson traffic being served by these MAC layer rates. For the downlink case, we show the equivalence of the model with a discriminatory processor sharing (DPS) queue, from which we derive stability conditions and study performance through the resulting connection level throughput. We also propose a variation of the flow scheduling policy at the access point that can result in a fairer allocation. For the uplink case, we derive stability conditions by identifying the asymptotic behavior of the chain with another DPS queue, and study its performance numerically. We validate the theory and cover other aspects neglected from the models, through ns2 packet simulations.