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Modeling multi-cell IEEE 802.11 WLANs with application to channel assignment

Publication Type : Conference Proceedings

Publisher : 2009 7th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks

Source : 2009 7th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (2009)

Url : https://ieeexplore.ieee.org/document/5291584

Keywords : Access points, Algorithm design and analysis, Analytical models, carrier sensing, cellular radio, channel allocation, channel assignment algorithm, channel assignment assignment, Electronic mail, fixed point analysis, Internet, IP networks, Local area networks, Media Access Protocol, multicell IEEE 802.11 WLAN, Nash equilibria, network throughput metric, Network topology, normalized network throughput, scalable cell level model, TCP-controlled file, telecommunication network topology, Throughput, throughput modeling, transport protocols, wireless channels, wireless LAN

Campus : Bengaluru

School : School of Engineering

Department : Electronics and Communication

Year : 2009

Abstract : We provide a simple and accurate analytical model for multi-cell IEEE 802.11 WLANs. Our model applies if the cell radius, R, is much smaller than the carrier sensing range, Rcs. We argue that, the condition Rcs >> R is likely to hold in a dense deployment of access points (APs). We develop a scalable cell level model for such WLANs with saturated nodes as well as for TCP-controlled long file downloads. The accuracy of our model is demonstrated by comparison with ns-2 simulations. Based on the insights provided by our analytical model, we propose a simple channel assignment algorithm which provides static assignments that are Nash equilibria in pure strategies for the objective of maximizing normalized network throughput, and requires only as many steps as there are channels. Furthermore, our channel assignment algorithm does not require any a priori knowledge of topology and can be implemented in a decentralized manner. In contrast to prior work, our approach to channel assignment is based on the throughput metric.

Cite this Research Publication : Manoj Kumar Panda and Kumar, A., “Modeling multi-cell IEEE 802.11 WLANs with application to channel assignment”, 2009 7th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks. 2009.

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