Research Article
Modeling Multi-Cell IEEE 802.11 WLANs with Application to Channel Assignment
@INPROCEEDINGS{10.1109/WIOPT.2009.5291584, author={Manoj Panda and Anurag Kumar}, title={Modeling Multi-Cell IEEE 802.11 WLANs with Application to Channel Assignment}, proceedings={5th International Workshop on Resource Allocation, Cooperation and Competition in Wireless Networks}, publisher={IEEE}, proceedings_a={RAWNET / WNC3}, year={2009}, month={10}, keywords={throughput modeling; fixed point analysis; channel assignment algorithm; Nash equilibria}, doi={10.1109/WIOPT.2009.5291584} }- Manoj Panda
Anurag Kumar
Year: 2009
Modeling Multi-Cell IEEE 802.11 WLANs with Application to Channel Assignment
RAWNET / WNC3
IEEE
DOI: 10.1109/WIOPT.2009.5291584
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 decentralized algorithm which provides static channel 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. In contrast to prior work, our approach to channel assignment is based on the throughput metric.