Please use this identifier to cite or link to this item: https://doi.org/10.1145/2512840.2512850
Title: Modeling CSMA/CA network under asymmetric conditions
Authors: Wang, H.
Ooi, W.T. 
Chan, M.C. 
Keywords: asymmetry
contention window
csma/ca
fairness
Issue Date: 2013
Source: Wang, H.,Ooi, W.T.,Chan, M.C. (2013). Modeling CSMA/CA network under asymmetric conditions. PM2HW2N 2013 - Proceedings of the 8th ACM Workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks, Co-located with ACM MSWiM 2013 : 67-74. ScholarBank@NUS Repository. https://doi.org/10.1145/2512840.2512850
Abstract: Prior work reveals that unfairness in CSMA networks is mainly caused by three asymmetries: (i) information asymmetry; (ii) channel asymmetry; and (iii) rate asymmetry. In this paper, we develop a simple yet accurate analytical model that jointly characterizes all three asymmetric conditions. Our model allows us to estimate the throughput of two contending flows, given the contention window (CW) values. The model can be applied to remedy unfair issues in these topologies, by enabling CW tuning mechanisms to quantify the resulting throughput. The model is flexible enough to support three different fairness objectives. Further, we illustrate how to apply our CW tuning mechanism to an extensive set of asymmetric topologies. Using simulations and testbed measurements, we show that our CW tuning mechanism is effective in mitigating unfairness in the presence of the three fundamental asymmetric conditions. © 2013 ACM.
Source Title: PM2HW2N 2013 - Proceedings of the 8th ACM Workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks, Co-located with ACM MSWiM 2013
URI: http://scholarbank.nus.edu.sg/handle/10635/78239
ISBN: 9781450323710
DOI: 10.1145/2512840.2512850
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