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Title
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Spatial fairness in multi-channel CSMA line networks
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Author
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Abstract
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| In this paper we consider a multi-channel random-access carrier-sense multiple access (CSMA) line network with n saturated links, where each link can be active on at most k of the C available channels at any time. Using the product form solution of such a network, we develop fast algorithms to compute the per-link throughputs and use these to study the spatial fairness in such a network. Recently it was shown that fairness in a single channel CSMA line network can be achieved by means of a simple formula for the activation rates, which depends solely on the number of interfering neighbors. In this paper we show that this formula still achieves fairness in the multi-channel setting under heavy traffic, but no such simple formula seems to exist in general, unless k equals C. On the other hand, numerical experiments show that the fairness index when using the simple single channel formula in the multi-channel setting is close to one and tends to improve as k increases. In other words this simple formula eliminates most of the spatial unfairness in a multi-channel network, especially when k is close to C. (C) 2016 Elsevier B.V. All rights reserved. |
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Language
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English
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Source (journal)
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Performance evaluation. - Amsterdam
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Source (book)
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8th International Conference on Performance Evaluation Methodologies and, Tools (ValueTools), DEC 09-11, 2014, Bratislava, SLOVAKIA
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Publication
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Amsterdam
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Elsevier science bv
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2016
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ISSN
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0166-5316
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DOI
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10.1016/J.PEVA.2016.06.002
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Volume/pages
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103
(2016)
, p. 69-85
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ISI
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000386194200006
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Full text (Publisher's DOI)
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