Direct links in IEEE 802.11: Analytical study of unfairness problem

Authors:
A. Lyakhov;I. Pustogarov;A. Gudilov
Affiliations:
Institute for Information Transmission Problems (Kharkevich Institute), Russian Academy of Sciences, Moscow, Russia;Institute for Information Transmission Problems (Kharkevich Institute), Russian Academy of Sciences, Moscow, Russia;Moscow Institute for Physics and Technology, Moscow, Russia
Venue:
Automation and Remote Control
Year:
2008

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Abstract

In this paper, the problem of mutual interference between direct links in IEEE 802.11 networks is represented. This problem is common for direct links in infrastructure networks with hidden terminals and for mesh networks as well. In this paper, we develop analytical models to study the impact of the direct link interference on links performance indices in various cases of links disposition. With these models proved by simulation, we show that network capacity distribution between direct links is unfair in many cases, explaining the reasons of the unfairness in every case. As a conclusion, we discuss possible mechanisms to solve the unfairness problem.