Physical model based interference classification and analysis

Authors:
Artem Krasilov
Affiliations:
Institute for Information Transmission Problems, Russian Academy of Science, Moscow, Russia
Venue:
MACOM'10 Proceedings of the Third international conference on Multiple access communications
Year:
2010

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Abstract

Interference of links in wireless mesh networks has a great impact on the network performance. Most of previous studies of this problem are based on unrealistic interference models which in some cases lead to erroneous results. In this paper, based on realistic physical interference model we give a full classification of interference cases for two links, provided that stations composing these links are arranged on one line and data flows have the same direction. We show that in some cases channel capacity distribution between links is severe unfair and analyze how the probabilities of appearance of these cases depend on the parameters of physical layer of IEEE 802.11 and relative disposition of stations. Also, we discuss possible mechanisms to minimize these probabilities.