Interference-Aware Bandwidth Reservation in multi-radio multi-channel mesh networks

Authors:
Usman Ashraf;Slim Abdellatif;Guy Juanole
Affiliations:
Department of Computer Science and Engineering, Air University, Islamabad, Pakistan;CNRS, LAAS, 7 Avenue du Colonel Roche, F-31400 Toulouse, France and Université de Toulouse, INSA, LAAS, F-31400 Toulouse, France;CNRS, LAAS, 7 Avenue du Colonel Roche, F-31400 Toulouse, France and Université de Toulouse, UPS, LAAS, F-31400 Toulouse, France
Venue:
Computer Communications
Year:
2012

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Abstract

In this paper, we propose the Interference-Aware Bandwidth Reservation (IABR) scheme for providing flow admission control and bandwidth reservation for end-to-end flows in 802.11 multi-radio multi-channel wireless mesh networks. The effects of inter-flow and intra-flow interference have often been neglected in existing solutions, which can lead to inaccurate bandwidth estimation and reservation. IABR models both the current inter-flow interference from existing flows and the expected intra-flow interference of the incoming flow to make accurate estimation of the available bandwidth and perform admission control. Moreover, IABR exploits wireless link diversity between neighboring nodes in multi-radio multi-channel mesh networks to improve flow admission ratio and ensure efficient load-balancing. Simulation results show that IABR provides accurate bandwidth estimation, excellent load distribution and high flow admission ratio.