NDLI: Link-weighted and distance-constrained channel assignment in single-radio wireless mesh networks

Content Provider	IEEE Xplore Digital Library
Author	Junfeng Jin Baohua Zhao Hao Zhou
Copyright Year	2009
Description	Author affiliation: School of Computer Science, University of Science and Technology of China, Hefei, Anhui, 230027, China (Junfeng Jin; Baohua Zhao; Hao Zhou)
Abstract	In this work, we study a link-weighted and distance-constrained channel assignment problem in multi-channel mesh networks with stationary router nodes, such as community wireless networks. A good channel assignment is given as the one which can minimize interference of each link from its neighboring links and subsequently improve the network throughput. In response to it, we introduce an interference metric, namely, Min-Max I-value of an edge (MMIE), to explicitly accounts for interference among links that are at distance one. In addition, we further show that the link-weighted and distance-constrained channel assignment problem with respect to the interference metric is NP-hard in computation. This guides us to propose a new heuristic channel assignment algorithm called LD-CA algorithm. We study the performance of our algorithm by implementing it in a wireless simulation environment consisting of 25 nodes, each equipped with one 802.11 wireless card. The ns-2 simulation results show that in a multi-channel environment, the LD-CA algorithm significantly outperforms previously proposed channel assignment schemes by minimizing MMIE of all links.
Starting Page	786
Ending Page	791
File Size	274662
Page Count	6
File Format	PDF
ISBN	9781424444885
ISSN	07421303
DOI	10.1109/LCN.2009.5355034
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-20
Publisher Place	Switzerland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless mesh networks Interference Mesh networks Throughput Spread spectrum communication Laboratories Computational modeling Switches Conferences Computer network management wireless mesh networks Channel assignment minimal interference multi channel
Content Type	Text
Resource Type	Article

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