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Interference-Aware Multi-Channel Assignment in Multi-Radio Wireless Mesh Networks

Seongho CHO, Chong-kwon KIM

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Summary :

Wireless Mesh Network (WMN) is a promising model with benefits in coverage extension and throughput improvement. In WMN, multiple channels are available for improving system performance through concurrent transmission. For maximum utilization, per-node channel quality and inter-channel interference should be considered in multi-channel assignment. We propose a new multi-channel assignment method. First, we model the mesh network connectivity after a multi-graph which has multiple edges between two nodes. From this connectivity graph, we generate a multi-channel conflict graph, then we allocate multiple channels so that they do not overlap, using list coloring algorithm. We also propose a new sub-graph list coloring algorithm to enhance channel allocation performance. From computer simulations, we verify the performance of the algorithm.

Publication
IEICE TRANSACTIONS on Communications Vol.E91-B No.5 pp.1436-1445
Publication Date
2008/05/01
Publicized
Online ISSN
1745-1345
DOI
10.1093/ietcom/e91-b.5.1436
Type of Manuscript
PAPER
Category
Network

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