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A novel channel assignment method using Tabu Search based on graph theory in Wireless Sensor Networks

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4 Author(s)
Tao Zheng ; Nat. Eng. Lab. for Next Generation Internet Interconnection Devices, Beijing Jiaotong Univ., Beijing, China ; Yajuan Qin ; Deyun Gao ; Hongke Zhang

Wireless sensor networks are suffering from serious frequency interferences. In this paper, we propose a channel assignment algorithm based on graph theory in wireless sensor networks. The channel assignment problem is equivalent to the generalized graph-coloring problem; we first model the conflict graph for channel assignment with the goal of global optimization minimizing the total interferences to wireless sensor network. We further present a metaheuristic Wireless Sensor Networks Tabu Search (WSN-TS) algorithm to address the NP-completeness of the channel assignment problem. To judge the quality of the effect obtained from WSN-TS, we utilize the interference temperature as the termination criterion on the numbers of iteration needed for a solution in optimizing global network. Results from a simulation experiment reveal that the novel algorithm can effectively solve the channel assignment problem.

Published in:

Broadband Network and Multimedia Technology (IC-BNMT), 2010 3rd IEEE International Conference on

Date of Conference:

26-28 Oct. 2010

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