Self-Organized Cognitive Sensor Networks: Distributed Channel Assignment for Pervasive Sensing

Li-Chuan Tseng, Feng-Tsun Chien, Abdelwaheb Marzouki, Ronald Y. Chang, Wei-Ho Chung and ChingYao Huang

International Journal of Distributed Sensor Networks, 2014, vol. 10, issue 3, 183090

Abstract: We study the channel assignment strategy in multichannel wireless sensor networks (WSNs) where macrocells and sensor nodes are overlaid. The WSNs dynamically access the licensed spectrum owned by the macrocells to provide pervasive sensing services. We formulate the channel assignment problem as a potential game which has at least one pure strategy Nash equilibrium (NE). To achieve the NE, we propose a stochastic learning-based algorithm which does not require the information of other players’ actions and the time-varying channel. Cluster heads as players in the game act as self-organized learning automata and adjust assignment strategies based on their own action-reward history. The convergence property of the proposed algorithm toward pure strategy NE points is shown theoretically and verified numerically. Simulation results demonstrate that the learning algorithm yields a 26% sensor node capacity improvement as compared to the random selection, and incurs less than 10% capacity loss compared to the exhaustive search.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:sae:intdis:v:10:y:2014:i:3:p:183090

DOI: 10.1155/2014/183090

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