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A Cooperative Communication Scheme Based on Dynamic Coalition Formation Game in Clustered Wireless Sensor Networks

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2 Author(s)
Dan Wu ; Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China ; Yueming Cai

In this paper, we focus on the problem of how to strike a balance between the QoS provisioning and the energy consumption when a cooperative communication scheme is applied in a clustered wireless sensor network. We characterize this tradeoff by a multi-variable optimization problem, with the goals of jointly maximizing the outage performance and the network lifetime. Then, we horizontally decompose the problem into the concatenation of two subproblems: (i) the long-haul transmit power per sensor node, and (ii) the set of assisting cluster nodes (CNs). For the former one, the optimal long-haul transmit power solution is presented based on the Lambert W function, only with the knowledge of statistic channel state information. Moreover, a dynamic coalition formation game theoretical framework is modeled to solve the latter one. A corresponding algorithm is proposed by using a dynamic coalition formation process based on the best-reply process with trial opportunity. Through this algorithm, a stable coalition structure with a core allocation can be obtained, which can show the optimal set of assisting CNs. Extensive simulation results are provided to demonstrate the effectiveness of our proposed scheme.

Published in:

Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE

Date of Conference:

5-9 Dec. 2011