Game Theoretic Approach for Enforcing Truth-Telling upon Relay Nodes

Jinglei LI  Qinghai YANG  Kyung Sup KWAK  Fenglin FU  

IEICE TRANSACTIONS on Communications   Vol.E94-B    No.5    pp.1483-1486
Publication Date: 2011/05/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.1483
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
game theory,  relay selection,  CSI,  truth telling,  

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In this letter, an AGV based relay selection mechanism is developed to ensure relays reporting true information in wireless relay networks. The source selects relays based on the channel state information (CSI) of relay-destination links. Selfish relays may report fake CSI in order to obtain a better chance of being selected, whereas the source is not able to tell the reported in real or in false. In the proposed scheme, a relay node receives some payoffs from the destination with respect to the achievable data rate and also some compensations from the others in terms of the reported CSI of all relays. This mechanism not only enforces truth-telling upon relay nodes with maximum payoff but also ensures fairness among them. The equilibrium of payoff is attained when relay nodes report their true CSI. Simulation results demonstrate the theoretical solutions.