Truthful Mechanisms for Secure Communication in Wireless Cooperative System
Jun Deng, Rongqing Zhang, Lingyang Song, Zhu Han, and Bingli Jiao

TL;DR
This paper introduces truthful auction mechanisms based on VCG and AGV to incentivize relays in wireless networks to report true channel information, thereby enhancing physical layer security and optimizing secrecy rates.
Contribution
It proposes novel VCG and AGV mechanisms tailored for relay networks to ensure truthful reporting and improve security performance.
Findings
AGV mechanism achieves incentive compatibility, individual rationality, and budget balance.
Simulation results confirm the efficiency and fairness of the proposed mechanisms.
Optimal relay selection enhances the network's secrecy rate.
Abstract
To ensure security in data transmission is one of the most important issues for wireless relay networks, and physical layer security is an attractive alternative solution to address this issue. In this paper, we consider a cooperative network, consisting of one source node, one destination node, one eavesdropper node, and a number of relay nodes. Specifically, the source may select several relays to help forward the signal to the corresponding destination to achieve the best security performance. However, the relays may have the incentive not to report their true private channel information in order to get more chances to be selected and gain more payoff from the source. We propose a Vickey-Clark-Grove (VCG) based mechanism and an Arrow-d'Aspremont-Gerard-Varet (AGV) based mechanism into the investigated relay network to solve this cheating problem. In these two different mechanisms, we…
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