Abstract
Crowdsourced spectrum sensing (CSS) has been regarded as an excellent technique to increase spectrum utilization and enhance spectrum service. To improve the participation of mobile users, some auction-based mechanisms have been proposed for crowdsourced spectrum sensing system. However, both multi-bid crowdsourced spectrum sensing and the bid privacy of participants in it have never been taken into consideration in those mechanisms. In this paper, we propose BPriCSS, the first mechanism to protect the bid privacy in spectrum-sensing participants selecting process in multi-bid CSS system. Moreover, considering different aims of the administrator, BPriCSS-MSC and BPriCSS-MAE are presented for minimizing the social cost and maximizing the average cost efficiency of winners, respectively. We prove that both BPriCSS-MSC and BPriCSS-MAE can simultaneously achieve differential bid privacy and truthfulness by theoretical analysis and simulation.
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