Differentially-Private Incentive Mechanism for Crowdsourced Radio Environment Map Construction
Differentially-Private Incentive Mechanism for Crowdsourced Radio Environment Map Construction
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DOI：
10.1109/infocom.2019.8737512
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发表时间：
2019-04
期刊：
影响因子：
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通讯作者：
Yidan Hu;Rui Zhang
中科院分区：
文献类型：
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作者：
Yidan Hu;Rui Zhang
数据库驱动的动态频谱共享（DSS）是一种很有前途的技术范例，其通过允许次用户机会性地接入授权频谱信道而不干扰主用户的传输来提高频谱效率。在数据库驱动的决策支持系统中，地理位置数据库管理员（DBA）以无线电环境地图（REM）的形式维护其服务区域内的频谱可用性，并根据主用户的活动情况批准或拒绝次用户的频谱接入请求。基于众包的频谱感知在提高DBA处的REM的准确性方面具有很大的潜力，但是需要强有力的激励和隐私保护来模拟移动的用户的参与。为了解决这一问题，本文提出了一种新的差分私有反向拍卖机制的众包频谱感知。该机制允许DBA在预算约束下选择频谱感知参与者，同时提供差分投标隐私，近似真实性和近似精度最大化。使用真实的光谱测量数据集的广泛的模拟研究证实了所提出的机制的功效和效率。
Database-driven Dynamic Spectrum Sharing (DSS) is a promising technical paradigm for enhancing spectrum efficiency by allowing secondary user to opportunistically access licenced spectrum channels without interfering with primary users’ transmissions. In database-driven DSS, a geo-location database administrator (DBA) maintains the spectrum availability in its service region in the form of a radio environment map (REM) and grant or deny secondary users’ spectrum access requests based on primary users’ activities. Crowdsourcing-based spectrum sensing has great potential in improving the accuracy of the REM at the DBA but requires strong incentives and privacy protection to simulate mobile users’ participation. To tackle this challenge, this paper introduces a novel differentially-private reverse auction mechanism for crowdsourcing-based spectrum sensing. The proposed mechanism allows the DBA to select spectrum sensing participants under a budget constraint while offering differential bid privacy, approximate truthfulness, and approximate accuracy maximization. Extensive simulation studies using a real spectrum measurement dataset confirm the efficacy and efficiency of the proposed mechanism.