The expeditious development in cloud-enabled industrial Internet of Things (IIoT) healthcare has significantly reduced the costs to monitor and protect people at home while notably improving the quality of human healthcare. Despite its considerable convenience and benefits, it confronts some security and privacy challenges in the aspects of bilateral fine-grained access control, the authenticity and tamper resistance of shared health data. To tackle these constraints, a secure privacy-preserving bilateral access control scheme with fine granularity (PBAC-FG) is proposed in this article. Our PBAC-FG exploits fine-grained access control and matchmaking encryption technologies to ensure both participants (e.g., patients and healthcare providers) can specify their respective fine-grained access control over the encrypted health data, such that only authorized counterparts can efficiently access the health data. Besides, the correct rigorous security proofs are indicated to verify that our PBAC-FG is indeed secure. We carry out comprehensive performance evaluations and comparisons to demonstrate the efficiency and practicality of the PBAC-FG for IIoT healthcare applications.

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采用 28-nm CMOS 的宽带 62-mW 60-GHz FMCW 雷达

本文介绍了一种采用 28 纳米 CMOS 的超低功耗 60 GHz 室内调频连续波 (FMCW) 雷达。雷达前端采用可调谐匹配网络 (TMN)，可跟踪线性调频并支持 17% 的部分带宽，覆盖未授权的 60 GHz 频段 (57–66 GHz)。发射器 (TX) 中的频率六倍频器链 (x6) 可提供 8.1 dBm 的输出功率，同时实现 >20% 的 DC-RF 效率。混频器优先接收器 (RX) 前端后跟源退化高通 (HP) 滤波器可抑制 TX 到 RX 泄漏（溢出）并引起最小溢出到目标互调。RX 在 60 GHz 下的噪声系数 (NF) 为 10.5-dB，功耗仅为 5.6-mW，使其适用于 MIMO 阵列。带有DSP平台的雷达IC充分展示了其在室内传感场景中的能力。 $\mu \text{s}$ 雷达启动时间在连续模式/6.25% 占空比模式下消耗 62 mW/18 mW，与该频率范围内最先进的雷达相比，这是创纪录的低直流功率。