论文标题
MAC地址匿名人群计数
MAC Address Anonymization for Crowd Counting
论文作者
论文摘要
研究表明，计数称为探针请求（PRS）的WiFi数据包隐含地为某个地区人数提供了代理。在本文中，我们讨论了一个涉及WiFi传感器在空中检测PR的人群计数系统，然后使用基于哈希的方法提取并匿名化其媒体访问控制（MAC）地址。本文讨论了一个匿名过程，并显示了传感器和哈希碰撞速率之间的时间同步不准确性，以防止匿名化干扰计数算法。特别是，我们得出具有分析误差界限的均匀分布标识符的碰撞速率的近似值。
Research has shown that counting WiFi packets called probe requests (PRs) implicitly provides a proxy for the number of people in an area. In this paper, we discuss a crowd counting system involving WiFi sensors detecting PRs over the air, then extracting and anonymizing their media access control (MAC) addresses using a hash-based approach. This paper discusses an anonymization procedure and shows time-synchronization inaccuracies among sensors and hashing collision rates to be low enough to prevent anonymization from interfering with counting algorithms. In particular, we derive an approximation of the collision rate of uniformly distributed identifiers, with analytical error bounds.
