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Coronavirus Contact Tracing using Bluetooth Low Energy and Smartphones

使用低功耗蓝牙和智能手机追踪冠状病毒接触者

基本信息

批准号：
552130-2020
负责人：
Spachos, Petros
金额：
$ 3.64万
依托单位：
University of Guelph
依托单位国家：
加拿大
项目类别：
Alliance Grants
财政年份：
2020
资助国家：
加拿大
起止时间：
2020-01-01 至 2021-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=703529
关键词：
Coronavirus Contact Tracing using Bluetooth

项目摘要

Contact tracing is of critical importance in preventing the further spread of infectious disease. Usually, such a task is performed manually through a few authorized personnel. However, it takes time for the information to reach the people who are very likely to be in close contact with the infected patient. Motivated by the urgent need for an effective contact tracing method, in this project we will develop a novel Smart Contact Tracing (SCT) system by exploiting the Bluetooth Low Energy (BLE) signals on the smartphone. Through a smartphone application, the system will classify the immediate contacts into high risk and low risk, according to their proximity from a person and the duration of the interaction. Additionally, the introduced SCT will use the proximity information to trigger a real-time alert when the recommended physical distancing is violated. The proposed contact tracing method is securely designed to prevent possible information leaks. We leverage the beaconing feature of BLE to broadcast an encrypted packet when the user is in the public space. Since the beaconing packet is transmitted through non-connectable advertising channels, no nearby devices can access the smartphone intentionally. Furthermore, the packet is encrypted with a piece of signature information that is unique and impossible to be duplicated by any device on other occasions.

接触者追踪对于防止传染病的进一步传播至关重要。通常，此类任务是由少数授权人员手动执行的。然而，信息到达极有可能与感染患者密切接触的人手中还需要时间。由于迫切需要一种有效的接触者追踪方法，在这个项目中，我们将利用智能手机上的低功耗蓝牙 (BLE) 信号开发一种新型智能接触者追踪 (SCT) 系统。通过智能手机应用程序，系统将根据与人的距离和互动的持续时间，将直接接触者分为高风险和低风险。此外，引入的 SCT 将在违反建议的物理距离时使用邻近信息触发实时警报。所提出的接触者追踪方法经过安全设计，可以防止可能的信息泄露。当用户位于公共空间时，我们利用 BLE 的信标功能来广播加密数据包。由于信标数据包是通过不可连接的广告渠道传输的，因此附近的设备无法有意访问智能手机。此外，数据包还使用一条签名信息进行加密，该签名信息是唯一的，任何设备在其他情况下都无法复制。