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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.

追踪接触者对防止传染病的进一步传播至关重要。通常，这样的任务是通过几个授权人员手动执行的。然而，信息到达极有可能与受感染患者密切接触的人需要时间。由于迫切需要有效的接触追踪方法，在本项目中，我们将开发一种新的智能接触追踪（SCT）系统，通过利用智能手机上的蓝牙低功耗（BLE）信号。通过智能手机应用程序，该系统将根据他们与人的接近程度和互动的持续时间，将直接接触者分为高风险和低风险。此外，当违反推荐的物理距离时，引入的SCT将使用接近度信息来触发实时警报。建议的联系人追踪方法是安全设计的，以防止可能的信息泄漏。我们利用BLE的信标功能，在用户处于公共空间时广播加密数据包。由于信标数据包是通过不可连接的广告信道传输的，因此附近的设备无法有意访问智能手机。此外，数据包是用一条签名信息加密的，该签名信息是唯一的，并且在其他情况下不可能被任何设备复制。