The invention discloses a real-time road condition detection method based on local differential privacy, and belongs to the technical field of information safety. The detection method comprises threeparts of disturbing vehicle position data, counting and correcting disturbing data by a server, and constructing a real-time road condition network. By optimizing the unary coding algorithm, epsilon local differential privacy protection is carried out on the real position data of the vehicle, that is, the vehicle position data is disturbed, so that the server cannot know the real position of the vehicle, but still can construct a real-time road condition graph, and accurate real-time road conditions are provided for the outside. By utilizing the real-time road condition detection method, not only is the privacy of a data provider protected, but also the accurate real-time road condition is provided for a road condition querier, and the travel planning of people is facilitated.

    本发明公开了一种基于本地差分隐私的实时路况检测方法,属于信息安全技术领域。该检测方法包括对车辆位置数据的扰动、服务器统计并校正扰动数据、构造实时路况网络三个部分。本发明通过优化一元编码算法,对车辆的真实位置数据进行了ε‑本地差分隐私保护,即对车辆位置数据进行扰动,使得服务器无法得知该车辆的真实位置,但依旧能构建出实时路况图,对外提供准确的实时路况。利用该实时路况检测方法,不仅保护了提供数据者的隐私,也对路况查询者提供了精准的实时路况,方便了人们的出行规划。


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    Title :

    Real-time road condition detection method based on local differential privacy


    Additional title:

    一种基于本地差分隐私的实时路况检测方法


    Contributors:
    XIA ZHIHUA (author) / SHEN ZIXUAN (author) / YU PEIPENG (author)

    Publication date :

    2020-11-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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