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Location privacy protection method and system based on co-location information

A technology of co-location and privacy protection, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the impact of relationship strength without considering the impact of relationship strength, high privacy protection requirements, and unmet privacy requirements and other issues to achieve the effect of different privacy protection requirements

Active Publication Date: 2020-05-22
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] At present, for the research on the privacy protection method of location privacy based on the relationship strength, the calculation method of the relationship strength includes calculating the relationship strength value through the community recommendation score and the interaction between the user and the friend, but it does not take into account the interaction between the friend and the user. Impact on relationship strength or not correctly reflecting the impact of friend-user interactions on relationship strength
At the same time, existing location privacy protection methods, such as location privacy protection based on K anonymity, location privacy protection based on fake location, and location privacy protection based on attribute encryption, etc., take into account co-location information, due to the different privacy of different users Protection needs, when two users with different privacy protection needs send the same piece of location information, for their mutual friends, the privacy needs of users with high privacy protection needs will not be met

Method used

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  • Location privacy protection method and system based on co-location information
  • Location privacy protection method and system based on co-location information
  • Location privacy protection method and system based on co-location information

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with specific examples.

[0050] Such as figure 1 As shown, the location privacy protection method based on co-location information provided in this embodiment includes the following steps:

[0051] 1) Obtain the relationship strength between the user and the friend based on the historical interaction data;

[0052] 2) Save the relationship strength between the user and the friend to the database and update it regularly;

[0053] 3) The user sends a piece of shared content with geographic location information to the server;

[0054] 4) Extracting friend information (that is, co-location information) and user location information in the shared content;

[0055] 5) Location privacy protection based on relationship strength and co-location information;

[0056] 6) Save the location privacy protection results and send them to friends.

[0057] Such as figure 2 As shown, the present invention can be ...

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Abstract

The invention discloses a location privacy protection method and system based on co-location information, comprising the steps of: 1) obtaining the relationship strength between a user and a friend according to historical interaction data; 2) saving the relationship strength value between the user and a friend in a database and periodically Update; 3) The user sends a shared content with geographic location information to the server; 4) Extracts friend information (that is, co-location information) and geographic location information in the shared content; 5) Performs location privacy based on relationship strength and co-location information 6) Send the result of location privacy protection to friends. The present invention simultaneously considers the influence of user-friend interaction and friend-user interaction on user-friend relationship strength, and the decrease in friend-user interaction frequency will reduce the user-friend relationship strength.

Description

technical field [0001] The present invention relates to the technical field of location privacy protection, in particular to a location privacy protection method and system based on co-location information. Background technique [0002] With the popularization of mobile social networks, people are accustomed to sharing their location information in mobile social networks such as their circle of friends and Qzone. Different location privacy protection requirements. [0003] Moments and Qzone provide us with coarse-grained privacy protection methods, allowing users to set invisible groups for messages. Foreign applications such as Google Latitude allow users to blur the location information sent to the provincial and municipal level. [0004] At present, for the research on the privacy protection method of location privacy based on the relationship strength, the calculation method of the relationship strength includes calculating the relationship strength value through the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/58H04L29/08H04L29/06
CPCH04L63/0407H04L63/10H04L51/52H04L67/52
Inventor 李家春曹建洲
Owner SOUTH CHINA UNIV OF TECH
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