Method for protecting user position privacy in mobile peer-to-peer network
A technology for mobile users and privacy protection, applied in location information-based services, security devices, electrical components, etc., can solve the problems of long waiting time, low success rate of anonymous protected areas, etc., and achieve the effect of accelerating the transmission speed
Active Publication Date: 2012-07-18
ZHEJIANG UNIV
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Problems solved by technology
However, both modes have a long waiting time for collecting information of k-1 other users, and their success rate of generating an anonymous protection area is low
These shortcomings are particularly prominent when the user's privacy protection requirements are high.
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[0033] In order to fully understand the purpose, features and advantages of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific examples, so that the purpose and effect of the present invention will become more obvious.
[0034] The steps of the method for protecting user location privacy in a mobile peer-to-peer network are as follows:
[0035] 1) The mobile user actively sends the location record r of the mobile user to the surrounding neighbors at intervals t, and the setting record r includes parameters uid, x, y, hop and initialTime, where uid is the unique identifier of the mobile user, x and y represents the current location of the mobile user respectively, hop is the number of hops away from the mobile user in the wireless network, which is set to 1, and initialTime is the generation time of the location record, which is set to the current system time;
[0036] 2) The mobile user forw...
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The invention discloses a method for protecting user position privacy in a mobile peer-to-peer network. The method comprises the following steps: A. actively sending a position record r, namely, (uid, x, y, hop, initial Time) to neighbors at t intervals by a mobile user; B. forwarding position records of other users maintained in a position database of the user to neighbors simultaneously; C. selecting to save the position record, update an existing position record or ignore the position record according to practical situations by mobile users receiving the message; D. maintaining all position records periodically and deleting expired position records by all mobile users; E. figuring out anonymity protection areas on the basis of maintained position information databases and sending anonymity service requests when users initiate position-based service requests. According to the method, mobile users can protect position privacy without the participation of a trusted third party. Compared with existing methods, the method reduces the waiting time for generating the anonymity areas and improves the success rate of anonymity areas.
Description
technical field [0001] The invention relates to the field of location-based services, in particular to a method for protecting user location privacy in a mobile point-to-point network. Background technique [0002] With the popularity of location-aware devices, such as GPS navigation devices, smart phones, and devices equipped with RFID chips, location-based services (Location Based Service, LBS) have received more and more attention in recent years and have more and more applications. It has been widely used by people, such as traffic navigation, food and entertainment convenience query, targeted advertising, and public emergency services. At the same time, positioning technologies such as base station positioning, GPS positioning, and Wi-Fi have also made great progress, which greatly improves the accuracy of user positioning. [0003] Due to the increasing awareness of personal privacy protection, while enjoying the convenience brought by location-based services, users a...
Claims
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Login to View More IPC IPC(8): H04W4/02H04W12/00H04L29/08
Inventor 车延辙杨强何钦铭
Owner ZHEJIANG UNIV