Internet-of-Vehicles position privacy protection method and system in road network environment

Abstract

The invention discloses an Internet-of-Vehicles position privacy protection method and system in a road network environment. The method comprises the following steps: calculating the weight of each road section based on the number of vehicles on each road section in a Voiconoi area. According to the road segment weight sorting, other adjacent related vehicle segments are selected and added into the anonymity set, road segment homogenization forming a road network model can be reduced by increasing road segments with multiple weights, a road network environment closer to the real situation is formed, on the basis, the anonymity area is determined and calculated, and the anonymous area is adopted to replace the real position of the target vehicle, so that an attacker is difficult to obtain the accurate position of a vehicle user, feature attacks and speculative attacks are effectively avoided, the risk of Internet of Vehicles position privacy leakage is reduced, and adjacent related vehicle road sections with similar or same weights are added into an anonymous set in the process; and the search range of roads and vehicles is reduced, and the time overhead of anonymous calculation isreduced.

Description

technical field [0001] The invention relates to the field of location privacy protection, in particular to a method and system for protecting location privacy of the Internet of Vehicles in a road network environment. Background technique [0002] Today, the Internet of Things is developing rapidly, and communication technology is rapidly improving. The arrival of 5G cellular networks will accelerate the development of the Internet of Things. The computing power of mobile devices is increasing rapidly. These mobile devices can also be piggybacked on many devices. Location Based Service (Location Based Service, LBS) is an essential part of people in modern society. For example, check nearby hotels and schools, how to find the nearest bus stop, etc. The Internet of Vehicles (IoV) is an emerging product, developed from the Internet of Things, that is, vehicle ad hoc networks (VANETs). Usually the physical layer / MAC layer chooses the 802.11p protocol, and the networking tech...

AI Technical Summary

Problems solved by technology

[0006] Based on this, it is necessary to provide a location privacy protection method and system for the Internet of Vehicles in the road network environment to solve the contradiction between the variability of the anonymity set, the strength of location privacy protection, and the quality of service in the existing location privacy protection methods for the Internet of Vehicles. The problem of balance can effectively reduce the risk of privacy leakage and reduce the cost of anonymous computing time

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