Location privacy protection method based on differential privacy in vehicular ad hoc network
A vehicle ad hoc network and privacy protection technology, which is applied in the direction of location information-based services, specific environment-based services, communication between vehicles and infrastructure, etc., can solve the problems of location privacy leakage, privacy protection user threats, etc. Achieve the effect of high location privacy and security
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[0036] Such as figure 1 As shown, assume that there is a roadside unit RSU in a certain road section, which is connected to the remote server by cable, and there are 4 vehicles on the road section covered by the RSU wirelessly. Assume that the IDs issued by the authority (TA) to them are 1, 2, and 3 respectively. ,4. After the vehicles enter the RSU wireless coverage area, their IDs are sent to the RSU through the wireless connection. And assume the intersection R of the RSU coverage and the two ends of the path 1 = 0, R 2 =12.
[0037] When a vehicle enters the RSU area, it needs to request the service of the location server and send its own location information s 3 to RSU, assume s 3 The value on the one-dimensional coordinate is 6, and the RSU requests vehicle location information from all other vehicles in the area, and the vehicle obtains the current location information s according to the vehicle positioning system 1 ,s 2 ,s 4 , assuming s 1 =1,s 2 =4,s 4 =10,...
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