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Patent

Method and system for improving misfit rate of vehicle accident

TLDR
In this paper, a rate-of-error improving method of a vehicle accident in a rate improving device and a rate of error improving device is described. But the method is not applicable to the case of road situation data.
Abstract
Disclosed are a rate of error improving method of a vehicle accident in a rate of error improving device and a rate of error improving device. According to one embodiment of the present invention, the rate of error improving method of a vehicle accident comprises the steps of: receiving an accident message and a beacon message from an adjacent vehicle located adjacent to the accident vehicle; checking the number of hops in the accident message; using the accident message and the beacon message to analyze generated road situation data, when the number of hops is confirmed as 2 hops, and determining an accident opinion; and renewing the accident message with the determined accident opinion, and then transmitting the accident message to surrounding vehicles.

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Patent

VANET Cloud-Assisted Conditional Privacy Preserving Authentication Method for VANET and System Therefor

TL;DR: In this article, a cloud-assisted conditional privacy preserving authentication method is proposed, which comprises a vehicle registration step of receiving a certificate signing request message including a vehicle ID and a public key of a vehicle from a vehicle and providing a signed certificate to the vehicle after signing a certificate generated based on the received information with a private key of the certificate authority.
Patent

Protocol management system for aggregating massages based on certification

TL;DR: In this paper, a protocol management system for aggregating messages based on certification is proposed, which is based on a combination of encrypting and grouping and satisfies the security of a VANET and privacy requirements, even though the actual ID of a vehicle transmitting a traffic information message cannot be identified.
Proceedings ArticleDOI

Attack Analysis in Vehicular Ad Hoc Networks

Omer Mintemur, +1 more
TL;DR: This work analyzes four different types of attacks against two popular routing protocols (AODV, GPSR) in VANETs and shows how attacks could severely affect the communication and, the need of security solutions for such highly dynamic networks.
Patent

Message propagation scheme of vehicle-to-vehicle by using a density

TL;DR: In this paper, a message propagation scheme by using density according to an embodiment of the present invention measures enables a user to easily detect a Sybil attack of illegally using IDs by counting the number of the vehicles existing on the road to measure the density (d) of vehicles and broadcasting traffic information (TI) by message propagation types (MPT=0, MPT=1, and MTP=2).