In addition, the dissemination of messages as an essential and unique feature of VANET has been studied because of its promising benefits, both in security-related and commercial applications. Tseng et al.  took over the Reed Solomon code in the vehicle-to-vehicle incentive system. Similarly, a cooperative information authentication scheme  is being developed to reduce control overload on the RSU side, where legitimate vehicles are responsible for verifying nearby information. In order to simultaneously achieve a high degree of reliability and a low delay in delivery, the Emergency Message Extension Protocol (DEEP) is established . As noted above, emergency warnings can be sent in a timely manner to all vehicles within the operating area, which could significantly improve driving safety. One of the important services offered by VANETs is navigation supported by RSU by Chim et al. in . In the case of real-time road conditions, real-time road conditions are used to calculate a better route for requesting vehicles. Drivers` privacy can be protected by the benefits of anonymous credentials. In , Milojevic and Rakocevic have developed a data aggregation mechanism for real-time observation and effective messaging.
The cost of communication is minimized by the use of intelligent passive clustering and adaptive diffusion. In order to improve the accuracy of the message conveyed, the aggregated information is arranged in real time by updating the spatial time database. Recently, Liu et al. presented a downward link diffusion scheme (CMDS) based on a heterogeneous vanET framework that combines cloud computing [21, 41]. The proof. In accordance with the design of the protocol, the vehicle is transmitted to the vehicle at the same time as the current time stamp and the intermediate value previously acquired. On the side of the vehicle, the spill below is carried out as where the vehicle is already stored. Note that the security of communications is based on the severity of the DLP problem. The final group key is generated and resumed for the next transmission. Vehicular ad hoc networks (VANETs) are distributed, self-organized wireless networks built by vehicles and nearby road units (RSUs). Dynamic real-time communication enables an efficient and sustainable exchange of information between vehicles and RSUs. Therefore, an intelligent transportation system (ITS) is achievable with the implementation of VANETs [1, 2].
A large number of VANET-based applications, which can be categorized primarily into security applications and commercial applications, not only increase driving safety, but also offer a better driving experience. Typical safety applications are warnings for rescue vehicles, traffic jams, information on road accidents and speed control [3, 4]. Commercial applications offer comfort and entertainment services such as weather forecasting, information transmission from nearby gas stations and restaurants, navigation and Internet access. Figure 7 shows the total delay in negotiating group keys, including delay in calculation and delay in communication. In the simulation, we statistically analyzed the average delay of n vehicles cashing in the trading group key. As shown in Figure 7, the number of canal collisions increases with the increase in the number of vehicles, increasing the delay in communication. The efficiency of the communication of our system exceeds the others, because the delay in calculating our system is less than that of others.