Model for Real-Time Communication between Vehicles in VANET

Abstract

For VANETs to achieve its overarching purpose (providing a secure and stable environment for its users), It is essential that urgent communications be sent without delay or interruption. Congestion management systems, however, do not prioritise urgent communications over less urgent ones. In real-time safety applications, this is a much bigger problem. In VANETs, safety messages are often transmitted across a wide area and to many recipients by virtue of their great transmission range (power). When there are several nodes vying for the same transmission channel, however, the likelihood of collision rises when the transmission range is great. In addition to the information being sent each second, the pace at which it is sent has a major bearing on how quickly the channel becomes saturated. The efficiency of VANET applications improves as the speed at which data can be sent increases. On the other hand, raising the transmission rate might often cause the channel to become saturated. Signaling their location, speed, and heading at regular intervals, vehicles send out beacon signals for the sake of safety. The control channel serves as the communication medium for these types of communications. A high beaconing rate in a densely populated area might cause the control channel to become overloaded and congested. When the beaconing rate is reduced, however, problems arise when the beacon message and updated information are not received in time to keep safety applications running well.