Authors: Swati Sharma; Sandeep Harit
Addresses: Department of Computer Science and Engineering, Punjab Engineering College, Chandigarh, India ' Department of Computer Science and Engineering, Punjab Engineering College, Chandigarh, India
Abstract: Vehicular networks form a growing field of wireless technology that pays attention to a wide range of applications, from infotainment to safety applications. One of the most vital challenges faced by vehicular ad hoc network (VANET) is to choose an appropriate propagation model providing accurate and realistic propagation details. In VANET, the realistic propagation model requires mobility, detail of vehicles, network topology, and information of message dissemination. Although all the vehicles are sharing the same limited bandwidth, an increase in vehicle density results in congestion in the network, leading to packet loss and delay in the delivery of messages. Therefore, it is necessary to control the congestion for the high performance of the vehicular network. This paper illustrates various propagation mechanisms and effects on wireless propagation. Further, the classification of different propagation models is discussed, along with their mathematical expressions. Finally, we provide an overview and taxonomy of several VANET-specific propagation models with their impact on the decentralised congestion control (DCC) algorithm through simulation. This paper's objective is to classify the propagation models and provide researchers with the guidelines to understand the effect of propagation models on the DCC algorithm.
Keywords: vehicular ad hoc network; VANET; propagation model; congestion control; MAC layer.
International Journal of Ad Hoc and Ubiquitous Computing, 2021 Vol.36 No.3, pp.141 - 154
Received: 04 Mar 2020
Accepted: 28 Sep 2020
Published online: 12 Mar 2021 *