Multicasting Node Selection Technique for path establishment in VANETs

Tarnjeet Kaur
2017 International Journal for Research in Applied Science and Engineering Technology  
The vehicular adhoc network is the decentralized in nature. The efficient routing technique is required for such network to establish path from source to destination. The location addict routing is the broadcasting routing protocol which gather network information for path establishment from source to destination. In this paper, multicasting technique has been proposed which select multicasting nodes on the basis of distance and stability. The simulation of the proposed algorithm is performed
more » ... NS2 and it has been analyzed that proposed algorithm performs well in terms of various parameters Keywords: LAR, Reactive routing, Multicasting I. INTRODUCTION The vehicles are present in the networks which form the nodes of the network in the vehicular ad hoc networks. This type of network is known as the vehicular ad hoc network. The communication which is done in between the vehicles is carried on for the purpose of safety of the driver as well as his comfort. The sub-class of the mobile ad hoc networks is the vehicular ad hoc networks which differentiate the approach which hold the transport system. Each vehicle has to have this important facility. This type of network provides vehicle to roadside wireless communications across the network. This type of network is an autonomous network which also includes self-organizing the wireless communication of the network [1]. The nodes in the VANETs consider themselves as servers or clients which exchange the data across the network. The information is shared to and from the nodes which is substantially important. There are three broader categories of the VANETs [2]. These are pure cellular, pure ad hoc and hybrid. Following are the applications of VANETs: Safety applications: For the purpose of decreasing the road accidents the safety applications are used. Due to the applications of such technology, the loss of lives of people using the vehicles is done. Due to the collisions of vehicles there have been many accidents occurring across network. For the purpose of avoiding collision the class of application provides active road safety which guides the drivers with important information at exact times. Car speed warning: Protocols are used for the purpose of providing a combined GPS and digital maps facility to the users which will decrease the treat level for a driver which is arriving at speed. Traffic signal violation warning: if there is any driver which causes a threat of running over the traffic signal, there will be a warning imposed to the user. A message will be sent once the decision is made by keeping in consideration the traffic signal status, the position of the vehicle and its approaching speed [4] . Collision risk warning: The possibilities of collision are detected by the vehicles and the RSU amongst various numbers of vehicles which are unable to communicate with each other. The information about the vehicles that are approaching toward the opposite direction as well as the ones reaching the destination. Lane change warning: Within a roadway lane the positioning of the vehicle is checked and monitored. If at any instance it is not safe to change the lanes, the driver is notified regarding that. The routing is the major issue in the vehicular adhoc networks due to self-configuring nature of the network [5] . The routing protocols are AODV,DSR and DSDV A. DSR (Dynamic Source Routing) On the basic idea of source routing, the on-demand routing protocol known as DSR is formed. The route caches of the network are maintained by the mobile nodes. They contain the source routes which are well known by the mobile. When the new routes are learned in the network, there is a proper updating of the route cache regarding those paths. There are two phases in the network which are route discovery and the route maintenance. The node first consults the route cache before sending the nodes to destination. This is done to make sure that there is already no path assigned to the data. If not done so, the path now assigned will be
doi:10.22214/ijraset.2017.8160 fatcat:quqahlvn5fawpmgrb3yrctxkze