Emergency Message Transmission in Vehicular Ad-Hoc Networks and its Performance Analysis using AODV, OLSR and VGEO Protocols
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Abstract
Due to the ability to change people's lifestyle, communication systems are of great importance in the development of societies. Thanks to the variability of applications, today, communications are necessary for the evolution of relationships between individuals, groups and institutions in a society. Communication systems between vehicles are not ruled out in the connection process. One of the main applications that arouses interest in the industry is the study and development of vehicular communication networks Vehicular Ad-Hoc Networks (VANET). These networks enable vehicles to act as communication devices to provide information with the aim of offering comfort and safety to all users of the network. The transfer of emergency messages in a VANET is of great importance when providing medical assistance in a situation where a catastrophe has occurred. However, the sending of information in these networks presents a real technological challenge due to the dynamism they present, which has led to the implementation of different protocols for the containment of the different problems and inconveniences that they show. This final degree project aims to study the definition of VANETs, as well as their characteristics, categorization and description of protocols commonly used by them. An investigation is carried out through a simulation of the network behaviour, to finally observe and analyse the performance of the Ad hoc On-Demand Distance Vector (AODV), Optimized Link State Routing Protocol (OLSR) and Vehicle Geographic Routing Protocol (VGEO) protocols in the transmission of emergency message packets over a VANET network. For the analysis of the research, the free software NS-3 and SUMO were used. Through SUMO, a vehicular mobility environment was set up on an area that emulates a layout of streets and intersections through the obtaining of tcl files. Through this software, the simulation and network parameters are built for the evaluation of the efficiency and scalability of each protocol.
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