Energy efficient grid splitting relay node selection in vanets

Abstract

INTRODUCTIONVANETs are vehicular ad hoc networks are specifically used to guarantee the road safety by facilitating the communication among road side units such as cars, scooters and vehicles, etc. This communication can be done only within a specific range such as 100 m to 300m. Due to its features the VANETs has become an important part of the Intelligent Transport system [2]. Since VANET is developed for human safetyand comfort, it has several applications. The safety applications include collision warning, collecting traffic information, blind crossing prevention, work zone warning, weather information, etc. Its comfort applications comprise parking lot payment, internet service such as sending emails, downloading files, etc. The main purpose of both the applications is toprovide accurate information to the driver and the users of the car. This life critical information should beprecise and securely transmitted from the source to the destination [4].For transmitting the data between small ranges of communication in order to obtain the inter-vehicular communication (IVC), the vehicles are required to be installed with the communication devices. Moreover, the surplus of newly developed services that includes vehicle positioned near to each other, like navigation security, games that can be played online, and exchange of information [1]. The scenario of traffic on the road is shown through the gateways or internet gateways that can be determined at irregular time periods along with the path that can give large bandwidth connection for a short range. Due to rapid motion, the cars are in the range of each internet gateway for a short duration of time.