GCTAR: A stout approach for increasing efficiency and fairness for City Environment in VANET

Vehicular ad hoc networks (VANETs) allow vehicles to form a self-organized network without the need for permanent infrastructure. As a prerequisite to communication, an efficient route between network nodes must be established, and it must adapt to the rapidly changing topology of vehicles in motion. Improving efficiency and fairness for City Environment becomes a hot topic own to its increasing challenge about unique features, such as limited transporting distance, high mobility, and poor link quality. As a result, providing greater efficiency in city environment has a great role in Intelligent Transportation System (ITS). Since there are more obstacles in city environment, most of the existing protocol fails to provide greater efficiency. The main goal of this paper is to propose a new ad hoc routing protocol (GCTAR), which has improved performance in highly mobile environment of VANETs (city infrastructure). This GCTAR inherits the characters of geographic routing and also contains additional features such as maintain a cache of successful routes between various source and destination.