After 1G, 2G, 3G, and 4G technologies, 5G is a modern wireless system. 5G provides for the development of a modern form of network which connects virtually everyone and everything including computers, items, vehicles, and smartphones. VANETs marked as a critical infrastructure which can offer a wide range of facilities, including traffic control, accident prevention, and travel ease and comfort. VANETs are now being suggested as a primary enabler of the future fifth generation system, when

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... ned with SDN. Using SDN-Based 5G VANETs Provide low latency, high bandwidth, Longer connectivity without failure, and support a greater number of users. In this paper we will describe how generations are developed and what are the differences between them. The main characteristics of using SDN based 5G VANET are discussed. Also, we describe four main attacks of SDN- VANET on security and security services that provided by SDN based 5G VANET. In addition, challenges and needs of SDN based 5G VANETS will be discussed. Then we will review some literatures then summarize their results. Finally, we will conclude the paper.