Читать книгу Fog Computing - Группа авторов - Страница 55

Introducing the cloud computing into VANET was redemption since it provided a solution to most challenges that traditional design of VANET faced, such as decreased flexibility, scalability, poor connectivity, and inadequate intelligence [72]. However, the new generation of VANET has introduced new requirement with respect to the high mobility, low latency, real-time applications, and reliable connectivity. For all these reasons, adding fog computing to the equation has emerged as a potential solution. Based on the existing research it seems that there are still some obstacles to be dealt with, for example, the management of fog server in geographically distributed fog nodes. The difficulty relies on the positioning of each edge server in a given area, which is important for fog approach and it considers many parameters, such as vehicles density, traffic status data, and processing load on the servers. Another challenge is related to management of neighboring fog servers with respect to communication and access, which can be affected by the environment. Finally, the assessment and handling dissemination of real-time critical message can be problematic, since design should be capable of distinguishing between a true or false event [73].