Congestion Control Using On-Board Data Units in VANET Scenar IOS

Abstract

Vehicular communications becomes the rising technology in the research areas in the recent years, which gives some apparent results and their applications getting increased day-by-day. There are several applications like weather monitoring, traffic control, road safety warnings, driving assistance etc., generates enormous amount of data by sensing the physical phenomenon in order to distribute them among the communication parties. These leads to a huge amount of a load in the centralized network transportation infrastructure even if the frequently accessed data cached at the specified locations either in vehicles or Road Side Units (RSU). On board data units (OBDU) are placed in each vehicle to sense and cache the information in order to reduce the service access delay, which acts as an Access Points (AP) are placed along with the RSU’s so that the required data can be sent according to the service access time without any delay even the area is not covered by the particular RSU frequency range. Hence, the packet delivery ratio and throughput can be efficiently increased with the decrease in query latency.