earticle

영어

Vehicular Ad Hoc Network (VANET) has received increased attention from scholars and industries in recent years. Meanwhile, Congestion control remains the major concern for VANET application due to its characteristics such as bandwidth limitation, fast change of topology and lack of central coordination. Researchers have proposed a number of solutions to overcome these challenges and also to reduce congestion in VANET environment. These solutions are based on packet generation rate, transmit power control, utility function, carrier sense threshold or a combination of them. In this paper, the existing congestion control approaches is classified into three main classes, namely, proactive, reactive and hybrid. Besides, we propose and implement an algorithm by which carrier sense (CS) threshold or MaxBeaconingLoad (MBL) value can be assigned dynamically for fine-tuning the Distributed Fair transmits Power Adjustment for VANETs (D-FPAV) congestion control approach. In addition to optimal channel bandwidth usage, the proposed algorithm can be used in any situation considering traffic and non-traffic conditions.