An Intelligent Packet Dropping Algorithm with ECN Capability

Abstract

As an effective supplement to end-to-end congestion control mechanism, active queue management aims to keep high link utility while maintaining low queuing delay. As an effective mechanism, the FIPD (fuzzy intelligent packet dropping) algorithm provides a brand-new method for active queue management. However, the FIPD algorithm also has its intrinsic defects, such as high packet loss rate. The objective of this paper is to overcome the defects of FIPD, and a new active queue management method FIPE(FIPD with ECN) is also proposed. Firstly, in this paper, the algorithm FIPD is reviewed and analyzed. Then the advantages and disadvantages are also pointed out. In order to overcome the defects such as high packet loss rate, the well-known ECN mechanism is introduced, which greatly improves the successful packet transmission. At the same time, some amendments are employed and a new active queue management algorithm FIPE is developed. Finally, the validity of the new algorithm is verified by a series of simulations on NS2 simulator.