A novel fuzzy congestion control algorithm for router buffers

Internet users are increasing with the advent of technology particularly voice over IP. Hence the amount of data carried by routers also increases sporadically. Congestion control still remains to be a critical issue. It is necessary to implement an effective queuing algorithm on the router that governs buffering of packets on transmission. In this paper, Adaptive Drop Tail Fuzzy Logic (ADT-FL) is proposed to regulate the queue size of the router buffers based on the input traffic conditions and available link bandwidth. Packet level ns-2 simulation shows that the proposed ADT-FL has better performance and low packet loss than conventional Drop Tail and RED queuing algorithms. Low packet loss rate leads to high throughput, low latency, low queuing delay resulting in better network performance.