A fuzzy mechanism to avoid packet accumulation in fair flow control

Authors:
Weirong Liu;Min Wu;Jun Peng;Guojun Wang
Affiliations:
School of Information Science and Engineering, Central South University, Changsha, China;School of Information Science and Engineering, Central South University, Changsha, China;School of Information Science and Engineering, Central South University, Changsha, China;School of Information Science and Engineering, Central South University, Changsha, China
Venue:
FSKD'09 Proceedings of the 6th international conference on Fuzzy systems and knowledge discovery - Volume 3
Year:
2009

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Abstract

To avoid the network congestion and let the end hosts share the link resources fairly, F. P. Kelly proposed Classic Kelly Model based on an optimal theory. This model can deduce algorithm which has proportional fairness equilibrium point and has asymptotically stability. However, the primal algorithm of Kelly model leads to the packet accumulation in the queue of the bottle link. By using heuristic fuzzy rules, this paper designs a fuzzy controller to adjust the additive increase parameter of the primal algorithm. The primal algorithm with the fuzzy controller can let the aggregate data flow send by hosts equal the bandwidth of the bottle link, so it can avoid the packet accumulation in queue. The fuzzy control mechanism also keeps the fairness and asymptotically stability. The simulation validates the feasibility and adaptability of our fuzzy controller.