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Traffic policing mechanism schemes over high speed networks become significant whenever congestion arises at the entrance of buffer prior to the network. If congestion is not suitably controlled, the networks may not be able to cope their quality-of-service (QoS) requirements. Another approach must drop incoming frames from which buffer is not available and has to rely on the end-to-end protocols for the recovery of lost frames. However, one way to solve this problem, we have proposed type-2 fuzzy control which is suitable for uncertain traffic, especially in alternative burst and silence. We evaluated and compare the performance of the three mechanisms in policing mechanisms: type-2 fuzzy (T2F), Fuzzy control (FC) and conventional policing mechanism on Leaky Bucket (LB). Simulation results showed that the type-2 fuzzy logic control scheme could help to improve the performance in policing mechanisms much better than conventional policing one while various types of burst/silence traffic are being generated.
Date of Conference: 19-21 May 2010