A Low Pass Filter Traffic Shaping Mechanism for the Arrival of Traffic

To decrease the traffic burstiness, general method of traditional shaping mechanisms is to smooth the traffic rate or the packet interarrival time of existing flows. However, traffic burstiness is also induced by the gusty arrivals of new flows. According to our knowledge, there is no research which attempts to decrease the burstiness caused by the arrivals of new flows. To cope with this, a shaping mechanism to the interarrival of flow named interarrival low pass filter (ILPF) fore-shaping mechanism is proposed in this paper. By the low pass filter, the ILPF fore-shaping mechanism smoothes the flow interarrival time so as to decrease the traffic burstiness. The ILPF fore- shaping mechanism is well suitable for the real-time applications which can endure some delay for accessing. According to theoretic analysis and computer simulation, it is proved that the ILPF fore-shaping mechanism significantly improves the utilization of the network as well as providing QoS guarantees in terms of probability.