A Cross Traffic Estimate Model for Optical Burst Switching Networks

The cross traffic intensity of the optical burst switching network is a key parameter for the edge node operations. This paper provides an estimate model for edge nodes to infer the cross traffic on the control plane of the bottleneck core node. A normal M/D/1 and a special M/G/1 queuing model are applied to core nodes without and with wavelength conversion device respectively. Service time of the special M/G/1 queuing model is dependent with the traffic load. Edge nodes can then estimate the cross traffic of the core node through a likelihood function as well as a moment estimator. The observing variable that input to the estimator is the sojourn time of the burst control packet which can be obtained by sampling the residual offset time.