Apparatus and method for transferring data bursts in optical burst switching network

摘要

An apparatus and method for transferring data bursts in an optical burst switching network are provided. In an optical burst switching network including a number of nodes, each node including demultiplexers and multiplexers connected to a plurality of input/output ports for transferring the data bursts through a number of wavelengths, the apparatus for transferring data bursts includes a control module connected between the demultiplexers and the multiplexers for obtaining information in a control packet to sort and confirm service classes of the data bursts according to delay time and blocking rate; a switching unit connected between the demultiplexers and the multiplexers for switching the data bursts to an output port of a corresponding destination node; a first buffer connected between the switching unit and the output port for delaying the sorted and confirmed data bursts from the control module once by a preset delay time according to output resource availability and sending them to the output port when the data bursts are sensitive to delay time; and a second buffer connected between an input and an output of the switching unit for circulating and delaying the sorted and confirmed data bursts up to a preset recirculation limit according to output resource availability and then sending the data bursts to the output port when the data bursts are insensitive to delay time.