Generalized Burst Assembly And Scheduling Techniques For Qos Support In Optical Burst-Switched Networks

In this paper, We address the issue of providing differentiated services to UP packets over an optical burst switched core network, and we introduce a new approach for assembling packets into a burst In this, technique, a composite burst is created by combining packets of different classes into the same burst. The packets are placed from-the head of the burst to the tail of the burst in order of decreasing class. The performance of this approach is enhanced by using a burst segmentation technique in which, during,burst contention, only the packets in the tail of a burst are dropped. We describe a generalized model for burst assembly and burst scheduling,and we propose several composite burst assembly methods. We observe that having multiple class of packets in a burst performs better than having a single class of packets in a burst.