Description
Springer Optical Burst Switched Networks 2004 Edition by Jason P. Jue Vinod M. Vokkarane
Next-generation high-speed Internet backbone networks will be required to support a broad range of emerging applications which may not only require significant bandwidth but may also have strict quality of service (QoS) requirements. Furthermore the traffic from such applications are expected to be highly bursty in nature. For such traffic the allocation of static fixed-bandwidth circuits may lead to the over-provisioning of bandwidth resources in order to meet QoS requirements.Optical burst switching (OBS) is a promising new technique which attempts to address the problem of efficiently allocating resources for bursty traffic. In OBS incoming data is assembled into bursts at the edges of the network and when the burst is ready to be sent resources in the network are reserved only for the duration of the burst. The reservation of resources is typically made by an out-of-band one-way control message which precedes the burst by some offset time. By reserving resources only for the duration of the burst a greater degree of utilization may be achieved in the network.This book provides an overview of optical burst switching. Design and research issues involved in the development of OBS networks are discussed and approaches to providing QoS in OBS networks are presented. Topics include:- Optical burst switching node and network architectures- Burst assembly- Signaling protocols- Contention resolution - Burst scheduling- Quality of service in OBS networks Table of contents : Dedication List of Figures List of Tables Preface 1. Introduction 1.1 Optical Circuit Switching 1.2 Optical Packet Switching 1.3 Optical Burst Switching References 2. Technology And Architecture 2.1 OBS Network Architecture 2.2 Enabling Technology 2.3 Physical-Layer Issues References 3. Burst Assembly 3.1 Timer and Threshold Selection 3.2 Effect of Burst Assembly on Traffic Characteristics 3.3 Evaluation of Threshold-Based Burst Assembly Techniques References 4. Signaling 4.1 Classification of Signaling Schemes 4.2 Just-Enough-Time (JET) 4.3 Tell-and-Wait (TAW) 4.4 Intermediate Node Initiated (TNT) Signaling 4.5 Analytical Delay Model 4.6 Numerical Results References 5. Contention Resolution 5.1 Optical Buffering 5.2 Wavelength Conversion 5.3 Deflection Routing 5.4 Burst Segmentation 5.5 Segmentation with Deflection 5.6 Contention Resolution and QoS References 6. Channel Scheduling 6.1 Segmentation-Based Channel Scheduling 6.2 OBS Core Node Architecture 6.3 Segmentation-Based Non-Preemptive Scheduling Algorithms 6.4 Segmentation-Based Non-Preemptive Scheduling Algorithms with FDLs 6.5 Numerical Results References 7. Quality Of Service 7.1 Relative QoS in OBS Networks 7.2 Absolute QoS References 8. Other Topics 8.1 Labeled OBS 8.2 Multicasting in OBS 8.3 Protection for Optical Burst-Switched Networks 8.4 TCP over OBS 8.5 OBS Testbeds References Index