Optical burst switching (OBS) - a new paradigm for an optical Internet
Journal of High Speed Networks - Special issue on optical networking
Optical networks: a practical perspective
Optical networks: a practical perspective
Schedule burst proactively for optical burst switched networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Control architecture in optical burst-switched WDM networks
IEEE Journal on Selected Areas in Communications
Wavelength Selection in OBS Networks Using Traffic Engineering and Priority-Based Concepts
IEEE Journal on Selected Areas in Communications
Shared fiber delay line buffers in asynchronous optical packet switches
IEEE Journal on Selected Areas in Communications - Part Supplement
Optical burst switching: a new area in optical networking research
IEEE Network: The Magazine of Global Internetworking
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Optical Burst Switching (OBS) networks rely on complex and costly contention resolution strategies to reach reasonable bandwidth utilization efficiency. Recent research efforts have suggested that proactive contention minimization strategies based on selectively delaying bursts at the ingress edge nodes, exploiting their inexpensive electronic buffers, can assist in the task of relaxing the hardware requirements of the network core nodes. This paper considers the main strategies of selectively delaying bursts at the ingress nodes, establishing their similarities and differences. The performance of these strategies is evaluated and compared by means of network simulation. The results show that a contention minimization strategy using the selective ingress delays to increase the degree of isolation on different wavelengths of burst traffic going through overlapping paths achieves the largest reduction of burst losses. Moreover, this performance improvement can be attained while at the same time reducing the number of wavelength converters required at the core nodes and slightly relaxing the number of transmitters and receivers needed at the edge nodes, provided that tuneable devices are employed.