Optical burst switching (OBS) - a new paradigm for an optical Internet
Journal of High Speed Networks - Special issue on optical networking
Congestion control for high bandwidth-delay product networks
Proceedings of the 2002 conference on Applications, technologies, architectures, and protocols for computer communications
Modeling the throughput of TCP Vegas
SIGMETRICS '03 Proceedings of the 2003 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
A Case for TCP Vegas in High-Performance Computational Grids
HPDC '01 Proceedings of the 10th IEEE International Symposium on High Performance Distributed Computing
Grid-enpowered Optical Burst Switched Network: Architecture, Protocols and Testbed
ICNS '07 Proceedings of the Third International Conference on Networking and Services
Performance of Optical Burst Switched Networks for Grid Applications
ICNS '07 Proceedings of the Third International Conference on Networking and Services
Performance analysis of TCP-friendly AIMD algorithms for multimedia applications
IEEE Transactions on Multimedia
Control architecture in optical burst-switched WDM networks
IEEE Journal on Selected Areas in Communications
Absolute QoS differentiation in optical burst-switched networks
IEEE Journal on Selected Areas in Communications
TCP Vegas: end to end congestion avoidance on a global Internet
IEEE Journal on Selected Areas in Communications
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TCP performance over bufferless Optical Burst Switched (OBS) networks could be significantly degraded due to the misinterpretation of network congestion status (referred to as false congestion detection). It has been reported that burst retransmission in the OBS domain can improve the TCP throughput by hiding burst loss events from the upper TCP layer, which can effectively reduce the congestion window fluctuation at the expense of introducing additional delay. However, the additional delay may cause performance degradation for delay-based TCP implementations that are sensitive to packet round trip time in estimating the network congestion status. In this paper, a novel implementation of TCP Vegas that adopts a threshold-based mechanism is proposed for identifying the network congestion status in OBS networks. Analytical models are developed to evaluate the throughput of conventional TCP Vegas and threshold-based Vegas over OBS networks with burst retransmission. Simulation is conducted to validate the analytical model and to compare threshold-based Vegas with a number of legacy TCP implementations, such as TCP Sack and TCP Reno. The analytical model can be used to obtain a proper threshold value that results in an optimal steady state TCP throughput.