The Impact of the Extra Offset-Time based QoS Mechanism in TCP over Optical Burst Switching Networks

M.-G. Kim, H. Jeong, J.Y. Choi, J.-H. Kim, and M. Kang (Korea)


OBS, offset time, QoS, TCP


Optical Burst Switching is a promising switching technology to exploit the potential benefits of optical communication for next generation optical networks. The extra offset-time based QoS mechanism is already suggested. Generally speaking data traffic having high priority is known to have better performance than that having low priority. However under certain circumstance we found that the mechanism does not support the aforementioned benefits in viewpoint of TCP-level performance. Simulation results show the limitation of QoS support based on the extra offset-time.

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