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Congestion Control for Burst Loss Reduction in Labeled OBS Network  

Park Jonghun (숭실대학교 정보통신전자공학부)
Yoo Myungsik (숭실대학교 정보통신전자공학부)
Abstract
The optical Internet is considered as a feasible solution for transporting huge amount of traffic volume in the future Internet. Among optical switching technology for the optical Internet, OBS becomes one of the most promoting solution. Recently, a lebeled OBS(LOBS) architecture is considered for an efficient control on OBS network. Given that a data burst may contain few thousands of IP packets, a single loss of data burst results in a serious throughput degradation in LOBS network. In this paper, we improve the performance of LOBS network by introducing the burst congestion control mechanism. More specifically, the OBS router at the network core detects the network congestion by measuring the loss probability of burst control packet. The OBS router at the network edge reduces the burst generation according to the network condition repored by the OBS router at the network core. Through the simulations, it is shown that the proposed congestion control mechanism can reduce the burst loss probability and improve the LOBS network throughput.
Keywords
Labeled OBS; OBS; Congestion Control; Adaptive Assemble Time; Burst Assembly;
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