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中文摘要：
基于虚拟突发的概念,提出了一种新的光突发交换（OBS）数据信道重调度算法,即（WCRA-VB）。新算法一方面有效地克服了传统OBS网络中数据突发（DB）与控制分组（BHP）到达顺序不一致带来的问题,另一方面极大地增强了数据块重调度的灵活性。仿真结果表明：与传统OBS重调度算法（其重调度粒度为常规突发）和原虚拟突发调度方案相比较,本文的WCRA-VB算法具有以下优势：既能有效改善网络总的丢包率,也能提高链路利用率,同时具有很强的灵活性。
英文摘要：
A new reschedling algorithm,namely wavelength channel re-allocation based on virtual burst（WCRA-VB） algorithm was proposed.It can overcome the problems due to the different arrival sequence between the data bursts（DB） and control packets（BHP）,and can increase the flexibility of rescheduling data blocks markedly.The simulation results show that it has improved the overall packet loss probability and the link utilization in traditional OBS rescheduling algorithm whose rescheduling granularity is normal burst and the initial virtual burst scheduling scheme.Moreover this scheme can increase network flexibility.
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