一种新的基于FRR的OBS突发组装算法

A new burst assembly algorithm for the FRR-enabled OBS networks

为了适应大数据量的实时性和准实时性业务,降低突发延迟成为光突发交换(OBS)网络设计中要解决的一个重要问题.前向资源预留(FRR)是OBS网络中可以有效减小突发延迟的组装算法,但在带宽利用率方面却存在缺陷.针对FRR算法中存在的问题,提出了精确组装FRR算法(PA-FRR).理论分析和仿真结果都验证了该算法在提高系统带宽利用率方面的有效性.

In order to meet the future need of real-time and quasi-reahime applications, the OBS network design requires short latency time. FRR （forward resource reservation） algorithm is an efficient method to reduce the end-to-end data burst delay, but it still has some defections in bandwidth availability. Aiming at the potential problems in the FRR algorithm, PA-FRR （precision assembly with forward resource reservation） is proposed. Both theoretical analysis and simulation results demonstrate the advantages of the PA-FRR over to the FRR scheme.