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光突发交换网络中面向低时延高可靠业务的突发编码机制

DOI: 10.13190/j.jbupt.2014.05.006, PP. 26-30

Keywords: 光突发交换,OL-IRA码,在线,丢包恢复

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Abstract:

为了保证光突发交换(OBS)网络中业务高可靠性的同时,降低突发的端到端的时延,提出了一种基于不规则重复积累(IRA)码的突发编码机制.对IRA码校验矩阵结构进行了一定的调整,得到一种能对突发进行在线编解码的在线不规则重复累积(OL-IRA)码.利用OL-IRA码对信息突发进行编码,以便用产生的冗余突发来恢复丢失的信息突发.仿真结果表明,OL-IRA码在保证恢复丢包能力的同时,也能明显缩短丢包恢复的时延.

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