光码标签交换网络边缘节点FEC的研究

构建了光码标签交换网边缘节点的结构,结合光码分复用技术提出了转发等价类(FEC)分组结构的设计方案。分组结构适合变长数据分组的传输,在核心节点能够实现对标签信息的可并行处理,提高了处理效率。在此基础上,针对开销比对网络传输性能的影响,对FEC结构中的各参量与开销比的关系进行了仿真研究;采用了固定时隙算法对数据分组进行封装,对到达率和封装时延与分组丢失率的关系进行仿真分析。

Study of FEC at edge node of optical code label switching network

The structure block of the optical code label switching network was built,and the design scheme for the forwarding equivalent classes(FEC) was proposed employing OCDM technology which was appropriate for variable packets transmission and allow the label processed in parallel in core node.The overhead between the duration of control bits and the duration of payload was investigated based on the above design scheme.The fixed slot algorithm(FSA) was employed to assemble the incoming packets in the assemble queue,simulation results and analysis were given between the relation of arrival ratio/assemble slot and packets loss ratio.