FDL结构竞争解决的研究

使用光纤延时线（FDL）来解决光分组交换中的竞争问题,研究系统丢包率、时延与输入端口数、输出端口数、FDL数之间的关系,并比较输入端口优先、FDL优先、输入端口和FDL优先级的三种光分组调度策略。结果表明：适当减少端口数,增大FDL数目可以使丢包率趋近于零;而适当增大端口数,减小FDL数目又可以使时延减小。因此,在使用FDL解决竞争冲突时,端口数和FDL数目的选择很重要,它们之间的关系大小直接影响到丢包率和时延的大小。

Contention Resolution Scheme Based on FDL Structure

Fiber delay line(FDL) was utilized to deal with the competition problem in optical packet switching,from which Studying the relationship of the packet lose-rate and delay-time with the number of input ports,output ports and FDLs was studied.Three kinds of optical packet switching methods are presented as: initiative for input port,initiative for FDL,and initiative for both input ports and FDL.Comparative results indicate: appropriate reducing the port number and increasing FDL number can make the packet los...