CAJ | 학술논문

在可重排多级多平面Clos光交换结构中，故障的存在影响光交换结构的无阻塞特性，带来业务的阻塞。该文通过分析故障的特性，提出一种基于阈值的限流算法。该算法通过考虑故障对内外层调度的综合影响，找出一定会受到故障影响的业务并在最外层进行限流，从而保证各层调度的高效实现和业务阻塞率的下降。仿真结果表明限流算法能有效降低业务阻塞率；且随着故障所在位置的深入或者时隙数的增加，限流算法的性能更优。
재가중배다급다평면Clos광교환결구중，고장적존재영향광교환결구적무조새특성，대래업무적조새。해문통과분석고장적특성，제출일충기우역치적한류산법。해산법통과고필고장대내외층조도적종합영향，조출일정회수도고장영향적업무병재최외층진행한류，종이보증각층조도적고효실현화업무조새솔적하강。방진결과표명한류산법능유효강저업무조새솔；차수착고장소재위치적심입혹자시극수적증가，한류산법적성능경우。
Fault in a rearrangeable multistage multi-plane Clos optical switching fabric network will change the non-blocking characteristics of the switching fabric and introduce traffic blockage. Based on analyzing the properties of the faults, a threshold-based limiting algorithm is proposed. Considering the combined fault effects to different layers, the algorithm finds out the traffic loads which can not be supported due to the fault. Those traffic loads are then limited in the outmost layer to achieve efficient scheduling of the following layers and to reduce the blocking probability. Simulation results show that the limiting algorithm can reduce the blocking probability effectively. With the deepening of the fault location and time slot increasing, the algorithm has a better performance.