WDM网状网中基于负载平衡的动态波带保护算法

Dynamic waveband protection algorithm for balancing traffic in WDM mesh networks

为解决WDM网状网的波带保护问题,提出一种基于多层OXC结构的动态专用波带保护(DDWP)算法.该算法以最小化可选路径对端口占用总数为第一优化目标,以路径对所经链路总数最小为第二优化目标.在不同负载动态业务下对DDWP算法进行了仿真研究.结果表明:DDWP算法有利于网络负载均衡和提高端口利用率,降低了全网阻塞率.

Waveband switching （WBS） was used to reduce the complexity and the size of multi-granular optical cross-connect （MG-OXC） in wavelength-division-multiplexing （WDM） optical networks. A dynamic dedicated waveband protection （DDWP） algorithm was developed with the objective to minimize the total ports on an available route and spreading the traffic to each fiber link based on a three-layer MG-OXC. Traffic balance was considered to solve the problem of WBS effectively under dynamic network traffic. Simulations under various dynamic traffic show that DDWP can achieve significant performance gain and reduce blocking probability.