卫星融合交换系统负载均衡异构路径算法

卫星交换系统中的光与分组两种异构业务需要进行融合交换,为了合理利用卫星异构交换系统中的异构路径资源,需要对异构交换路径采用一体化生成方法.基于卫星异构融合交换结构模型,定义了异构路径影响因子,用以定量衡量异构路径对整体交换性能的影响,并针对卫星交换结构特点,采用交换系统子路径个数以及路径转换参数作为约束条件,通过构建异...

Load balancing heterogeneous path algorithm for satellite hybrid switching system

For both optical and packet heterogeneous paths existing in satellite optical electrical hybrid switching system, the method of independently calculating the optical/packet switching path can′t comprehensively consider the availability of the system's path resources, which may lead to the selection of unoptimized switching paths with high paths blocking probability, even may cause a crash of the switching system. The homogeneous path influence factor and the heterogeneous path influence factor were defined to quantitatively measure path weights. In addition, the number of sub paths and the path transformation parameters of the switching system were used as constraints. Then, by constructing a heterogeneous path resource weight function, the load balancing capability of the paths in the satellite heterogeneous switching system was accurately evaluated. Moreover, the indicators of load balancing degree and the path blocking probability were simulated based on switching structure simulation model by using MATLAB and OMNET. The simulation results show that, compared with traditional routing and wavelength assignment algorithms, the load balancing heterogeneous path algorithm can achieve stable performance curves under deterministic service requests and effectively reduce the average load balancing degree of the system by about 32% and the average path blocking probability by about 51% under a specific service request.