星上交换技术在卫星网络通信中所起的重要作用已引起人们越来越多的关注。目前地

面网络交换技术成熟，而且吞吐量高。但是由于地面网络交换系统中交换开关调度算法复杂度高，查表速率要求高，缓存容量需求大，以及空间环境和卫星有效载荷功耗、体积等因素限制，在卫星网络中并不适宜采用地面网络交换技术。适合基于激光链路的卫星网络的星上交换技术仍然处于探索阶段，星上交换技术是目前重要的研究课题。-Stars on the exchange of technology in the satellite network communications played an important role has attracted growing attention. Present terrestrial network switching technology is mature, and high throughput. However, due to terrestrial network switching systems exchanging switch scheduling algorithm for high complexity, look-up table for high speed, cache size in great demand, as well as the space environment and satellite payload power, volume and other constraints, in the satellite networks are not suitable for use on the ground network switching technology. Suitable for laser-based satellite network, satellite link-exchange technology is still at the exploratory stage, the satellite switching technology is an important research topic.