With the development of the massive satellite constellation and the on-orbit laser-based communication equipment, the wavelength routing optical satellite network (WROSN) becomes a potential solution for on-orbit, high-capacity, and high-speed communication. Since the inter-satellite links (ISLs) are time-varying, one of the fundamental considerations in the construction of the WROSN is assigning limited laser communication terminals for each satellite to establish ISLs with the visible satellites. Therefore, we propose a links assignment scheme (LAS) based on the potential edges importance matrix (PEIM) algorithm to construct a temporarily stable topology of the ISLs for a dual-layer constellation. The simulation results showed that the LAS based on the PEIM algorithm is better than LAS based on the random or Greedy algorithm in terms of node-to-node distance, node pair connectivity, wavelength demand, and transmission delay. The node pair connectivity and wavelength demand in WROSN is a trade-off problem. The research in this paper also brings a novel method for reduction of the cost of the on-board resources, that is through designing topology of the ISLs with links assignment algorithm.

翻译：随着大规模卫星星座及在轨激光通信设备的发展，波长路由光卫星网络（WROSN）成为实现高容量、高速在轨通信的潜在解决方案。由于星间链路（ISLs）具有时变特性，构建WROSN的基础问题之一是为每颗卫星分配有限的激光通信终端，以与可见卫星建立星间链路。为此，我们提出一种基于潜在边重要性矩阵（PEIM）算法的链路分配方案（LAS），用于构建双层星座中星间链路的临时稳定拓扑。仿真结果表明，在节点间距离、节点对连通性、波长需求及传输时延方面，基于PEIM算法的LAS优于基于随机算法或贪婪算法的LAS。WROSN中的节点对连通性与波长需求存在权衡问题。本研究同时为降低星载资源成本提供了新方法，即通过链路分配算法设计星间链路拓扑。