Dynamic laser inter-satellite links (LISLs) provide the flexibility of connecting a pair of satellites as required (dynamically) while static LISLs need to be active continuously between the energy-constrained satellites. However, due to the LISL establishment time (termed herein as LISL setup delay) being in the order of seconds, realizing dynamic LISLs is currently unfeasible. Towards the realization of dynamic LISLs, we first study the quantification of LISL setup delay; then we calculate the end-to-end latency of a free-space optical satellite network (FSOSN) with the LISL setup delay; subsequently, we analyze the impact of LISL setup delay on the end-to-end latency of the FSOSN. We also provide design guidelines for the laser communication terminal manufacturers in the form of maximum tolerable value of LISL setup delay for which the FSOSN based on Starlink's Phase I satellite constellation will be meaningful to use for low-latency long-distance inter-continental data communications.

翻译：动态激光卫星间链路(LISLs)根据需要(动态)提供将一对卫星连接的灵活性,而静态LISL则需要持续地在受能源限制的卫星之间运行,然而,由于LISL的建立时间(此处称为LISL设置延迟)按秒顺序排列,实现动态LISL目前是行不通的。为了实现动态LISL,我们首先研究LISL设置延迟的量化;然后我们计算自由空间光学卫星网络(FSOSN)与LISL设置延迟的端到端的延迟;随后,我们分析LISL建立延迟对FSOSN的端到端的延迟的影响。我们还为激光通信终端制造商提供了设计准则,其形式是LISLS的设定最大可耐受值,为此,基于Starlink第一阶段卫星星座的FSOSNSN将有意义地用于低延时长距离的洲际数据通信。