论文标题
自由空间光学卫星网络中的临时激光间链路
Temporary Laser Inter-Satellite Links in Free-Space Optical Satellite Networks
论文作者
论文摘要
自由空间光学卫星网络（FSOSN）中卫星之间的激光卫星间链接（LISL）可以分为两类：永久性LISL（PLS）和临时LISL（TLS）。由于高LISL设置时间，下一代FSOSNS（NG-FSONS）中的TLS并不可取，但是在下一代二代FSOSNS（NNG-FSOSNS）中可能会变得可行。使用卫星星座进行Starlink的第一阶段，我们研究了TLS对NG-FSON（仅具有PLS）与NNG-FSOSN（具有PLS和TLS）在不同长距离之间的NNG-FSO（具有PLS和TLS）的影响卫星的不同LISL范围，包括659.5公里，1,319公里，1,500公里，1,700公里，1,700公里，2,500公里，3,500公里和5,016公里。从结果可以看出，TLS提供了更高的卫星连接性，从而提供了更高的网络连接，并且与NG-FSOSN相比，在所有LISL范围内，NNG-FSOSN的网络潜伏期都较低。与NG-FSOSN相比，NNG-FSON的潜伏期改善在1,500公里，1,700 km和2,500公里的LISL范围内相当显着，其中改进为16.83 ms，23.43 ms，MS 23.43 ms和18.20 ms和18.20 ms，对于Sydney-Sao-sao internital internental internental internental internental nestenternaltal internital nestentalnent nestental nestentalnental nestentaltentalnental internital nestental nestental nessental。对于多伦多 - 伊斯坦布尔，马德里 - 托科和纽约 - 贾卡塔互联网，改进分别为14.58 ms，23.35 ms和23.52 ms，在1,700公里的LISL范围内。
Laser inter-satellite links (LISLs) between satellites in a free-space optical satellite network (FSOSN) can be divided into two classes: permanent LISLs (PLs) and temporary LISLs (TLs). TLs are not desirable in next-generation FSOSNs (NG-FSOSNs) due to high LISL setup time, but they may become feasible in next-next-generation FSOSNs (NNG-FSOSNs). Using the satellite constellation for Phase I of Starlink, we study the impact of TLs on network latency in an NG-FSOSN (which has only PLs) versus an NNG-FSOSN (which has PLs and TLs) under different long-distance inter-continental data communications scenarios, including Sydney-Sao Paulo, Toronto-Istanbul, Madrid-Tokyo, and New York-Jakarta, and different LISL ranges for satellites, including 659.5 km, 1,319 km, 1,500 km, 1,700 km, 2,500 km, 3,500 km, and 5,016 km. It is observed from the results that TLs provide higher satellite connectivity and thereby higher network connectivity, and they lead to lower average network latency for the NNG-FSOSN compared to the NG-FSOSN in all scenarios at all LISL ranges. In comparison with the NG-FSOSN, the improvement in latency with the NNG-FSOSN is significant at LISL ranges of 1,500 km, 1,700 km, and 2,500 km, where the improvement is 16.83 ms, 23.43 ms, and 18.20 ms, respectively, for the Sydney-Sao Paulo inter-continental connection. For the Toronto-Istanbul, Madrid-Tokyo, and New York-Jakarta inter-continental connections, the improvement is 14.58 ms, 23.35 ms, and 23.52 ms, respectively, at the 1,700 km LISL range.
