A Parallel Discrete Event Simulation Engine for the Low-Earth-Orbit Satellite Constellation Networks  

作　　者：Su Hailong Liu Yaoqi Zhou Yiqing Shi Jinglin Li Hongguang Qian Manli 

机构地区：[1]Institute of Computing Technology,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]State Key Lab of Processors,Institute of Computing Technology,CAS,Beijing 100190,China [4]Zhongke Nanjing Mobile Communication&Computing Innovation Institute,Nanjing 211135,China [5]Beijing Sylincom Technology Co.,Beijing 100190,China

出　　处：《China Communications》2024年第8期264-275,共12页中国通信（英文版）

基　　金：supported by Jiangsu Provincial Key Research and Development Program (No.BE20210132);the Zhejiang Provincial Key Research and Development Program (No.2021C01040);the team of S-SET

摘　　要：Low-Earth-Orbit satellite constellation networks(LEO-SCN)can provide low-cost,largescale,flexible coverage wireless communication services.High dynamics and large topological sizes characterize LEO-SCN.Protocol development and application testing of LEO-SCN are challenging to carry out in a natural environment.Simulation platforms are a more effective means of technology demonstration.Currently available simulators have a single function and limited simulation scale.There needs to be a simulator for full-featured simulation.In this paper,we apply the parallel discrete-event simulation technique to the simulation of LEO-SCN to support large-scale complex system simulation at the packet level.To solve the problem that single-process programs cannot cope with complex simulations containing numerous entities,we propose a parallel mechanism and algorithms LP-NM and LP-YAWNS for synchronization.In the experiment,we use ns-3 to verify the acceleration ratio and efficiency of the above algorithms.The results show that our proposed mechanism can provide parallel simulation engine support for the LEO-SCN.

关 键 词：CONSTELLATION low earth orbit satellite ns-3 null-message parallel discrete-event simulation 

分 类 号：TN927.2[电子电信—通信与信息系统]