大型低轨星座网络规划方法与仿真分析

doi:10.11959/j.issn.2096-8930.20200212

天地一体化信息网络 ›› 2020, Vol. 1 ›› Issue (2): 87-94.doi: 10.11959/j.issn.2096-8930.20200212

所属专题：专题：天地一体化信息网络体系架构

• 专题：天地一体化信息网络体系架构 • 上一篇下一篇

大型低轨星座网络规划方法与仿真分析

刘立祥, 刘帅军

中国科学院软件研究所，北京 100190

修回日期:2020-11-20 出版日期:2020-12-20 发布日期:2020-12-01
作者简介:刘立祥（1973- ），男，博士，中国科学院软件研究所研究员，主要研究方向为新型网络技术、天地一体化组网技术等，先后主持了多项“863”卫星组网相关课题，“973”信息栅格研究项目、中国科学院支撑技术项目和自然科学基金项目，在国内外重要学术期刊和会议上发表论文60余篇，出版《天地一体化网络》专著一部。
刘帅军（1988- ），男，博士，中国科学院软件研究所助理研究员，主要研究方向为卫星通信、低轨星座网络、卫星5G融合。

Network Planning Method and Simulation Analysis for Large-Scale Low Earth Orbit Satellite Constellation Networks

Lixiang LIU, Shuaijun LIU

Institute of Software Chinese Academy of Sciences, Beijing 100190, China

Revised:2020-11-20 Online:2020-12-20 Published:2020-12-01

摘要/Abstract

摘要：

得益于全球覆盖、高吞吐量和低时延等优势，大型低轨星座网络已成为了全球发展的热点。然而，大型低轨星座网络规划方法及仿真建模分析尚未得到深入研究。重点解决如下两个问题：如何评估给定的大型低轨星座网络、如何设计或优化星座网络。建立了用以评估大型低轨星座网络性能的3个关键指标，即网络覆盖率、系统吞吐量、业务往返时延。以此关键指标为设计优化目标，对卫星星座部署、关口站部署和无线资源管理进行分析和设计，并搭建用于大型低轨星座网络的集成网络评估和规划仿真平台，以验证所提出的网络规划方案。仿真结果表明，所设计的网络规划仿真平台可以支持对大型低轨星座网络的评估和规划。

关键词: LEO卫星星座网络, 性能评估, 网络规划, 仿真平台

Abstract:

Thanks to the advantages of global coverage, high capacity and low latency, the large-scale LEO satellite constellation networks has become a hot spot for global development.However, planning methods and simulation modeling research for LS-LEOSCN has not been well studied.This paper focused on the following two issues, namely how to evaluate a given LSLEOSCN, and how to design or optimize a constellation network.Three key indicators for evaluating the performance of LSLEOSCN were established, namely network coverage (CT), system throughput (ST) and round-trip time (RTT).Further, the satellite constellation deployment (SCD), gateway station deployment (GSD) were analyzed and designed in the integrated network evaluation and planning (NEaP) platform for LS-LEOSCN.The simulation results showed that the designed NEaP platform could support the development of LS-LEOSCN evaluation and planning.

Key words: LEO satellite constellation network, performance evaluation, network planning, platform implementation

中图分类号:

TN927+.2

刘立祥, 刘帅军. 大型低轨星座网络规划方法与仿真分析[J]. 天地一体化信息网络, 2020, 1(2): 87-94.

Lixiang LIU, Shuaijun LIU. Network Planning Method and Simulation Analysis for Large-Scale Low Earth Orbit Satellite Constellation Networks[J]. Space-Integrated-Ground Information Networks, 2020, 1(2): 87-94.

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参数名称	参数设置
LEO卫星星座	OneWeb
卫星数量/颗	M=648
轨道面个数/个	N_O=18
轨道面内卫星数量/颗	N_P=36
轨道高度/km	h=1 200
轨道倾角	i=87°
终端通信最小仰角	40°
馈电站通信最小仰角	10°
馈电链路传输速率/(Gbit/s^-1)	21
用户链路传输速率/(Gbit/s^-1)	20
星间链路传输速率/(Gbit/s^-1)	1
馈电站个数/个	J=7
馈电站可连接卫星数量/颗	K=[1～20]
星间链路ISLs	无
传输体制	DVB-S2X^[14]
全球业务量分布	基于全球人口分布，人均1 Mbit/s+1%激活率
仿真分析步长/min	1
仿真分析周期/h	24
经纬度颗粒度/°	1

大型低轨星座网络规划方法与仿真分析

Network Planning Method and Simulation Analysis for Large-Scale Low Earth Orbit Satellite Constellation Networks

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