面向大规模低地球轨道卫星网络的星间链路连接策略

燕锋; 聂浩俭; 夏玮玮; 沈连丰

doi:10.11959/j.issn.1000-436x.2024119

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面向大规模低地球轨道卫星网络的星间链路连接策略

学术论文 | 更新时间：2024-09-10

- 面向大规模低地球轨道卫星网络的星间链路连接策略
- Inter-satellite link connection strategy for large-scale low earth orbit satellite networks
- 通信学报 2024年45卷第8期页码：100-109
- 作者机构：
  
  东南大学移动通信全国重点实验室，江苏南京 210096
- 作者简介：
  
  [ "燕锋（1983- ），男，湖北天门人，博士，东南大学移动通信全国重点实验室副教授，主要研究方向为无人机自组网、卫星互联网、无线传感器网络等。" ]
  [ "聂浩俭（2000- ），男，河南焦作人，东南大学移动通信全国重点实验室硕士生，主要研究方向为卫星网络拓扑控制、卫星路由等。" ]
  [ "夏玮玮（1975- ），女，江苏句容人，博士，东南大学移动通信全国重点实验室副研究员，主要研究方向为无线网络资源管理、边缘计算、泛在网络与短距离无线通信等。" ]
  [ "沈连丰（1952- ），男，江苏邳州人，博士，东南大学移动通信全国重点实验室教授、博士生导师，主要研究方向为宽带移动通信、短距离无线通信和泛在网络等。" ]
- 基金信息：
  
  国家自然科学基金资助项目(62293492)
- DOI：10.11959/j.issn.1000-436x.2024119
  中图分类号： TN92
- 收稿：2024-04-08，
  
  修回：2024-06-04，
  
  纸质出版：2024-08-25
- 稿件说明：
移动端阅览
燕锋,聂浩俭,夏玮玮等.面向大规模低地球轨道卫星网络的星间链路连接策略[J].通信学报,2024,45(08):100-109.

YAN Feng,NIE Haojian,XIA Weiwei,et al.Inter-satellite link connection strategy for large-scale low earth orbit satellite networks[J].Journal on Communications,2024,45(08):100-109.
燕锋,聂浩俭,夏玮玮等.面向大规模低地球轨道卫星网络的星间链路连接策略[J].通信学报,2024,45(08):100-109. DOI： 10.11959/j.issn.1000-436x.2024119.

YAN Feng,NIE Haojian,XIA Weiwei,et al.Inter-satellite link connection strategy for large-scale low earth orbit satellite networks[J].Journal on Communications,2024,45(08):100-109. DOI： 10.11959/j.issn.1000-436x.2024119.

摘要

针对大规模低地球轨道（LEO）卫星网络，提出了2类新型星间链路（ISL）连接策略：Grid-V和Grid+，并对传统的Grid连接策略进行改进。所提策略充分利用了次邻轨和跨邻轨星间链路，Grid-V连接策略舍弃了Grid连接策略的轨内链路，利用次邻轨和跨邻轨的星间链路形成网络拓扑；Grid+连接策略在保留Grid连接策略中的星间链路基础上，允许卫星与同轨道或者次邻轨道卫星建立跨星连接。针对Walker-Delta星座构型的大规模LEO卫星网络，设计了基于所提星间链路连接策略的最短距离路由算法，并分别从几何拓扑和数据包层面对路由进行了系统级仿真，以评估各连接策略的性能。仿真结果表明，在几何拓扑层面，所提策略可以有效减少平均路由跳数与路径切换次数；在数据包层面，所提策略在往返时延及抖动、路径占用率、平均吞吐量等方面具有更好的性能。

Abstract

For large-scale low earth orbit (LEO) satellite networks

two new inter-satellite link (ISL) connection strategies named Grid-V and Grid+ were proposed

which improved the traditional Grid connection strategy. The proposed strategies made full use of the ISL connected to adjacent and cross-adjacent orbits. The Grid-V connection strategy abandoned the intra-orbit links of the Grid connection strategy and used ISL of the adjacent and cross-adjacent orbits to form the network topology. The Grid+ connection strategy

while retaining the Grid connection strategy

allowed satellites to establish cross-satellite connections with satellites in the same orbit or the cross-adjacent orbits. For the large-scale LEO satellite network with a Walker-Delta constellation configuration

a shortest distance inter-satellite routing algorithm was designed based on the proposed ISL connection strategies

and system-level simulations were conducted from the perspectives of geometric topology and packet respectively to evaluate the performance of each connection strategy. Simulation results show that

from the perspective of geometric topology

the proposed strategies can effectively reduce the average number of routing hops and path switches. At the packet level

the proposed strategies exhibit better performance in terms of round-trip time and jitter

path occupation ratio

average throughput and so on.

关键词

Keywords

references

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