在低地球轨道卫星网络中优化时间敏感的交通调度
1School of Information and Navigation, Air Force Engineering University, Xi'an 710003, China.
Sensors (Basel, Switzerland)
|July 30, 2025
概括
本研究介绍了一种软件定义网络 (SDN) 框架,用于在动态低地球轨道 (LEO) 卫星网络中管理时间敏感流 (TSF). 拟议的系统提高了网络吞吐量,并减少了关键数据传输的延迟.
科学领域:
- 网络工程 网络工程
- 卫星通信 卫星通信
- 计算机科学 计算机科学
背景情况:
- 低地球轨道 (LEO) 卫星网络面临着动态拓变化和资源限制,影响卫星间链路 (ISL).
- 传统的地面服务质量 (QoS) 方法对于LEO卫星环境的独特挑战是不够的,导致时间敏感流 (TSF) 的性能下降.
- 由于频繁的链路更换和资源竞争造成的LEO卫星网络的不稳定性,妨碍了对时间敏感数据的可靠传输.
研究的目的:
- 为了应对在动态的LEO卫星网络中为TSF提供可靠的QoS的挑战.
- 开发一种新的管理框架,使用专门为LEO卫星环境设计的软件定义网络 (SDN).
- 提高LEO卫星网络时间敏感流量传输的效率和性能.
主要方法:
- 开发了一个为LEO卫星量身定制的软件定义网络 (SDN) 管理框架.
- 实施了一种先进的队列管理和调度系统,灵感来自地面时间敏感网络.
- 纳入了差异化转发策略和基于优先级的分类,以加强交通管理.
主要成果:
- 拟议的框架大大提高了整体网络吞吐量.
- 数据包损失大大减少,提高了数据完整性.
- 保持了低延迟,对于时间敏感的应用程序至关重要.
- 该系统在LEO卫星网络中的时间敏感流量方面表现出最佳的性能.
结论:
- 基于SDN的管理框架有效地解决了LEO卫星网络的动态性质和资源限制.
- 先进的队列管理和调度系统提高了传输时间敏感流量的效率.
- 该研究通过模拟验证了拟议的方法,证实了其提高网络性能指标的能力.
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