卫星-地面集成网络的在线服务功能链规划,以尽量减少端到端 (E2E) 延迟
Soohyeong Kim1, Joohan Park2, Jiseung Youn1
1Major in Bio-Artificial Intelligence, Department of Computer Science and Engineering, Hanyang University, Ansan 15588, Republic of Korea.
Sensors (Basel, Switzerland)
|November 27, 2024
概括
本研究介绍了软件定义网络和卫星地面集成网络的在线算法,以尽量减少端到端的延迟. 该方法有效地部署虚拟网络功能,并优化路由路径,以提高服务质量.
科学领域:
- 网络工程 网络工程
- 电信 电信服务 电信服务 电信服务
- 计算机科学 计算机科学
背景情况:
- 软件定义网络 (SDN) 和卫星地面集成网络 (SGIN) 对于下一代移动通信至关重要.
- 虚拟网络功能 (VNF) 在SGIN中的部署挑战可能会增加端到端 (E2E) 延迟,原因是不可预测的用户请求和有限的低地轨道 (LEO) 卫星资源.
研究的目的:
- 提出一个在线算法,用于在SGIN中共同部署VNF和路由路径形成.
- 通过选择性地部署必要的VNF来最大限度地减少E2E延迟,这是一个关键的服务质量 (QoS) 参数.
主要方法:
- 一个事件驱动的算法,通过部署必要的服务函数链 (SFC) 的VNF来响应用户请求.
- 根据地理坐标定义一个最小希望区域 (MHR),以减少基站的搜索空间,并最大限度地减少传播延迟.
- 沿着优化的路径部署VNF,以进一步减少E2E延迟.
主要成果:
- 拟议的算法与全球最佳算法具有很高的相似性,在E2E延迟和CPU功耗方面相似性高达97%.
- 对于E2E延迟和CPU功耗,均观察到大约90%的平均相似性.
结论:
- 开发的在线算法有效地减少了SDN-SGIN环境中的E2E延迟.
- 该方法为VNF部署和路由提供了近乎最佳的解决方案,增强了移动通信的QoS.
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