低轨跳波束卫星网络的服务质量均衡与干扰抑制
QoS Balancing and Interference Suppression for LEO Beam-Hopping Satellite Networks
李童 1姚如贵 1樊晔 2左晓亚 1徐娟3
作者信息
- 1. 西北工业大学 电子信息学院,西安 710072
- 2. 西北工业大学 电子信息学院,西安 710072;西北工业大学 深圳研究院,深圳 518063
- 3. 长安大学 电子与控制工程学院,西安 710064
- 折叠
摘要
针对星间服务质量失衡和星间干扰问题,提出了一种低轨-跳波束卫星网络,通过星间服务质量均衡和干扰抑制提高了小区的服务质量.不同业务类型的小区存在优先级差异,任何小区在一个跳波束时间窗内至少应有一个时隙服务.对此,提出了用于卫星间小区分簇的小区质量均衡算法.由于多颗卫星共享频谱时严重的星间干扰降低了小区的服务质量,提出了动态干扰抑制算法.仿真实验结果表明,与最大仰角算法相比,小区质量均衡算法缩减了70%的星间服务质量差距,实现了服务质量均衡.与不抑制星间干扰的情况相比,动态干扰抑制算法确保星间干扰始终低于干扰阈值,能提高服务质量水平.
Abstract
To address the problems of quality of service imbalance and inter-satellite interference,a low earth orbitbeam-hopping satellite network is proposed,it can enhance the quality of service through inter-satellite quality of service balancing and interference suppression.Cells with different types of services have varying priority levels,and each cell should be allocated at least one-time slot in a beam-hopping time window.Therefore,a cell quality equalization algorithm to cluster inter-satellite cells is proposed.Since multiple satellites share the spectrum,severe inter-satellite interference diminishes cells'quality of service.Therefore,a dynamic interference suppression algorithm is introduced.Simulation results show that compared tothe maximum elevation angle algorithm,the cell quality equalization algorithm reduces the inter-satellite quality of service disparityby 70%and achieves quality of service balancing.Compared toscenarios without interference suppression,the dynamic interference suppression algorithm ensures that the inter-satellite interference is always below the interference threshold,therefore improving the quality of service levels.
关键词
跳波束技术/干扰抑制/服务质量均衡Key words
beam hopping technology/interference suppression/quality of service balancing引用本文复制引用
出版年
2024
NETL
NSTL
万方数据