电讯技术2025，Vol.65Issue(6)：947-952,6.DOI:10.20079/j.issn.1001-893x.241029004
一种低轨卫星星座跳波束对地覆盖方法
A Low Earth Orbit Satellite Constellation Earth Coverage Method with Hopping Beam
摘要
Abstract
A system solution for ground coverage using hopping beams is proposed to address the issues of frequent inter-satellite handover and high handover signaling overhead in low Earth orbit(LEO)satellite constellations.By fully utilizing the characteristics of fixed coverage of hopping beams and satellite moving along orbit,key technologies such as dynamic deployment of virtual access points,continuous coverage method and inter-satellite switching method based on Earth coverage table are proposed to streamline system design,reduce inter-satellite handover frequency,and simplify handover signaling process as much as possible.The simulation results show that in typical scenarios,the number of satellites required for 24 h continuous coverage in a region can be reduced from over 15 000 to 210,the handover frequency can be reduced from 5.7 seconds per time to 392.3 seconds per time,and the handover signaling overhead can be reduced from 10 signaling times to 2 signaling times.关键词
低轨卫星星座/卫星通信/对地覆盖/星间切换Key words
low Earth orbit satellite constellation/satellite communication/ground coverage/inter-satellite handover分类
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孙杰..一种低轨卫星星座跳波束对地覆盖方法[J].电讯技术,2025,65(6):947-952,6.
