基于干扰感知的多星协同跳波束资源分配

doi:10.11959/j.issn.1000-0801.2023161

Abstract

Abstract:

Beam hopping (BH) is a crucial technology in the low earth orbit (LEO) satellite system with limited beams number and uneven transmission requirements.However, the existing research only considers the resource allocation of a single LEO satellite, that is, the resource allocation scheme in which one satellite serves one ground area.However, the actual LEO satellite coverage is simultaneously covered by multiple satellites in multiple orbits.Existing schemes only consider the resource allocation of a single satellite, which will cause beam interference between satellites, resulting in a decrease in communication quality and throughput.In response to the above problems, an interference aware cooperative resource allocation scheme for LEO with beam hopping (IARA-BH) was proposed.The basic idea of IARA-BH was to improve the interference distribution and throughput of multi-satellite networks under the constraint of guaranteeing user requirements by coordinating beam interference between satellites.The experiment results show that compared with the single-satellite beam hopping resource scheduling scheme, the multi-satellite cooperative beam hopping resource scheduling scheme can improve the average signal to interference ratio (SIR) by 15.52%, and the system throughput can be increased by 5.72%.

Key words: LEO satellite, beam hopping, resource allocation

CLC Number:

TN927

Jinlong HU, Jihong LIU, Yiqing ZHOU, Huan CAO, Zifan LIU, Jiawei ZHAO, Jinhong YUAN. Multi-satellite cooperative beam hopping resource allocation based on interference perception[J]. Telecommunications Science, 2023, 39(8): 17-28.

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References 20

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参数	数值
系统总带宽	100 MHz
工作频率	20 GHz
卫星轨道高度	550 km
等效全向辐射功率	4 dBW/MHz
卫星发射天线增益图	Section 6.4.1 in 3GPP TR38.811
地面天线接收增益	39.7 dBi
半波束角	2°
波束半径	19.2 km
卫星发射天线最大增益	38.5 dBi
卫星个数	4
区域总半径	576.854 km
波位个数	1 590
单颗卫星的波束个数	8/16

Multi-satellite cooperative beam hopping resource allocation based on interference perception

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