低軌衛(wèi)星通信中的波束跳變和頻率復(fù)用方法研究
2023年電子技術(shù)應(yīng)用第5期
王瀚萱,陳子博,孫耀華
(北京郵電大學(xué) 網(wǎng)絡(luò)與交換技術(shù)國家重點實驗室,北京 100876)
摘要: 面向廣域非均勻分布的業(yè)務(wù)需求,在多低軌衛(wèi)星移動波束覆蓋場景下,聯(lián)合考慮跳波束圖案設(shè)計、波束頻率分配和傳輸功率優(yōu)化,提出基于改進(jìn)粒子群算法的波束資源管理機制,通過系統(tǒng)級仿真平臺進(jìn)行了性能驗證。仿真結(jié)果表明,相比基于空間隔離角和基于優(yōu)先級的波束資源管理機制,在full buffer業(yè)務(wù)模型下,所提機制可顯著提升用戶信干噪比和系統(tǒng)容量,且頻率復(fù)用因子越低系統(tǒng)容量越高。
中圖分類號:TN929.5
文獻(xiàn)標(biāo)志碼:A
DOI: 10.16157/j.issn.0258-7998.233990
中文引用格式: 王瀚萱,陳子博,孫耀華. 低軌衛(wèi)星通信中的波束跳變和頻率復(fù)用方法研究[J]. 電子技術(shù)應(yīng)用,2023,49(5):24-29.
英文引用格式: Wang Hanxuan,Chen Zibo,Sun Yaohua. Study on beam hopping and frequency reuse in LEO satellite communication[J]. Application of Electronic Technique,2023,49(5):24-29.
文獻(xiàn)標(biāo)志碼:A
DOI: 10.16157/j.issn.0258-7998.233990
中文引用格式: 王瀚萱,陳子博,孫耀華. 低軌衛(wèi)星通信中的波束跳變和頻率復(fù)用方法研究[J]. 電子技術(shù)應(yīng)用,2023,49(5):24-29.
英文引用格式: Wang Hanxuan,Chen Zibo,Sun Yaohua. Study on beam hopping and frequency reuse in LEO satellite communication[J]. Application of Electronic Technique,2023,49(5):24-29.
Study on beam hopping and frequency reuse in LEO satellite communication
Wang Hanxuan,Chen Zibo,Sun Yaohua
(State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China)
Abstract: Facing wide-area and non-uniformly distributed service requirements, this paper proposes a beam resource management scheme based on improved particle swarm optimization, which considers the joint optimization of beam hopping pattern design, beam frequency allocation and power allocation, in the scenario of multiple LEO satellites with moving beam cells. By system-level simulation, its performance is verified. Specifically, compared with beam resource management schemes based on spatial isolation angle and priority, results show that this proposal can significantly improve user SINR and system capacity under full-buffer service model, and lower frequency reuse factor results in higher system capacity.
Key words : LEO satellite;beam hopping;frequency reuse
0 引言
相比高軌衛(wèi)星通信,低軌衛(wèi)星通信由于時延、路徑傳播損耗、發(fā)射成本等方面的優(yōu)勢,成為6G時代的重要組成。得益于軟定義通信載荷,低軌衛(wèi)星可根據(jù)輸入指令控制多波束靈活跳變,然而,相對衛(wèi)星的廣域覆蓋范圍,衛(wèi)星波束數(shù)量、可用頻率、功率相對受限。為實現(xiàn)波束資源和空間非均勻分布的業(yè)務(wù)需求的良好匹配,波束資源管理至關(guān)重要,其包括跳波束圖案設(shè)計、波束頻率復(fù)用等。
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作者信息:
王瀚萱,陳子博,孫耀華
(北京郵電大學(xué) 網(wǎng)絡(luò)與交換技術(shù)國家重點實驗室,北京 100876)
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