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A novel 3-D spatial temporal channel model for high mobility HAPS-based communications scenario
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作者 杨明川 Jiang Yicheng +1 位作者 Guo Qing Li Hanqing 《High Technology Letters》 EI CAS 2009年第4期356-362,共7页
A high altitude platform station (HAPS) based communications scenario for providing Intemet access and broadband multimedia services to the passengers on board of a high speed train (traveling up to 300km/h) is pr... A high altitude platform station (HAPS) based communications scenario for providing Intemet access and broadband multimedia services to the passengers on board of a high speed train (traveling up to 300km/h) is proposed. Regarding the addressed scenario, when the propagation link between HAPS and train is blocked by obstacles, a three-dimensional (3-D) geometrical single cylinder spatial-temporal channel model is presented, in which closed form, mathematically tractable space-time correlation functions are obtained. It shows that the correlation functions determined by the 3-D model are of significant difference with those of the conventional 2-D model. Based on the analysis model, the paper derives a realized simulation model using sum-of-sinusoids approach, and applies method of equal areas (MEA) and modified method of equal areas (MMEA) to determine the model parameters. The fitting performance of the simulation model with the analysis one is evaluated by two means-square error (MSE) performance criteria. Finally, numerical simulation results verify the mathematical analysis conclusion, when N ≥21, simulation model has an excellent fitness with the analysis one. 展开更多
关键词 high mobility high altitude platform station (HAPS) channel characteristic propagation scattering theory spatial temporal channel model angle of arrival
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6G技术中的空中接入网:进展与展望 被引量:2
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作者 杨睿哲 何若兰 +2 位作者 孙恩昌 张卉 张延华 《北京工业大学学报》 CAS CSCD 北大核心 2022年第11期1175-1188,共14页
空中接入网(aerial access network, AAN)具有抗毁性强、覆盖范围广、视距传播概率高的特点,与地面网络相结合能够缓解流量负载压力,提供全时空的连接与服务,可有效助力第六代移动通信网络(6th generation mobile networks, 6G)“万物... 空中接入网(aerial access network, AAN)具有抗毁性强、覆盖范围广、视距传播概率高的特点,与地面网络相结合能够缓解流量负载压力,提供全时空的连接与服务,可有效助力第六代移动通信网络(6th generation mobile networks, 6G)“万物智联”愿景的实现.因此,在分析AAN中的卫星通信和高空平台(high altitude platform station, HAPS)技术研究进展的基础上,研究了卫星通信在数据接入方面的应用以及HAPS在一体化网络架构中的作用,探究了卫星与HAPS两种技术对未来网络的影响以及进一步优化二者的潜在方法.最后,对卫星接入的数据碰撞问题和HAPS的缓存问题进行讨论分析,并从上述问题出发展望了卫星通信和HAPS技术的未来发展方向. 展开更多
关键词 第六代移动通信网络(6th generation mobile networks 6G) 卫星通信 高空平台(high altitude platform station HAPS) 空中接入网(aerial access network AAN) 空天地一体化 网络架构
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