| 摘要: |
| 5G标准中定义的指标明确可支持500 km/h移动速度，它是针对高铁设计的，对航空用户能否支持？有什么限制条件？对高速移动场景5G应用进行了技术研究。首先分析了高速运动对移动通信带来的主要挑战，然后通过多普勒频移和载波间干扰计算对5G的移动性设计进行了分析，最后提出通过优化调整5G的帧结构、参考信号设计以及增加新的模块和功能设计等方法解决多普勒频偏、超远距离覆盖问题，实现5G技术在航空高速移动场景中的应用。 |
| 关键词: 5G技术 高速移动场景 航空通信 |
| DOI： |
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| 基金项目: |
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| Research on 5G application problems in high-speed mobile scene |
| LI Tingli,WANG Yaotian,FU Yongming |
| (P.O.Box 2857,Beijing 100085,China) |
| Abstract: |
| As defined in UE.5G NR Release 15 launched by 3GPP,5G can support 500 km/h speed application for users.However,it is designed for high-speed railway.Can it support the aviation users or not?What are the limitations under the condition of extra 500 km/h？This paper explores the crucial problems and the main challenges of 5G being applied in the environment of high-speed scenario.Then,it analyzes the mobility design of 5G through calculating Doppler frequency bias and inter-carrier interference(ICI).Finally,it proposes the principal way to eliminate Doppler effect and enhance the large range cover through modifying signal frame structure,optimizing pilot symbols of 5G and adding some function module,etc.,so as to make it possible for 5G to be used in the high-speed aviation scenario. |
| Key words: 5G technology high-speed scenario aviation communication |
