面向6G动态场景的可移动去蜂窝网络覆盖性能分析  

Coverage Performance Analysis of Movable Cell-Free Networks for 6G Dynamic Scenarios

作　　者：翟浩雅 郑家康 章嘉懿[1] 艾渤[1] ZHAI Haoya;ZHENG Jiakang;ZHANG Jiayi;AI Bo(Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学,中国北京100044

出　　处：《中兴通讯技术》2025年第1期20-27,共8页ZTE Technology Journal

基　　金：北京交通大学人才基金项目(2024XKRC085);中国博士后科学基金项目(2024M760195);中兴通讯产学研合作项目(IA20240709018)。

摘　　要：6G动态场景面临频繁切换、覆盖不均匀及信道快速变化等挑战,严重影响用户体验。去蜂窝网络通过分布式节点协作实现连续覆盖,可移动天线通过小尺度位移主动改变信道环境,两者已成为解决上述问题的使能技术。基于可移动去蜂窝网络系统,采用一种可实时调整天线辐射端口的可移动天线架构,通过动态适配机制以适应网络立体覆盖与高动态需求。通过构建信道相关性模型,表征移动速度对系统性能的影响机理,分析用户中断概率及网络中断速率的准确表达式,评估不同系统参数下的覆盖性能,并推导中断概率的近似闭式表达式,为6G移动通信技术的研究和工程实践提供参考。The sixth-generation dynamic scenarios face challenges such as frequent handovers,uneven coverage,and rapid channel variations,which severely affect the user experience.The cell-free network achieves continuous coverage through the cooperation of distributed nodes,and the movable antenna actively changes the channel environment via small-scale displacements,both of which have become enabling technologies to solve the above problems.This paper is based on the movable cell-free network system and adopts a movable antenna architecture that can adjust the antenna radiation ports in real time.It adapts to the requirements of network threedimensional coverage and high dynamics through a dynamic adaptation mechanism.By constructing a channel correlation model,the influence mechanism of moving speed on system performance is characterized,the accurate expressions of user outage probability and network outage rate are analyzed,the coverage performance under different system parameter settings is evaluated,and the approximate closed-form expression of outage probability is derived,which provides a reference for the research and engineering practice in the field of 6G mobile communication.

关 键 词：6G移动通信 去蜂窝大规模MIMO 可移动天线 网络中断速率 

分 类 号：TN9[电子电信—信息与通信工程]