基于最优纠缠度的量子移动通信6G网络小区软切换策略  

Cell Soft Handover Strategy for 6G Network of Quantum Mobile Communication Based on Optimal Entanglement Degree

作　　者：聂敏 寇文翔 卫容宇 杨光 张美玲[1] 孙爱晶 裴昌幸 Nie Min;Kou Wenxiang;Wei Rongyu;Yang Guang;Zhang Meiling;Sun Aijing;Pei Changxing(School of Communication and Informatiou Engincering,Xi'an Uniuersity of Posts&Telecommunications,xi'an,Shacrai 710121,China;School of Electronics anud Inuformation,Northucestern Polytechnical Uuiversity,Xi'an,Shaanri710072,China;State Key Laborutory of Iutegrated Service Netuworks,Xidian Umiversity,Xi'an,Shaanxi 710071,China)

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121 [2]西北工业大学电子与信息学院,陕西西安710072 [3]西安电子科技大学综合业务网国家重点实验室,陕西西安710071

出　　处：《激光与光电子学进展》2020年第15期230-236,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61971348);陕西省国际科技合作与交流计划(2015KW-013)。

摘　　要：在第六代移动通信网络(6G)中,为了解决量子移动终端在不同小区交叠区域内平稳越区切换问题,提出了基于最优纠缠度的软切换策略。通过建立移动终端Alice与当前小区A和目标小区B之间的纠缠度计算模型,分析了Alice在运动过程中,与不同小区纠缠度的变化趋势,求出最优纠缠度所对应的小区。仿真比较了硬切换与软切换的特性,结果表明,当Alice与A小区的距离增加时,两者间的纠缠度逐渐下降;当Alice逐渐靠近B小区时,Alice与目标小区B的纠缠度逐渐变大。若B小区为最优纠缠小区,在硬切换中会存在短暂的链路中断,而软切换可实现小区之间的平稳切换。证明了在6G组网中,采用最优纠缠软切换策略,能有效提高切换过程中的通信接通率。In the sixth generation mobile communication network(6G),in order to solve the problem of smooth handover of quantum mobile terminals in overlapping regions of different cells,this paper proposes a soft handover strategy based on optimal entanglement degree.By establishing a calculation model of the optimal entanglement degree between the mobile terminalAlice and the current cell A,and the target cell B,the change trend of entanglement between Alice and different cells is in the process of motion is analyzed,and the cell corresponding to optimal entanglement degree is obtained.Through simulation,the characteristics of hard handover and soft handover are compared.The results show that as the distance between Alice and A-cell increases,the degree of entanglement between them decreases gradually.As Alice gradually approaches Bcell,the entanglement degree between Alice and cell B increases.lf the B-cell is the optimal entangled cell,there will be a short link interruption during hard handover,and soft handover can achieve smooth handover between cells.It can be seen that in the 6G networking,the optimal entanglement soft handover strategy can effectively improve the communication connection rate during the handover process.

关 键 词：量子纠缠 最优纠缠度 软切换 移动通信 平稳切换 

分 类 号：TN929.53[电子电信—通信与信息系统]