基于弹性云无线接入网的协同传输技术  

Coordinated transmission in elastic cloud radio access networks

作　　者：陈禹[1,2] 杨秀清[1] 刘涌[1] 赵静雅[1] 王俊生 CHEN Yu1,2, YANG Xiu-qing1 , LIU Yong1 , ZHAO Jing-ya1 , WANG Jun-sheng2(1. School of Telecommunication Engineering, Beijing Polytechnic, Beijing 100176, China; 2. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, Chin)

机构地区：[1]北京电子科技职业学院电信工程学院,北京100176 [2]北京邮电大学信息与通信工程学院,北京100876

出　　处：《计算机工程与设计》2018年第6期1564-1569,共6页Computer Engineering and Design

基　　金：北京市教委面上基金项目(KM201710858003)

摘　　要：为解决5G移动通信的灵活、高效接入问题,通过结合云无线接入技术的集中化处理优势,研究一种以用户为中心的基于波束赋形的多基站协同传输方案。将协同传输方案设计解耦成波束赋形方向决策和基站功率分配两个子问题,分别利用信漏噪比最大化算法和注水算法进行求解,使得该协同传输方案能够动态适应用户的信道状况以及通信需求,提升网络服务效率。对提出方案进行性能仿真,仿真结果表明,该策略在总吞吐量及系统能量效率方面比传统的策略有显著提升。To solve the problem of flexible and efficient access for 5G mobile communication,a user-centered multiple base stations coordinated transmission method based on beamforming was researched by the combination of centralized processing advantages of cloud wireless access technology.The coordinated transmission was decoupled into two sub problems including beamforming direction decision and power allocation of base station.The maximization algorithm of signal-to-noise ratio（SNR）and water-filling algorithm were used to solve the problem respectively.The coordinated transmission method can dynamically adapt to the user’s channel status and communication needs,thereby enhancing the efficiency of network services.The performance of the proposed user-centered collaboration transmission method was simulated.The results show that the proposed method significantly improves the overall throughput and system energy efficiency compared with the traditional strategy.

关 键 词：云无线接入 波束赋形 协同传输 功率分配 信漏噪比 

分 类 号：TN929.5[电子电信—通信与信息系统]