毫米波微波网络基于匹配算法的小区关联方法  

Cell Association Method Based on the Matching Algorithm for Millimeter-Wave Networks

作　　者：杨海竹 孙长印 吴维超 徐文军 YANG Haizhu;SUN Changyin;WU Weichao;XU Wenjun(School of Communication and Information Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China;China Mobile Communications Group Shaanxi Co.,Ltd.,Tongchuan,Shaanxi 727000,China)

机构地区：[1]西安邮电大学通信与信息工程学院,西安710121 [2]中国移动通信集团陕西有限公司,陕西铜川727000

出　　处：《计算机工程》2021年第8期210-215,223,共7页Computer Engineering

基　　金：国家自然科学基金(61801382,61871321);国家重大专项(2017ZX03001012-005);陕西省自然科学重点项目(2019JZ-06);陕西省重点产业链项目(2019ZDLGY07-06);西安邮电大学研究生创新基金(CXJJLY2018035)。

摘　　要：由于毫米波网络具有间歇性及较高的路径损耗,对于毫米波与微波基站联合组网系统,传统的小区关联方法会导致严重的负载失衡问题。为此,提出一种分布式双连接小区关联算法。该算法基于效用函数,采用匹配算法求解系统效用最大化下的最优关联,并保证产生帕累托最优和双向稳定解。同时为基站设置最小配额约束,以平衡毫米波与微波基站负载。此外,在匹配算法基础上选择边缘用户进行双连接,减少干扰并降低频繁切换导致的链路失误率。仿真结果表明,最小配额分配算法下全网和速率较传统最大信干噪比算法平均提升25.9%,双连接时全网和速率较单连接时提升明显。Millimeter-wave networks are limited by the high frequency of interrupts and the high path loss.For the network systems consisting of millimeter-wave networks and microwave base stations,the traditional cell association methods can cause serious load imbalance problems.To this end,a distributed cell association algorithm for dualconnection systems is proposed.The proposed association algorithm is based on the utility function,and the matching algorithm is used to find the optimal association that maximizes the utility of the system,so the found solutions satisfy bidirectional stability and Pareto optimality.In addition,each base station sets a minimum quota constraint,which effectively balances the loads between the millimeter wave and microwave base stations.Then based on the matching algorithm,edge users are selected for dual connection to reduce interference,decreasing the link error rate caused by frequent handovers.Simulation results show that under the minimum quota allocation algorithm,the proposed method improves the overall network sum rate by an average of 25.9%compared with the traditional maximum signal-tointerference and noise ratio(max-SINR)algorithm.Moreover,the proposed method provides a more significant increase in the overall network sum rate in the case of dual connection than single connection.

关 键 词：毫米波网络 双连接 最小额分配 负载均衡 帕累托最优 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]