5G动态异构场景下无线回程优化算法  

Wireless Backhaul Optimization Algorithm in 5G Dynamic Heterogeneous Scenarios

作　　者：张晖[1,2,3,4] 李风乐 赵海涛 孙雁飞[2] 朱洪波[1,3] ZHANG Hui;LI Fengle;ZHAO Haitao;SUN Yanfei;ZHU Hongbo(Jiangsu Key Lab ofWireless Communications,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;National Engineering Research Center of Communications and Networking,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Jiangsu Provincial Key Laboratory for Computer Information Processing Technology,Soochow University,Suzhou,Jiangsu 215006,China)

机构地区：[1]南京邮电大学江苏省无线通信重点实验室,南京210003 [2]南京邮电大学通信与网络技术国家工程研究中心,南京210003 [3]南京邮电大学教育部泛在网络健康服务系统工程研究中心,南京210003 [4]苏州大学江苏省计算机信息处理技术重点实验室,江苏苏州215006

出　　处：《计算机工程与应用》2020年第16期62-68,共7页Computer Engineering and Applications

基　　金：国家自然科学基金(No.61471203,No.61772286);江苏省“六大人才高峰”项目(No.RJFW-024);江苏省“青蓝工程”(2016);南京邮电大学“1311”人才计划(2015);通信与网络技术国家工程研究中心开放课题(No.TXKY17002);江苏省计算机信息处理技术重点实验室开放课题(No.KJS1518);国家科技重大专项(No.2012ZX03001008-003)。

摘　　要：为解决面向5G动态异构场景的无线回程问题,提出一种考虑时延抖动的无线回程优化算法。对5G动态异构场景下的时延和时延抖动问题进行了系统的分析,建立了优化指标,进一步构建了基本回程模型。在此基础上,考虑时延优化需求,引入时延约束构建改进模型1;考虑网络超载情况,松弛信道个数分配变量构建改进模型2,进而提出相应分层算法进行快速求解。仿真结果表明,与三类已有无线回程优化算法相比,所提算法具有更优的时延抖动性能。To solve the wireless backhaul problem in 5G dynamic heterogeneous scenarios,a wireless backhaul optimization algorithm considering delay jitter is proposed.Firstly,the problem of delay and delay jitter in 5G dynamic heterogeneous scenarios is systematically analyzed,and an optimization index is established.Then,a basic backhaul model is constructed.On this basis,considering delay optimization requirements,improved model 1 is constructed by adding delay constraints;considering network overload situations,improved model 2 is constructed by relaxing channel number allocation variables.Then,the corresponding hierarchical algorithms are proposed to quickly solve the above models.Simulation results show that the proposed algorithm has better delay jitter performance than three existing wireless backhaul optimization algorithms.

关 键 词：5G环境 动态异构网络 无线回程优化 时延 时延抖动 

分 类 号：TN915[电子电信—通信与信息系统]