面向电力业务质量保障的NR-U与Wi-Fi频谱共享  

NR-U and Wi-Fi spectrum sharing for quality guaranteeing of power services

作　　者：刘峻朋 夏玮玮[1] 刘晗 修成林 燕锋[1] 沈连丰[1] LIU Junpeng;XIA Weiwei;LIU Han;XIU Chenglin;YAN Feng;SHEN Lianfeng(National Mobile Communication Research Laboratory of Southeast University,Nanjing 210096,China;State Grid Shandong Electric Power Company,Jinan 250001,China;Jinan Power Supply Company,State Grid Shandong Electronic Power Company,Jinan 250012,China)

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096 [2]国网山东省电力公司,山东济南250001 [3]国网山东省电力公司济南供电公司,山东济南250012

出　　处：《电信科学》2023年第7期11-22,共12页Telecommunications Science

基　　金：国家电网有限公司科技项目(No.520601220022)。

摘　　要：为了缓解5G授权频谱资源短缺的问题,使用非授权频谱成为重要的解决方案。随着电力终端的大规模接入,面向电力业务保障的NR-U(NR in unlicensed spectrum)与Wi-Fi频谱共享成为重要的研究热点。首先,提出了一种NR-U上行传输机制,在保障Wi-Fi用户平均速率的同时实现了电力业务终端的数据上行传输。此外,还提出了联合传输时间和子载波分配(joint transmission time and subcarrier allocation,TTSA)的资源优化算法,以保障各类型电网业务的服务质量(quality of service,QoS),并最大化终端的总速率。将该优化问题解耦,使用近端策略优化(proximal policy optimization,PPO)为终端分配子载波。仿真结果表明,与已有算法相比,提出的TTSA资源优化算法在保障电力业务QoS和最大化终端总速率方面性能优越。To alleviate the shortage of 5G licensed spectrum resources,using unlicensed spectrum has become an important solution.With the large-scale access of power terminals,NR-U and Wi-Fi spectrum sharing for power ser-vices quality guaranteeing has become an important research hotspot.Firstly,an NR-U uplink transmission mechan-ism was proposed,which ensured the average throughput of Wi-Fi users and realized the data uplink transmission of power service terminals.In addition,a resource optimization algorithm for joint transmission time and subcarrier al-location(TTSA)was proposed to ensure the quality of service(QoS)of various types of power services and maxim-ize the total throughput of terminals.The optimization problem was decoupled,and proximal policy optimization(PPO)was used to allocate subcarriers to terminals.The simulation results show that compared with the existing al-gorithms,the proposed resource optimization algorithm for TTSA has superior performance in guaranteeing the ser-vice quality of power services and maximizing the total terminals throughput.

关 键 词：非授权频谱 NR-U 深度强化学习 频谱共享 

分 类 号：TN929[电子电信—通信与信息系统]