5G演进：网络控制直放站

doi:10.11959/j.issn.1000-0801.2022047

电信科学 ›› 2022, Vol. 38 ›› Issue (9): 169-176.doi: 10.11959/j.issn.1000-0801.2022047

5G演进：网络控制直放站

张楠¹^,², 栗子阳¹^,², 李儒岳¹^,², 曹伟¹^,²

¹ 移动网络和移动多媒体技术国家重点实验室，广东深圳 518055
² 中兴通讯股份有限公司，广东深圳 518057

修回日期:2022-08-10 出版日期:2022-09-20 发布日期:2022-09-01
作者简介:张楠（1990－），男，移动网络和移动多媒体技术国家重点实验室研究员，中兴通讯股份有限公司工程师，主要研究方向为无线信道建模、NOMA、MIMO、NTN通信网络、超材料及应用等
栗子阳（1992－），男，移动网络和移动多媒体技术国家重点实验室研究员，中兴通讯股份有限公司工程师，主要研究方向为非正交多址接入、两步法随机接入、频谱共存共享技术等
李儒岳（1977－），男，移动网络和移动多媒体技术国家重点实验室研究员，中兴通讯股份有限公司无线标准预研总监、RAN标准项目总经理, 主要研究方向为 MIMO、mmWave、RIS、AI/ML等
曹伟（1977－），女，移动网络和移动多媒体技术国家重点实验室研究员，中兴通讯股份有限公司高级工程师、技术预研无线资深专家，主要研究方向为无线通信中的物理层技术，研究场景聚焦于非陆地通信网络、可配置智能表面等

5G-Advanced: network-controlled repeater

Nan ZHANG¹^,², Ziyang LI¹^,², Ruyue LI¹^,², Wei CAO¹^,²

¹ State Key Laboratory of Mobile Network and Mobile Multimedia Technology, Shenzhen 518055, China
² ZTE Corporation, Shenzhen 518057, China

Revised:2022-08-10 Online:2022-09-20 Published:2022-09-01

摘要/Abstract

摘要：

射频直放站在 2G、3G 和 4G 的部署均用于增强蜂窝网络的覆盖。虽然传统射频直放站提供了一种经济高效的方法用于扩展网络覆盖范围，但其仅能依照固定配置对信号执行放大和转发操作，无法依照网络调度和控制对该行为进行灵活调整。介绍了 5G 演进中的网络控制直放站，作为对传统射频直放站的增强，网络控制直放站具有从网络侧接收针对直放站控制信息的能力，并依据此信息以更有效的方式执行其放大和转发操作，包括实现信号在空间域的定向增强、直放站的动态使能和简化的网络集成。

关键词: 网络控制直放站, 直放站控制信息, 5G演进

Abstract:

Radio frequency (RF) repeaters have been deployed in 2G, 3G and 4G to improve the coverage of cellular system.While it is treated as a cost effective solution to extend the network coverage, conventional RF repeaters simply perform amplify-and-forward operation based on the set-up without the capability of doing flexible adjustments based on control and scheduling indication from network.An overview on the new study item in 5G-Advanced was given, i.e.network-controlled repeater.As an enhancement over conventional RF repeaters, network-contrdled repeater will enable the repeater to receive and process repeater control information from the network and perform its amplify-and-forward operation in a more efficient manner including the directive forwarding of the signal, dynamic on-/off of transmissions and receptions, and simplified network integration.

Key words: network-controlled repeater, repeater control information, 5G-Advanced

中图分类号:

TP393

张楠, 栗子阳, 李儒岳, 曹伟. 5G演进：网络控制直放站[J]. 电信科学, 2022, 38(9): 169-176.

Nan ZHANG, Ziyang LI, Ruyue LI, Wei CAO. 5G-Advanced: network-controlled repeater[J]. Telecommunications Science, 2022, 38(9): 169-176.

图/表 7

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表1

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参数	配置
布局	蜂窝宏基站（ISD（intersite distance）= 500 m）
载波	30 GHz
	宏基站-用户：5GCM UMa
信道	宏基站-直放站：5GCM UMa
	直放站-用户：UMi-Street canyon
	宏基站：40 dBm
发射功率	直放站：33 dBm
	终端：23 dBm
	宏基站：
	● 共256 Tx /Rx 天线阵子，结构为：(M, N, P, M_g, N_g) = (4, 8, 2, 2, 2)
	● (d_H, d_V) = (0.5, 0.5)λ.(d_g,H,d_g,V) = (4.0, 2.0)λ
	直放站：
天线配置	● 共128 Tx /Rx天线阵子，结构为：(M, N, P, M_g, N_g) = (4, 8, 2, 1, 2)
	● (d_H, d_V) = (0.5, 0.5)λ.(d_g,H,d_g,V) = (4.0, 2.0)λ
	终端：
	● 共32 Tx /Rx天线阵子，结构为：(M, N, P, M_g, N_g) = (2, 4, 2, 1, 2), d_H=d_V=0.5λ
	● (M_g, N_g) = (1, 2); Θ_mg,ng=90°; ?_0,1=?_0,0+180°; (d_g,H, d_g,V)=(0,0)
用户分布	室外均匀分布
业务类型	Full-buffer
注： M_g指天线阵列一列所用子阵（panel）个数 N_g指天线阵列一行所用子阵（panel）个数d_g,H指子阵（panel）间水平间距；d_g,V.指子阵（panel）间垂直间距；N:指一个子阵中所含天线阵子的列数；M: 指一个子阵中单列所含同极化振子数；d_H指天线振子间水平距离 d_V指天线振子间垂直距离；P 表示极化，P =1 天线阵列单极化 P=2 天线阵列双极化；(?_mg,ng, Θ_mg,ng)用来指示第 (mg, ng)个天线子阵的朝向，其中?_mg,ng是该子阵的方位角（array bearing angle） Θ_mg,ng是该子阵下倾角（array downtilt angle）。

5G演进：网络控制直放站

5G-Advanced: network-controlled repeater

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