矿用5G通信演进技术研究

李晨鑫

doi:10.13272/j.issn.1671-251x.2022090070

矿用5G通信演进技术研究

doi: 10.13272/j.issn.1671-251x.2022090070

李晨鑫^{1, 2, 3,}

1.
煤炭科学技术研究院有限公司, 北京　100013
2.
煤矿应急避险技术装备工程研究中心, 北京　100013
3.
北京市煤矿安全工程技术研究中心, 北京　100013

基金项目: 天地科技股份有限公司科技创新创业资金专项（2022-TD-ZD001，2022-2-TD-ZD001）；煤炭科学技术研究院技术创新基金项目（2021CX-I-09）。

详细信息

作者简介:
李晨鑫（1986—），男，河南永城人，副研究员，博士，研究方向为智能矿山通信技术，E-mail：ccrilichenxin@126.com

中图分类号: TD655
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- 被引次数: 0
出版历程
- 收稿日期: 2022-09-22
- 修回日期: 2023-02-23
- 网络出版日期: 2022-10-12

Research on mine 5G-advanced communication evolution technology

LI Chenxin^{1, 2, 3
,}

1.
CCTEG China Coal Research Institute, Beijing 100013, China
2.
Engineering Research Center for Technology Equipment of Emergency Refuge in Coal Mine, Beijing 100013, China
3.
Beijing Engineering and Research Center of Mine Safe, Beijing 100013, China

摘要

摘要: 矿用5G是智能矿山建设的基础，为满足智能矿山多样化的应用需求，需要依托5G通信演进技术推动矿用5G通信演进系统的实现。梳理了矿用5G技术研究及系统部署现状：矿用5G初步实现了音视频通话、高清视频分析、装备远程控制等应用，但存在终端形态单一、上行链路负荷较重、5G通信系统与定位系统分立建设等问题。分析了3GPP Release 17的5G通信演进技术在矿用5G通信中的适用性，指出RedCap轻量化终端技术、NR直连通信技术、NR定位技术将成为矿用5G通信演进的关键技术。研究了矿用5G通信演进关键技术：RedCap轻量化终端技术能够满足矿用无线传感器、单路无线传输的矿用视频监控设备、智能矿灯、智能穿戴设备的低功耗、低成本的多模态终端研发需求；NR直连通信技术应用于矿井自动驾驶车载终端与巷侧设备、应急通信中继设备，可满足矿井自动驾驶和应急通信的低时延、高可靠传输需求；NR定位技术应用于矿井通信定位一体化，可满足矿井通信定位系统融合的技术需求。提出了矿用5G通信演进系统架构，为建设矿用5G全连接矿井、支持多链路无线接入、实现通信感知一体化提供了方向。
- 5G /
- 智能矿山 /
- 矿井通信 /
- 5G通信演进 /
- 轻量化终端 /
- 直连通信 /
- NR定位
Abstract: The mine 5G is the foundation of intelligent mine construction. In order to meet the diversified application requirements of intelligent mine, it is necessary to promote the realization of mine 5G-advanced communication evolution system through 5G-advanced communication evolution technology. The current status of mine 5G technology research and system deployment is reviewed. The mine 5G has preliminarily realized audio and video call, HD video analysis, equipment remote control and other applications. However, there are some problems such as single terminal form, heavy uplink load, separate construction of 5G-advanced communication system and positioning system, etc. This paper analyzes the applicability of 5G-advanced communication evolution technology of 3GPP Release 17 in mine 5G-advanced communication. It is pointed out that RedCap lightweight terminal technology, NR direct connection communication technology and NR positioning technology will become the key technologies of mine 5G communication evolution. The key technologies of mine 5G-advanced communication evolution are studied. RedCap lightweight terminal technology can meet the research and development requirements of low-power consumption and low-cost multimode terminals of mine wireless sensors, single-channel wireless transmission mine video monitoring equipment, intelligent miner lamps and intelligent wearable devices. NR direct connection communication technology is applied to mine automatic driving vehicle-mounted terminal, roadway side equipment and emergency communication relay equipment. It can meet the requirements of low delay and high reliable transmission of mine automatic driving and emergency communication. NR positioning technology is applied to mine communication and positioning integration to meet the technical requirements of mine communication and positioning system fusion. This paper puts forward the architecture of mine 5G-advanced communication evolution system. The study provides the direction for building 5G fully connected mine, supporting multi-link wireless access and realizing the integration of communication and perception.
- 5G /
- intelligent mine /
- mine communication /
- 5G-advanced communication evolution /
- lightweight terminal /
- direct communication /
- NR positioning

HTML全文

图 1 直通链路Mode2的终端自主资源选择机制原理

Figure 1. Principle of UE autonomous resource selection mechanism of Sidelink Mode2

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图 2 直通链路帧结构

Figure 2. Subframe structures of Sidelink

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图 3 NR下行数据接收BWP与定位BWP切换原理

Figure 3. Switching principle between NR downlink data reception BWP and positioning BWP

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图 4 基于RTT的矿井NR定位原理

Figure 4. Principle of mine NR positioning based on RTT

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图 5 矿用5G通信演进系统架构

Figure 5. Architecture of mine 5G-advanced communication system

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表 1 3GPP Release 17物理层信道、信号与关键机制的技术方向

Table 1. Technical direction of physical layer channel, signal and key mechanism in 3GPP Release 17

技术方向	立项类型	技术特性
RedCap轻量化终端	新立项	RedCap终端的性能降低方案、早期识别机制、节能机制等
NR直连通信增强	演进	面向车联网、公共安全场景的节能的资源分配方案、非连续接收方案等
NR定位增强	演进	面向工业互联网的定位精度增强、时延缩减、基于请求的定位机制等
覆盖增强	新立项	上行控制/数据信道增强，随机接入Msg3增强
MIMO增强	演进	多波束、多传输资源集合增强，SRS及CSI增强等
52.6~71 GHz的高频段5G通信	新立项	高频段整体接入层机制设计
NB−IoT/LTE−MTC增强	演进	NB−IoT支持16QAM，定义LTE−MTC PDSCH调度时延等
NR动态频谱共享	演进	SCell到sPCell的跨载波调度等
XR评估	新立项	XR/AR应用业务模型、关键指标、评估方法和性能评估
NB−IoT/eMTC对NTN的支持	新立项	支持NB−IoT和eMTC的NTN整体架构
基于LTE的5G地面广播新频段	新立项	MBMS定义6/7/8 MHz带宽及MBSFN信号及信令

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表 2 RedCap轻量化终端性能要求

Table 2. Requirements of RedCap lightweight terminal capability

性能	常规终端	RedCap轻量化终端	成本缩减
最大带宽	100 MHz	20 MHz	30%以上
接收天线	4R	2R/1R	40%～60%
双工方式	FD−FDD	HD−FDD	10%以内
调制阶数	256QAM	64QAM	约6%

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