摘要:
提出了煤矿5G无线通信系统的基本架构：5G核心网、基带处理单元(BBU)、远端汇聚站(RHUB)及5G基站之间由5G承载网连接，实现各网元之间信令传输；井下采用5G基站及天线实现井下无线信号覆盖，基站通过RHUB进行汇聚后，与BBU相连并接入5G核心网。比较了用户面功能/移动边缘计算(UPF/MEC)下沉与独立专网2种5G核心网建设方案的优缺点；研究了5G核心网与BBU之间、BBU与RHUB之间、RHUB与5G基站之间的承载网，重点介绍了5G核心网与BBU之间承载网常用的光纤直连、切片分组网(SPN)及第五代固定网络(F5G)3种承载方式的特点及适用场景；给出了煤矿5G基站、5G终端及5G通信模组等设备的设计方案。结合5G通信技术特点和煤矿智能化发展需求，探讨了5G无线通信系统在煤矿的典型应用，如融合一体化通信、高带宽业务应用、智能工作面业务应用、矿山车辆远程控制或无人驾驶等。指出小型化行业5G核心网设计、矿用5G基站等设备的低功耗及本安化设计、700 MHz频段5G设备的井下应用以提升5G基站覆盖范围、矿用5G手机终端的定制及行业APP的开发、低功耗5G通信模组的开发、结合现场需求更多行业应用场景的深入挖掘等是煤矿5G无线通信系统进一步的优化方向。
Abstract:
The basic architecture of 5G wireless communication system in coal mine is proposed: 5G core network, base band unit (BBU), remote radio unit hub (RHUB) and 5G base station are connected by 5G bearer network to realize signaling transmission among network elements. Underground 5G base stations and antenna are used to realize underground wireless signal coverage. After the base stations are converged through a RHUB, they are connected to BBU and connected to the 5G core network. The advantages and disadvantages of two kinds of 5G core network construction schemes are compared, namely user plane function/mobile edge computing (UPF/MEC) sinking and independent private network. This paper studies the bearer networks between 5G core network and BBU, between BBU and RHUB, between RHUB and 5G base station. This study focuses on the characteristics and application scenes of the three bearing methods commonly used in the bearer network between the 5G core network and the BBU, namely the optical fiber direct connection, the slicing packet network (SPN) and the 5th generation fixed network (F5G). The design schemes of coal mine 5G base stations, 5G terminals and 5G communication modules are proposed. Combining the characteristics of 5G communication technology and the requirements of coal mine intelligence development, the typical applications of 5G wireless communication systems in coal mines are discussed, such as integrated communication, high-bandwidth service applications, intelligent working face service application, remote control of mining vehicles or unmanned driving, etc. It is pointed out the further optimization directions of the coal mine 5G wireless communication system, including the design of miniaturization industry 5G core network, the low-power and intrinsically safe design of coal mine 5G base stations and other equipment, the underground application of 5G equipment in the 700 MHz frequency band to improve the coverage of 5G base stations, the customization of coal mine 5G mobile terminals and the development of industry APPs, the development of low-power 5G communication modules, industry application scenes in combination with on-site needs, etc.
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