煤矿5G分布式MIMO组网技术研究（增刊）

根据煤矿井下的安全防爆要求，天线的射频发射功率受到严格限制，导致煤矿5G的基站部署密度显著高于地面场景。为了解决由此引发的交叉覆盖问题，本文提出了煤矿5G分布式MIMO组网技术，利用分布在不同位置的天线实现对用户数据的联合并行发送，不仅避免了由交叉覆盖导致的乒乓切换等负面效应，还提升了边缘区域的信号覆盖效果。在乌兰木伦煤矿的300米采煤工作面内，利用分布式MIMO组网技术实现了5G信号的无边界覆盖，上行速率不低于500Mbps，保障了煤机数据的实时有效传输。

Research on 5G distributed MIMO networking technology in coal mines

According to the safety and explosion-proof requirements of coal mines, the RF transmit power of antennas is strictly limited, resulting in a significantly higher deployment density of 5G base stations in coal mines than in ground scenarios. In order to solve the problem of cross coverage caused by this, this paper proposes a 5G distributed MIMO networking technology for coal mines, which uses antennas distributed in different locations to realize joint and parallel transmission of user data, which not only avoids negative effects such as ping-pong handover caused by cross coverage. It also improves the signal coverage effect in the edge area. In the 300-meter coal mining face of Ulan Mulun Coal Mine, the distributed MIMO networking technology is used to realize the borderless coverage of 5G signals, and the uplink rate is not less than 500Mbps, which ensures the real-time and effective transmission of coal machine data.