Wi-Fi 7技术及其矿井应用  

Wi-Fi 7 technology and its mine application

作　　者：姜玉峰 JIANG Yufeng(CCTEG China Coal Research Institute,Beijing 100013,China;Engineering Research Center for Technology Equipment of Emergency Refuge in Coal Mine,Beijing 100013,China;Beijing Engineering and Research Center of Mine Safe,Beijing 100013,China)

机构地区：[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

出　　处：《中国矿业》2024年第4期152-157,共6页China Mining Magazine

基　　金：天地科技股份有限公司科技创新创业资金专项资助(编号:2022-TD-ZD001)。

摘　　要：随着矿山智能化建设的持续推进,井下网络的部署规模和应用场景在不断扩展,对无线通信的速率、时延、可靠性等提出了更高的要求。Wi-Fi 7是下一代的无线通信技术,对应于最新的IEEE 802.11be协议标准,能够为井下网络建设提供全新的无线通信解决方案。面向应用部署,本文从速率增强、低时延保障、干扰抑制方面分析了Wi-Fi 7的技术特性及效果。通过采用更大带宽、更高阶调制以及多用户MIMO等策略,Wi-Fi 7能够实现速率的显著增强,达到30 Gbps的目标;通过引入多AP联合传输、多链路操作等机制,Wi-Fi 7能够形成可靠的低时延保障,达到低于5 ms的目标;通过利用前导码打孔、协同OFDMA、空间重用等技术,Wi-Fi 7能够建立强大的干扰抑制能力,满足复杂环境的使用需求。针对矿山智能化建设,提出了以矿井PON+Wi-Fi 7为代表的网络架构,以及数字孪生工作面、装备远程控制等应用,同时分析了Wi-Fi 7与50G PON融合、与5G/5G-Advanced共存、与各类Wi-Fi协同的发展前景。可以预见,Wi-Fi 7大规模商用之后,将成为低成本、高价值的智能矿山信息基础设施。With the continuous advancement of intelligent mining,the deployment scale and application scenarios of mine networks are expanding,which pose higher requirements for wireless communication in terms of rate,latency,and reliability.Wi-Fi 7,corresponding to the latest IEEE 802.11be protocol standard,is the next-generation wireless communication technology that provides a new wireless communication solution for mine network construction.In terms of application deployment,the technical characteristics and effects of Wi-Fi 7 are analyzed from the perspectives of rate enhancement,low-latency guarantee,and interference suppression.By adopting strategies such as wider bandwidth,higher-order modulation,and multi-user MIMO,Wi-Fi 7 achieves a significant rate enhancement,aiming to reach a target of 30 Gbps.Through the introduction of mechanisms such as Multi-AP joint transmission and multi-link operation,Wi-Fi 7 can provide reliable low-latency guarantee,aiming for a target of less than 5 ms.By utilizing techniques like preamble puncturing C-OFDMA,and spatial reuse,Wi-Fi 7 establishes strong interference suppression capabilities to meet the demands of complex environments.For intelligent mining construction,a network architecture represented by Mine PON+Wi-Fi 7 is proposed,along with applications such as digital twin working surfaces and remote equipment control.The integration of Wi-Fi 7 with 50G PON,coexistence with 5G/5G-Advanced,and collaboration with various Wi-Fi protocols are also analyzed in terms of future development prospects.It can be foreseen that after large-scale commercial use,Wi-Fi 7 will become a low-cost,high-value information infrastructure for intelligent mining.

关 键 词：矿井通信 Wi-Fi 7 速率增强 低时延保障 干扰抑制 智能矿山 

分 类 号：TD65[矿业工程—矿山机电]