Mining Industry 5G Communication System Construction and Management Specifications
1Key Takeaways
The "Construction and Management Specification for 5G Communication Systems in Coal Mines" (Standard No. NB/T 11645-2024) is an industry standard in the energy sector, published by CN-NB. This standard was released on September 24, 2024, and is scheduled to take effect on March 24, 2025. It provides guidelines for…
2Expert Interpretation
An in-depth interpretation of the NB/T 11645-2024 coal mine 5G communication system standard, covering system architecture design, explosion-proof equipment selection, network slicing technology application, installation acceptance specifications and operation and maintenance management requirements, and providing scenario-based implementation plans and performance indicator comparison tables for underground/open-pit coal mines.
Analysis of the core content of the standard
This standard systematically regulates the full life cycle management of coal mine 5G communication systems for the first time, focusing on solving key technical issues such as 5G base station deployment, service priority guarantee, and network reliability in underground explosion-proof environments. The main body of the standard contains 8 chapters of technical requirements and 4 types of appendices, forming a complete management system covering design-deployment-acceptance-operation and maintenance.
Comparison of key technical requirements
| Technical dimensions | Underground coal mines | Open-pit coal mines | Common requirements |
|---|---|---|---|
| Working frequency band | 700MHz-900MHz preferred | 1.9GHz-4.9GHz mainly | Mine safety certification is required |
| Base station spacing | 100-500m (video segment) | 400-1000m | Dynamic adjustment mechanism |
| Delay reliability | ≤[email protected]% | ≤[email protected]% | Dual-channel redundant design |
| Explosion-proof grade | Comply with GB/T3836.1-4 standard | Encapsulation type "m" supplement | |
Key points for implementation of typical business scenarios
1. Remote control of fully mechanized mining working face
It is necessary to configure 5G CPE dual-channel equipment. When using the 700MHz frequency band, the base station spacing is ≤250m to ensure:
- Uplink rate ≥ 20Mbps@95% probability
- End-to-end latency ≤ 20ms
- Video splicing service requires 500Mbps dedicated slices
2. Autonomous driving of transport vehicles
Open-pit coal mines need to achieve:
- Single cell supports 6-car formation
- Latency ≤ 100ms at a moving speed of 25km/h
- Centimeter-level high-precision map-assisted planning
Acceptance test specifications
The standard innovatively proposes a three-level testing system:
- Single-station acceptance: The peak rate must reach 90% of the nominal value
- Scenario acceptance: Actual measurement according to the indicators in Table 2/3
- Service acceptance: VoNR connection rate ≥ 99%
The test instruments must include 6 types of equipment such as test server and 5G terminal (see Table 5 for details)
Operation and maintenance management innovation
1. Dynamic relocation mechanism
To be completed within 72 hours as the mining face advances:
- Installation and commissioning of new sites (48 hours)
- Network optimization acceptance (24 hours)
2. Four-dimensional network management functions
Requirements:
- Topology visualization
- Slice-level monitoring
- Root cause analysis of faults
- Automated inspection
Recommendations for the implementation of the standard
1. Phased deployment strategy
| Phase | Key tasks | Period |
|---|---|---|
| Phase I | Core network + backbone transmission construction | 3-6 months |
| Phase II | Wireless coverage + remote control | 6-12 months |
2. Security redundancy design
Key services need to be configured with:
- Dual power supply (≥4 hours of battery life)
- Dual transmission routes
- Emergency communication plan