Table of Contents Uplink Fundamentals: Definition, History, and Core Role Fiber: The High-Speed Wired Champion Microwave: The Flexible Wireless Bridge Satellite: The Global "Space Courier" Cellular (4G/5G): The Versatile "Hive Empire" 5.1 4G/5G Sub-Variants: From Low-Power to Ultra-High-Speed 5.2 Specialized Frequency Bands: The "Spectrum Key" for Custom Scenarios Technology Comparison: A Multi-Dimensional Overview Hybrid Deployment and Risk Assessment Conclusion: Choose You