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Version: 2.0 (Legacy)

LTE Connection

Configure cellular/LTE connectivity for extended range and internet access.

Overview​

LTE Connection provides:

  • Extended Range: Beyond radio link limitations
  • Internet Access: Connect to internet services
  • Backup Connectivity: Secondary communication path
  • Remote Monitoring: Monitor flights from anywhere

Hardware Requirements​

LTE Modules​

  • USB LTE Dongles: Plug-and-play cellular modems
  • HAT Modules: Raspberry Pi HAT LTE modules
  • Mini PCIe: Internal LTE modules
  • External Modems: Standalone cellular modems

SIM Cards and Service​

  • Data Plans: Cellular data service required
  • Coverage: Verify coverage in operating area
  • Speed Requirements: Adequate bandwidth for video
  • Roaming: International operation considerations

Configuration​

Hardware Setup​

  1. Install LTE hardware (USB dongle or HAT)
  2. Insert activated SIM card
  3. Configure cellular connection
  4. Test internet connectivity
  5. Optimize connection settings

Network Configuration​

  • APN Settings: Configure Access Point Name
  • Authentication: Username/password if required
  • IP Configuration: Static or dynamic IP
  • DNS Settings: Configure DNS servers

Connection Management​

Automatic Connection​

  • Boot Connection: Automatic connection on startup
  • Reconnection: Auto-reconnect on connection loss
  • Failover: Switch to LTE if WiFi fails
  • Priority Management: Connection priority settings

Manual Control​

  • Connection Control: Manual connect/disconnect
  • Network Selection: Choose specific networks
  • Bandwidth Control: Limit data usage
  • Status Monitoring: Connection status display

Data Usage Optimization​

Video Streaming​

  • Bitrate Limiting: Reduce video bitrate for cellular
  • Resolution Scaling: Lower resolution for LTE transmission
  • Compression: Increased compression ratios
  • Quality Modes: Cellular-optimized quality settings

Telemetry Priority​

  • Data Prioritization: Prioritize telemetry over video
  • Essential Data: Maintain critical telemetry
  • Batch Updates: Reduce update frequency
  • Compression: Compress telemetry data

Use Cases​

Long Range Operations​

  • Beyond Radio Range: Extend beyond radio limitations
  • Search and Rescue: Wide area coverage
  • Delivery Missions: Long-distance autonomous flights
  • Inspection Routes: Extended inspection missions

Remote Monitoring​

  • Multiple Operators: Remote pilot stations
  • Mission Control: Centralized mission management
  • Data Logging: Real-time data to servers
  • Live Streaming: Stream to online platforms

Backup Communications​

  • Redundancy: Backup for primary radio link
  • Emergency Communications: Emergency contact capability
  • Safety Monitoring: Remote safety oversight
  • Recovery Operations: Assist in aircraft recovery

Performance Characteristics​

Latency​

  • Higher Latency: Cellular networks have higher latency
  • Variable Delay: Latency varies with network conditions
  • Buffering: May require increased buffering
  • Real-time Impact: May affect real-time control

Bandwidth​

  • Variable Bandwidth: Depends on signal strength and network load
  • Data Caps: Monitor data usage against plan limits
  • Peak Times: Performance varies with network congestion
  • Coverage Areas: Performance varies by location

Security Considerations​

Data Encryption​

  • VPN Connection: Use VPN for secure connection
  • Encrypted Streams: Encrypt video and telemetry
  • Authentication: Strong authentication methods
  • Access Control: Limit access to authorized users

Network Security​

  • Firewall Configuration: Configure appropriate firewalls
  • Port Management: Close unnecessary ports
  • Update Management: Keep software updated
  • Monitoring: Monitor for security issues

Cost Management​

Data Plan Selection​

  • Unlimited Plans: Consider unlimited data plans
  • Pay-per-GB: Monitor usage carefully
  • Roaming Charges: Understand international charges
  • Speed Tiers: Balance speed vs. cost

Usage Optimization​

  • Data Monitoring: Track data usage in real-time
  • Quality Settings: Adjust quality to manage usage
  • Time-based Limits: Limit high-bandwidth operations
  • Compression: Use maximum compression settings

Integration Examples​

Hybrid Operation​

Primary Link: 2.4GHz Radio (Low Latency)
- Video: High quality local transmission
- Control: Real-time RC control
- Telemetry: Real-time flight data

Secondary Link: LTE (Extended Range)  
- Video: Compressed backup stream
- Telemetry: Mission data logging
- Control: Emergency backup control

LTE-Primary Setup​

Primary Link: LTE (Long Range)
- Video: Optimized cellular streaming
- Telemetry: Real-time via cellular
- Control: Cellular-based control

Local Link: WiFi Hotspot
- Ground Station: Local device connection
- Configuration: Local system access
- Backup: Local emergency control

Troubleshooting​

Connection Issues​

  • No Signal: Check coverage and antenna positioning
  • Slow Speeds: Verify data plan and network congestion
  • Frequent Disconnects: Check signal strength and stability
  • Authentication Errors: Verify APN and credentials

Performance Problems​

  • High Latency: Optimize for cellular characteristics
  • Poor Video Quality: Adjust compression and bitrate
  • High Data Usage: Monitor and optimize usage
  • Connection Drops: Implement robust reconnection logic

:::warning Data Costs LTE data can be expensive, especially for video streaming. Monitor usage carefully and consider unlimited plans for regular use. :::

:::info Legal Compliance Ensure LTE-connected drone operations comply with local aviation regulations regarding beyond visual line of sight (BVLOS) operations. :::

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