Satellite Direct-to-Device Services (D2D-SAT) – Fundamentals Training by Tonex
From emergency messaging to broadband ambitions, direct-to-device satellite connectivity is reshaping how mobiles reach the sky. This course demystifies D2D concepts across LEO, MEO, and GEO, compares commercial approaches, and translates standards into practical engineering choices. You’ll learn how spectrum, waveforms, and device constraints shape service quality and coverage economics. Security is integral: D2D expands the attack surface from terrestrial cells to space assets, demanding robust authentication, encryption, and interference resilience. We examine jamming, spoofing, and signal fraud vectors, plus compliance obligations for lawful intercept and privacy—ensuring reliability, safety, and cybersecurity are engineered from the start.
Learning Objectives
- Understand service models for messaging, SOS, voice, and broadband
- Analyze LEO, MEO, GEO architectures for direct-to-mobile service
- Evaluate Doppler, latency, power limits, and device constraints
- Compare Apple/Globalstar, Starlink D2C, AST SpaceMobile, Lynk, Iridium
- Apply spectrum, waveform, and coverage trade-offs to real designs
- Embed security-by-design with strong key management and robust cybersecurity
Target Audience
- Satellite operators
- Telecom engineers
- Defense communications planners
- Regulators and spectrum managers
- Product managers and solution architects
- Cybersecurity Professionals
Program Modules
Module 1 – D2D Foundations
- D2D use cases and value
- Service models and tiers
- NTN terminology and scope
- Ecosystem and roles
- Performance KPIs overview
- Safety and reliability goals
Module 2 – Orbits and Links
- LEO/MEO/GEO characteristics
- Doppler, delay, mobility
- Beam shapes and dwell time
- Handover and beam steering
- Link budget core terms
- Availability and fade margins
Module 3 – 3GPP NTN Essentials
- NTN reference architecture
- NR/LTE NTN adaptations
- Random access procedures
- Timing advance strategies
- Paging and mobility flows
- NB-IoT/NR-RedCap options
Module 4 – Commercial Architectures
- Apple–Globalstar messaging
- Starlink Direct-to-Cell plan
- AST SpaceMobile macrocell
- Lynk cell-on-satellite model
- Iridium messaging and voice
- Comparative design trade-offs
Module 5 – Spectrum and Devices
- L-/S-/PCS/LTE-NR bands
- Coexistence and interference
- RF front-end constraints
- Antenna size and patterns
- Power, thermal, battery life
- Device certification paths
Module 6 – Deployment and Assurance
- Rural/disaster coverage models
- Regulatory and licensing basics
- Cross-border coordination needs
- SAR, safety, public warnings
- Security threats and controls
- Roadmaps to 5G-Advanced/6G
Ready to build confident, standards-aligned D2D strategies? Enroll now to translate NTN theory into practical design decisions, compare vendor roadmaps with rigor, and architect secure, resilient direct-to-device services with Tonex.