Department of Telecommunications, through Telecommunication Engineering Centre, organised a technical workshop titled “The D2D Frontier: Technology, Global Precedence and Indian Context” in New Delhi. The workshop brought together global experts, policymakers, and industry stakeholders to deliberate on the emerging Direct-to-Device (D2D) satellite communication technology and its relevance for India.
The event witnessed participation from institutions like IN-SPACe and the Wireless Planning & Coordination (WPC) Wing, highlighting India’s push toward next-generation communication technologies and universal digital connectivity.
Key Highlights
- Focussed on Direct-to-Device (D2D) and Non-Terrestrial Networks (NTN)
- Participation from global players like AST SpaceMobile and Vodafone Idea Limited
- Discussion held on global deployment models and technological advancements
- Emphasised on bridging connectivity gaps in remote areas
- Potential role in disaster communication and emergency response systems
- Reinforced India’s commitment to digital inclusion and innovation-led telecom policy
What is Direct-to-Device (D2D) Technology?
D2D is an emerging satellite communication technology that allows standard smartphones (4G/5G) to connect directly to satellites without requiring specialized satellite phones or additional hardware. It effectively turns satellites into “cell towers in space”, enabling seamless global connectivity.
Policy & Institutional Context
- Driven by DoT and TEC
- Supported by IN-SPACe for private sector participation
- Aligns with India’s push for:
- Innovation
- Public-private collaboration
- Future-ready telecom ecosystem
How D2D Works
1. Satellite Constellations
- Uses Low Earth Orbit (LEO) satellites (500–2000 km)
- Equipped with powerful antennas to receive signals from normal phones
2. Spectrum Integration
- Uses existing LTE/5G frequency bands
- Compatible with telecom operators’ spectrum
3. Seamless Handover
- Mobile automatically switches from terrestrial tower to satellite when out of coverage
4. Non-Terrestrial Network (NTN)
- Satellite acts as a relay
- Sends signals to ground stations to core telecom network
Key Features
- No special device required. It works on regular smartphones
- Low latency due to LEO satellites (compared to geostationary satellites)
- No need for physical towers in remote areas
- Integrated into global telecom standards (3GPP Release 17 & 18)
- Initially supports low-bandwidth services (SOS, messaging) now evolving toward voice/data
Significance
1. Bridging Digital Divide
- Provides connectivity in: Deserts, Remote rural regions, Mountains, Islands
2. Disaster Resilience
- Ensures communication even when terrestrial networks fail (earthquakes, floods, cyclones)
- Critical for rescue and emergency response operations
3. Universal Coverage
- Enables near 100% geographical connectivity
- Complements (not replaces) existing telecom infrastructure
4. Strategic Importance for India
- Supports Digital India & connectivity goals
- Reduces dependence on ground infrastructure
- Strengthens space-tech and telecom convergence