India missed leading the world in 4G. With 6G, it wants a different outcome. The Bharat 6G Alliance now has 90 members, and the country’s own spectrum roadmap for 6G is already out.
Must Know
What 6G is and why India wants it
- Definition6G is the next generation of mobile networks, after 5G, expected around 2030.
- PastIndia was a follower through 2G, 3G and 4G, adopting tech built by others.
- GoalWith 6G, India wants to help set the global standard, not just use it.
- Why it mattersBecause whoever sets the standard shapes how the whole world’s networks work.
The Bharat 6G Vision
- DocumentThe Bharat 6G Vision Document came out in March 2023.
- TargetIt aims to make India a global leader in 6G by 2030.
- ResearchBy April 2025, 111 research proposals on 6G were approved.
- How it helpsThis research lets Indian ideas feed into the global 6G standard.
Good to Know
The Bharat 6G Alliance
- MembersThe Bharat 6G Alliance (B6GA) has grown to 90 members.
- WhoIt brings together telecom operators, equipment makers, startups and researchers.
- GroupsIt runs seven working groups covering tech, spectrum, devices and outreach.
- Why it mattersBecause one forum lets all parts of the industry work toward one 6G goal.
The spectrum roadmap
- WhatThe spectrum roadmap maps which radio bands India will use for 6G.
- WhoThe DoT released it after consulting B6GA and industry.
- PurposeSpectrum is the raw resource networks need to carry data.
- Why it mattersBecause planning bands early helps India align with global 6G standards.
Building the tech testbeds
- TerahertzIndia funds a 6G Terahertz testbed at SAMEER, Kolkata.
- PartnersIIT Madras, IIT Guwahati and IIT Patna are consortium partners.
- OpticalAn Advanced Optical Communication testbed supports research too.
- DemonstrationThe terahertz testbed showed a high-speed link at IMC 2025.
- Why it mattersBecause testbeds let researchers try ideas before they reach real networks.
✅ Test Yourself
Work through a 5-question chain on Bharat 6G and Spectrum, then keep practising with a random Science & Technology question.
Great to Know
How India is shaping the 6G standard
- ITUIndia helped shape the ITU’s IMT-2030 framework, the international standard called 6G.
- AskIndia pushed for ubiquitous connectivity to be one of 6G’s six usage scenarios.
- StandardsThe TDIP scheme funds startups to join global bodies like 3GPP and ITU.
- Talent100 5G labs in academic institutions build a 6G-ready talent pipeline.
- Why it mattersBecause joining standards bodies lets Indian engineers help write the rules.
- So whatSo India moves from user to co-creator of the next mobile generation.
PYQ / Exam Angle
UPSC 2020: Visible Light Communication
- UPSC 2020UPSC and other competitive exams ask about newer communication tech. View this question
- Point testedThe exam checks how VLC works and what it can do.
- TrapA common wrong statement overstates VLC’s range or ignores its limits.
- LinkVLC is one example of how optical tech connects to modern communication.
Current Affairs / So What
Optical network testbed (Aug 2026)
- WhatDoT and C-DOT (Centre for Development of Telematics) signed a five-year deal to build an end-to-end optical network testbed. (Source: PIB)
- WhereThe testbed sits at the C-DOT campus in New Delhi. (Source: PIB)
- PurposeIt bridges the gap between lab-stage ideas and market-ready products. (Source: PIB)
- WhoIndian startups and industry can test their optical communication products here. (Source: PIB)
- Why it mattersBecause a real testing environment helps Indian optical tech reach the market faster. (Source: PIB)
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