6G Won’t Fix Coverage — Here’s Why Technology Alone Can’t Solve It

India is moving towards 6G — but will it actually fix coverage?

In this video, I explain why coverage, especially in low-frequency bands, cannot be solved by technology alone. The real limitation is not 5G or 6G — it’s physics and device constraints.

From uplink power limits to modulation trade-offs, and from 5Gi experiments to 6G promises — this video breaks down why these approaches deliver limited real-world benefits in India.

⏱️ Timestamps

00:00 – 6G vs Reality: The Core Question
00:27 – Technology vs Structural Challenges
01:23 – Why Coverage Matters in Low Bands
02:25 – What 5Gi Tried (LMLC Concept)
03:50 – Why Physics Limits Coverage
04:34 – Uplink vs Downlink Explained
05:12 – Why Phones Limit Coverage (~23 dBm)
06:17 – Signal-to-Noise Ratio & Distance
07:20 – Coverage vs Speed Trade-off
07:27 – Why 5Gi Failed
08:34 – Peak vs Average Power (TDD Insight)
09:36 – FR1 vs FR2 Explained
10:37 – Why Trade-offs Fail in Low Bands
11:44 – Capacity Loss vs Coverage Gain
13:23 – 6G & Device Constraints
13:59 – Full Duplex Explained
15:36 – Why Full Duplex Fails in Low Bands
16:44 – High vs Low Frequency Reality
17:29 – Multiple Towers, One Device Problem
18:42 – Phase Alignment Challenge
19:03 – Why Innovation Hits a Wall
19:14 – The Real Solution: Spectrum Planning

📌 Key Insights

Coverage is uplink-limited, not tower-limited
Phones have hard constraints: power (~23 dBm) and antenna limitations
Extending coverage requires sacrificing spectral efficiency
5Gi attempted this — but trade-offs were too costly in low bands
The same limitations apply to many 6G ideas
High-frequency bands behave differently due to bandwidth and attenuation
Technology alone cannot overcome these constraints

👉 The real answer lies in:

Better spectrum planning
Contiguous low-band allocation
Smarter use of uplink (SUL)
Reducing fragmentation

🔗 Reference Video:

5Gi का सच—आसान भाषा में समझें: फोन पर Impact क्यों नहीं? - https://youtu.be/rDu-dIVJw1Y?si=hcMTRpW86xvIfXJz

⚠️ Disclaimer:
This video is for educational and analytical purposes. All views are based on independent analysis of telecom technologies and publicly available information.

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Видео 6G Won’t Fix Coverage — Here’s Why Technology Alone Can’t Solve It канала Parag Kar