Explained: Why sub-6GHz 5G network is more important than the mmWave – Times of India

5G connectivity is probably the next big thing for connectivity and smartphones However, there’s a lot of confusion that has surrounded the entire concept of 5G connectivity.
However, the key confusion that has always been around being the two different types of 5G connectivity — the mmWave and sub-6GHz and a question that why chipmakers usually add both or just the sub-6GHz support in their SoCs, if they have to choose between the two 5G networks.
The basic answer to this question is to offer better coverage and seamless connectivity. But, that’s just one part of the equation. Let us explain.
mmWave vs sub-6GHz: The difference lies in the speed and range
Both millimetre wave or mmWave and sub-6GHz are 5G frequencies. However, both are different in their own way and have their own set of limitations and benefits. Unlike 4G networks, 5G connectivity uses a very wide range of frequencies and that’s why they are divided into two different categories — mmWave and sub-6GHz.
The mmWave uses the higher frequencies radio bands which range from 24GHz to 40GHz and it is the super-fast 5G which is capable of delivering insanely fast internet speeds.
On the other hand, the sub-6GHz 5G networks are limited up to 6GHz and range between 1GHz to 6GHz. The 3.5GHz frequency is the most common 5G frequency used across the world.
So, why it is a deal-breaker for chipmakers and smartphone brands? Well, it has been proven that higher frequencies aren’t always as practical and reliable in the real world. Take your broadband router for example. Most routers offer 2.4GHz and 5GHz bands and it is already clear that the former offer more range, while the latter has more speed, but has issues penetrating walls, resulting in a limited range.
The same applies to the two 5G networks. The mmWave has great speeds and the world is continuously pushing the limits to achieve faster internet speeds from mmWave. But, it has a limited range which makes it a compulsion for users to be in the vicinity of the mmWave 5G tower and be within the zone of that tower.
As expected, the sub-6GHz, as it has a lower frequency range, is limited in terms of speed, but offers a longer range which makes it more suitable for real-world implementation.
The range is always important as there’s no use in the speed if there’s no network available. The sub-6GHz uses the older 4G-like frequencies which results in better coverage.
This is the main reason why chipmakers and smartphone brands usually add both or sub-6GHz 5G network support in their chip or smartphones.