What is the difference of NB-iot for 4G and 5G?

Hello Experts.

What is the difference of NB-iot for 4G and 5G?
Is it similar or is there any critical difference?

One of the critical difference is that NB-IoT in 4g comes as a separate rat with different channels and it’s processing and in 5G it is same.
Therefore if you see any 36 series specs (LTE) it will have a different section for Lte and different section for NB-IoT but in 5G mMTC is one of the 3 use cases that’s it.

Unlike the cellular IoT options above, 5G has yet to be officially defined. Next Generation Mobile Networks Alliance (NGMN) is pushing for specs for it to be 40 times faster than 4G while supporting up to 1 million connections per square kilometer.

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