Monday, 6 July 2020

A Technical Introduction to 5G NR RRC Inactive State

I looked at the RRC Inactive state back in 2017, but the standards were not completely defined. In the meantime standards have evolved and commercial 5G networks are rolling out left, right and centre. I made a short technical introduction to the RRC_INACTIVE state, comparing it with the 4G states in RRC and NAS. I also looked at some basic signalling examples and there are lots of relevant references at the end. Video and slides embedded below.

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1 comment:

Faisal said...

Nice intro Zahid. The way I see it is that UMTS PCH state is reborn in 5G NR with the name of inactive state with slight modifications. It would be interesting if you can post a comparison of PCH state in UMTS with RRC inactive in NR.