3GPP 38.300 v19.3.0 — the document's own text
7.2 Protocol States
Taught in 6. The three states a device sits in (TSG RAN — the group that specifies the radio, in depth), 2. The six working groups and the line between them (TSG RAN — the group that specifies the radio, overview), 5. The layers a packet falls through, and the three states a device sits in (TSG RAN — the group that specifies the radio, overview), 3. What NR is, read off the document itself (TSG RAN — the group that specifies the radio, quick start).
RRC supports the following states which can be characterised as follows:
- RRC_IDLE:
- PLMN selection;
- Broadcast of system information;
- Cell re-selection mobility;
- Paging for mobile terminated data is initiated by 5GC;
- Transfer of MBS broadcast data to the UE over MRB(s);
- DRX for CN paging configured by NAS.
- RRC_INACTIVE:
- PLMN selection;
- Broadcast of system information;
- Cell re-selection mobility;
- Paging is initiated by NG-RAN (RAN paging);
- RAN-based notification area (RNA) is managed by NG- RAN;
- DRX for RAN paging configured by NG-RAN;
- 5GC - NG-RAN connection (both C/U-planes) is established for UE;
- The UE Inactive AS context is stored in NG-RAN and the UE;
- NG-RAN knows the RNA which the UE belongs to;
- Transfer of MBS multicast/broadcast data to the UE over MRB(s);
- Transfer of unicast data and/or signalling to/from the UE over radio bearers configured for SDT.
- RRC_CONNECTED:
- 5GC - NG-RAN connection (both C/U-planes) is established for UE;
- The UE AS context is stored in NG-RAN and the UE;
- NG-RAN knows the cell which the UE belongs to;
- Transfer of unicast data to/from the UE;
- Transfer of MBS multicast/broadcast data to the UE over MRB(s);
- Network controlled mobility including measurements.