My Radio Technology beyond LTE - 38 series notes

38.300

Section 7 Radio Resource Controller (RRC)

7.1 Services and Functions

The main services and functions of the RRC sublayer over the Uu interface include:

• Broadcast of System Information related to AS and NAS;
• Paging initiated by 5GC or NG-RAN;
• Establishment, maintenance and release of an RRC connection between the UE and NG-RAN including:
  • Addition, modification and release of carrier aggregation;
  • Addition, modification and release of Dual Connectivity in NR or between E-UTRA and NR.
• Security functions including key management;
• Establishment, configuration, maintenance and release of Signalling Radio Bearers (SRBs) and Data Radio Bearers (DRBs);
• Mobility functions including:
  • Handover and context transfer;
  • UE cell selection and reselection and control of cell selection and reselection;
  • Inter-RAT mobility.
• QoS management functions;
• UE measurement reporting and control of the reporting;
• Detection of and recovery from radio link failure;
• NAS message transfer to/from NAS from/to UE.

The sidelink specific services and functions of the RRC sublayer over the Uu interface include:

• Configuration of sidelink resource allocation via system information or dedicated signalling;
• Reporting of UE sidelink information;
• Measurement configuration and reporting related to sidelink;
• Reporting of UE assistance information for SL traffic pattern(s).

To My New Radio (NR) notes