Section: 7.1 Services and Functions
Content: 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).