Section: 5.3.14 Unified Access Control 5.3.14.1 General
Content: The purpose of this procedure is to perform access barring check for an access attempt associated with a given Access Category and one or more Access Identities upon request from upper layers according to TS 24.501[ Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3 ]  [23] or the RRC layer. This procedure does not apply to IAB-MT and NCR-MT. This procedure does not apply to L2 U2N Relay UE initiating RRC connection establishment or RRC connection resume upon reception of any message from a L2 U2N remote UE via SL-RLC0 or SL-RLC1 in accordance to 5.3.3.1a or 5.3.13.1a. After a PCell change in RRC_CONNECTED the UE shall defer access barring checks until it has obtained SIB1 (as specified in 5.2.2.2) from the target cell.