Section: 8.1 UE Identities
Content: In this clause, the identities used by NR connected to 5GC are listed. For scheduling at cell level, the following identities are used: - C-RNTI: unique UE identification used as an identifier of the RRC Connection and for scheduling; - CG-SDT-CS-RNTI: unique UE identification used for Configured Grant-based SDT in the uplink; - CI-RNTI: identification of cancellation in the uplink; - CS-RNTI: unique UE identification used for Semi-Persistent Scheduling in the downlink or configured grant in the uplink; - INT-RNTI: identification of pre-emption in the downlink; - MCS-C-RNTI: unique UE identification used for indicating an alternative MCS table for PDSCH and PUSCH; - P-RNTI: identification of Paging and System Information change notification in the downlink; - SI-RNTI: identification of Broadcast and System Information in the downlink; - SP-CSI-RNTI: unique UE identification used for semi-persistent CSI reporting on PUSCH. For power and slot format control, the following identities are used: - SFI-RNTI: identification of slot format; - TPC-PUCCH-RNTI: unique UE identification to control the power of PUCCH; - TPC-PUSCH-RNTI: unique UE identification to control the power of PUSCH; - TPC-SRS-RNTI: unique UE identification to control the power of SRS. During the random access procedure, the following identities are also used: - RA-RNTI: identification of the Random Access Response in the downlink; - MSGB-RNTI: identification of the Random Access Response for 2-step RA type in the downlink; - Temporary C-RNTI: UE identification temporarily used for scheduling during the random access procedure; - Random value for contention resolution: UE identification temporarily used for contention resolution purposes during the random access procedure. For NR connected to 5GC, the following UE identity is used at NG-RAN level: - I-RNTI: used to identify the UE context in RRC_INACTIVE. For UE power saving purpose, the following identities are used: - PS-RNTI: used to determine if the UE needs to monitor PDCCH on the next occurrence of the connected mode DRX on-duration; - PEI-RNTI: used to determine if the UE needs to monitor the associated PO. For IAB the following identity is used: - AI-RNTI: identification of the DCI carrying availability indication for soft symbols of an IAB-DU. For Network-Controlled Repeater the following identity is used: - NCR-RNTI: identification of the DCI carrying side control information. For MBS, the following identities are used: - G-RNTI: Identifies dynamically scheduled PTM transmissions of MTCH(s); - G-CS-RNTI: Identifies configured scheduled PTM transmissions of MTCH(s) scheduled with configured grant; - MCCH-RNTI: Identifies transmissions of MCCH and MCCH change notification. For sidelink, the following identities are used: - SL-RNTI: unique UE identification used for NR sidelink communication scheduling; - SL-CS-RNTI: unique UE identification used for configured sidelink grant for NR sidelink communication; - SL Semi-Persistent Scheduling V-RNTI: unique UE identification used for semi-persistent scheduling for V2X sidelink communication; - SL-PRS-RNTI: unique UE identification used for SL-PRS transmission scheduling on dedicated SL-PRS resource pool; - SL-PRS-CS-RNTI: unique UE identification used for configured sidelink grant for SL-PRS transmission on dedicated SL-PRS resource pool.