ased inter-frequency measurement, a measurement gap configuration is always provided if the UE only supports per-UE measurement gaps or if the UE sup- ports per-FR measurement gaps and any of the configured BWP frequencies of any of the serving cells are in the same FR of the measurement object. 274 Chapter 2 For an SSB-based intra-frequency measurement, a measurement gap configuration is always provided in the case where, other than the initial BWP, if any of the UE config- ured BWPs do not contain the frequency domain resources of the SSB associated with the initial DL BWP. In non-gap-assisted scenarios, the UE must be able to conduct measurements without mea- surement gaps. In gap-assisted scenarios, the UE cannot be assumed to be able to conduct measurements without measurement gaps. 2.6 UE and Network Identifiers An NR UE in the connected mode uses a number of network-assigned temporary identifiers in order to communicate to gNB and 5GC. Those identifiers, their descriptions, and their usage are summarized as follows [8]: C-RNTI: A unique UE identification used as an identifier of the RRC connection and for scheduling purposes. CS-RNTI: A unique UE identification used for SPS in the downlink or configured grant in the uplink. INT-RNTI: An identification of preemption in the downlink. P-RNTI: An identification of paging and SI change notification in the downlink. SI-RNTI: An identification of broadcast and SI in the downlink. SP-CSI-RNTI: Unique UE identification used for semi-persistent CSI reporting on PUSCH. The following identifiers are used for power and slot format control [8]: SFI-RNTI: An identification of slot format. TPC-PUCCH-RNTI: A unique UE identification to control the power of PUCCH. TPC-PUSCH-RNTI: A unique UE identification to control the power of PUSCH. TPC-SRS-RNTI: A unique UE identification to control the power of SRS. The following identities are used during random-access procedure [8]: RA-RNTI: An identification of the RAR message in the downlink. Temporary C-RNTI: A UE identification 