d mode: the UE only acts according to the network config- uration and makes an autonomous decision only in case the radio link starts to fail. This means that whatever the UE does is configured by the network: which frequencies to measure, the reporting triggers, thresholds and hysteresis, and the type of measurement reporting (i.e. one-shot, event-triggered, and event-triggered periodic or periodic). The network can utilize the UE measurement result in various ways (e.g. for generic con- nection control purposes), but most typically the measurement information is used for triggering handovers or triggering other measurements that can lead to handovers. The UE measurement model in NR is more complicated than in LTE due to the beam measurements: though the beam measurements are first processed and filtered in L1 7.7 The RRC Protocol Table 7.6 Measurement events in NR RRC. Measurement event Example use case A1: Serving cell > threshold Deactivating (e.g. neighbor cell or inter-RAT) measurements since current serving cell is sufficient A2: Serving cell < threshold Activating (e.g. neighbor cell or inter-RAT) measurements since current serving cell may become insufficient A3: Neighbor cell + offset > SpCell Triggering (intra-frequency) handover to neighbor cell A4: Neighbor cell > threshold Considering neighbor cell as HO target or triggering further measurements A5: SpCell < threshold1 AND Neighbor Triggering (inter-frequency) handover to neighbor cell cell > threshold2 A6: Neighbor cell + offset > SCell Triggering SCell change or release B1: Inter-RAT neighbor cell > threshold Considering inter-RAT neighbor as inter-RAT HO candidate B2: SpCell < threshold1 AND Inter-RAT Triggering (inter-RAT) handover to neighbor cell neighbor cell > threshold2 (the details of which are left to the UE implementation), there is additional L2 process- ing to consolidate the input from (potentially) multiple beams and select the best beam, after which there is still L3 filtering (to smoothen the instantaneous variations in the measure