Cell B Number of SSBs configured for each frequency SMTC window periodicity (5,10,20,40,80,160 ms) Cell A Cell B SMTC window duration (1,2,3,4,5 ms) SMTC window periodicity*SSB transmission periodicity and SMTC window periodicity do not need to be the same window The quality in the cell is measured SSBs within SMTC window Figure 5.15 Example illustration of SSB and SMTC correspondence in NR [29]. SS-block-based RRM measurement timing configuration or SMTC is the measurement window periodicity/ duration/offset information for UE RRM measurement per-carrier frequency. For intra-frequency connected mode measurement, up to two measurement window periodicities, can be configured. For the idle mode mea- surements, a single SMTC is configured per carrier frequency. For interfrequency connected mode measure- ments, a single SMTC is configured per-carrier frequency. New Radio Access RF and Transceiver Design Considerations 701 Using the same RF transceiver for measuring neighbor-cell quality or other component carriers as well as transmitting/receiving data in the serving cell would make it possible to reduce implementation cost. Nevertheless, this would imply that data cannot be trans- mitted/received in the serving cell during measurement of other cells or component car- riers at different frequencies. In LTE, the UE data transmission in the serving cell is suspended during a measurement gap, providing the UE the opportunity to tune its RF transceivers to conduct neighbor-cell quality measurements or measurement of other component carriers at different frequencies. The concept of measurement gaps is used in NR; however, the measurements are conducted on SSBs and the measurement gap con- figurations have been improved compared to LTE. In LTE, the measurement gap length (MGL) is fixed such that at least one primary/secondary synchronization signal occasion can be observed within the gap. In LTE, the primary/secondary synchronization signals are transmitted every 5 ms; thus the MGL of LTE is 6 ms, allowing 0.5 ms for RF tu