other beams' L1-RSRP measurements and the measured L1-RSRP of the best beam [14]. If a UE is configured with an NZP-CSI-RS-ResourceSet via RRC parameter repetition set to "on," it may assume that the CSI-RS resources within the NZP-CSI-RS-ResourceSet are trans- mitted with the same downlink spatial domain transmission filter, where the CSI-RS resources in the NZP-CSI-RS-ResourceSet are transmitted on different OFDM symbols. If repetition is set to "off," the CSI-RS resources within the NZP-CSI-RS-ResourceSet are transmitted with the same downlink spatial domain transmission filter. If the UE is configured with a CSI-ReportConfig and parameter reportQuantity is set to "cri-RSRP," or "none" and the CSI-ResourceConfig for channel measurement (RRC parameter resourcesForChannelMeasurement) contains a NZP-CSI-RS-ResourceSet that is configured with the higher layer parameter repetition and without the higher layer parameter trs-Info, the UE can only be configured with the same number (1 or 2) of ports with the higher layer param- eter nrofPorts for all CSI-RS resources within the set. If the UE is configured with the CSI-RS resource on the same OFDM symbol(s) as an SS/PBCH block, the CSI-RS and the SS/PBCH block are quasi-co-located with QCL TypeD, if applicable. Furthermore, the UE will not be configured with the CSI-RS in PRBs that overlap with those of the SS/PBCH block, and the same subcarrier spacing is used for both the CSI-RS and the SS/PBCH block [9]. 4.1.2.4 Tracking Reference Signals A UE must track and compensate time and frequency variations of its local oscillator in order to successfully receive downlink transmissions. The problem is exacerbated in higher radio frequencies. To assist the device in this task, a tracking reference signal can be config- ured. The TRS is not a CSI-RS, rather a TRS is a resource set consisting of multiple peri- odic NZP-CSI-RS. More specifically, a TRS consists of four single-port, density-3 CSI-RS located within two consecutive slots as shown in Fig. 4.7. The CRS-RS within the