In this example, a DRX cycle 415 is configured at the UE with DRX active durations and DRX inactive durations. In this case, each of the CSI-RS arrivals 405 is in a scheduled DRX inactive period of the DRX cycle, and thus the UE may skip measurement of the CSI-RSs in each instance of CRS-RS transmissions until the UE is triggered to measure a CSI-RS (e.g., based on a counter of missed CSI-RS transmissions, a value a change in one or more channel quality metrics (e.g., whether ΔRSRP, ΔRSRQ exceed a predetermined threshold value), or any combinations thereof). In the example of FIG. 4, the CSI-RS arrivals 405 are relatively close to the end of corresponding scheduled DRX active mode durations. Thus, in this example, as indicated at 420, the UE may move to the limited active mode to measure CSI-1, and transmit a feedback report to the base station (e.g., via an uplink transmission of control information) based on the measured CSI. In some cases, the UE may turn off PDCCH decoding components, but not perform additional sleep activities (e.g., powering down one or more power amplifiers or baseband decoding components in a receive chain) until CSI-1 410 is measured, as indicated at 425. In some case, a time difference between the time 425 and a start or finish of the DRX active mode may be determined, and if it is within a predetermined time window of an end of a DRX active mode window, the UE may move to the limited active mode to make the measurement.
