Channel measurement techniques in discontinuous reception scenarios
摘要
說明書
For example, a DRX configuration may result in the UE having a scheduled DRX inactive state during which the base station may transmit periodic CSI-RSs. The UE, based on the DRX configuration, may skip monitoring of one or more CSI-RSs, and turn on receive components for scheduled DRX ON-durations during which UE may monitor for transmissions from the base station. The base station, based on the DRX configuration, may transmit one or more downlink communications to the UE during the DRX ON-durations, where the downlink communications may include a demodulation reference signal (DMRS) for use by the UE in demodulating the downlink transmissions. The UE may measure the one or more channel quality metrics, and compare a current channel quality metric to a prior channel quality metric. In some cases, if the change in the one or more channel quality metrics exceeds a threshold, the UE may determine to be in the limited active mode for a subsequent CSI-RS transmission. The UE may then measure channel state information based on the subsequent CSI-RS transmissions, and provide a channel state feedback report to the base station that may be used to set transmission parameters for subsequent communications between the UE and base station.
