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Channel measurement techniques in discontinuous reception scenarios

專利號
US11503489B2
公開日期
2022-11-15
申請人
QUALCOMM Incorporated（US CA San Diego）
發(fā)明人
Pranay Sudeep Rungta; Shailesh Maheshwari; Sanjana Vijaykumar Kalyanappagol; Ankit Verma
IPC分類
H04W76/28; H04W24/10; H04B17/318; H04B7/06; H04W72/04; H04L5/00; H04B17/336
技術(shù)領(lǐng)域
ue,drx,channel,csi,may,in,be,reception,or,mode
地域： CA CA San Diego

摘要

Methods, systems, and devices for wireless communications are described for configuring a user equipment (UE) for reference signal measurement while operating according to a discontinuous reception (DRX) configuration. The DRX configuration may include periodic DRX ON-durations, during which the UE is to be in an active mode for reception and transmission of signals, and between which the UE may transition to a low-power inactive mode. One or more reference signals may be scheduled for transmission by the base station during periods in which the UE may be in the inactive mode, and the UE may skip monitoring one or more of the reference signals while in the inactive mode. For one or more reference signal occasions, the UE may determine, based at least in part on a change in a channel quality metric, to be in a limited active mode in order to measure the reference signal.

說明書

Additionally or alternatively, the UE may maintain a counter of skipped reference signal measurements, and may determine to be in the limited active mode for a subsequent CSI-RS transmission based on a state of the counter. For example, if the UE has skipped more than a threshold number of reference signal measurements, and the change in the one or more channel quality metrics exceeds a threshold value, the UE may determine to be in the limited active mode for a subsequent CSI-RS transmission. In some cases, the threshold value for the change in channel quality metrics may be dependent upon the value of the counter of skipped reference signal measurements. For example, the threshold value for the change in channel quality metrics may be lowered as more reference signal measurements are skipped. Further, in some cases if the change in channel quality metrics exceeds an upper limit, the UE be in the limited active mode to measure a next CSI-RS irrespective of the value of the counter. After performing a CSI-RS measurement, the UE may reset the counter of skipped reference signal measurements back to an initial value (e.g., zero).

權(quán)利要求

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