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Method for reporting channel state information in wireless communication system, and device for same

專利號
US12075456B2
公開日期
2024-08-27
申請人
LG ELECTRONICS INC.（KR Seoul）
發(fā)明人
Jaehoon Chung; Haewook Park; Jiwon Kang
IPC分類
H04W72/56; H04W72/044; H04W72/0453; H04W72/542
技術(shù)領(lǐng)域
csi,ue,omission,may,uci,in,bwp,reporting,resource,be
地域： Seoul

摘要

Disclosed are a method for reporting channel state information in a wireless communication system, and a device for same.Specifically, a method for a user equipment (UE) to report channel state information (CSI) in a wireless communication system includes: receiving bandwidth part (BWP) configuration information related to a BWP; receiving information for activating a specific bandwidth part among one or more bandwidth parts based on the BWP configuration information; receiving a reference signal; calculating CSI based on the reference signal; and transmitting the CSI by omitting a part of the CSI in the activated specific bandwidth part, based on a priority rule, wherein the CSI includes information related with coefficients, and each of elements of the information related to the coefficients is classified as a first group and a second group based on a priority value, wherein the priority value is determined as an order in which a higher index and a lower index of indexes of a frequency domain related to the elements are sequentially crossed based on a predefined specific index, and wherein a priority of the first group is defined as being higher than a priority of the second group in the priority rule.

說明書

Two CSI latency classes (low latency class and high latency class) are defined in terms of CSI computation complexity. The low latency CSI is a WB CSI that includes up to 4 ports Type-I codebook or up to 4-ports non-PMI feedback CSI. The high latency CSI refers to CSI other than the low latency CSI. For a normal UE, (Z, Z′) is defined in a unit of OFDM symbols. Here, Z represents a minimum CSI processing time from the reception of the aperiodic CSI triggering DCI to the execution of the CSI reporting. Further, Z′ represents a minimum CSI processing time from the reception of the CSI-RS for channel/interference to the execution of the CSI reporting.

Additionally, the UE reports the number of CSIs which may be simultaneously calculated.

Table 8 below is related to the CSI reporting configuration defined in TS38.214.

TABLE 8 5.2.1.4 Reporting configurations The UE shall calculate CSI parameters (if reported) assuming the following dependencies between CSI parameters (if reported) LI shall be calculated conditioned on the reported CQI, PMI, RI and CRI CQI shall be calculated conditioned on the reported PMI, RI and CRI PMI shall be calculated conditioned on the reported RI and CRI RI shall be calculated conditioned on the reported CRI.

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