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

專利號(hào)
US12075456B2
公開日期
2024-08-27
申請(qǐng)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

However, unlike the conventional method of reporting the linear combining (LC) coefficients for the spatial domain beam for each subband (SB), the enhanced Type II CSI codebook newly considered in NR is used in the frequency domain for the corresponding subbands. Therefore, since it is impossible to directly reuse the existing CSI omission operation, the CSI omission method needs to be newly considered according to the CSI codebook design.

<UCI Parameter Related Content>

UCI constituting the Type II CSI reporting may include parameters as shown in Table 13.

Table 13 shows examples of parameters constituting UCI part 1 and part 2. UCI part 1 may mean part 1 CSI, and UCI part 2 may mean part 2 CSI.

TABLE 13 Parameter Location Details/description RI UCI part 1 Ri∈{1, . . . , RIMAX} # NZ coefficients UCI part 1 # NZC summedacross layers, KNZ,TOT∈{1, 2, . . . , 2K0} Wideband CQI UCI part 1 Same as R15 Subband CQI UCI part 1

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