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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(kāi)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(shuō)明書(shū)

Since the SCI information is included in the UCI part 2, the base station may not know its value before decoding UCI part 2 based on UCI part 1 information. However, in a situation of RI>1 where the CSI omission may be applied, as described in the ‘UCI parameter-related contents’, as index remapping according to the FD basis and LC coefficients in the frequency domain for each layer is performed, the SCI needs to exist in a first column (i.e., column index=0) of {tilde over (w)}2 (matrix of LC coefficients), and may be expressed in the manner of ┌l(fā)og2 2L┐ only for row index, which may be expressed as in FIG. 8, for example.

FIG. 8 is an example of index remapping of {tilde over (w)}2 based on SCI. FIG. 8A illustrates the SCI index in {tilde over (w)}2, and FIG. 8B illustrates the SCI index after the index remapping. FIG. 8 is only an example for convenience of description, and does not limit the technical scope of the present disclosure. Referring to FIG. 8, a matrix {tilde over (w)}2 composed of LC coefficients has a size of {2L×M}. For example, in the Type II codebook in which L=4 and M=10 parameter settings are set, the LC matrix {tilde over (w)}2 may be configured in an 8×10 matrix. As illustrated in FIG. 8A, assuming that the strongest coefficient is at the position of (5,6), the corresponding index is remapped as illustrated in FIG. 8B and may be set to a value (that is, after remapping, the index of the row of the SCI) corresponding to SCI=5 and reported.

權(quán)利要求

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