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

專(zhuān)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(lèi)
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)

In the FD region, based on which permutation scheme of 1)/2)/3) described above, the UCI omission may be performed according to a method predefined between the base station and the terminal. Alternatively, the base station may set a permutation scheme to the UE. Alternatively, the UE may report a permutation scheme applied to UCI omission to the base station together with CSI reporting.

Based on the above-described permutation scheme, a priority level for the LC coefficients may be calculated, and the LC coefficients may be divided into a plurality of groups based on the priorities of the LC coefficients. The LC coefficients of the lower group may be omitted according to the priority of the group. That is, the omission may be performed according to the priority of the LC coefficient and reported to the base station.

Proposal 1-2: We propose a method of setting an omission element (e.g., bitmap, LC coefficients, etc.) and an omission scheme in the spatial domain for the UCI part 2 information configuration of Type II CSI.

1) Method 1

In a spatial domain (SD) aspect in a manner similar to that of Proposal 1-1, it may be set in a manner such as reporting the LC coefficients belonging to two rows by utilizing the SD basis corresponding to SCI and the SD basis being a pair in terms of the antenna port, and the bitmap size may be set as many as the number. Alternatively, it can be used to operate by using ±M′ SD bases based on a specific SD basis or to report LC coefficients belonging to a row of {tilde over (w)}2 set through a specific rule.

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