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User terminal and radio communication method

專利號(hào)
US12108391B2
公開日期
2024-10-01
申請(qǐng)人
NTT DOCOMO, INC.(JP Tokyo)
發(fā)明人
Yuki Matsumura; Kazuki Takeda; Satoshi Nagata
IPC分類
H04W72/1273; H04L5/00; H04W24/08; H04W72/0453; H04W72/23
技術(shù)領(lǐng)域
qcl,tci,scheduling,pdsch,rs,ue,cell,may,reception,pdcch
地域: Tokyo

摘要

A user terminal according to one aspect of the present disclosure includes: a reception section which monitors a first downlink control channel for cross-carrier scheduling in a first cell; and a control section which assumes that transmission configuration indication (TCI) field information indicating whether a TCI field exists in downlink control information is set to be enabled when a downlink shared channel of a second cell is scheduled by the downlink control information in the first downlink control channel and the second cell is different from the first cell. According to one aspect of the present disclosure, the information about the QCL can be appropriately determined when the user terminal configures the cross-carrier scheduling.

說(shuō)明書

However, even in a case where the scheduling cell is the same as the scheduled cell, scheduling of the PDSCH is limited if a constraint of the scheduling offset is applied, and there is a possibility that frequency utilization efficiency deteriorates. For example, when the subcarrier spacing (SCS) is 120 kHz, the scheduling offset threshold value is equal to or greater than fourteen symbols, PDSCH is restricted to slots subsequent to the next slot of the corresponding PDCCH.

Therefore, the present inventors have conceived an operation in which UE configured with cross-carrier scheduling determines information about a QCL.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Radio communication methods according to the respective embodiments may be applied independently, or may be applied in combination.

The TCI state may be replaced with a TCI state or a QCL assumption, a QCL assumption, a spatial domain reception filter, a UE spatial domain reception filter, a spatial domain filter, a UE reception beam, a DL reception beam, a DL-RS, or the like. RS in the TCI state related to the QCL type D parameter, RS of QCL type D, DL-RS associated with QCL type D, DL-RS with QCL type D, a source of the DL-RS, SSB, and CSI-RS may be replaced with each other. The QCL parameter and the QCL type parameter may be replaced with each other.

In the present disclosure, the expression that A has a QCL with B and the expression that A is quasi-co-located (in QCL) with B may be replaced with each other. RS in the TCI state related to QCL parameter(s) used for the PDCCH QCL indication may be replaced with RS in the TCI state used for the PDCCH QCL indication, RS in the TCI state for the PDCCH, or the like.

權(quán)利要求

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