IP Library Granted Patent US 12,439,416
Granted Patent B2
US 12,439,416 · App. 17/788,843 · Granted Oct 7, 2025

Terminal and radio communication method

Inventors: Shohei Yoshioka (Tokyo, JP); Satoshi Nagata (Tokyo, JP); Lihui Wang (Beijing, CN); Xiaolin Hou (Beijing, CN)
Assignee: NTT DOCOMO, INC.
H04W72/23
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Quick Facts
Patent No.
US 12,439,416
App. No.
17/788,843
Granted
Oct 7, 2025
Kind
B2
Abstract

A terminal according to an aspect of the present disclosure includes: a receiving section that receives information on one or more cells that transmit a downlink control channel for scheduling a physical shared channel of a primary cell; and a control section that determines, based on a cell that transmits the downlink control channel, at least one of a cell that monitors the downlink control channel and a search space type.

Claims (22)

1. A terminal comprising:

a receiver that receives information on a scheduling type applied to a primary cell; and

a processor that determines, based on the information on the scheduling type, a cell that transmits a downlink control channel that includes a 3-bit Carrier Indicator Field for scheduling the primary cell, and

wherein when a scheduling type in which scheduling is performed by another secondary cell is configured for the primary cell, the primary cell and the another secondary cell are included in a same frequency range.

2. The terminal according to claim 1 , wherein when the primary cell is configured as a scheduled cell which is scheduled by the another secondary cell, the primary cell is scheduled by at least one of a downlink control channel on the another secondary cell and a downlink control channel on the primary cell.

3. The terminal according to claim 1 , wherein when a scheduling type in which scheduling is performed by the another secondary cell is configured for the primary cell, the primary cell and the another secondary cell are included in a same cell group that is an MCG.

4. A radio communication method for a terminal, comprising:

receiving information on a scheduling type applied to a primary cell; and

determining, based on the information on the scheduling type, a cell that transmits a downlink control channel that includes a 3-bit Carrier Indicator Field for scheduling the primary cell, and

wherein when a scheduling type in which scheduling is performed by another secondary cell is configured for the primary cell, the primary cell and the another secondary cell are included in a same frequency range.

5. A base station comprising:

a transmitter that transmits information on a scheduling type applied to a primary cell; and

a processor that indicates, based on the information on the scheduling type, a cell that transmits a downlink control channel that includes a 3-bit Carrier Indicator Field for scheduling the primary cell, and

wherein when a scheduling type in which scheduling is performed by another secondary cell is configured for the primary cell, the primary cell and the another secondary cell are included in a same frequency range.

6. A system comprising a terminal and a base station, wherein

the terminal comprises:

a receiver that receives information on a scheduling type applied to a primary cell; and

a processor that determines, based on the information on the scheduling type, a cell that transmits a downlink control channel that includes a 3-bit Carrier Indicator Field for scheduling the primary cell,

wherein when a scheduling type in which scheduling is performed by another secondary cell is configured for the primary cell, the primary cell and the another secondary cell are included in a same frequency range, and

the base station comprises:

a transmitter that transmits the information on the scheduling type; and

a processor that indicates, based on the information on the scheduling type, the cell that transmits the downlink control channel.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 30, 2022
From: YOSHIOKA, SHOHEI; NAGATA, SATOSHI; WANG, LIHUI; HOU, XIAOLIN
To: NTT DOCOMO, INC.
Reel/Frame 060372/0308 →
Continuity (1)
Related Publication 20230036466A1 · Feb 2, 2023
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US 12,726,995