IP Library › Granted Patent US 12,192,810
Granted Patent B2
US 12,192,810 · App. 17/754,337 · Granted Jan 7, 2025

Terminal and radio communication method

Inventors: Yuki Matsumura (Tokyo, JP); Satoshi Nagata (Tokyo, JP); Shaozhen Guo (Beijing, CN); Jing Wang (Beijing, CN); Xiaolin Hou (Beijing, CN)
Assignee: NTT DOCOMO, INC.
H04W24/08
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,192,810
App. No.
17/754,337
Granted
Jan 7, 2025
Kind
B2
Abstract

A terminal according to an aspect of the present disclosure includes a control section that allocates a plurality of PDCCH candidates to at least one of a plurality of search space (SS) sets, based on maximum numbers of monitored physical downlink control channel (PDCCH) candidates and non-overlapped control channel elements (CCEs) per slot per transmission/reception point, and a receiving section that monitors the plurality of allocated PDCCH candidates, wherein each of the plurality of SS sets corresponds to any of a plurality of transmission/reception points. According to one aspect of the present disclosure, it is possible to appropriately monitor a downlink control channel.

Claims (14)

1. A terminal comprising:

a processor that allocates physical downlink control channel (PDCCH) candidates of a UE-specific search space set having a lower search space set index before PDCCH candidates of a UE-specific search space set having a higher search space set index, based on a limit per first control resource set (CORESET) group, for the first CORESET group configured for a higher layer index of two higher layer indices configured for multiple CORESETs, and wherein a common search space set exceeding the limit per the first CORESET group is not configured for the first CORESET group; and

a receiver that monitors the allocated PDCCH candidates.

2. The terminal according to claim 1 , wherein the limit per the first CORESET group corresponds to at least one of a maximum number of monitored PDCCH candidates per slot and a maximum number of non-overlapped control channel elements (CCEs) per slot.

3. The terminal according to claim 1 , wherein the receiver receives multiple physical downlink shared channels (PDSCHs) respectively scheduled by multiple downlink control information included in multiple PDCCHs detected based on the monitored PDCCH candidates.

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

allocating physical downlink control channel (PDCCH) candidates of a UE-specific search space set having a lower search space set index before PDCCH candidates of a UE-specific search space set having a higher search space set index, based on a limit per first control resource set (CORESET) group, for the first CORESET group configured for a higher layer index of two higher layer indices configured for multiple CORESETs, and wherein a common search space set exceeding the limit per the first CORESET group is not configured for the first CORESET group; and

monitoring the allocated PDCCH candidates.

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

the terminal comprises:

a processor that allocates physical downlink control channel (PDCCH) candidates of UE-specific search space set having a lower search space set index before PDCCH candidates of a UE-specific search space set having a higher search space set index, based on a limit per first control resource set (CORESET) group, for the first CORESET group configured for a higher layer index of two higher layer indices configured for multiple CORESETs, and wherein a common search space set exceeding the limit per the first CORESET group is not configured for the first CORESET group; and

a receiver that monitors the allocated PDCCH candidates, and

the base station comprises:

a transmitter that transmits the PDCCH candidates.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 6, 2022
From: MATSUMURA, YUKI; NAGATA, SATOSHI; GUO, SHAOZHEN; WANG, JING; HOU, XIAOLIN
To: NTT DOCOMO, INC.
Reel/Frame 059520/0884 →
Continuity (1)
Related Publication 20220345918A1 · Oct 27, 2022
References Cited (13)
US 20210022122A1 · Khoshnevisan · 2021 [cited by examiner]
Office Action issued in the counterpart Japanese Patent Application No. 2021-550861, mailed on Nov. 28, 2023 (6 pages). [cited by applicant]
Qualcomm Incorporated; “Multi-TRP Enhancements”; 3GPP TSG-RAN WG1 Meeting #98, R1-1909272; Prague, Czech Republic; Aug. 26-30, 2019 (32 pages). [cited by applicant]
Huawei et al.; “Enhancements on Multi-TRP/panel transmission”; 3GPP TSG RAN WG1 Meeting #96bis, R1-1903970; Xi'an, China; Apr. 8-12, 2019 (20 pages). [cited by applicant]
Huawei et al.; “Enhancements on Multi-TRP/panel transmission”; 3GPP TSG RAN WG1 Meeting #98, R1-1908066; Prague, Czech Republic; Aug. 26-30, 2019 (23 pages). [cited by applicant]
Extended European Search Report issued in European Application No. 19947708.4, dated May 25, 2023 (10 pages). [cited by applicant]
3GPP TSG RAN WG1 98; R1-1909918 “Summary of agreements for NR_eMIMO up to RAN1#98” Samsung; Prague, Czech Republic; Aug. 26-30, 2019 (9 pages). [cited by applicant]
3GPP TSG RAN WG1 #93; R1-1806142 “Remaining details on search space” Nokia, Nokia Shanghai Bell; Busan, South Korea; May 21-25, 2018 (12 pages). [cited by applicant]
3GPP TSG RAN WG1 Meeting #95; R1-1813298 “Maintenance for NR mobility procedure” NTT DOCOMO, Inc.; Spokane, USA; Nov. 12-16, 2018 (12 pages). [cited by applicant]
3GPP TSG RAN WG1 Meeting #92bis; R1-1804551 “Remaining issues on search space” LG Electronics; Sanya, China; Apr. 16-20, 2018 (6 pages). [cited by applicant]
3GPP TS 36.300 V8.12.0 “3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network … [cited by applicant]
International Search Report issued in International Application No. PCT/JP2019/038999, mailed May 19, 2020 (4 pages). [cited by applicant]
Written Opinion issued in International Application No. PCT/JP2019/038999; Dated May 19, 2020 (3 pages). [cited by applicant]