IP Library Granted Patent US 12,550,149
Granted Patent B2
US 12,550,149 · App. 17/287,242 · Granted Feb 10, 2026

User terminal

Inventors: Yuki Matsumura (Tokyo, JP); Hiroki Harada (Tokyo, JP); Satoshi Nagata (Tokyo, JP)
Assignee: NTT DOCOMO, INC.
H04W72/23H04L5/0051H04W72/046H04W72/1268
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Quick Facts
Patent No.
US 12,550,149
App. No.
17/287,242
Granted
Feb 10, 2026
Kind
B2
Abstract

User terminal according to one aspect of the present disclosure includes: a control section configured to determine a given spatial domain filter used for UL transmission based on at least one of presence or absence of report regarding support for beam correspondence, presence or absence of a configuration of spatial relation information, and a type of downlink control information that schedules UL transmission; and a transmitting section configured to perform UL transmission using the given spatial domain filter for appropriate selection of a UL beam applied to UL transmission.

Claims (16)

1 . A terminal comprising:

a processor that, when spatial relation information for a sounding reference signal (SRS) is not configured, applies a spatial domain filter used to receive a downlink reference signal (DL RS) corresponding to physical random access channel (PRACH) to the SRS; and

a transmitter that transmits the SRS by applying the spatial domain filter.

2 . The terminal according to claim 1 , wherein the processor, in a frequency range higher than 24 GHz, applies the spatial domain filter to the SRS.

3 . A radio communication method for a terminal comprising:

when spatial relation information for a sounding reference signal (SRS) is not configured, applying a spatial domain filter used to receive a downlink reference signal (DL RS) corresponding to physical random access channel (PRACH) to the SRS; and

transmitting the SRS by applying the spatial domain filter.

4 . A base station comprising:

a processor that, when spatial relation information for a sounding reference signal (SRS) is not configured to a terminal, determines that a spatial domain filter used to receive a downlink reference signal (DL RS) corresponding to physical random access channel (PRACH) is applied to the SRS;

a receiver that receives the SRS applied the spatial domain filter.

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

the terminal comprises:

a processor that, when spatial relation information for a sounding reference signal (SRS) is not configured, applies a spatial domain filter used to receive a downlink reference signal (DL RS) corresponding to physical random access channel (PRACH) to the SRS; and

a transmitter that transmits the SRS by applying the spatial domain filter;

the base station comprises:

a receiver that receives the SRS.

Assignments (2)
CORRECTIVE ASSIGNMENT TO CORRECT THE FIRST INVENTORS NAME PREVIOUSLY RECORDED AT REEL: 056070 FRAME: 0722. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded May 24, 2021
From: MATSUMURA, YUKI; HARADA, HIROKI; NAGATA, SATOSHI
To: NTT DOCOMO, INC.
Reel/Frame 056350/0642 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 28, 2021
From: MATSUMARA, YUKI; HARADA, HIROKI; NAGATA, SATOSHI
To: NTT DOCOMO, INC.
Reel/Frame 056070/0722 →
Continuity (1)
Related Publication 20210385849A1 · Dec 9, 2021
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