IP Library › Granted Patent US 11,871,290
Granted Patent B2
US 11,871,290 · App. 17/414,233 · Granted Jan 9, 2024

Methods and devices for monitoring a radio link quality

Inventors: Yuki Matsumura (Tokyo, JP); Satoshi Nagata (Tokyo, JP)
Assignee: NTT DOCOMO, INC.
H04W36/305H04W76/19
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Quick Facts
Patent No.
US 11,871,290
App. No.
17/414,233
Granted
Jan 9, 2024
Kind
B2
Abstract

A user terminal includes a control section that, in a case where a maximum number of secondary cells to which a beam failure recovery is applied is 1 and where a specific secondary cell for an uplink control channel is configured, applies the beam failure recovery to the specific secondary cell, and a transmitting section that transmits, in the beam failure recovery, a beam failure recovery request to one of a plurality of cells. According to one aspect of the present disclosure, a BFR procedure can be appropriately executed.

Claims (20)

1. A terminal comprising:

a processor that controls beam failure recovery based on whether or not a certain secondary cell for an uplink control channel is configured; and

a transmitter that transmits a beam failure recovery request to one of a plurality of cells in the beam failure recovery,

wherein the processor determines a maximum number of secondary cells to which the beam failure recovery is applied, based on a transmitted type among a plurality of types of the beam failure recovery request, and

wherein the processor controls the beam failure recovery based on the maximum number of secondary cells to which the beam failure recovery is applied.

2. The terminal according to claim 1 , wherein the transmitter reports capability information including the maximum number.

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

controlling beam failure recovery based on whether or not a certain secondary cell for an uplink control channel is configured;

transmitting a beam failure recovery request to one of a plurality of cells in the beam failure recovery;

determining a maximum number of secondary cells to which the beam failure recovery is applied, based on a transmitted type among a plurality of types of the beam failure recovery request; and

controlling the beam failure recovery based on the maximum number of secondary cells to which the beam failure recovery is applied.

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

the terminal comprises:

a processor that controls beam failure recovery based on whether or not a certain secondary cell for an uplink control channel is configured; and

a transmitter that transmits a beam failure recovery request to one of a plurality of cells in the beam failure recovery,

wherein the processor determines a maximum number of secondary cells to which the beam failure recovery is applied, based on a transmitted type among a plurality of types of the beam failure recovery request, and

wherein the processor controls the beam failure recovery based on the maximum number of secondary cells to which the beam failure recovery is applied, and

the base station comprises:

a processor that determines whether or not the certain secondary cell is configured; and

a receiver that receives the beam failure recovery request.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 22, 2021
From: MATSUMURA, YUKI; NAGATA, SATOSHI
To: NTT DOCOMO, INC.
Reel/Frame 056650/0259 →
Continuity (1)
Related Publication 20220053398A1 · Feb 17, 2022