User terminal and radio communication method
AssigneeNtt Docomo, Inc.
InventorsHiroki Harada, Satoshi Nagata, Jing Wang, Liu Liu
Life of this patent
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Abstract
In order to control communication operations properly in a secondary cell even when a beam failure and/or a BR failure occur in the secondary cell, a user terminal, according to one aspect of the present disclosure, has a control section that controls adjustment of a deactivation timer for a certain secondary cell and/or indication of a beam failure and/or a beam recovery (BR) failure in the certain secondary cell, based on the beam failure and/or a result of BR in the certain secondary cell, and a transmission section that transmits information about the beam failure and/or the BR failure in the certain secondary cell by using another cell.
Claims6
A terminal comprising:
- a transmitter that, when beam failure is detected in a secondary cell, transmits to a base station, by using Media Access Control Control Element (MAC CE), information indicating a cell in which the beam failure is detected and information about candidate beams, as information about the beam failure;
- and
- a processor that, when receiving an indication from the base station, controls monitoring with the candidate beams for beam recovery.
A radio communication method for a terminal, the method comprising:
- when beam failure is detected in a secondary cell, transmitting to a base station, by using Media Access Control Control Element (MAC CE), information indicating a cell in which the beam failure is detected and information about candidate beams, as information about the beam failure;
- and
- when receiving an indication from the base station, controlling monitoring with the candidate beams for beam recovery.
A base station comprising:
- a receiver that, when beam failure is detected in a secondary cell, receives from a terminal, by using Media Access Control Control Element (MAC CE), information indicating a cell in which the beam failure is detected and information about candidate beams, as information about the beam failure;
- and
- a transmitter that transmits an indication to the terminal,
- wherein the terminal controls monitoring with the candidate beams for beam recovery.
A system comprising a terminal and a base station, wherein
- the terminal comprises:
- a transmitter of the terminal that, when beam failure is detected in a secondary cell, transmits to the base station, by using Media Access Control Control Element (MAC CE), information indicating a cell in which the beam failure is detected and information about candidate beams, as information about the beam failure;
- and
- a processor that, when receiving an indication from the base station, controls monitoring with the candidate beams for beam recovery, and
- the base station comprises:
- a receiver that receives the information about the beam failure from the terminal;
- and
- a transmitter of the base station that transmits the indication to the terminal.
Dependencies are inferred from the claim text.