Patent ID: 11968079
Assignee: NTT DOCOMO, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. 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 is configured to control the beam failure recovery based on the maximum number of secondary cells to which the beam failure recovery to the beam failure recovery request transmitted by Medium Access Control Control Element, MAC CE, is applied; and
a maximum number of secondary cells to which the beam failure recovery to the beam failure recovery request transmitted by Physical Random Access Channel, PRACH, is applied, is smaller than the maximum number of secondary cells to which the beam failure recovery to the beam failure recovery request transmitted by the MAC CE, 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.