Method and device for transmission configuration indicator-based control channel candidate monitoring in wireless communication

A base station, comprising:

• a transmitter configured to:
• transmit first control information that schedules a downlink channel transmission and that indicates a first time-frequency resource, and
• transmit the downlink channel transmission;
• and
• a receiver configured to receive first HARQ-ACK information for the downlink channel transmission in the first time-frequency resource,
• wherein a first TCI state group is based on the first control information,
• wherein on a condition that a number of TCI states in the first TCI state group is one, a control channel candidate is monitored from a first time slot using the first TCI state group, and wherein the first time slot is based on the first time-frequency resource, and
• wherein the first control information is transmitted on at least one first control channel candidate in a first CORESET pool or at least one second control channel candidate in a second CORESET pool, wherein the at least one first control channel candidate is monitored from a second slot using a second TCI state and the at least one second control channel candidate is monitored from a third slot using a third TCI state.

A method, comprising:

• receiving first control information that schedules a downlink channel transmission and that indicates a first time-frequency resource;
• receiving the downlink channel transmission;
• transmitting first HARQ-ACK information for the downlink channel transmission in the first time-frequency resource, wherein a first TCI state group is based on the first control information;
• and
• on a condition that a number of TCI states in the first TCI state group is one, monitoring a control channel candidate from a first time slot using the first TCI state group, wherein the first time slot is based on the first time-frequency resource,
• wherein the first control information is received on at least one first control channel candidate in a first CORESET pool or at least one second control channel candidate in a second CORESET pool, wherein the at least one first control channel candidate is monitored from a second slot using a second TCI state and the at least one second control channel candidate is monitored from a third slot using a third TCI state.

A method, comprising:

• transmitting first control information that schedules a downlink channel transmission and that indicates a first time-frequency resource;
• transmitting the downlink channel transmission;
• and
• receiving first HARQ-ACK information for the downlink channel transmission in the first time-frequency resource,
• wherein a first TCI state group is based on the first control information,
• wherein on a condition that a number of TCI states in the first TCI state group is one, a control channel candidate is monitored from a first time slot using the first TCI state group, and wherein the first time slot is based on the first time-frequency resource, and
• wherein the first control information is transmitted on at least one first control channel candidate in a first CORESET pool or at least one second control channel candidate in a second CORESET pool, wherein the at least one first control channel candidate is monitored from a second slot using a second TCI state and the at least one second control channel candidate is monitored from a third slot using a third TCI state.