Beam failure report response

A user equipment (UE) for wireless communication in a wireless communication network, comprising:

• a wireless transceiver;
• a memory;
• and
• a processor communicatively coupled to the wireless transceiver and the memory, wherein the processor and the memory are configured to:
• detect a beam failure within a cell,
• transmit a beam failure recovery request in response to detecting the beam failure, wherein the beam failure recovery request is associated with a hybrid automatic repeat request (HARQ) identification (ID), and wherein the beam failure recovery request includes an indication of a candidate beam,
• receive a beam failure recovery response comprising a downlink control channel including the HARQ ID associated with the beam failure recovery request, wherein the beam failure recovery response indicates whether the beam failure recovery request is received;
• transmit an acknowledgment (ACK) message when the beam failure recovery response is decoded;
• and
• following a predetermined number of symbols after an end of the ACK message, apply the candidate beam indicated in the beam failure recovery request for a downlink channel.

A base station for wireless communication in a wireless communication network, comprising:

• a wireless transceiver;
• a memory;
• and
• a processor communicatively coupled to the wireless transceiver and the memory, wherein the processor and the memory are configured to:
• receive, from a user equipment (UE), a beam failure recovery request indicating a beam failure within a cell associated with the base station, wherein the beam failure recovery request is associated with a hybrid automatic repeat request (HARQ) identification (ID), and wherein the beam failure recovery request includes an indication of a candidate beam, and
• transmit a beam failure recovery response to the UE comprising a downlink control channel including the HARQ ID associated with the beam failure recovery request, wherein the beam failure recovery response indicates whether the beam failure recovery request is received, wherein the beam failure recovery response further comprises a control resource set (CORESET) beam resetting time of a specified number of symbols after the end of an ACK message acknowledging receiving the beam failure recovery response.

A user equipment (UE), comprising:

• means detecting a beam failure within a cell;
• means for transmitting a beam failure recovery request in response to detecting the beam failure, wherein the beam failure recovery request is associated with a hybrid automatic repeat request (HARQ) identification (ID), and wherein the beam failure recovery request includes an indication of a candidate beam;
• means for receiving a beam failure recovery response comprising a downlink control channel including the HARQ ID associated with the beam failure recovery request, wherein the beam failure recovery response indicates whether the beam failure recovery request is received,
• means for transmitting an acknowledgment (ACK) message when the beam failure recovery response is decoded, and
• following a predetermined number of symbols after an end of the ACK message, means for applying the candidate beam indicated in the beam failure recovery request for a downlink channel.