Techniques for beam failure recovery in wireless communications

A method for wireless communication at an access network entity, comprising:

• receiving, from a user equipment (UE), a capability indication that the UE can perform adjustments of a variable threshold for a beam failure declaration;
• transmitting first control information to the UE that configures beam failure indications based at least in part on a beam failure count threshold and a number of reference signal measurements of a first beam of two or more active beams that are above a measurement threshold value, the two or more active beams each being active for communications with the UE prior to the reference signal measurements;
• transmitting second control information to the UE that configures reporting of the beam failure declaration based at least in part on an amount of beam failure indications and the variable threshold for the beam failure declaration;
• transmitting one or more reference signals to the UE via the first beam;
• and
• receiving, from the UE responsive to the one or more reference signals, one or more of a measurement report or the beam failure declaration that indicates communications with the UE are to be switched from the first beam to a second beam of the two or more active beams.

An apparatus for wireless communication at a user equipment (UE), comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• transmit, to an access network entity, a capability indication that the UE can perform adjustments of a variable threshold for triggering a beam failure declaration;
• measure one or more reference signals on at least a first beam of two or more active beams to obtain one or more reference signal measurements of the first beam, the two or more active beams each being active for communications at the UE prior to measurement of the one or more reference signals;
• identify a presence of a beam failure indication based at least in part on a beam failure count threshold and a number of the one or more reference signal measurements of the first beam of the two or more active beams that are above a measurement threshold value;
• and
• transmit the beam failure declaration based at least in part on a number of instances of the beam failure indication and the variable threshold for triggering the beam failure declaration.

An apparatus for wireless communication at an access network entity, comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, from a user equipment (UE), a capability indication that the UE can perform adjustments of a variable threshold for a beam failure declaration;
• transmit first control information to the UE that configures beam failure indications based at least in part on a beam failure count threshold and a number of reference signal measurements of a first beam of two or more active beams that are above a measurement threshold value, the two or more active beams each being active for communications with the UE prior to the reference signal measurements;
• transmit second control information to the UE that configures reporting of the beam failure declaration based at least in part on an amount of beam failure indications and the variable threshold for the beam failure declaration;
• transmit one or more reference signals to the UE via the first beam;
• and
• receive, from the UE responsive to the one or more reference signals, one or more of a measurement report or the beam failure declaration that indicates communications with the UE are to be switched from the first beam to a second beam of the two or more active beams.