Beam failure detection in a second band based on measurements in a first band

A method for wireless communications by a base station (BS), comprising:

• outputting a first one or more reference signals (RSs) to a user equipment (UE) on a first radio frequency band;
• obtaining a request from the UE, in response to the first one or more RSs on the first radio frequency band, to send a second one or more RSs on a second radio frequency band;
• outputting the second one or more RSs to the UE on the second radio frequency band;
• and
• obtaining a beam failure recovery request message from the UE in response to the second one or more RSs.

An apparatus for wireless communications, comprising:

• a memory;
• and
• at least one processor coupled with the memory, the memory and processor configured to:
• receive a first one or more reference signals (RSs) on a first radio frequency band;
• send a request, in response to the first one or more RSs on the first radio frequency band, for a second one or more RSs on a second radio frequency band;
• and
• initiate a beam failure recovery procedure for a second radio frequency band based, at least in part, on the one or more RSs received on the second radio frequency band.

An apparatus for wireless communications, comprising:

• a memory;
• and
• at least one processor coupled with the memory, the memory and processor configured to:
• output a first one or more reference signals (RSs) to a user equipment (UE) on a first radio frequency band;
• obtain a request from the UE, in response to the first one or more RSs on the first radio frequency band, to send a second one or more RSs on a second radio frequency band;
• output the second one or more RSs to the UE on the second radio frequency band;
• and
• obtain a beam failure recovery request message from the UE in response to the second one or more RSs.