Certain aspects of the present disclosure provide techniques for beam failure detection per beam. A method that may be performed by a user equipment (UE) includes communicating with a network entity via a plurality of beams associated with a cell; performing a beam failure detection procedure per beam of the plurality of beams; and triggering a beam failure recovery procedure for a first beam of the plurality of beams in response to detecting a first beam failure for the first beam.

Methods, systems, and devices for wireless communication are described. A user equipment or a base station may use the techniques described herein to report one or more beam failures and subsequently determine the reason the beam failures have occurred (e.g., interference or noise). For example, the UE may transmit information to the base station that is related to the beam failure in addition to a beam failure indication. In some cases, the UE may indicate the reason the beam failure occurred. Because the base station may factor in the reason when selecting and indicating new beams for communicating with the UE, the likelihood that beam failure will occur again may decrease.

Apparatuses and methods for beam recovery operations in a wireless communication system. A method for operating a user equipment (UE) includes transmitting a reference signal (RS) resource index (q_new), receiving an indication of a unified transmission configuration indication (TCI) state, and receiving a beam failure recovery response (BFRR). The method further includes determining, based on the q_new and the BFRR, antenna port quasi co-location (QCL) parameters for: monitoring a physical downlink control channel (PDCCH), receiving a physical downlink shared channel (PDSCH), and receiving a channel state information RS (CSI-RS) and determining, based on the q_new and the BFRR, a spatial domain filter for transmitting: a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), and a sounding RS (SRS). The q_new corresponds to a synchronization signal block (SSB) resource index or a CSI-RS resource configuration index.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, an indication of a relaxation criterion associated with one or more reference signals used in performing at least one of radio link monitoring (RLM) or beam failure detection (BFD), wherein the relaxation criterion includes a mobility condition associated with the UE. The UE may perform, based at least in part on satisfying the mobility condition, one or more measurements using one or more of the reference signals and based at least in part on the relaxation criterion. Numerous other aspects are described.

A method for a user equipment (UE) performing a beam failure recovery (BFR) procedure is disclosed. The method comprises performing a first beam failure detection (BFD) procedure on a first cell, performing a second BFD procedure on a second cell, triggering a first BFR procedure for a first cell in response to a beam failure being detected on the first cell by the first BFD procedure, triggering a second BFR procedure for a second cell in response to a beam failure being detected on the second cell by the second BFD procedure, and canceling the triggered first BFR procedure for the first cell in response to a BFR report corresponding to at least one of the first and second BFR procedures being successfully transmitted to a base station (BS), wherein the BFR report includes BFR information of the first cell.

Certain aspects of the present disclosure provide techniques for enhancing beam failure indications and detections. In particular, the present disclosure provides techniques for identifying and indicating reasons associated with beam failures. For example, in aspects, a user equipment (UE) may evaluate multiple beam failure indicator (BFI) trigger conditions based on beam failure detection (BFD) reference signal (RS) measurements. The UE logs different types of BFIs based on the evaluating. If a logged number of BFIs exceeds a threshold value within a measurement period, the UE declares a beam failure and transmits, to a network entity, an indication of the beam failure and a reason for the beam failure based on the different types of BFIs detected.

A user equipment (UE) may perform a beam failure procedure per beam of multiple beams and transmit, to a base station, a partial beam failure (BF) report. The base station may transmit, to the UE, a configuration of the partial BF report, and the UE may generate and transmit the partial BF report for the base station to perform the beam management. The parameters of the aperiodic partial BF report may be configured with the same or different parameters for each beam. The partial BF report may include at least one of a current beam failure indication (BFI) count or a channel measurement for each beam. The partial BF report may be transmitted periodically or aperiodically.

Methods, systems, and devices for wireless communications are described. A wireless device (e.g., a user equipment and/or base station) may operate in a first mode in a wireless network over a radio frequency spectrum band. The wireless device may receive a signal indicating that a value of the radio frequency spectrum band has satisfied a threshold value. The wireless device may switch, based at least in part on the signal indicating that the value has satisfied the threshold value, from the first mode to a second mode for wireless communications in the wireless network, wherein a first length of a first synchronization signal block associated with the first mode is shorter than a second length of a second synchronization signal block associated with the second mode.

A base station may transmit, to a UE, a configuration set associated with a BFD-RS set corresponding to a plurality of beams including a first beam via an RRC message. The base station may transmit, to the UE, a BFD-RS associated with the first beam. The BFD-RS may be associated with the BFD-RS set. The UE may detect a BFI indication of the first beam based on the BFD-RS from the base station. The UE may increment a BFI counter in response to the detected BFI indication of the first beam irrespective of a status associated with other beams in the plurality of beams. The UE and the base station may perform a BFR procedure in response to the BFI counter reaching or exceeding a corresponding BFI counter threshold.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information identifying an association between a transmission configuration indicator (TCI) state and a transmit receive point (TRP). The UE may identify a beam failure associated with the TRP. The UE may communicate with one or more network devices to reset a beam associated with the beam failure, for the TCI state, based at least in part on the association between the TCI and the TRP. Numerous other aspects are described.