Abstract: The apparatus, in some aspects, may be a wireless device that is configured to monitor for one or more discovery signal transmissions within a single symbol, where each discovery signal for a single beam direction spans less than a symbol in time and synchronize with a network node based on a reception of the one or more discovery signal transmissions. The apparatus, in some aspects, may be network node that is configured to generate one or more discovery signal transmissions for transmission within a single symbol, wherein each discovery signal for a single beam direction spans less than a symbol in time, and transmit the one or more discovery signal transmissions within the single symbol.

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may support multiple parallel random access procedures for multiple transmission reception points (TRPs) or for component carriers (CCs) in different TAGs if one or more conditions are satisfied. A UE may support parallel random access procedures for a same CC configured with two TAGs (e.g., if the control resource set (CORESET) pool indices for the random access procedures are different). A UE may support parallel random access procedures for different CCs associated with different TAGs. A UE may support parallel random access procedures for different CCs across or within sets of CCs. A UE may support random access procedures for a same CC or different CCs if the random access procedures associated with a same CC have different CORESET pool indices, and additional random access procedures are associated with different CCs and different TAGs.

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a first network entity and a second network entity may exchange multi-dimensional channel measurement resource information. The second network entity may transmit control signaling to the first network entity to indicate a channel measurement resource set including channel measurement resources associated with multiple dimensions. The channel measurement resources may be indexed according to a first set of indices in a first dimension and a second set of indices in a second dimension. Alternatively, the first network entity may map the channel measurement resources to the first set of indices and the second set of indices. Each index may indicate dimensional information in the respective dimension. The first network entity may select a receive beam to receive a reference signal via one of the channel measurement resources based on the dimensional information associated with the channel measurement resource.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive and measure channel state information reference signals (CSI-RS) and synchronization signal blocks (SSB) from a network entity via a reference signal resource set. The UE may select reference signal resources from the reference signal resource set based on channel measurements associated with the selected reference signal resources. The UE may determine a downlink precoding matrix based on quasi-co-location (QCL) information associated with a reference signal resource. In some examples, the UE may receive an indication of the QCL information from the network entity. Accordingly, the UE may transmit a report indicating both the downlink precoding matrix and the reference signal resource associated with the QCL information. Upon receiving the report from the UE, the network entity may output one or more downlink messages using the downlink precoding matrix indicated by the report.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive first signaling from a first TRP and second signaling from a second TRP. The UE may determine that a first receive timing difference between a first receive timing for the first signaling from the first TRP and a second receive timing for the second signaling from the second TRP exceeds a threshold. The UE may transmit, based on the determining, a first message indicating that the first receive timing difference between the first receive timing and the second receive timing exceeds the threshold. The UE may receive, in response to the first message, a second message indicating for the UE to perform wireless communications with a single TRP or with two TRPs associated with a second receive timing difference at the UE that is less than or equal to the threshold.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station (BS) may determine, for a user equipment (UE) in an idle mode or an inactive mode, a reference signal configuration, wherein the reference signal configuration is for a channel state information reference signal or a tracking reference signal; and transmit, to the UE, a message including information identifying the reference signal configuration. Numerous other aspects are provided.

Abstract: A base station may transmit, to a user equipment (UE), a reference signal (RS) associated with a physical downlink control channel (PDCCH) for scheduling a physical downlink shared channel (PDSCH), the RS indicating a repetition factor for a PUCCH from the UE. The UE may determine the repetition factor for the PUCCH based on at least one parameter of the RS transmitted with the PDCCH, and repeat the transmission of the PUCCH to the base station based on the repetition factor indicated by the RS associated with the PDCCH. The PDCCH may include an indication of a dynamic PUCCH repetition factor, and the RS may indicate the UE to apply the dynamic PUCCH repetition factor. The RS may include the demodulating RS (DM-RS) received with the PDCCH.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may receive a signal associated with a set of resources. The first network node may determine, using a multi-head machine learning model having a body module and a plurality of head modules, a plurality of estimated parameter values of a plurality of parameters corresponding to the set of resources, wherein the body module extracts a set of common features based at least in part on a set of model inputs corresponding to the set of resources, and wherein the plurality of head modules generate the plurality of estimated parameter values based at least in part on the set of common features. The first network node may perform a wireless communication operation based at least in part on the plurality of estimated parameter values. Numerous other aspects are described.

Abstract: A base station may identify an association between a set of physical cell identifiers (PCIs) identifying different transmission reception points (TRPs) and a set of transmission configuration indicator (TCI) states for a user equipment (UE). The base station may transmit a TCI state and PCI association indication to the UE. The UE may receive a downlink transmission using a receive beam associated with a TCI state, and may identify a PCI of the set of PCIs to use to decode the received downlink transmission. In cases where the TCI state used to receive the downlink transmission is associated with multiple PCIs, the UE may select a default PCI from the multiple PCIs, and may decode the received transmission accordingly. In some examples, the UE may receive reference signals from one or more of the serving TRPs and may identify a PCI to use to decode the received reference signals.

Abstract: Certain aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for determining when to apply downlink control information (DCI)-based updates. A method that may be performed by a user equipment (UE) includes receiving a downlink control information (DCI) indicating an update to be applied to at least one of an uplink (UL) transmission or a downlink (DL) transmission, determining an application time for applying the update based, at least in part, on a slot where an acknowledgement (ACK) was transmitted, and applying the update in accordance with the determined application time.

Abstract: Aspects described herein relate to establishing a control connection with at least a first node for receiving control information for providing a repeater function for two or more upstream nodes, communicating control information over the control connection from at least the first node, and providing, based on the control information, the repeater function between at least a first upstream node of the two or more upstream nodes and at least one downstream node and between at least a second upstream node of the two or more upstream nodes and the at least one downstream node or at least another downstream node.

Abstract: In an aspect, a PDCCH and a PDSCH are transmitted by a BS to a UE, whereby the PDDCH includes a first DCI part and the PDSCH includes a second DCI part. In an example, a TBS associated with the PDSCH may be determined (e.g., either by factoring or ignoring resource elements associated with the second DCI part). In another example, the PDSCH may be associated with a modulation scheme with a constellation having constellation points, whereby the second DCI part in the PDSCH is restricted to a subset of the constellation points. In another example, rate-matching may be performed for one or more resource elements of the second DCI part.

Abstract: An apparatus for wireless communication includes a memory and one or more processors coupled to the memory. The one or more processors are configured to determine a plurality of pre-coders available for uplink transmissions and to select a particular pre-coder from among the plurality of pre-coders. The one or more processors are further configured to initiate encoding of an uplink signal based on the particular pre-coder to generate a pre-coded uplink signal. The pre-coded uplink signal has one or more characteristics that enable a base station to identify the particular pre-coder. The one or more processors are further configured to initiate transmission of the pre-coded uplink signal.

Abstract: Methods, systems, and devices for wireless communications are described. In one aspect, a first network entity may transmit a request for resources (e.g., periodic, aperiodic, or semi-persistent resources) to monitor for reference signals from a second network entity, and the first network entity may perform CLI measurements on the reference signals received on the resources from the second network entity. The first network entity or the second network entity may be a mobile network entity. The CLI measurements may be used to schedule communications at the first network entity or the second network entity. In another aspect, a first network entity may receive an indication of aperiodic resources to monitor for reference signals from a second network entity, and the first network entity may perform cross link interference (CLI) measurements on the reference signals received on the aperiodic resources from the second network entity.

Abstract: Certain aspects of the present disclosure provide techniques for determining resources to use for deferred transmission of acknowledgment feedback. An example method generally includes monitoring for a semi-persistently scheduled (SPS) physical downlink shared channel (PDSCH); determining that a first resource, identified by a first physical uplink control channel (PUCCH) resource identifier (PRI), for transmitting a physical uplink control channel (PUCCH) with acknowledgment feedback for the SPS PDSCH collides with a downlink resource; identifying a second resource for transmitting the PUCCH based on parameters associated with the first PRI or a second PRI; and transmitting the PUCCH on the second resource.

Abstract: This disclosure provides systems, methods and apparatuses for uplink channel transmission for multiple transmit receive points (TRPs). In one aspect, a user equipment (UE) resolves overlapping physical uplink control channels (PUCCHs) in a slot or overlapping PUCCH(s) and PUSCH(s) that are mapped to a same TRP in a multi-TRP scenario and that are mapped to two or more different TRPs in the multi-TRP scenario. For example, in a multi-TRP scenario that includes two TRPs, the UE may eliminate overlap of these uplink channels for each of the two TRPs individually and may additionally eliminate overlap of these uplink channels between the two TRPs.

Abstract: In an aspect of the disclosure, a UE may be configured to receive a dataset in an encoded format on a network communication interface. The UE may be further configured to transmit a unicast transmission including a subset of the dataset on a direct communication interface to another UE when a non-unicast transmission is received indicating that the other UE failed to successfully receive the subset of the dataset. The other UE may be configured to transmit, on the direct communication interface, a non-unicast transmission indicating a failure to successfully receive a subset of a dataset on a network communication interface. The other UE may be further configured to receive a unicast transmission including the subset of the dataset on the direct communication interface. A base station may configure the UEs to communicate data on the direct communication interface after receiving the data on a network communication interface.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a source base station, configuration information for a conditional handover, where the configuration information indicates an execution condition and one or more carrier aggregation configurations associated with one or more candidate base stations, and where the execution condition is based at least in part on at least one of a beam-based measurement or a cell-based measurement and at least one of special cells or secondary cells (SCells) associated with the one or more candidate base stations. The UE may transmit, to a candidate base station of the one or more candidate base stations, a message to initiate the conditional handover based at least in part on the execution condition having been satisfied. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described in which a first wireless device, such as a user equipment (UE), may select a set of different groups of antenna elements that are preferred for use in millimeter wave communications at the first wireless device. The first wireless device may provide an indication of the set of different groups of antenna elements to a second wireless device, such as a base station. The second wireless device may initiate a beam training based on the set of different groups of antenna elements in order to establish one or more beams to be used for communications using one or more of the different groups of antenna elements that were indicated by the first wireless device.

Abstract: Certain aspects of the present disclosure provide a method of wireless communication by a user equipment (UE), generally including receiving signaling configuring the UE with a set of candidate cells, receiving, from a serving cell, downlink control information (DCI) indicating one candidate cell of the set of candidate cells as a target cell for transmitting a physical random access channel (PRACH), and transmitting the PRACH in the target cell.