Abstract: A phase tracking reference signal (PT-RS) may be transmitted to enable a receiver to correct phase noise in wireless communication. A UE scheduled for one PDSCH with DMRS ports in two or more DMRS CDM groups that are associated with two TCI states may be configured for PT-RS using two PT-RS ports. Therefore, rather than limiting PT-RS to a single port, the PT-RS may be transmitted to the UE using two PT-RS ports. The apparatus transmits a capability indication for more than one PT-RS port for receiving a downlink shared channel based on a first TCI and a second TCI. The apparatus receives a configuration for a maximum number of downlink PT-RS ports from a base station.

Abstract: A configuration to enable a base station to schedule cross carrier scheduling of uplink and/or downlink transmissions using a DCI. The apparatus transmits, to a UE, a PDCCH including a cross carrier schedule. The PDCCH comprises DCI configured to schedule an uplink transmission or a downlink transmission. The DCI includes at least one FDRA field indicating RBs for the uplink transmission or the downlink transmission. The apparatus communicates with the UE based on the cross carrier schedule configured by the DCI.

Abstract: Methods, systems, and devices for wireless communications are described to support transmission of a resource modification information request from a user equipment (UE) to a base station, where the resource modification request may request an increased density of uplink transmission occasions. For example, the resource modification request may request an increase from a first density of uplink transmission occasions configured for the UE. The resource modification request may include a request for a decreased periodicity of uplink transmission occasions, an increased number of groups of repetitions for uplink transmission occasions, an increased number of resource blocks for uplink transmission occasions, or an increased modulation coding scheme for uplink transmission occasions. The base station may receive the resource modification request and may transmit a message to the UE, which may indicate a modified or new uplink grant configuration for uplink transmission occasions having a higher density (e.g.

Abstract: Certain aspects of the present disclosure provide techniques for uplink transmit beam update using uplink transmission configuration indicator (TCI) states. An example method generally includes receiving, from a network entity, signaling of an uplink transmission configuration indicator (TCI) state update for one or more uplink transmissions. The example method generally includes determining the uplink TCI state update is to be applied for dynamically scheduled uplink transmission, semi-persistently scheduled uplink transmission, or periodic uplink transmission. The example method generally includes applying the uplink TCI state update to one or more uplink transmissions in accordance with the determination.

Abstract: Systems, methods, and devices for secondary cell activation using temporary reference signals and beam selection are provided. In one aspect, a method of wireless communication is performed by a UE and includes receiving, from a base station (BS) via a first cell, an activation command to activate a second cell different from the first cell. The method further includes receiving, from the BS via the second cell during a cell activation period, a first reference signal different from a synchronization signal block (SSB) based on beam information. The method further includes performing a first measurement of the first reference signal, and operating in the second cell based on the first measurement.

Abstract: Example implementations include a method, apparatus and computer-readable medium of wireless communication. A user equipment (UE) may receive a downlink control information (DCI) indicating two or more transmission configuration indication (TCI) states for a physical downlink shared channel (PDSCH). The UE may differentiate that the two or more TCI states apply to all demodulation reference signal (DMRS) ports or all transmission layers across all resource blocks and symbols for the PDSCH from TCI states that apply to different sets of DMRS ports or different sets of resource blocks or symbols. The UE may generate a composite quasi-co-location (QCL) based on the two or more TCI states in response to the differentiating. The UE may receive the PDSCH based on the composite QCL.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first control message indicating an uplink power control configuration for the UE. The uplink power control configuration may be associated with a power control identifier and a resource set identifier. The UE may receive a second control message that schedules an uplink message for the UE. The second control message may indicate the resource set identifier and the power control identifier for transmission of the uplink message. The UE may determine a transmit power for the uplink message based on a set of power control parameters, the set of power control parameters corresponding to the resource set identifier and the power control identifier. The UE may transmit the uplink message using a resource set associated with the resource set identifier and in accordance with the determined transmit power.

Abstract: Aspects of the present disclosure relate to utilizing an intelligent reflecting surface (IRS), a tracking algorithm, or both, to receive, calibrate, and maintain orbital angular momentum (OAM) signaling between wireless devices. The present disclosure describes a first wireless device transmitting spatial-multiple input-multiple output (MIMO) beams to the IRS such that reflected waves from the IRS form a spatial mixture of OAM modes. The IRS may reflect such OAM modes to a second wireless device for subsequent reflection (e.g., a second IRS), reception, calibration, and optimization. For example, the second wireless device may perform pattern recognition of the concentric OAM modes (e.g., by estimating ellipse geometry) to determine the modes of the OAM signaling. The second wireless device may also perform decorrelation, where small perturbations to the elliptical OAM geometry allow the second wireless device to perform one or more optimization techniques related to the OAM signaling.

Abstract: Methods, systems, and devices for sidelink groupcast communications are described. A user equipment (UE) may transmit a beam training request to a base station to determine beams for use with other UEs in a sidelink groupcast communications group. The base station may receive the beam training request, identify wireless resources that a group of UEs may use to perform beam training, and may transmit a beam training grant to each UE of the group of UEs. The UE may transmit a number of training beams using the wireless resources provided in the beam training grant, and the other UEs may measure received signals on the wireless resources to identify one or more beams. Each UE may provide a beam training report to the base station. The base station, based on the beam training reports, may determine beams and resources for use in the groupcast sidelink communications.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information identifying a sidelink discontinuous reception (DRX) configuration, that is different from an access link DRX configuration, associated with operation in a sidelink communication deployment. The UE may monitor a physical downlink control channel (PDCCH) discontinuously using the sidelink DRX configuration. Numerous other aspects are described.

Abstract: A method of wireless communication performed by a base station includes receiving one or more particular signals. The method further includes receiving one or more transmissions associated with a first CC and a second CC. The one or more transmissions include first data and a first demodulation reference signal (DMRS) that are associated with the first CC, and the one or more transmissions further include second data and a second DMRS that are associated with the second CC. A determination whether to demodulate the second data using the first DMRS is based on the one or more particular signals.

Abstract: The present disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for downlink control information format for indication of transmission configuration indication state. A user equipment may receive, from a base station, downlink control information (DCI); determining whether the DCI is used for beam indication with or without downlink assignment. The UE also may apply transmission configuration indication (TCI) states based on TCI codepoints in a TCI field of the DCI, when the DCI is used for beam indication. The base station may generate the DCI with information indicating whether the DCI is intended for beam indication with or without downlink assignment, in which the DCI includes the TCI codepoints to apply the TCI states at the UE when the information in the DCI indicates that the DCI is intended for beam indication. The base station may transmit, to the UE, the DCI.

Abstract: Methods, systems, and devices for wireless communication are described. A mobile wireless node (e.g., a mobile integrated access and backhaul (IAB) node) may transmit a control message to a parent wireless node indicating one or more supported network connectivity modes. A network connectivity mode may provide network connectivity to one or more user equipments (UEs) via the mobile wireless node when wireless backhaul connectivity is lost between the mobile wireless node and the parent wireless node. The parent wireless node may authorize the mobile wireless node to use a first network connectivity mode, and the mobile wireless node may communicate with a first UE in accordance with the first network connectivity mode. In this way, the mobile wireless node may use a network connectivity mode to extend coverage of a network to the first UE even if the first UE is outside of the coverage area of the network.

Abstract: Wireless communications systems, apparatuses, and methods are provided. A method of wireless communication performed by a user equipment (UE) includes receiving, from a network unit, an indicator indicating dynamic waveform switching between a first waveform type and a second waveform type and monitoring, based on the indicator, for downlink control information (DCI) from the network unit, wherein at least one of a size of the DCI, a size of a bitfield of the DCI, or a location of the bitfield of the DCI is interpreted based on the indicator.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a subband full duplex (SBFD) pattern report, indicating a candidate SBFD pattern. The candidate SBFD pattern may indicate a candidate number of downlink or uplink subbands, a number of or location of guard bands, frequency locations of the uplink or downlink subbands or guard bands, a total uplink and downlink bandwidth, time locations of SBFD symbols or slots, transmit/receive beam pairs, transmission configuration indicator (TCI) state pairs or timing, or any combination thereof. The network may configure the UE with an SBFD pattern based on receiving the SBFD pattern report (e.g., which may or may not be the same as the reported candidate SBFD pattern).

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media for a user equipment (UE) to perform layer 1 (L1) measurements of a candidate cell for an L1/L2 mobility procedure. The UE receives, from a current serving cell, a configuration of a channel state information (CSI) reference signal (RS) measurement resource for L1 measurements of a candidate cell. The UE measures a signal transmitted from the candidate cell based on whether the candidate cell is an intra-frequency candidate cell or an inter-frequency candidate cell. The UE may transmit a CSI report including the L1 measurements of the candidate cells to the current serving cell.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a forwarding node may transmit an indication of a selection of a wireless communication device (WCD) controlled operation mode, wherein the selection is obtained from a control node or determined by the forwarding node. The forwarding node may communicate with a WCD based at least in part on the WCD-controlled operation mode. Numerous other aspects are described.

Abstract: Aspects relate to measuring and scheduling reference signals. A user equipment (UE) detects reference signals having overlapping resources, and determines a context associated with the reference signals. A Layer 1 (L1) measurement is then performed of at least one reference signal according to a prioritization associated with the context. In another aspect, a network entity determines a scheduling of resources that enables a UE to prioritize performing an L1 measurement of a reference signal from a non-serving cell, and communicates with the UE according to the scheduling. In yet another aspect, a UE communicates with a gNb using transmission configuration indication (TCI) states associated with a corresponding control resource set (CORESET) pool of CORESETs. Beam failure detection (BFD) reference signals are then identified explicitly via a configuration signaling, or implicitly based on the TCI states. The BFD reference signals are then monitored to facilitate detecting a beam failure event.

Abstract: This disclosure provides systems, methods, and devices for wireless communication that support power headroom differential reporting for reference resource signals transmitted at different transmission power than other uplink transmissions. In a first aspect, a method of wireless communication includes determining a power headroom value, by a user equipment (UE), using a maximum configured transmission power and a transmission power configured for an uplink transmission at a configured modulation and coding scheme (MCS).

Abstract: This disclosure provides systems, methods and apparatus, including computer storage media for communication between a base station with two transmit receive point (TRPs) and a UE based on a single DCI. The UE receives a single downlink control information (DCI) for the UE that is configured with a first unified transmission configuration indication (TCI) state for a first TRP and second unified TCI state for a second TRP. The DCI includes at least a first TCI field. The UE updates a configuration of at least one of the first unified TCI state to a first updated unified TCI state or the second unified TCI state to a second updated unified TCI state based on the at least one TCI field. The UE communicates with at least one of the first TRP or the second TRP based on the first updated unified TCI state or the second updated unified TCI state.