Abstract: Methods, systems, and devices for wireless communications are described. A receiving device may receive, from a transmitting device, a configuration indicating a set of orbital angular momentum (OAM) modes for joint reporting, where at least one of the set of OAM modes is associated with transmission via two or more of a plurality of sets of antennas arranged in a set of concentric circular arrays. The receiving device may transmit, to the transmitting device, a report indicating precoding information for each of at least a subset of the set of OAM modes, where the precoding information includes one or more first parameters common to the set of OAM modes and one or more second parameters for respective ones of the at least the subset of the set of OAM modes.

Abstract: Methods, systems, and devices are described that support techniques for wireless communications using multiple radio access technologies (RATs). Described techniques provide for dual-connectivity (DC), carrier aggregation, or both, in which different carriers are provided via different RATs. A multi-RAT DC configuration may include separate network entities that provide communications for different cell groups for different RATs, where dynamic power control may be implemented across RATs. Additionally, or alternatively, a multi-RAT carrier aggregation techniques may provide separate component carriers configured for carrier aggregation, where different component carriers that use different RATs. Combinations of DC and carrier aggregation may be provided, in which a cell group of a DC configuration may include multiple component carriers in a carrier aggregation scheme.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, control signaling indicating a set of sub-bandwidth part (BWP) channel configurations for wireless communications at the UE, where each sub-BWP channel configuration of the set of sub-BWP channel configurations may include one or more sets of resources spanning at least a portion of a respective BWP in the frequency domain. The UE may receive, from the base station, a control message indicating a first sub-BWP channel configuration of the set of sub-BWP channel configurations, the first sub-BWP channel configuration supporting wireless communication for a full-duplex communication mode and a half-duplex communication mode. The UE may communicate with the base station during a first transmission time interval (TTI) using the first sub-BWP channel configuration indicated via the control message and based on the full-duplex communication mode or the half-duplex communication mode.

Abstract: A UE may identify, while a second radio of the UE is on, a potential communication associated with a first radio of the UE. The potential communication may be independent from an indication received via the second radio. The UE may select whether to execute the potential communication. Executing the potential communication may be associated with switching on the first radio. A single radio between the first radio and the second radio may be switched on at a time. The first radio of the UE may be a main radio. The second radio of the UE may be a wakeup receiver.

Abstract: Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive RACH configuration information on a downlink carrier of a first set of carriers, wherein the RACH configuration information pertains to the first set of carriers and to a second set of carriers; and selectively perform a RACH procedure with regard to the first set of carriers or the second set of carriers based at least in part on the RACH configuration information. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a resource configuration for a random access (RA) procedure. The resource configuration may identify multiple sets of transmission resources corresponding to multiple radio resource control (RRC) states. The UE may identify an RRC state and may determine a set of transmission resources and/or a transport format based on the indication of the resource configuration, the identified RRC state, and/or a UE identifier (UE ID). The UE may transmit a first RA procedure message (e.g., a msgA) using the determined transmission resources and/or transport format. The base station may receive the message and may identify the RRC state of the UE based on the first message and transmitted indication of the resource configuration. The base station may transmit a second RA procedure message (e.g., a msgB), which the UE may receive.

Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for enabling a wireless system implementing multicast transmissions to control feedback reports from multiple user equipments (UEs) and to address feedback codebook misalignment issues. In particular, aspects provide for multicast transmission grants including multiple feedback timing indicators (K1) in which the multicast transmission grants are configured to configure different UEs for multicast transmission feedback reporting in which feedback codebooks transmitted in various uplink control transmission occasions from the different UEs have a same size. Other aspects and features are also claimed and described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a non-terrestrial network (NTN) entity, a message that is associated with an uplink grant. The UE may select, based at least in part on the message, either a cell-specific offset or an updated offset that is indicated after initial access, as a timing offset that accounts for a propagation delay between a base station of the NTN and the UE. The UE may transmit, to the NTN entity, an uplink communication using the timing offset. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a configuration message that indicates a radio resource allocation and a transmission scheme for one or more first configured grant-small data transfer (CG-SDT) occasions and one or more second CG-SDT occasions. The one or more second CG-SDT occasions are at least partially nested, in time, frequency, or a combination thereof, within the one or more first CG-SDT occasions. The UE may therefore transmit, to the base station, an uplink communication within the one or more first CG-SDT occasions or the one or more second CG-SDT occasions, using the radio resource allocation and the transmission scheme. Numerous other aspects are provided.

Abstract: Apparatus, methods, and computer-readable media for managing HARQ-ACK processes in wireless user equipment (UEs) allow selective compression of HARQ-ACK information within HARQ-ACK codebooks. A wireless base station may transmit control information including scheduling information for K downlink transport blocks for a UE, and may signal bundling rules for selectively compressing an original HARQ-ACK codebook of size K into a constrained HARQ-ACK codebook of size N<K. Bundling rules can include the maximum codebook size N, a number M of bits that should not be bundled, criteria for bundling a plurality of the K?M bits into N?M bits, etc. The UE can apply a logical AND operation to ACK/NACK bits to produce one or more representative bundled bits. The base station identifies and schedules retransmission of packets associated with all of a bundled set of A/N bits if their representative bundled bit is NACK.

Abstract: Techniques for signaling varied modulation and coding schemes for wireless communication are discussed. A method of wireless communication may comprise receiving, by a user equipment (UE), an indication to apply a modulation order cap to determine a first modulation and coding scheme for transmission of uplink control information different from a second modulation and coding scheme for transmission of data. The method may further comprise transmitting the uplink control information using the first modulation and coding scheme, wherein the first modulation and coding scheme is determined based, at least in part, on the received indication to apply the modulation order cap.

Abstract: Aspects directed towards sounding reference signal (SRS) antenna switching are disclosed. In one example, an SRS configuration is received from a network in which at least four antennas of a scheduled entity are configured based on the SRS configuration. Here, the SRS configuration configures at least one antenna to simultaneously support SRS antenna switching and an uplink (UL) multiple-input multiple-output (MIMO) communication. An SRS communication is then transmitted according to the SRS configuration. In another example, a transmission capability reporting is received from a scheduled entity comprising at least four antennas. A determination is then made of whether the scheduled entity may simultaneously support SRS antenna switching and an UL MIMO communication. An SRS configuration is then generated for the scheduled entity based on the determination in which a default SRS configuration configures at least one antenna to simultaneously support the SRS antenna switching and the UL MIMO communication.

Abstract: Methods, systems, and devices for wireless communications are described that provide for an indication of a channel state by a user equipment (UE) that can be used to select transmission parameters for a downlink broadcast transmission. A network entity may transmit a first downlink transmission that may be received at a UE and used to measure a channel quality at the UE. The UE may transmit an uplink communication that provides an indication of the channel quality. The network device may receive the uplink communication, determine one or more transmission parameters for a broadcast downlink transmission based on the indication of the channel quality, and transmit the broadcast downlink transmission.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, using a set of resources that are shared between a first radio access technology (RAT) and a second RAT, control signaling that includes a dynamic spectrum sharing (DSS) configuration for a shared data channel. The UE may receive one or more indicators associated with the first RAT, the second RAT, or both, to coordinate communications for the shared set of resources. The UE may communicate with the network using the first RAT or the second RAT based on applying one or more of the indicators. To further support DSS, the UE may transmit UE capability information to indicate whether the UE is capable of DSS for the first RAT and the second RAT, and may apply one or more multiplexing modes for communications using the first RAT and the second RAT.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from another UE, a coordination message that includes resource information (e.g., a preference status) for communication resources. The UE receiving the coordination message may determine a status of one or more resources based on the resource information, an intended recipient of the coordination message (e.g., based on a destination identifier of the coordination message), or a communication connection associated with the one or more resources. The status may indicate that a respective resource of the one or more resources is available, reserved, preferred, or non-preferred, or some combination thereof. In some examples, the one or more resources may be for a sidelink connection or a unicast connection. The receiving UE may utilize the determined status to select one or more resources for a sidelink transmission.

Abstract: Methods, systems, and devices for wireless communications are described for channel measurements for multiple uplink carriers in carrier aggregation (CA). A CA configuration may provide a first downlink carrier, a first uplink carrier, and a second uplink carrier. The second uplink carrier may be a supplemental uplink (SUL) carrier that does not have an associated downlink carrier in a same frequency band. A measurement downlink carrier may be configured and associated with the second uplink carrier, and measurements of a reference resource of the measurement downlink carrier may be used to determine transmission parameters of the second uplink carrier.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a network entity, control signaling that includes sounding reference signal (SRS) configuration information associated with an increased quantity of SRS ports. The SRS configuration information may include a quantity of symbols via which to transmit SRSs, a frequency resource comb for each respective symbol, and a threshold quantity of cyclic shifts. The UE may map a first subset of SRS ports to a first symbol and map a second subset of SRS ports to a second symbol. The UE may transmit, and the network entity receive, the SRSs using the first subset of SRS ports via the first symbol according to a first frequency resource comb and respective cyclic shifts and using the second subset of SRS ports via the second symbol according to a second frequency resource comb and respective cyclic shifts.

Abstract: Methods, systems, and devices for wireless communications are described. For example, a network entity may output, and a user equipment (UE) may receive, a first control message identifying a first discontinuous reception (DRX) cycle and a second, different DRX cycle for the UE to use, the first and second DRX cycles having a first and second active duration, respectively. The network entity may also output a second control message identifying periodic resources for the UE to use to monitor for a periodic signal, the periodic resources being outside at least the first active duration. The UE may monitor for, and the network entity may output, based on the periodic resources being outside the first active duration, the periodic signal during the first active duration based on updating the first active duration, updating the periodic resources, or both.

Abstract: Methods, systems, and devices for wireless communications are described. Techniques are described for providing additional feedback about a channel as part of a feedback procedure. Feedback information associated with a feedback procedure may include two stages of feedback information. Each stage of feedback information may include a different type of information. A first stage may include acknowledgements or negative acknowledgements for each feedback process supported. A second stage may include additional feedback information related to any downlink transmission that was not received successfully and thus included a negative acknowledgement in the first stage. Additionally, or alternatively, the second stage may include additional feedback information related to any downlink transmission that was received successfully and thus included an acknowledgement in the first stage. Techniques are also described for handling the variable size of the feedback information included in the two stages.