Abstract: A UE may determine a number of antenna ports associated with a frequency band that includes one or more CCs. The determined number of antenna ports may be based on a plurality of UL Tx chains for the one or more CCs/frequency band. The UE may switch from a first UL Tx chain to a second UL Tx chain, at least one of which may be associated with the one or more CCs/frequency band. The number of antenna ports may correspond to a maximum number of antenna ports of an individual CC of the one or more CCs, or to a sum of antenna ports of the one or more CCs. For the latter, the number of antenna ports may be limited to an available number of UE antenna ports when the sum of antenna ports is greater than the available number of UE antenna ports.

Abstract: A user terminal includes a receiving section that receives a signal in initial access or random access, and a control section that determines, based on reception of the signal, a specific signal quasi-co-located with a downlink control channel in a specific control resource set associated with a random access search space. According to an aspect of the present disclosure, monitoring of the downlink control channel can be appropriately controlled.

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, an indication that indicates whether a common search space (CSS) is associated with a first type of physical downlink control channel (PDCCH) or a second type of PDCCH. The first type of PDCCH may correspond to a cell-broadcast PDCCH and the second type of PDCCH may correspond to a UE-specific PDCCH. The CSS may be for downlink control information (DCI) with a cyclic redundancy check scrambled by a group radio network temporary identifier (G-RNTI) that schedules a multicast and broadcast service (MBS). The UE may receive, from the base station, the first type of PDCCH or the second type of PDCCH. Numerous other aspects are described.

Abstract: The present invention is designed to communicate using data channel multiplexing methods that are suitable for the DL and/or the UL in future radio communication systems. According to the present invention, a user terminal has a transmitting/receiving section that transmits and/or receives a control channel, which is mapped to a candidate resource in a search space, and a data channel, which is at least time-division-multiplexed with the control channel, and a control section that controls transmission and/or receipt of the data channel based on at least one candidate resource in the search space.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques may provide for handling of priority indications in scenarios where simultaneous physical uplink control channel (PUCCH)-physical uplink shared channel (PUSCH) is supported. For example, wireless communications systems may configure (e.g., via radio resource control (RRC) signaling) simultaneous PUCCH-PUSCH across two or more carriers, where piggybacking of feedback information on uplink shared channel transmission may be disabled. Further, a grant (e.g., downlink control information (DCI) scheduling a PUSCH transmission) may include a priority index field to indicate a priority associated with a transmission or resources scheduled by the grant. The described techniques may provide for efficient handling of priority indications associated with scheduled transmissions that overlap when simultaneous PUCCH-PUSCH is supported (e.g.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. Some aspects relate generally to power sharing for unused uplink occasions. Some aspects more specifically relate to adjusting dynamic transmit power sharing between a master cell group (MCG) and a secondary cell group (SCG) for an unused uplink occasion that is reported by a user equipment (UE). The UE may transmit an uplink communication (for example, that overlaps in the time domain with the unused uplink occasion) using a transmit power that is determined using the adjusted dynamic transmit power sharing. The UE may allocate at least a portion of a reserved transmit power associated with the unused uplink occasion to the transmit power of the uplink communication. For the transmit power determination of the uplink communication, the UE may assume that the unused uplink occasion is not present (for example, is not transmitted) in the MCG.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station in a wireless communications system. The UE may perform a random access procedure to communicate with the base station. The base station may configure the UE with different sets of preamble parameters for different types of UEs. The UE may generate a random access preamble based on the sets of preamble parameters according to the type of the UE. The base station may indicate a location of the base station to the UE. The UE may identify a location of the UE. The UE may determine a pre-compensation timing based on a distance from the two locations. The UE and the base station may transmit subsequent communication according to the random access preamble, the pre-compensation timing, or any combination thereof.

Abstract: Methods, systems, and devices for wireless communications are described that provide for dynamic cell activation and deactivation. A network entity may configure one or more cells for dynamic activation and deactivation, and a UE may provide information to the network entity to allow efficient scheduling and cell activation and deactivation. A UE may provide a capability indication of support for dynamic cell activation and deactivation, along with information such as supported switching times, supported rates of activation and deactivation, a number of cells that can be activated and deactivated, or any combinations thereof. In some cases, a UE may provide UE assistance information to the network, such as in configured periodic reporting, in aperiodic reporting that is activated based on a trigger from the network, in response to a network request, or any combinations thereof.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may order assignment indicator values for transmissions for use by feedback information in a feedback message. The UE may receive, during a monitoring occasion, a first control information over a first serving cell and a second control information over a second serving cell, where each control information schedules a respective transmission for a scheduled serving cell. The UE may order assignment indicator values for the transmissions based on indexes associated with the first and second serving cells (e.g., scheduling serving cells), an index associated with the scheduled serving cell, a start time of the transmissions, or some combination thereof, among other examples. The assignment indicator values may be associated with hybrid automatic repeat request acknowledgement (HARQ/ACK) feedback, such that the UE may use the assignment indicator values to construct and transmit a feedback message.

Abstract: Methods, systems, and devices for wireless communications are described, that provide for configuration and switching between multiple groups of search space sets based on activated serving cells or activated resources for one or more serving cells. An access network entity may configure multiple groups of search space sets, and a user equipment (UE) may monitor for control information in an activated search space set group. A first group of search space sets may be activated based on a serving cell being activated, and the UE may switch to a second group of search space sets when the serving cell is deactivated. Search space set group switching also may be performed based on one or more activated bandwidth parts (BWPs). An access network entity may trigger search space set group switching using explicit signaling, based on cell activation/deactivation, based on a timer, or any combinations thereof.

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently facilitating acknowledgment (ACK) or negative acknowledgment (NACK) feedback from a user equipment (UE) for a set of transport blocks in one or more multicast transmissions from a base station. The UE may determine control channel resources for transmitting the ACK/NACK feedback, and each respective control channel resource may correspond to a distinct subset of the set of transport blocks. Once the UE determines a subset of transport blocks that the UE failed to decode (such as at least one transport block), the UE may determine a respective control channel resource that corresponds to the at least one transport block that the UE failed to decode. The UE may transmit ACK/NACK feedback on the respective control channel resource, which, in some examples, may indicate that the UE failed to decode the subset of transport blocks.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a configuration for communications with a base station on a set of component carriers, the configuration including at least a first set of resources on a first component carrier and a second set of resources on a second component carrier. The UE may receive, from the base station, a downlink control information (DCI) message on the first component carrier, the DCI message including one or more field values indicating that the UE is to release the first set of resources on the first component carrier and the second set of resources on the second component carrier. The UE may determine, based on the received DCI message, that the first set of resources and the second set of resources are released.

Abstract: Method and apparatus for two-stage PDCCH with dynamic DCI size indication. The apparatus receives DCI including a first DCI portion comprising an indication indicating a size of a second DCI portion, and the second DCI portion having the size based on the indication in the first DCI portion. The apparatus transmits or receives communication with a network entity using resources scheduled in the second DCI portion. The apparatus receives RRC signaling indicating a first DCI size of the first DCI portion from a defined set of sizes.

Abstract: Methods, systems, and devices for wireless communications are described for processing downlink control information (DCI) for scheduling multiple cells. A user equipment (UE) may receive indications of a resource set (e.g., one or more search spaces) for downlink control signaling. The resource set may include a first set of candidates for DCI that supports multi-cell scheduling (e.g., cross-cell scheduling) for a set of cells, and multiple second sets of candidates for DCI that supports single-cell scheduling of a respective cell (e.g., self-scheduling, cross-carrier scheduling). The UE may monitor the resource set for DCI that schedules communications (e.g., uplink communications, downlink communications, or both) via the set of cells based on the indications of the resource set. The UE may receive one or more instances of DCI, and communicate via at least one of the cells of the set based on the received one or more instances of DCI.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration, for a multicast broadcast service (MBS) single frequency network (SFN) area, indicating configuration information for one or more multicast traffic channels. The UE may receive, in accordance with the configuration, a physical downlink control channel (PDCCH) communication scheduling an MBS SFN data communication associated with a multicast traffic channel, of the one or more multicast traffic channels. The UE may receive the MBS SFN data communication via a physical downlink shared channel (PDSCH) that is associated with both SFN communications and unicast communications or that is associated with only MBS SFN communications. Numerous other aspects are provided.

Abstract: A user terminal according to one aspect of the present disclosure includes: a receiving section that receives downlink control information using a certain downlink control information format; and a control section that determines activation or deactivation of a secondary cell, based on the downlink control information. According to one aspect of the present disclosure, it is possible to control activation at higher speed.

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for multi-cell scheduling for power saving. A UE may receive a configuration of one or more first parameters for control channel monitoring based on a first type of scheduling and one or more second parameters for the control channel monitoring based on a second type of scheduling. The UE may monitor for DCI of the first type of scheduling based on a first condition of a scheduling cell and switch from monitoring for the DCI of the first type of scheduling to monitoring for the DCI of the second type of scheduling based on a second condition of a scheduled cell. The UE may receive scheduling information for at least one of a PDSCH or a PUSCH based on the second type of scheduling.

Abstract: To configure proper time intervals to meet various communication requirements in radio communication systems, and perform various types of processing in the time interval, a user terminal is provided with a transmitting/receiving section that receives numerology information on numerology, and a control section that controls transmission of an uplink signal and/or reception of a downlink signal, according to a basic time unit determined based on configuration information including the numerology information.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may monitor a downlink channel for one or more downlink control information (DCI) messages, including a first set of DCI messages that schedule a single cell and a second set of DCI messages that schedule a set of cells. The UE may, based on a threshold, perform a first size alignment operation to reduce a quantity of different sizes of DCI messages included in the second set of DCI messages. The UE may then perform a second size alignment operation to further reduce the quantity of different sizes of DCI messages included in the first set of DCI messages based on the first size alignment operation. The UE may determine payload sizes of the DCI when the DCI schedules one or more inactive or dormant cells, which may support efficient decoding and alignment of multiple DCI.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) including a transmission configuration indicator (TCI) field with a value, the value mapping to a set of TCI states for a set of co-scheduled cells. The UE may communicate on the set of co-scheduled cells using the set of TCI states associated with the value of the TCI field. Numerous other aspects are described.