Abstract: Aspects of the disclosure relate to devices, wireless communication apparatuses, methods, and other aspects of correcting misalignment for orbital angular momentum beams. In one aspect, a wireless communication apparatus comprises a beamforming network comprising a plurality of antenna ports and a plurality of beam ports, wherein the plurality of antenna ports are positioned for communicating orbital angular momentum (OAM) beams, a plurality of output phase shifters, wherein each output phase shifter is coupled to a corresponding antenna port of the plurality of antenna ports, and control circuitry coupled to the plurality of output phase shifters and configured to select phase shift values for the plurality of output phase shifters to correct a misalignment of the OAM beams.

Abstract: Methods, systems, and devices for wireless communications are described. A first UE may monitor for a system information block (SIB) message from a network entity via an access link. The first UE may transmit, via a sidelink communications link between the first UE and a second UE and based on failure to receive the SIB message via the access link, a SIB sidelink request message. The SIB sidelink request message may include a request to assist the first UE in obtaining the SIB message. The second UE may receive, via an access link and from the network entity identified by the SIB sidelink request message, the SIB message. The second UE may transmit, via the sidelink communications link, an assistance message that includes a SIB payload of the SIB message or joint decoding information associated with the SIB payload in accordance with the SIB sidelink request message.

Abstract: An electronic device having a radio is provided. When the radio boots up, the radio may search for downlink signals transmitted by a wireless base station. The device may generate a narrow set of candidate frequencies over which to search for the downlink signals by leveraging a cyclic prefix autocorrelation property of the downlink signals. Each candidate frequency may have a corresponding center frequency offset (CFO) and symbol boundary timing correction that is used when searching over the narrow set of candidate frequencies. To generate the narrow set of candidate frequencies, control circuitry may generate autocorrelated signals from baseband-shifted input signals over a set of different center frequencies and bandwidths. Searching over the narrow set of candidate frequencies may be significantly faster than performing a full raster scan over all frequencies supported by the radio.

Abstract: Certain aspects of the present disclosure provide techniques for machine learning (ML) based control channel (CCH) resource selection. An example method, performed at a user equipment (UE), generally includes receiving, from a network entity, signaling indicating parameters for configuring a machine learning (ML) model, applying the parameters to configure the ML model, performing channel estimation based on at least one reference signal (RS) measurement, using the ML model to select control channel (CCH) resources to monitor, based on the channel estimation, and monitoring the selected CCH resources for a CCH transmission from the network entity.

Abstract: Certain aspects of the present disclosure provide techniques for allocating downlink channel resource(s) for a device supporting known downlink control information (DCI) values. A method generally includes receiving an indication of one or more DCI fields that indicates to assume a respective value for each of the one or more DCI fields to attempt to decode a downlink control channel candidate; and attempting to decode the downlink control channel candidate to obtain DCI based on the respective value for each of the one or more DCI fields.

Abstract: Methods, systems, and devices for wireless communications at a user equipment (UE) are described. The UE may receive control signaling indicating a plurality of synchronization signal block (SSB) occasions for a plurality of SSB beams and indicating a plurality of random access occasions. The UE may monitor a first SSB beam of the plurality of SSB beams may monitor a plurality of reference signal beams associated with the first SSB beam, where each beam of the plurality of reference signal beams has a narrower beamwidth than the first SSB beam, and where each beam of the plurality of reference signal beams is quasi co-located and frequency domain multiplexed with the first SSB beam. The UE may transmit a random access message during a first random access occasion, the first random access occasion indicating a first reference signal beam selected from the plurality of reference signal beams.

Abstract: Aspects described herein relate to receiving a control information having a field indicating that the control information is for one of multiple events associated with control or triggering without data allocation, obtaining, from the control information and based on the field, an event identifier from an event identifier field indicating a type of control or triggering event associated with the control information, and performing, based on the event identifier, the control or triggering associated with the control information. Other aspects relate to generating and transmitting the control information.

Abstract: Aspects relate to mechanisms for mutual information (MI)-based physical downlink control channel (PDCCH) candidate pruning. A UE may receive a plurality of PDCCH candidates in a search space. Each of the PDCCH candidates includes a demodulation reference signal (DMRS) generated with the same scrambling seed and control information generated with one or more respective UE-specific non-transparent precoding parameters. The UE can prune the PDCCH candidates to identify at least one PDCCH candidate for decoding by generating the log-likelihood ratio (LLR) magnitudes of demodulated PDCCH candidates and calculating the mutual information based on the LLR magnitudes.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. Some aspects relate to channel-condition-based (or channel aware) dedicated grant-free transmission configurations. Some aspects more specifically relate to a configured grant (CG) configuration that is associated with one or more parameters that are selectable (for example, by a user equipment (UE)) in accordance with current channel conditions experienced by the UE. In some aspects, the CG configuration may be associated with one or more rules that can be used to define or otherwise indicate values of one or more parameters for the CG configuration. The UE may transmit one or more communications, via a transmission occasion configured via the CG configuration, in accordance with the one or more values of respective parameters for the CG configuration.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a signal synchronization block (SSB) associated with a network cell, where the SSB includes at least one bit indicating that the network cell provides a fallback system information block (SIB). The UE may receive the fallback SIB, where the fallback SIB is received without using downlink control information. 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 determine a set of recommended base station transmit beams for full duplex operation based at least in part on measurements of a set of base station transmit beams and measurements of self-interference associated with the set of base station transmit beams. The UE may transmit a report that indicates a recommendation to use one or more of the set of recommended base station transmit beams for full duplex operation. 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 generate a sequence-based transmission comprising at least a first payload, the first payload having a size that is based at least in part on whether the sequence-based transmission comprises the first payload without a second payload or comprises the first payload and the second payload. The UE may transmit the sequence-based transmission to a network node. Numerous other aspects are described.

Abstract: A method of wireless communication includes transmitting, by a wireless communication device, a first Synchronization Signal Block (SSB) transmission during a first slot. The method further includes transmitting, by the wireless communication device, at least a second SSB transmission during the first slot, the second and all other optional SSB transmissions on the first slot carry the same data as the first SSB transmission. The SSB transmissions are transmitted using spatially separated beams. 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 network entity may receive an indication of a capability to perform a beam refinement procedure that includes receiving multiple reference signals, via multiple beams using frequency division multiplexing, during a single reference signal burst. The network entity may transmit the multiple reference signals during the single reference signal burst using frequency division multiplexing. Numerous other aspects are provided.

Abstract: Aspects of the disclosure relate to reporting and correcting a spatial misalignment of an orbital angular momentum (OAM) waveform communicated from a second device to a first device. In an aspect, the first device receives from the second device, the OAM waveform having a spatial misalignment with respect to the second device. The first device determines the spatial misalignment and further determines spatial coordinates for correcting the spatial misalignment and/or one or more channel measurements of the OAM waveform. Thereafter, the first device sends a report based on the spatial misalignment to the second device, the report including the spatial coordinates for correcting the spatial misalignment and/or the one or more channel measurements. The first device then receives an adjusted OAM waveform from the second device, wherein the adjusted OAM waveform is received having a corrected spatial alignment with respect to the second device based on the report.

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may receive a message from a network entity that indicates a channel-based resource selection procedure for one or more feedback messages. The channel-based resource selection procedure may be based on one or more channel estimates. The channel-based resource selection procedure may include a resource selection rule, a neural network (NN) algorithm, an explicit resource allocation, or a combination thereof. The UE may receive a downlink message via a downlink channel. The UE may transmit, on a set of resources associated with an uplink channel, one or more feedback messages that indicate whether the downlink message was successfully decoded. The set of resources may be based on the one or more channel estimates in accordance with the channel-based resource selection procedure.

Abstract: A lens antenna array system for wireless communication is provided that includes a transmitter having a first lens and a receiver having a second lens. The transmitter transmits a first plurality of RF signals across a plurality of near-field communication links to the receiver. Based upon a first signal quality determination at the receiver, the transmitter adjusts a plurality of gains to increase a signal quality for a second plurality of RF signals transmitted across the plurality of near-field communication links.

Abstract: In some examples of the techniques described herein, a network entity may transmit a last transmission indication for a channel grant. The last transmission indication may indicate a last transmission (e.g., last packet of a retransmission) of a current data transmission to be communicated. In some approaches, the last transmission indication may allow a user equipment (UE) to improve a residual physical downlink shared channel (PDSCH) block error ratio (BLER) by prioritizing handling of a last transmission. Additionally, or alternatively, the UE may increase memory (e.g., buffer) utilization efficiency by deleting data stored for retransmission. In some examples, the UE may reduce power consumption by skipping a retransmission timer in connected mode discontinuous reception (C-DRX) without a forthcoming retransmission. In some scenarios, the UE may utilize the last transmission indication to determine whether received data corresponds to a retransmission or to a new transmission.

Abstract: Aspects relate to transmission configuration indicator (TCI) state configuration in multi-stream communication between a radio access network (RAN) entity and a user equipment (UE). The UE may obtain a respective beam quality metric for each transmit beam of a plurality of transmit beams associated with the RAN entity and transmit a beam report to the RAN entity including a respective beam quality metric for each of the transmit beams. The RAN entity may then group the plurality of transmit beams into a plurality of beam groups based on the beam report and transmit a plurality of TCI state groups, each corresponding to a respective one of the beam groups, to the UE.

Abstract: Certain aspects of the present disclosure provide techniques for Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for determining a minimal list size to use in list decoding operations for reducing resource consumption (e.g., compute, memory, and power) at a decoder. A method includes receiving a codeword comprising a plurality of channel bits encoded with an error-correcting code, the plurality of channel bits comprising, at least, a plurality of information bits, determining a payload size of the codeword, determining a channel capacity metric for the plurality of channel bits, determining a minimal list size for a list decoding operation based on at least the payload size and the channel capacity metric; and performing the list decoding operation on the codeword based on the minimal list size to obtain the plurality of information bits.