Abstract: A WTRU may be configured to receive a first configuration information indicating a first number of code block groups (CBGs), receive a first DL scheduling information, and receive the first TB. The first TB may be comprised of the first number of CBGs. The WTRU may be configured to transmit a HARQ-ACK or a HARQ-NACK for each of the first number of CBGs, determine a second number of CBGs based on at least one of: a measurement, a current rate of ACK-to-NACK, or an estimation of packet delay or latency, determine a precision metric associated with the second number of CBGs, receive a second configuration information indicating a third number of CBGs, receive a second DL scheduling information that indicates a transmission of a second TB, receive the second TB, and transmit a HARQ-ACK or HARQ-NACK for each of the third number of CBGs.

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for measurement for beam failure recovery. A Wireless Transfer/Receive Unit, WTRU, determines beam failure for at least one beam, wherein beam failure is determined based on an estimated value for a beam of a second type, for a beam of a first type, on a measured value in case transmitted data was received within a time window and on an estimated value otherwise, and, upon determining a number of beam failures, determines a beam for transmission and, in case the beam for transmission is of the first type, transmits using a contention-based resource and, in case the beam for transmission is of the second type, transmitting using a contention-free resource.

Abstract: A wireless transmit receiver unit (WTRU) receives mismatch configuration information for two-sided artificial intelligence machine learning (AIML) to support network-side measurement and detection of mismatch between channel state information (CSI) reconstructed at the network-side and CSI estimated at the WTRU-side. The WTRU transmits to a base station, a test vector in response to a trigger and receives, from the base station, an indication of CSI mismatch based on the transmitted test vector. The WTRU performs a CSI mismatch mitigation method in response to the received indication. The configuration information may include one or more test vector types, a set of test vectors associated with the one or more test vector types, one or more metrics to monitor and one or more mismatch mitigation methods. The trigger to send the test vector may be one of a period of time or an occurrence of a monitored metric exceeding a configured threshold.

Abstract: A wireless transmit receiver unit (WTRU) using two-sided models for channel state information (CSI) feedback receives, from abase station, configuration information including parameters to perform eigenvector (EV) based channel state information (CSI) compression, a precoding gain threshold to determine an input/output (I/O) mismatch event and a reporting configuration for compressed CSI feedback. The WTRU receives CSI-RSs, determines CSI including a first rank indicator (RI) and first channel quality indicator (CQI) and performs EV based CSI compression the CSI. The WTRU reports the first RI and CQI and the compressed CSI associated with a first precoder and receives one or more RSs precoded by the base station with a second precoder to determine an effective precoding gain based on the precoded RSs. The WTRU determines a second RI and second CQI when the determined effective precoding gain is below the configured precoding gain threshold.

Abstract: A wireless transmit receiver unit (WTRU) using two-sided models for channel state information (CSI) feedback is configured to determine input/output CSI mismatch between the CSI reconstructed at the NW-side and the CSI estimated at the WTRU-side. The WTRU receives configuration information including a CSI mismatch measurement method, a CSI mismatch measurement metric and one or more thresholds for CSI mismatch detection. The WTRU receives one or more CSI reference signals (CSI-RSs) and estimates CSI. The WTRU determines a CSI mismatch event when a mismatch measurement exceeds a first CSI mismatch detection threshold. The WTRU selects a CSI mismatch mitigation method as a function of the I/O CSI mismatch measurement and reports CSI feedback for the received CSI-RSs and CSI mismatch information including at least one of: the I/O CSI mismatch measurement, an indication of the determined CSI mismatch event, or the selected CSI mismatch mitigation method.

Abstract: The WTRU may use the reference signals received during a look-ahead window to determine a CSI prediction accuracy (?) by computing the relative difference between the measured CSI and the predicted CSI with respect to received CSI-RSs. The WTRU compares the current measured CSI prediction accuracy in the look-ahead window i to a configured prediction accuracy threshold to determine the preferred number of CSI-RS K(i+1) to receive in the next look-ahead window i+1. If the determined accuracy is high, relative to a minimum threshold, the number of CSI-RS transmissions may be reduced in the next look-ahead window. If the determined prediction accuracy is low, relative to the minimum threshold, the WTRU may request an increased number reference signals for the next look-ahead window for improving the accuracy of prediction in the next, or set, of look-ahead window(s). Updated predicted CSI and accuracies may be reported to the gNB.

Abstract: A method may be implemented by a wireless transmit/receive unit (WTRU), including receiving a data collection configuration. The data collection configuration may include an indication of measurement resources and an identifier associated with a WTRU-side or network-side artificial intelligence/machine learning (AIML) data collection. Data collection may be performed based on the data collection configuration. It may be determined that the WTRU cannot continue to collect data in accordance with the data collection configuration. An indication that the WTRU cannot continue to collect data in accordance with the data collection configuration may be sent to a network. An indication for a measurement gap configuration may be received from the network. Data collection may resume based on the data collection configuration and in accordance with the measurement gap configuration.

Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information to determine beam prediction accuracy. The configuration information may include an indication associated with at least one transmission configuration indication (TCI) state, a first channel state information (CSI) report configuration associated with a first set of reference signal (RS) resources to predict measurements, and/or a second CSI report configuration associated with monitoring a second set of RS resources. The WTRU may activate the second set of RS resources to monitor based at least on the indication of the at least one TCI state. The WTRU may start a performance evaluation counter to determine the beam prediction accuracy. The WTRU may predict the measurement(s) in accordance with the first CSI report configuration. The WTRU may determine the beam prediction accuracy based on the configuration information, the performance evaluation counter, and/or the first and/or the second set of RS resources.

Abstract: A wireless transmit/receive unit (WTRU) comprises a processor configured to receive configuration information. The configuration information may include, for example, an indication of a plurality of compressed channel state information (CSI) symbols (CCS) reporting modes, where each CCS reporting mode of the plurality of reporting modes may indicate a respective channel for reporting CCS symbols. The processor may be configured to determine a CCS reporting mode out of the plurality of CCS reporting modes. The processor may be configured to generate CCS symbols based on CSI reference signal (CSI-RS) measurements. The processor may be configured to determine a CCS reporting configuration based on the CCS reporting mode. The CCS reporting configuration may indicate, for example, resources of the channel associated with the CCS reporting mode. The processor may be configured to send a report via the resources of the channel associated with the determined CCS reporting mode.

Abstract: Disclosed herein is a reader, AIOT device, and methods thereof for handling AIOT device-originated autonomous data transmission. Details include a reader transmitting a first preamble sequence of a set of preamble sequences. The reader receives at least one preamble sequence of the set of preamble sequences. The reader then determines whether a single preamble sequence or multiple preamble sequences are received. Based the received preamble(s), the reader sends a message indicating that one or more AIOT devices are to perform contention-based or contention-free random access.

Abstract: A method may be implemented by a wireless transmit/receive unit (WTRU), including receiving information indicating first applicability conditions and a first configuration for a first artificial intelligence or machine learning (AIML) model category and second applicability conditions and a second configuration for a second AIML model category. It may be determined whether the first AIML model category is applicable to a cell based on the first applicability conditions and first configuration, and whether the second AIML model category is applicable based on the second applicability conditions and second configuration. A report may be sent indicating applicability of the first AIML model category and second AIML category to the cell. It may be determined that the first AIML model category is no longer applicable based on the first configuration. An indication that indicates that the first AIML model category is no longer applicable to the cell may be sent.

Abstract: A WTRU may receive configuration information indicating a first AI/ML CSI report configuration, a second AI/ML CSI report configuration, a first CSI reporting configuration type associated with the first AI/ML CSI report configuration, and/or a second CSI reporting configuration type associated with the second AI/ML CSI report configuration. The WTRU may determine a first priority associated with each CSI report configuration based on a prediction accuracy associated with each AI/ML CSI report configuration and/or each CSI reporting configuration types. The WTRU may determine a second priority based on the first and second AI/ML CSI report configurations being activated for the same usage. The second priority may be determined based on whether the prediction accuracy of each AI/ML CSI report configuration is above a threshold and/or one or more configurations associated with each AI/ML CSI report configuration.

Abstract: A wireless transmit/receive unit (WTRU) may receive a first associated identifier (ID) function and/or one or more validation conditions. The first associated ID function may be associated with a set of time-varying characteristics of a first non-terrestrial network (NTN) communication channel. The WTRU may determine whether the one or more validation conditions are satisfied. The WTRU may determine a first set of values associated with the first associated ID function and based on the one or more validation conditions being satisfied. The first associated ID function may be associated with a first time period of an AI/ML model. The WTRU may determine a second set of values associated with the first associated ID function and based on the one or more validation conditions being satisfied. The first associated ID function may be associated with a second time period of the AI/ML model. The WTRU may send a report.

Abstract: A WTRU receives, configuration information including: a set of reference signals (RSs) for channel state information (CSI) prediction; one or more CSI prediction parameters including a set of lengths (L) and resources of one or more prediction windows; one or more prediction accuracy thresholds; and one or more sets of resources for CSI reporting. The WTRU receives and measures RSs associated with the configured set of RSs and determines predicted CSI values for resources of one or more configured prediction windows and determines preferred CSI prediction parameters as a function of measurements of the received RSs and configured prediction accuracy threshold(s). The WTRU reports, to the base station, using the configured one or more sets of resources for CSI reporting, the determined preferred CSI prediction parameters and the determined predicted CSI values for one or more subsequent prediction windows. Additional embodiments are disclosed.

Abstract: A WTRU may receive configuration information for channel state information (CSI) feedback and a first CSI reference signal (CSI-RS) transmission. The processor is configured to determine a first subset of beams associated with the first CSI-RS transmission and a second subset of beams associated with the first CSI-RS transmission. The first subset of beams is associated with: a longer validity time than a validity time of the second subset of beams, a lower beam range than a beam range of the second subset of beams, and/or a smaller difference between beam indices associated with consecutive beam domain reporting instances than a difference between beam indices associated with the second subset of beams. The processor may send one or more reports that include an indication of the first and second subset of beams and first and second parameters associated with the first and second subset of beams, respectively.

Abstract: Methods for determining candidate beams for beam failure recovery are provided herein. A method performed by a wireless transmit/receive unit (WTRU) includes receiving configuration information for receiving a first set of reference signals that are associated with a first set of beams, receiving configuration information for receiving a second set of reference signals that are associated with a second set of beams, and one or more criteria for candidate beam selection. The method includes receiving at least one of the first set of reference signals. The method includes transmitting information indicating a selected third set of beams that satisfy the received criteria for candidate beam selection. The selected third set of beams is a suggested set of candidate beams to be monitored for beam failure recovery. The third set of beams is selected based on beam quality measurements of one of the first set of reference signals.

Abstract: A WTRU may send an indication to a network entity. The indication may include an indication that the WTRU is configured to support WTRU configuration adaptation related to one or more communication capabilities. The WTRU may receive a plurality of configurations. The plurality of configurations may be associated with the one or more communication capabilities. The WTRU may apply a first configuration associated with the one or more communication capabilities. The WTRU may determine to change the first configuration based on a change in a WTRU status, for example by at least a threshold amount. The WTRU status may be associated with one or more of power and/or processing resources. The WTRU may apply a second configuration based on the determination to change the first configuration. The WTRU may send an indication that the second configuration has been applied to the network entity.

Abstract: A wireless transmit/receive unit (WTRU) may be configured to perform measurements and measurement predictions in an idle state or an inactive state (e.g., low-power operation mode). The WTRU may perform measurements for the configured idle measurement durations. If the WTRU stays in the idle state or the inactive state for more than a validity duration after it has stopped performing measurements, the WTRU may perform measurement predictions. Upon transitioning to a CONNECTED state (full-power operation mode), the WTRU may report the actual measurements, if they are still valid, or otherwise, report the predicted measurements.

Abstract: A wireless transmit/receive unit (WTRU) may receive a set of channel state information (CSI) report configurations that may be associated with one or more functionalities associated with an AIML model. The WTRU may determine, based on one or more conditions, that a first functionality of the one or more functionalities is non-applicable. The WTRU may transmit a first indication (e.g., via MAC-CE) that the first functionality is non-applicable to the network. The WTRU may start a timer upon determining that the first functionality is non-applicable. The WTRU may transmit one or more CSI reports that include predicted (e.g., inaccurate). The WTRU may determine that the timer has expired, and may transmit a second indication (e.g., via RRC) that the functionality is non-applicable. The WTRU may receive an indication to fallback to non-AIML operation and/or an indication to use an applicable second functionality of the one or more functionalities.

Abstract: The operation of a wireless transmit/receive unit (WTRU) is defined by a configured processor or a method of operation to determine a positioning accuracy requirement based on one or more triggering conditions. The processor sends a request for a positioning reference signal (PRS) configuration and receives one or more PRS transmissions. The WTRU may then receive a request from a network to report a validity area, such as for artificial intelligence or machine learning (AI/ML) positioning. The validity area may be associated with a non-terrestrial network. The determination may be based on the positioning accuracy requirement and a plurality of PRS transmissions. The WTRU may further send a report to the network, wherein the report comprises an indication of at least the validity area for AI/ML positioning.