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 method performed by a first wireless transmit/receive unit (WTRU) may comprise: receiving configuration information, the configuration information including a set of resource selection methods for a sidelink-position reference signal (SL-PRS) transmission; determining a resource selection method for a SL-PRS transmission, the determination being based on a condition, wherein the resource selection method includes at least one of a full sensing, partial sensing, and random selection; and transmitting, to a second WTRU, information indicating the selected method of SL-PRS transmission.

Abstract: One or more techniques are disclosed herein that provide a method/device/system for addressing unified TCI (UTCI) management and associated technologies. These one or more techniques may generally provide innovation and or improvements to the field of wireless communications. In an example, there may be a process for determining a TCI to use for transmission/reception. There may be cross-carrier scheduling based on a multi-stage UTCI management framework.

Abstract: One or more techniques are disclosed herein that provide a method/device/system for addressing unified TCI (UTCI) management and associated technologies. These one or more techniques may generally provide innovation and or improvements to the field of wireless communications. In an example, there may be a process for determining a TCI to use for transmission/reception. There may be a default TCI, and there may be a determination of when to use the default TCI and what the default TCI is.

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/receive unit (WTRU) may receive configuration information indicating transmissions for a data radio bearer (DRB) associated with sidelink (SL) transmission can be performed in a regular quality of service (QoS) state or in a limited survival time QoS state (LSTQoSS), and a scheduling request (SR) configuration for indicating SL transmission failure for the DRB when in LSTQoSS. The WTRU may use LSTQoSS for the DRB. The WTRU may determine that at least one transport block (TB) including data of the DRB that was transmitted in accordance with the LSTQoSS failed. The WTRU may send a SR in accordance with the SR configuration for indicating SL transmission failure for the DRB when the DRB is in the LSTQoSS if at least one TB including data of the DRB that was transmitted in accordance with LSTQoSS failed. The WTRU may send another transmission for the DRB in accordance with LSQoSS.

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: One or more method/devices/systems are disclosed herein that address problems that arise out of sending feedback in sidelink and/or between devices operating in unlicensed spectrum. For example, in some cases, a first device may need to send a transmission to a second device. The first device may be configured with information such that the first device can determine the necessary parameters to send the transmission using the configured information. In an example, the first device may determine to prioritize one or more instances of feedback.

Abstract: Described herein are one or more methods, systems, and/or devices for uplink control transmission. A wireless transmit receive unit (WTRU) may determine to generate uplink control information (UCI), and may subsequently send to a network entity, for example. In some cases, the UCI may be configured by the network and may also be triggered by the network.

Abstract: A method for use by a wireless transmit/receive unit (WTRU) may comprise: receiving a downlink transmission, decoding the downlink transmission, and determining downlink decoding information (DDI) of the decoded downlink transmission. The DDI may include at least a transmission time of the received downlink transmission. The method may comprise determining to send a DDI report based on at least a priority associated with the downlink transmission. The DDI report may comprise the DDI. The method may comprise: sending a request for uplink resources for sending the DDI report, receiving an allocation of uplink resources for sending the DDI report, and sending the DDI report in the allocated uplink resources. The determining to send the DDI report may be further based on a number of retransmissions of the downlink transmission; channel conditions during the downlink transmission; a received indication requesting the DDI report; or a downlink transmission decoding outcome.

Abstract: A wireless transmit/receive unit, WTRU, receives a plurality of positioning reference signals from a plurality of terrestrial transmission points, the positioning reference signals including at least one positioning reference signal from a first terrestrial transmission point and at least one positioning signal from a second terrestrial transmission point, on condition that at least one value based on first measurements of the plurality of positioning reference signals satisfies a condition, transmits a request to initiate, at the WTRU, positioning using positioning reference signals received from satellites, received, in response to the request, information about a set of satellites, selects at least one satellite from the set of satellites, determines a second position estimate for the WTRU based on at least one positioning reference signal received from at least one selected satellite, and sends to a network node a message comprising information indicating the second position estimate for the WTRU.

Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information that indicates one or more of a first transmission configuration indicator (TCI) state, a second TCI state, a first cyclic prefix (CP) size, a first channel state information-reference signal (CSI-RS) resource set, and a second CSI-RS resource set. The WTRU may determine a first delay spread and a first measurement value associated with a first CSI-RS. The WTRU may determine a second delay spread and a second measurement value associated with a second CSI-RS. The WTRU may send a first indication indicating whether the first delay spread is greater than or less than the first CP size.

Abstract: A method performed by a WTRU may comprise receiving PRS configuration information and performing a first set of measurements based on the PRS configuration. The method may further comprise determining whether to trigger an on-demand PRS request based on the first set of measurements and on-demand PRS criteria. On a condition that the determining to trigger is affirmative, transmitting an on-demand PRS request. In embodiments, the on-demand PRS criteria may be based on an RSRP, TDoA, number of multipaths, accuracy and/or latency.

Abstract: A WTRU may be configured to efficiently utilize redundant resources in a first resource set by transmitting, in a second resource set, a larger number of reference symbols. The WTRU also may report CSIs with a lower code-rate. Based on association rules that provide an indication for utilizing redundant resources, the WTRU may efficiently utilize redundant resources by replacing zero padded bits in the first resource set with transmission parameters in the second resource set. Based on the association rules, the WTRU may dynamically determine a DMRS configuration, a code-rate, a modulation and coding scheme (MCS), and/or CSI quantization parameters.

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: Methods and systems are provided for synchronization signals for a wireless transmit/receive unit (WTRU). The WTRU receive, from a wireless network, a first subset of components associated with a Synchronization Signal Block (SSB). The WTRU further receive configuration information for receiving a second subset of components associated with the SSB based on the first subset of components. The WTRU further receive, from the wireless network, the second subset of components associated with the SSB based on the configuration information; and establish a connection with the wireless network based on the SSB.

Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information. The configuration information may indicate a configured bandwidth for performing positioning reference signal (PRS) measurements. The WTRU may receive a first PRS transmission using a first portion of the configured bandwidth. The first portion of the configured bandwidth may correspond to a first frequency hop associated with the configured bandwidth. The WTRU may receive a second PRS transmission using a second portion of the configured bandwidth. The second portion of the configured bandwidth may correspond to a second frequency hop of the configured bandwidth. The WTRU may determine a PRS measurement based on the first PRS transmission and/or the second PRS transmission. The WTRU may send the PRS measurement and an indication of whether the measurement was based on multiple frequency hops.

Abstract: A wireless transmit/receive unit (WTRU) may select a cell and a synchronization signal block (SSB) associated with the cell, for example based on a reference signal received power (RSRP) measurement. The WTRU may receive configuration information. The configuration information may include a physical random access channel (PRACH) cross-link interference (CLI) threshold and/or one or more time and frequency resources. The WTRU may determine CLI (e.g., a CLI measurement), for example using the one or more time and frequency resources. The WTRU may compare the determined CLI measurement with the PRACH CLI threshold. The WTRU may determine an active mode of operation, for example based on the comparison of the determined CLI measurement to the PRACH CLI threshold. The WTRU may determine the active mode to be subband non-overlapping full duplex (SBFD), for example if the determined CLI measurement is less than the PRACH CLI threshold.

Abstract: This disclosure relates to cell reselection. A wireless transmit/receive unit (WTRU) performs sensing measurements using an initial cell based on an initial cell configuration comprising one or more initial cell reselection conditions. The WTRU may receive configuration information indicative of one or more first cells, one or more second cells having sensing capability, and one or more reselection conditions. The WTRU may determine to perform a cell reselection based on the one or more initial cell reselection conditions. The WTRU may identify one or more candidate cells from the one or more first cells based on one or more performance metrics. The WTRU may select a new cell from the one or more candidate cells by determining whether the one or more second cells comprise the new cell. The WTRU may be configured based on the configuration information and the new cell.