Abstract: Systems, methods, and instrumentalities are disclosed herein associated with transmission of demodulation reference signals (DMRS) in wireless systems. DMRS symbols may be placed in a slot for channel estimation operations. For example, channel estimation performance may be enhanced based on using an increased number of DMRS symbols. Channel estimation enhancements may be performed by transmitting DMRS symbols in an extended slot, for example, to avoid data degradation (e.g., which may result from replacing data transmission symbols with DMRS symbols). An extended slot may be a slot that includes symbols spanning across multiple slots (e.g., two slots, consecutive slots), for example, such as a slot n and a slot n+1.

Abstract: The disclosure pertains to a method implemented in a Wireless Transmit/Receive Unit (WTRU) for multiple Transmission and Reception Points (TRPs) Power Headroom Reports (PHRs). The method includes sending capability information indicating that the WTRU is configured to support simultaneous multi-panel (SMP) transmission. The method additionally includes determining that a power headroom report (PHR) has been triggered, and receiving downlink control information (DCI) comprising uplink grant information, the DCI indicating a multi-panel mode of operation. The method further includes determining one or more PH values for the PHR, wherein the one or more PH values are determined based on at least the multi-panel mode of operation indicated in the DCI and whether the PHR was triggered based on an SMP PL determination. The method also includes sending the PHR comprising the one or more PH values.

Abstract: A wireless transmit/receive unit (WTRU) may receive a first channel state information (CSI) request and a second CSI request. The WTRU may determine a first active window for the first CSI request and a second active window for the second CSI request. The WTRU may determine, based on a first association rule, a first number of computational units (CUs) needed to process the first CSI request in the first active window and a second number of CUs needed to process the second CSI request in the second active window. The WTRU may determine that the second CSI request is an invalid CSI request based on the first number of CUs, the second number of CUs, and a number of CUs available to the WTRU. The WTRU may determine, based on a second association rule, a number of additional CUs needed to process the second CSI request in an active sub-window.

Abstract: Methods, apparatuses, systems, etc., directed to performing a change of relay are disclosed herein. In an embodiment, a wireless transmit/receive unit (WTRU) may transmit an information for requesting a peak reduction tone (PRT) configuration for reducing a peak to average power ratio (PAPR). In an embodiment, the WTRU may receive an indication of frequency resources to be used for transmitting a PRT signal based on the PRT configuration. In an embodiment, the WTRU may transmit the PRT signal in the frequency resources in addition to an uplink (UL) transmission, wherein the frequency resources for the PRT signal may be allocated based on a set of frequency resources allocated to the UL transmission.

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 WTRU may transmit a first set of capabilities associated with the WTRU and a second set of capabilities associated with a second WTRU. The WTRU may receive a reference signal (RS) configuration that indicates one or more RS parameters for reception, and may receive the RS. The WTRU may determine an aggregation mode of operation. The WTRU may receive one or more channel state information (CSI) reporting configurations that are associated with one or more sub-configurations. The WTRU may select a CSI reporting sub-configuration. The WTRU may transmit a CSI report according to the selected CSI reporting sub-configuration, where the CSI report may include an indication of one or more indexes associated with the selected sub-configuration and an index of at least one of the first set of capabilities and the second set of capabilities.

Abstract: A wireless transmit/receive unit (WTRU) may receive a message from a first cell. The message may include a list of one or more cells, information associated with applicability of one or more artificial intelligence/machine learning (AI/ML) operations, and/or a bias to apply to measurements during cell reselection. The bias may be associated with prioritizing cells in which the WTRU is able to continue one or more AI/ML operations. The WTRU may apply the bias to measurements performed on the second cell based on one or more of the second cell being indicated by the network or the information associated with applicability of the one or more AI/ML operations of the second cell being the same as information associated with applicability of the one or more AI/ML operations of the first cell. The WTRU may reselect to the second cell based on the biased measurements.

Abstract: A wireless transmit/receive unit (WTRU) may comprise a processor. The processor may be configured to handle data collection procedures, wherein the data has more than one priority associated with it. For example, the WTRU may be configured to collect data for a first data collection and a second data collection, wherein the first data collection is associated with a first priority and the second data collection is associated with a second priority. The WTRU may make and store measurements for each data collection. The WTRU may store the measurements in a buffer and may mark the data with the appropriate priority. The WTRU may detect when the buffer is full and perform buffer management, for example, by deleting data of lower priority, and/or reporting data.

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products that enable a wireless transmit/receive unit, such as user equipment, to use a single aggregated bandwidth configuration for receiving signals on a first component carrier, a second component carrier, and the frequency gap between the first and second component carriers. The WTRU may measure a parameter associated with the frequency gap, and if the measured parameter satisfies a trigger condition, the WTRU may transmit an indication of the trigger condition or the parameter to the wireless network. In response to such a trigger condition, the WTRU may continue to use the single aggregated bandwidth configuration without change, may mute resources of the first and/or the second component carriers adjacent the frequency gap, and/or may switch to another configuration in which signals on the first component carrier are received separately from signals on the second component carrier.

Abstract: A method may be performed by a wireless transmit/receive unit (WTRU), including receiving a configuration message. The configuration message may include an indication to suspend an artificial intelligence/machine learning (AI/ML) configuration related to an AI/ML operation, conditions to maintain a suspended AI/ML configuration, and conditions to restore the suspended AI/ML configuration upon transition to a first state. The AI/ML configuration may be suspended when the WTRU is in a second state. The suspended AI/ML configuration may be maintained when in the second state. It may be determined that the suspended AI/ML configuration can be restored upon transition back to the first state based on the one or more conditions. An indication may be sent to the network that indicates that the suspended AI/ML configuration can be restored. An indication that the WTRU should resume the AI/ML operation according to the restored AI/ML configuration may be received.

Abstract: A WTRU may send an indication of a maximum number of RSMA layers and/or a maximum number of MIMO layers per RSMA layer. The WTRU may receive a first configuration associated with reception of common messages of rate splitting-based transmission (RS-based-T) and/or a second configuration associated with reception of WTRU-specific messages (WSM) of RS-based transmission. The first configuration may indicate CBG information associated with the common messages of RS-based-T. The second configuration may indicate CBG information associated with the WSM of RS-based-T. The WTRU may receive a downlink transmission that includes a RS-based common message and/or a RS-based WSM in accordance with the first and second configuration. The WTRU may transmit HARQ feedback for the downlink transmission that includes HARQ feedback for the RS-based common message and/or HARQ feedback for the RS-based WSM.

Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information for a first cell and/or a second cell. The configuration information may comprise first and/or second network side conditions associated with the first cell and/or second cell. The WTRU may determine an applicability of an artificial intelligence or a machine learning (AI/ML) model to the first cell based on the first network side conditions associated with the first cell, and/or applicability of the AI/ML model to the second cell based on the second network side conditions associated with the second cell. The WTRU may send a first indication to a network device. The indication may indicate the applicability of the AI/ML model to the first cell and/or the applicability of the AI/ML model to the second cell. The WTRU may receive a reference AI/ML configuration for the AI/ML model for the first cell and/or for the second cell.

Abstract: Devices, methods, and systems for switching between power class combinations. An indication of a plurality of aggregated power class (PC) configurations is transmitted. Each of the plurality of aggregated PC configurations indicates respective maximum power and duty cycle information. A request is transmitted responsive to a triggering event. The request indicates a first aggregated PC configuration of the plurality of aggregated PC configurations. An indication of a second aggregated PC configuration is received in response to the request. A transmission is transmitted with a transmit power or power headroom that is based on the second aggregated PC configuration.

Abstract: A wireless transmit/receive unit (WTRU) may determine, based on received configuration information, that a cell is associated with a first transmit and receive point (TRP) and a second TRP. The first TRP may be associated with a first timing advance group (TAG). The second TRP may be associated with a second TAG. The first TAG may be a primary TAG. The WTRU may determine that a first time alignment timer (TAT) associated with the first TAG has expired. The WTRU may, based on the determination that the first TAT has expired, determine that a timing advance (TA) associated with the second TAG is to be used for a transmission to the cell. The WTRU may send, in accordance with the TA associated with the second TAG, the transmission to the cell.

Abstract: A method performed by a wireless transmit/receive unit (WTRU) may compromise: receiving configured grant (CG) information that includes: a configured grant period, an indication of a number of slots for Transport Block over Multiple Slots (TBoMS), and a mapping pattern; determining, for the CG period, a number of repetitions for a transport block (TB) based on (1) available UL slots in the CG period and (2) the number of slots for TBoMS; and on condition that DMRS bundling is disabled, and the determined number of repetitions is greater than 1, transmitting the TB with the determined number of repetitions where segments of the TB are transmitted according to the mapping pattern for each repetition.

Abstract: Apparatuses and methods are disclosed for panel selection for uplink (UL) transmission in a multi-transmission-reception point (TRP) system. A method performed by a wireless transmit/receive unit (WTRU) may include receiving, for each of a plurality of transmit/receive points (TRPs), information for measuring a first set of reference signals and spatial relation information, the spatial relation information associating each of one or more transmit beams with one or more of a second set of reference signals and with physical uplink control channel (PUCCH) resources. The method may include, for each of the plurality of TRPs, measuring a pathloss of each common reference signal among the first and second set of reference signals. The method may include selecting a transmit beam and a TRP and sending a transmission to the selected TRP. The transmit beam may be associated with an antenna panel of the WTRU.

Abstract: A Wireless Transmit/Receive Unit (WTRU) comprises a processor configured to send a report indicating sounding reference signal (SRS) port grouping capability of the WTRU. The processor is further configured to receive an indication of at least a first SRS port group and a second SRS port group, where each of the first and second SRS port groups is associated with a respective subset of antenna ports. The processor is further configured to estimate a first channel state information (CSI) for the first SRS port group and a second CSI for the second SRS port group, send one or more CSI reports indicating the first estimated CSI and the second estimated CSI, and receive configuration information indicating a codeword (CW) for processing a scheduled transmission using antenna ports of at least one of the first SRS port group or the second SRS port group.

Abstract: The disclosed method and an apparatus are directed to determine an uplink transmission power in in New Radio (NR) systems by a wireless transmit/receive unit (WTRU) for transmitting at least one physical uplink shared channel (PUSCH), using multiple beams toward multiple Tx/Rx points (TRPs). The method includes determining common parameters like a target receive power, a modulation and coding scheme (MCS) specific offset, and a transmit power control (TPC) command parameters common to the multiple beams. The method also includes determining beam-specific parameters like path loss for each beam, a configurable fractional power compensation factor for each beam, and a configurable maximum transmit power level of the each beam, wherein the fractional power compensation factor and the configurable maximum transmit power level for the each beam are determined dynamically or semi-statically based on at least deployment, WTRU mobility, or interference level.

Abstract: The disclosure pertains to a method implemented in a Wireless Transmit/Receive Unit (WTRU) for multiple Transmission and Reception Points (TRPs) Power Headroom Reports (PHRs). The method includes sending capability information indicating that the WTRU is configured to support simultaneous multi-panel (SMP) transmission. The method additionally includes determining that a power headroom report (PHR) has been triggered, and receiving downlink control information (DCI) comprising uplink grant information, the DCI indicating a multi-panel mode of operation. The method further includes determining one or more PH values for the PHR, wherein the one or more PH values are determined based on at least the multi-panel mode of operation indicated in the DCI and whether the PHR was triggered based on an SMP PL determination. The method also includes sending the PHR comprising the one or more PH values.

Abstract: Receivers, such as low-complexity receivers, in a wireless/transmit receive unit (WTRU) are enabled to efficiently transmit, receive, and process signals via sounding reference signal (SRS) port-groups. The WTRU announces its capabilities regarding SRS port-groups to a network. The WTRU receives configuration information associating the WTRU's antennas to SRS port-groups, wherein subsets of the WTRU's antennas are respectively associated with SRS port-groups. The WTRU transmits, receives, and process signals in accordance with the antenna/SRS port-group associations.