Abstract: A method and WTRU for resource re-allocation is disclosed. A WTRU may be configured to receive a radio network temporary identifier (RNTI) and receive fallback configuration information. The WTRU may be configured to receive an indication. The indication may indicate that a particular resource or set of resources are no longer available. The indication may comprise applicability criteria and applicability resource information. The WTRU may be configured to apply the fallback configuration in resources based on the applicability resource information on a condition that a characteristic of the WTRU matches at least one applicability criteria. The WTRU may be configured to transmit uplink data based on the fallback configuration. The fallback configuration may comprise at least one of: a measurement configuration, a configured grant configuration, a random access channel (RACH) configuration, or a physical downlink control channel (PDCCH) monitoring periodicity configuration.

Abstract: The WTRU may monitor for a downlink transmission in a first monitoring occasion of a first search space. The first monitoring occasion of the first search space may be associated with a first monitoring occasion pattern. The WTRU may monitor for the downlink transmission in a second monitoring occasion of a second search space. The second monitoring occasion of the second search space may be associated with a second monitoring occasion pattern. The first search space and the second search space may belong to a search space subset. The WTRU may receive the downlink transmission in the second monitoring occasion of the second search space. The downlink transmission may include a skipping indication. Based on the WTRU receiving the skipping indication in the downlink transmission in the second monitoring occasion of the second search space, the WTRU may apply skipping to the second search space and the first search space.

Abstract: A device (e.g., a wireless transmit/receive unit (WTRU)) may be configured to perform one or more actions for inactive/idle mobility enhancement based on predicted trajectory. For example, a device may send a predicted trajectory associated with the device. The device may receive configuration information comprising a margin of error associated with a validity of the predicted trajectory. The device may enter a radio resource control (RRC) inactive state based on an indication to transition from an RRC connected state to the RRC inactive state. The device may determine, in the RRC inactive state, a deviation from the predicted trajectory. The device may determine the deviation is not within the margin of error. The device may send an indication (e.g., a resume request) based on the determination that the deviation is not within the margin of error.

Abstract: Systems, methods, and instrumentalities are disclosed herein for enabling beam hopping for satellite beams. For example, a wireless transmit/receive unit (WTRU) may receive a synchronization signal block (SSB) using a non-terrestrial network (NTN) beam. The WTRU may receive at least one of a system information block (SIB) or a beam hopping SIB (BH-SIB). The SIB may include information associated with a set of discontinuous transmission (DTx)/discontinuous reception (DRx) configurations. The BH-SIB may indicate the set of DTx/DRx configurations. A DTx/DRx configuration from the set of DTx/DRx configurations may be associated with one or more NTN beams. The WTRU may determine the set of DTx/DRx configurations based on at least one of the SIB or the BH-SIB. The WTRU may determine an active beam DTx/DRx configuration from the set of DTx/DRx configurations. The WTRU may monitor for a downlink signal during an active time associated with the active beam DTx/DRx configuration.

Abstract: A wireless transmit/receive unit (WTRU) comprises a processor configured to receive configuration information that may include a sounding reference signal (SRS) configuration. The processor may receive a first request to report a number of identifiers that the WTRU supports, send a first report that indicates the number of identifiers that the WTRU supports, send a second report that indicates a first set of identifiers, receive a second request to report one or more conditions of the WTRU, send a third report that indicates a second set of identifiers, and determine whether to send an SRS transmission based on whether one or more of the conditions of the WTRU have changed.

Abstract: Systems, methods, and instrumentalities are described herein related to non-terrestrial network (NTN)-terrestrial network (TN) connected mode mobility in energy saving networks. A device (e.g., wireless transmit/receive unit (WTRU)) may perform actions to avoid radio link failures and/or perform connected mode mobility, for example, if cells (e.g., NTN and/or TN) cells are employing energy saving mechanisms. The device may determine and/or wake up suitable cells, for example, if a serving cell is not suitable. The serving cell and a target cell may use different energy saving mechanisms. The device may provide assistance information to a network. The network may wake up suitable cells for the device to monitor and perform mobility.

Abstract: Systems and methods are described for QoS procedures supporting verticals in wireless systems. Data flows may combine or remap for QoS remapping conditions or state transitions. Data flow remapping may be indicated by triggering a BSR/SR or by multiplexing in the PDU. A non-default set of LCP parameters may be applied for an LCH after a QoS state transition, QoS remapping trigger, or LCP parameter suspension/override. A WTRU may operate according to a QoS adaptation state corresponding to a set of parameter values for a group of data flows, radio bearers, and/or logical channels. A WTRU may transition between QoS adaptation states. An RRC configuration and/or a MAC function may adapt to changing QoS requirement(s). QoS requirement(s) may adapt to changing MAC functions. QoS may be associated with survival time(s). QoS may adapt to higher layer indications. Packet forwarding may adapt to QFI in DL for QoS state changes.

Abstract: Systems, methods, and instrumentalities are described herein that may be associated with early data transmission in enhanced coverage using diversity slotted aloha in non-terrestrial networks. A device may be configured to receive broadcast configuration information. The broadcast configuration information may include a first condition and a second condition. A first coverage level may be determined based on whether the first condition is satisfied. A random-access configuration associated with the first coverage level may be selected based on the broadcast configuration information and based on whether the second condition is satisfied. Based on a determination that the random-access configuration enables a preamble-less early data transmission (EDT), the WTRU may determine at least at one physical uplink shared channel (PUSCH) resource allocation parameter. The random-access configuration and the PUSCH at least one resource allocation parameter may be transmitted using the preamble-less EDT.

Abstract: The present system and method provide mobility enhancements, network energy savings, RRC Re-establishment, and RRC Resume. For example, a WTRU in CONNECTED state configured to perform RRC Resume procedure (e.g., provided with resume identity, next hop chaining count, etc.), upon detecting the fulfilment of triggering conditions, such as RLF. For example, a WTRU configured to perform the Resume procedure if the is a cell within a certain configured group of cells (e.g., alternate/equivalent cells) that satisfies a condition (e.g., signal level above a certain threshold), For example, a WTRU, upon performing RRC Resume procedure while in CONNECTED mode, being provided with parameters for subsequent resume (e.g., new resume identity, next hop chaining count, etc.), and/or candidate cells that can be used for resumption (e.g., new/updated list of alternate/equivalent cells). For example, a WTRU performing the RRC Resume procedure at an alternate/equivalent cell, using small data transmission (SDT) resources.

Abstract: Systems, methods, and instrumentalities are described herein for beam failure detection and recovery for layer 1 (L1) mobility. A wireless transmit/receive unit (WTRU) may be configured to receive configuration information and an indication of at least one condition to perform beam failure recovery (BFR) via the a L1/L2 mobility (LTM) candidate cell. The WTRU may detect a serving cell beam failure. Based on the detection of the serving cell beam failure, the WTRU may determine whether at least one condition to perform BFR via the LTM candidate cell is fulfilled. The WTRU may perform BFR via the LTM candidate cell based on the at least one condition being fulfilled.

Abstract: In an embodiment, a method implemented in a WTRU comprises receiving, from a source cell, a first message comprising information indicating a configuration including resources for measurement on RSs of the source and of a target cells; wherein resources for measurement on RSs contain a timing reference; receiving RSs from the source and from the target cells; performing a time difference measurement between source cell RSs and target cell RSs; on condition that the measured time difference is within a threshold amount from zero: transmitting, to the source cell, a second message comprising information indicating the measured time difference between the source and the target cell RSs; receiving, from the source cell, a third message comprising information indicating downlink scheduling resources on the target cell; and receiving, from the target cell, a fourth message comprising information indicating release of configuration associated with the source cell.

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for network access in a wireless communications system using common signaling, such as synchronization signals, for multiple Radio Access Technologies (RATs). A wireless transmit/receive unit, WTRU, performs a cell search in the system, obtains first information indicative of whether spectrum sharing is configured in a cell discovered in the cell search and of available radio access technologies, RATs, in the discovered cell, in case the first information indicates that spectrum sharing is configured in the discovered cell, determines which of the of available RATs to access, obtains access configuration parameters for the determined RAT to access, and performs, using the access configuration parameters, a random-access procedure to access the RAT.

Abstract: In one method, a wireless transmit receive unit (WTRU) receives a SSB and/or one or more SIBs through a wide beam from a non-terrestrial network (NTN) satellite. The decoded SIBs may provide a set of reference locations for narrow beams and several RACH configurations (or SSB-to-RACH occasion (RO) mappings) for narrow beams provided against reference timings and satellite location. The WTRU determines a suitable RACH resource based upon one or more of (i) WTRU location, (ii) reference locations for narrow beams, (iii) current time, (iii) reference timings for RACH configurations (or SSB-RO mappings) and (iv) satellite location. The WTRU transmits RACH over the determined RACH resource. In some embodiments the SIBs are received in a narrow beam based on SSB MIB information.

Abstract: Systems, methods, devices, and instrumentalities are described herein related to conditional triggers for flight path update indications. A wireless transmit/receive unit (WTRU) may receive configuration information. The configuration information may indicate a trigger condition (e.g., threshold) associated with enabling transmission of a flight path update indication. The WTRU may determine that the threshold associated with enabling transmission of the flight path update indication is satisfied. Based on the threshold being satisfied, the flight path update indication may be transmitted. The WTRU may receive a request to transmit the updated flight path information and transmit the updated flight path information.

Abstract: Systems, methods, and instrumentalities are described herein associated with low overhead reconfiguration. For example, cell configuration may be associated with low overhead reconfiguration. Low overhead reconfiguration may include performing reconfiguration based on one or more of a cell type, a wireless transmit/receive unit (WTRU) profile, a parameter mask, or stored candidate cell configuration information.

Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information. The configuration information may include radio link problem prediction parameters and/or associated radio link recovery actions. The WTRU may monitor radio link conditions. The WTRU may predict, based on the radio link problem prediction parameters and/or the radio link conditions, an occurrence of a radio link problem within a period of time. The WTRU may determine that the prediction of the occurrence of the radio link problem is partially and/or fully fulfilled within a time window before or after the predicted period of time. The WTRU may perform the associated radio link recovery action based on the determination that the prediction of the occurrence of the radio link problem is partially and/or fully fulfilled within the time window before or after the predicted period of time.

Abstract: A wireless transmit/receive unit (WTRU) is configured to receive information that indicates a first number of nominal repetitions and a first number of symbols for transmission in each of the first number of nominal repetitions. The WTRU is configured to determine a set of symbols associated with a first nominal repetition of the first number of nominal repetitions. The WTRU is configured to transmit, based on the set of symbols associated with the first nominal repetition, a second number of actual repetitions in symbols associated with the first nominal repetition. The second number of actual repetitions and the symbols used to transmit the second number of actual repetitions are based on an occurrence of an event during the set of symbols associated with the first nominal repetition and based on whether a channel occupancy is initiated by the WTRU or whether the channel occupancy is initiated by a network entity.

Abstract: A wireless transceiver/receiver unit (WTRU) comprises a processor configured to receive configuration information. The configuration information may include a plurality of associated identification (ID) groups, one or more associated identifiers (IDs) associated with each associated ID group of the plurality of associated ID groups, and/or a plurality sets of radio resource control (RRC) configurations, where each set of RRC configurations is associated with an associated ID. The processor may be configured to receive indication that an associated ID group of the plurality of associated ID groups is associated with one or more cells, activate a first cell using a first set of RRC configurations of the plurality of sets of RRC configurations, receive an activation message to activate a second cell, and perform an activation procedure.

Abstract: A WTRU comprising a processor is provided. The processor is configured to receive a configuration of an associated ID and a set of sub-associated IDs related to the associated ID. The associated ID represents a network condition. Each of the set of sub-associated IDs represents at least one of a functionality or a transmission scenario. The processor is further configured to determine applicability of the associated ID based on the configuration. The determined applicability corresponds to full applicability based on the associated ID being applicable for each of the set of sub-associated IDs. The applicability corresponds to partial applicability based on the associated ID being applicable for at least one of the set of sub-associated IDs. The processor is further configured to apply the associated ID to perform at least one of the functionality or the transmission scenario based on the determined applicability.

Abstract: Methods, architectures, apparatuses, and systems directed to discontinuous reception (DRX) are described herein. In an embodiment, a method implemented in a wireless transmit/receive unit (WTRU) may include receiving configuration information indicating (1) a downlink control information (DCI)-based indication of hybrid automatic repeat request (HARQ) state and (2) a first HARQ state associated with a HARQ process. The method may include performing a first discontinuous reception (DRX) operation based on the first HARQ state. The method may include receiving a DCI and determining that the DCI may indicate a second HARQ state associated with the HARQ process, based on the configuration information indicating that DCI-based indication of HARQ state may be enabled. The method may include performing a second DRX operation associated with the HARQ process based on the second HARQ state.