Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE provides information related to multiple Universal Subscriber Identity Modules (USIM) of the UE to a first network.

Abstract: Methods and apparatuses for a User Equipment (UE) to monitor the Physical Downlink Control Channel (PDCCH) appropriately in order to reduce power consumption and perform Contention Resolution for a Random Access (RA) procedure in a Non-Terrestrial Network (NTN). The UE can perform a Msg3 transmission during a RA procedure in a NTN and start a RA contention resolution timer in the first symbol after the end of the Msg3 transmission plus a timing offset. In response to expiry of the RA contention resolution timer, the UE determines whether to consider Contention Resolution not successful based on at least whether the RA contention resolution timer expires during a time duration of the timing offset after a Msg3 retransmission.

Abstract: A method and device are disclosed from the perspective of a first Wireless Transmit/Receive Unit (WTRU). In one embodiment, the method includes the first WTRU triggering a first buffer status report (BSR), wherein the first BSR indicates an amount of data expected to arrive. The method also includes the first WTRU triggering a second BSR, wherein the second BSR indicates an amount of data already available. The method further includes the first WTRU generating a MAC (Medium Access Control) PDU (Protocol Data Unit), wherein the MAC PDU includes at most one first BSR MAC CE (Control Element) for the first BSR and at most one second BSR MAC CE for the second BSR.

Abstract: A method and device are disclosed from the perspective of a User Equipment (UE) with a first USIM (Universal Subscriber Identity Module) and a second USIM. In one method, the method includes the UE performing paging monitoring in a first serving cell associated with the first USIM. The method also includes the UE performing paging monitoring in a second serving cell associated with the second USIM. The method further includes the UE transmitting, to a network node associated with the second USIM, information related to at least one of the paging monitoring performed in the first serving cell or the paging monitoring performed in the second serving cell.

Abstract: Methods, systems, and apparatuses can comprise a User Equipment (UE) receiving a system information including at least a first Non-terrestrial Network (NTN) configuration for a serving cell, starting or restarting a validity timer for the serving cell in response to receiving the system information, receiving a Radio Resource Control (RRC) reconfiguration message with ReconfigurationWithSync for a target cell, stopping, in response to receiving the RRC reconfiguration message, the validity timer that is running based on the first NTN configuration, and starting the validity timer based on a second NTN configuration for the target cell.

Abstract: Methods, systems, and apparatuses can comprise a User Equipment (UE) receiving a system information including at least a first Non-terrestrial Network (NTN) configuration for a serving cell, starting or restarting a validity timer for the serving cell in response to receiving the system information, receiving a Radio Resource Control (RRC) reconfiguration message with ReconfigurationWithSync for a target cell, stopping, in response to receiving the RRC reconfiguration message, the validity timer that is running based on the first NTN configuration, and starting the validity timer based on a second NTN configuration for the target cell.

Abstract: Methods, systems, and apparatuses are provided for a UE comprising receiving a cell list from a system information of a first cell, wherein the cell list comprises at least a second cell and a second Non-Terrestrial Network (NTN) configuration for the second cell, receiving a Radio Resource Control (RRC) reconfiguration message indicating a target cell, wherein the RRC reconfiguration message does not comprise any NTN configuration for the target cell, and applying the second NTN configuration for the target cell based on the target cell is the second cell.

Abstract: A method and apparatus are disclosed. In an example, a first node may trigger a scheduling request (SR) based upon an expected transmission from a second node which is a child node of the first node. The first node may determine a first SR configuration for the SR from a plurality of SR configurations configured to the first node.

Abstract: Methods, systems, and apparatuses are provided for a UE in a wireless communication system comprising receiving a first signaling to configure at least one value of a Discontinuous Reception (DRX) parameter, receiving, in a serving cell, a second signaling indicating a first value of the DRX parameter or a second value of the at least one value of the DRX parameter, and performing at least one of the following: adjusting the DRX parameter for a first DRX group or a second DRX group of the UE based on a target DRX group indicated in the second signaling or based on whether the serving cell is assigned to the first DRX group or the second DRX group, restarting a drx-onDurationTimer, in response to receiving the second signaling, at a timing calculated based on the first value or the second value of the DRX parameter indicated in the second signaling, stopping the drx-onDurationTimer in response to receiving the second signaling and starting the drx-onDurationTimer at the timing, or stopping the drx-onDurationTi

Abstract: Methods, systems, and apparatuses are provided for mobile terminated small data transmission in a wireless communication system. A User Equipment (UE) can apply Downlink (DL) Semi Persistent Scheduling (SPS) in a Mobile Terminated Small Data Transmission (MT-SDT) procedure. The UE can handle the configured DL assignment for DL SPS. A method for a UE in a wireless communication system can comprise receiving one or more configurations of DL SPS for Radio Resource Control Inactive (RRC_INACTIVE) state, initiating a MT-SDT procedure in response to receiving a paging indicating MT-SDT, receiving, in RRC_INACTIVE state, one or more DL transmissions using a configured DL assignment for the DL SPS during the MT-SDT procedure, and keeping the one or more configurations of the DL SPS and entering RRC_CONNECTED state in response to receiving a RRC resume message during the MT-SDT procedure.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE receives a first Radio Resource Control (RRC) message from a network node, wherein the first RRC message is indicative of a first uplink (UL) Bandwidth Part (BWP) of a cell. In response to initiation of a procedure to use a configured grant (CG) resource in RRC inactive state, the UE performs BWP switching from a second UL BWP of the cell to the first UL BWP of the cell. The UE performs, on the first UL BWP, a first UL transmission using the CG resource. In response to completion of the procedure, the UE performs BWP switching from the first UL BWP of the cell to the second UL BWP of the cell.

Abstract: Methods, systems, and apparatuses are provided for User Equipment (UE) location reporting in a wireless communication system to facilitate efficiency in measurement reporting in Non-Terrestrial Networks (NTNs). A method for a UE in a wireless communication system comprises receiving a first configuration to trigger measurement reporting based on a first event that distance between the UE and a first reference location of a serving cell becomes larger than a distance threshold and distance between the UE and a second reference location of a first neighbor cell becomes shorter than another distance threshold, and triggering a first measurement report based on the first event, wherein measured radio condition of the first neighbor cell is omitted or not included in the first measurement report.

Abstract: Methods, systems, and apparatuses are provided for User Equipment (UE) Timing Advance (TA) reporting in a wireless communication system. The UE can appropriately trigger the TA report with the different configurations by system information (e.g., for Random Access (RA) procedure, for TA report during RA, etc.) and dedicated signaling (e.g., for Radio Resource Control (RRC) connected mode, for event-triggered TA report, etc.). A method for a UE in a wireless communication system can comprise receiving a first configuration of TA report, receiving a second configuration of TA report, and determining whether to trigger a second TA report upon receiving the second configuration based on whether a first TA report has been transmitted to a serving cell.

Abstract: Methods and devices are disclosed from the perspective of a first wireless transmit/receive unit (WTRU). In one method, the method includes triggering a first buffer status report (BSR), wherein the first BSR indicates an estimated amount of data expected to arrive.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE receives, via a Radio Resource Control (RRC) message, a resource configuration of a first configured grant to be used in RRC inactive state. The UE performs a first new transmission using the first configured grant in RRC inactive state. After the performing the first new transmission, the UE receives an uplink grant in RRC inactive state via Physical Downlink Control Channel (PDCCH). The UE determines whether the uplink grant is for performance of a second new transmission or for performance of a first retransmission. The UE performs the second new transmission using the uplink grant in RRC inactive state if the UE determines that the uplink grant is for performance of the second new transmission.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE initiates a first Early Data Transmission (EDT) in RRC_INACTIVE state. Responsive to initiating the first EDT, the UE initiates a Random Access (RA) procedure in a cell configured with a normal uplink (NUL) carrier and a supplementary uplink (SUL) carrier. The UE selects the SUL carrier or the NUL carrier for performing the RA procedure based on at least one of whether there are one or more available Physical Random Access Channel (PRACH) resources for EDT on the SUL carrier or whether there are one or more available PRACH resources for EDT on the NUL carrier.

Abstract: A method and apparatus are disclosed from the perspective of a first network node. In one embodiment, the method includes the first network node transmitting a second transmission to a UE (User Equipment) in at least a first symbol of a first TTI (Transmission Time Interval). The method further includes the first network node transmitting a first transmission to a second network node in at least a second symbol of a second TTI, wherein the first TTI is TTI-level aligned to the second TTI and the first symbol is at least partially overlapped with the second symbol in time domain.

Abstract: Methods, systems, and apparatuses are provided for User Equipment (UE) location reporting in a wireless communication system to facilitate efficiency in measurement reporting in Non-Terrestrial Networks (NTNs). A method for a UE in a wireless communication system comprises receiving a first configuration to trigger measurement reporting based on a first event that distance between the UE and a first reference location of a serving cell becomes larger than a distance threshold and distance between the UE and a second reference location of a first neighbor cell becomes shorter than another distance threshold, and triggering a first measurement report based on the first event, wherein measured radio condition of the first neighbor cell is omitted or not included in the first measurement report.

Abstract: A method and device are disclosed from the perspective of a UE (User Equipment). In one embodiment, the method includes the UE receiving a first signaling to configure a preconfigured uplink resource (PUR) to be used in a cell. The method further includes the UE determining whether to use the PUR in the cell at least based on whether a timing advance is valid, wherein whether the timing advance is valid is based on a difference between a first measurement result and a second measurement result, and wherein the first measurement result is not a cell measurement quantity of the cell.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE initiates a first Early Data Transmission (EDT) in RRC_INACTIVE state. Responsive to initiating the first EDT, the UE initiates a Random Access (RA) procedure in a cell configured with a normal uplink (NUL) carrier and a supplementary uplink (SUL) carrier. The UE selects the SUL carrier or the NUL carrier for performing the RA procedure based on at least one of whether there are one or more available Physical Random Access Channel (PRACH) resources for EDT on the SUL carrier or whether there are one or more available PRACH resources for EDT on the NUL carrier.