Abstract: A user equipment (UE) and a method for sidelink failure management are provided. The method includes receiving, from a source cell, a first message including a sidelink Radio Resource Control (RRC) configuration associated with a target cell; determining that a sidelink failure event associated with an associated sidelink destination UE occurs; and transmitting a sidelink failure report indicating the sidelink failure event to the target cell after performing a handover procedure to switch from the source cell to the target cell.

Abstract: A method and a User Equipment (UE) for cell (re)selection are provided. The method includes: receiving an intra-frequency-reselection indicator in a Master Information Block (MIB) from a cell on a specific frequency; determining whether the cell belongs to a network to which the UE is registered; determining other cells on the specific frequency as barred cells that the UE is not permitted to select in an intra-frequency cell reselection, in a case that the cell belongs to the network and the intra-frequency-reselection indicator is set to a first value indicating that the intra-frequency cell reselection is not allowed to be performed; and performing the intra-frequency cell reselection to the other cells on the specific frequency, in a case that the cell does not belong to the network or the intra-frequency-reselection indicator is set to a second value indicating that the intra-frequency cell reselection is allowed to be performed.

Abstract: A method for a UE to perform a MUSIM operation is provided. The method includes connecting to a first network associated with a first USIM; transmitting a request message to the first network, the request message including assistance information to request a time gap for the MUSIM operation; receiving a first time gap configuration from the first network in a case that a type of the time gap requested by the UE is aperiodic, the first time gap configuration indicating a starting SFN and a starting subframe of a first configured time gap; and in a case that the UE receives the first time gap configuration, switching to a second network, while keeping a connection to the first network, during the first configured time gap according to the first time gap configuration, the second network being associated with a second USIM.

Abstract: A method for a user equipment (UE) of determining a tracking reference signal (TRS) resource set availability is provided. The method includes receiving, from a base station (BS), a TRS configuration that indicates one or more TRS resource sets for the UE to monitor reference signals; determining whether a Layer 1 (L1)-based availability indication for the one or more TRS resource sets is received from the BS; and determining the one or more TRS resource sets are unavailable when the UE determines that the L1-based availability indication has not been received from the BS.

Abstract: A user equipment and a method for performing a multi-Subscriber Identity Module (multi-SIM) operation are provided. The method includes connecting to a first network associated with a first Universal Subscriber Identity Module (USIM) of the UE; receiving, from the first network, a first configuration indicating that the UE is allowed to transmit an assistance information message for switching to a second network associated with a second USIM of the UE, the first configuration further including a configuration of a timer; transmitting, to the first network, the assistance information message, the assistance information message including information of a preferred Radio Resource Control (RRC) state associated with the first network to indicate that the UE prefers to switch from an RRC_CONNECTED state associated with the first network to the preferred RRC state; and starting the timer upon transmitting the assistance information message.

Abstract: A method for a conditional Primary Secondary Cell Group (SCG) Cell (PSCell) change (CPC) procedure performed by a user equipment (UE) is provided. The method includes: receiving, from a master node, a conditional reconfiguration for changing from a source PSCell to a target PSCell in an SCG portion of a radio resource control (RRC) reconfiguration message, the conditional reconfiguration including a configuration of the target PSCell and an execution condition; evaluating the execution condition; applying the configuration of the target PSCell and synchronizing to the target PSCell after determining that the execution condition is satisfied; and transmitting, to the master node, a response message after determining that the conditional reconfiguration is applied.

Abstract: A method and a user equipment (UE) for performing a Configured Grant-based Small Data Transmission (CG-SDT) is provided. The method includes performing an initial transmission of the CG-SDT via a first configured Uplink (UL) grant associated with a Hybrid Automatic Repeat Request (HARQ) process; determining whether a feedback from the BS has been received for the first configured UL grant associated with the HARQ process; and performing a retransmission for the initial transmission of the CG-SDT via a second configured UL grant if the feedback has not been received.

Abstract: A method for multicast service data reception is provided. The method determines whether a first PDCCH addressed to a first RNTI is received on a first BWP. Whena BWP inactivity timer is configured, a default BWP is configured, and the first BWP is not the default BWP, the method (re)starts the BWP inactivity timer after determining that the first PDCCH is received on the first BWP, and switches to the default BWP when the BWP inactivity timer expires. When the BWP inactivity timer is configured, the default BWP is not configured, and the first BWP is not an initial BWP, the method (re)starts the BWP inactivity timer after determining that the first PDCCH is received on the first BWP, and switches to the initial BWP when the BWP inactivity timer expires.

Abstract: A user equipment (UE) and a method for cell reselection are provided. The method includes receiving a Radio Resource Control (RRC) Release message from a serving cell, the RRC Release message including slice information of neighboring cells of the serving cell; receiving, by an RRC layer of the UE, information of an intended slice from a Non-Access Stratum (NAS) layer of the UE; and performing a cell reselection procedure based on the slice information of the neighboring cells and the information of the intended slice.

Abstract: A method and a user equipment (UE) for timing alignment is provided. The method includes maintaining a Timing Advance (TA) value as a first TA value; receiving, from a Base Station (BS), a TA command during a Random Access (RA) procedure; applying the TA command to set the TA value to a second TA value included in the TA command in a case that a first timing alignment timer is not running; determining whether a contention resolution for the RA procedure is successful; and when the contention resolution is not successful, setting the TA value to the first TA value in a case that a Configured Grant-based Small Data Transmission (CG-SDT) procedure is ongoing.

Abstract: A method for a UE for performing slice-based cell reselection is provided. The method includes receiving slice priority information including at least one slice and at least one priority value associated with the at least one slice; receiving frequency priority information including one or more slices, at least one frequency supporting the one or more slices, and one or more priority values associated with the one or more slices; selecting a first slice based on the slice priority information; determining whether a cell on the at least one frequency in the frequency priority information supports the first slice; reselecting a second slice when the UE determines that the cell does not support the first slice; and based on the second slice, the slice priority information, and the frequency priority information, determining at least one reselection priority for the at least one frequency in the frequency priority information.

Abstract: A method of a small data transmission for a user equipment (UE) is provided. The method includes receiving, from a base station (BS), a radio resource control (RRC) release message, the RRC release message including a configured grant configuration and a first timer associated with the configured grant configuration, the configured grant configuration indicating an uplink (UL) resource; transitioning to an RRC_INACTIVE state in response to receiving the RRC release message; starting the first timer in response to receiving the RRC release message; determining whether the UL resource is valid, the UL resource being invalid at least when the first timer expires; and transmitting UL data on the UL resource after the UE determines that the UL resource is valid.

Abstract: A method performed by a user equipment (UE) includes initiating a Small Data Transmission (SDT) procedure for transmitting a first set of data packets to a base station (BS) via an uplink (UL) transmission, determining, while the UE is in a Radio Resource Control (RRC) Inactive state, whether to prioritize the UL transmission over a sidelink (SL) transmission when there is a conflict between the UL transmission and the SL transmission during the SDT procedure, where the SL transmission is for transmitting a second set of data packets to another UE.

Abstract: A method, performed by a User Equipment (UE) for a small data transmission, includes receiving, from a base station (BS), a configuration indicating a dedicated physical resource; transmitting the small data transmission based on the dedicated physical resource; and receiving an acknowledge (ACK) indicator indicating a successful reception from the BS, wherein the UE is in an inactive state to transmit the small data transmission.

Abstract: A method for a UE for performing a CG-SDT is provided. The method includes receiving a CG-SDT-specific RSRP threshold from a BS, the CG-SDT-specific RSRP threshold being configured to the UE for an SSB selection for the CG-SDT; in a case that one or more SSBs with RSRPs above the CG-SDT-specific RSRP threshold are available, performing the SSB selection to determine a first SSB index from one or more SSB indices of the one or more SSBs; and performing an initial transmission of the CG-SDT or a subsequent new transmission of the CG-SDT through a first UL grant corresponding to the first SSB index.

Abstract: A method for a UE for performing SDT is provided. The method includes receiving, from a BS, system information that includes a SIB1; determining whether to initiate an SDT procedure based on one or more conditions, the one or more conditions including the SIB1 including an SDT configuration; and initiating the SDT procedure in a case that the one or more conditions are fulfilled. A UE using the method is also provided.

Abstract: A method for a user equipment (UE) to monitor paging messages is provided. The method monitors, while the UE is in an Idle mode, a physical paging channel (PPCH) for receiving paging messages associated with the UE from a serving radio access network (RAN). The method receives one or more paging messages associated with the UE while monitoring the PPCH. The method then determines, whether the one or more paging messages are received during a small data transmission (SDT) procedure. The method further determines whether to terminate the SDT procedure or not after determining that the one or more paging messages are received during the SDT procedure.

Abstract: A method of sidelink (SL) radio link failure (RLF) control for a first user equipment (UE) and a second UE is disclosed. The method comprises obtaining at least one SL RLF configuration, wherein the SL RLF configuration is associated with at least one SL radio bearer within at least one PC5 RRC connection and includes at least one SL RLF control parameter indicating at least one transmission range for SL communication, selecting, by the first UE, at least one SL RLF control parameter of the SL RLF configuration associated with the PC5 RRC connection, according to a communication distance between the first UE and the second UE and the at least one transmission range indicated by the at least one SL RLF control parameter, and determining, by the first UE, an SL RLF event occurs on the PC5 RRC connection based on the selected SL RLF control parameter.

Abstract: A user equipment (UE) includes one or more non-transitory computer-readable media having computer-executable instructions embodied thereon, at least one processor coupled to the one or more non-transitory computer-readable media, and configured to execute the computer-executable instructions to: determine, before selecting a cell, whether the cell is non-campable for the UE based on barred cell (cellBarred) status information received through system information from the cell, the cell connected to a first core network and not connected to a second core network; and perform cell selection of another cell after it is determined that the cell is non-campable for the UE based on the cellBarred status information; wherein the cellBarred status information comprises information regarding the first core network and information regarding a plurality of Public Land Mobile Networks (PLMNs) operating the first core network.

Abstract: A user equipment (UE) and a method performed by the UE are provided. The method includes transitioning from a radio resource control (RRC) inactive (RRC_INACTIVE) state to an RRC idle (RRC_IDLE) state upon determining that the UE has failed to find a suitable cell and camped on an acceptable cell; and discarding a radio access network (RAN) notification area (RNA) configuration that comprises at least one of a list of tracking area identities (IDs) or a list of RAN area IDs in response to the transitioning from the RRC_INACTIVE state to the RRC_IDLE state. The acceptable cell fulfills a minimum set of requirements to initiate an emergency call and to receive one or more Earthquake & Tsunami Warning System (ETWS) and Commercial Mobile Alert System (CMAS) notifications. The suitable cell provides normal services. The acceptable cell provides limited services.