Abstract: The method includes transmitting, by the terminal to a base station, the UECapabilityInformation includes a first capability information related to positioning gap activation and a second capability information related to positioning gap activation, transmitting, by the terminal to a LMF, receiving, by the terminal from a base station, the RRCReconfiguration, triggering a Scheduling Request for a first MAC CE if the first MAC CE has been triggered and not cancelled and if uplink shared channel resources are not available for a new transmission, performing, by the terminal, Scheduling Request transmission based on a specific first configuration and a specific second configuration, transmitting, by the terminal to the base station to request activation of a first gap, the first MAC CE and receiving, by the terminal from the base station, a second MAC CE, the second MAC CE includes a fourth field and a fifth field.

Abstract: A method and apparatus to support XR services is provided. Method for supporting XR services includes receiving a Radio Resource Control (RRC) message, triggering a first Medium Access Control (MAC) CE (Control Element) or a second MAC CE, and transmitting to the base station the first MAC CE or the second MAC CE. The first MAC CE is triggered based on existence of uplink data for a logical channel of a first set of logical channel group. The second MAC CE is triggered based on remaining time until discard of a one or more PDUs of a logical channel group of a second set of logical channel group.

Abstract: A method and apparatus for secondary base station change in a mobile communication system are provided. Method for secondary node change includes receiving conditional reconfiguration information from the base station, transmitting to the base station a first response message with an transaction identifier, performing evaluation based on the configuration generated by a second base station and transmitting a second response message with an identifier indicating which conditional reconfiguration is executed.

Abstract: A method and apparatus for operation in NTN is provided. Method for operation in NTN includes receiving system information including a first common offset1 in the first NR cell, transmitting the PUSCH of the first NR cell in the PUSCH transmission slot determined based on the first common offset1, receiving an RRC control message including a second common offset1 in the first NR cell and transmitting the PUSCH of the second NR cell in the PUSCH transmission slot determined based on the second common offset1.

Abstract: According to an embodiment of the present disclosure, a method for user equipment in a wireless communication system may comprise the steps of: user equipment receiving RRCReconfiguration from a base station; if MeasGapConfig includes first gap configuration information, the user equipment setting up a first gap, and if the MeasGapConfig includes second gap configuration information, the user equipment setting up a second gap; and the user equipment activating the first gap or the second gap.

Abstract: A Method and Apparatus for sidelink positioning is provided. The method includes receiving a SystemInformationBlock12 in a first cell, performing sidelink discovery with a type2 UE, receiving from a RRCReconfigurationSidelink, transmitting a first SL MAC CE, receiving a second SL MAC CE, starting to measure SL-PRS based on the NR-SL_PRS_ResourceSet ID field from the time point determined based on the Activation_Time field, transmitting a first SL MAC CE. The first MAC CE includes a A/D field and a NR-SL_PRS_ResourceSet ID field and a Activation_Time field. The A/D field is set to a first value. The second MAC CE includes a A/D field and a NR-SL_PRS_ResourceSet ID field and a Activation_Time field. The A/D field is set to a first value. The second MAC CE includes a A/D field and a NR-SL_PRS_ResourceSet ID field. The A/D field is set to a second value.

Abstract: A Method and Apparatus for discontinuous reception and discontinuous transmission are provided. The method includes receiving a radio resource control (RRC) reconfiguration message, receiving a specific downlink control information, activating cell discontinuous transmission (DTX) for a specific serving cell based on the specific downlink control information, performing physical downlink control channel (PDCCH) monitoring for the specific serving cell based on whether a cell-dtx-timer of the specific serving cell is running, triggering a Scheduling Request (SR) for beam failure recovery, transmitting the SR, performing PDCCH monitoring for the specific serving cell regardless of whether the cell-dtx-timer of the specific serving cell is running, transmitting a MAC CE comprising beam failure related information, and canceling the SR triggered for beam failure recovery.

Abstract: A method and apparatus for enhanced discontinuous reception is provided. Method for discontinuous reception includes receiving a downlink RRC message from the base station, determining a first subframe to start the first timer based on first counter and second counter and starting the first timer based on the determination. The second counter is set to a specific value if a specific DRX parameter is present.

Abstract: A method and apparatus for radio link monitoring on primary SCG cell are provided. The method includes transmitting by a terminal a first message to report UE capability, receiving a second message by the terminal to activate or deactivate a secondary cell group and performing by the terminal radio link monitoring on primary SCG cell.

Abstract: A method and apparatus for enhanced discontinuous transmission is provided. Method for discontinuous transmission includes determining a method for determining the first subframe of the first period, determining a first period based on the determined method, transmitting a first set of uplink signals during the first period, determining a second period based on a specific event occurred in a first period and transmitting a second set of uplink signals during the second period.

Abstract: A method and apparatus for monitoring paging in a mobile communication system are provided. Method for monitoring paging includes receiving a first message including first paging cycle and second paging cycle from the AMF, receiving a second message including third paging cycle and fourth paging cycle from the base station, receiving a system information including an information related to the support of extended DRX, determining a reference DRX cycle, monitoring paging occasion based on the reference DRX cycle and receiving a paging.

Abstract: A method and apparatus for supporting XR services is provided. The method of a terminal includes receiving from a base station a Radio Resource Control (RRC) message, wherein the RRC message comprises a set of Packet Data Convergence Protocol (PDCP) parameters for a Data Radio Bearer (DRB), establishing a Data Radio Bearer (DRB) based on the set of PDCP parameters, starting a discard timer for a Service Data Unit (SDU) of the DRB and discarding one or more SDUs. In case that the discard timer expires, the terminal performs a first discard operation. In case that successful delivery of the SDU is confirmed by the PDCP status report, the terminal performs a second discard operation.

Abstract: A Method and Apparatus for discontinuous reception and discontinuous transmission are provided. The method includes transmitting a UECapabilityInformation to the GNB, receiving a RRCReconfiguration form the GNB, performing DRX operation based on the RRCReconfiguration and current-drx2-ConfigId, receiving a first MAC CE from the GNB and performing DRX operation based on the first MAC CE. The performing DRX operation comprises receiving or not receiving configured assignment based downlink transport block.

Abstract: A method and apparatus to support conditional reconfiguration is provided. Method for supporting conditional reconfiguration includes receiving from a base station a RRC reconfiguration message, receive from the base station physical layer control information related to conditional reconfiguration and applying a RRC reconfiguration message associated with a specific applicable cell based on whether the specific applicable cell is configured with a first parameter, whether the physical layer control information related to conditional reconfiguration is received, reference signal received power of the specific applicable cell and a specific bit of the physical layer control information.

Abstract: A method and apparatus for supporting XR services is provided. The method of a terminal includes receiving from a base station a Radio Resource Control (RRC) message, wherein the RRC message comprises a set of Packet Data Convergence Protocol (PDCP) parameters, establishing a PDCP entity based on the set of PDCP parameters, receiving from the base station a PDCP discard report and updating a first state variable based on the PDCP discard report. The first state variable relates to start of a reordering timer. One or more PDCP Service Data Units (SDUs) are delivered from the PDCP entity to an upper layer in case that the reordering timer expires.

Abstract: A method and apparatus for enhanced discontinuous transmission is provided. Method for discontinuous transmission includes performing uplink transmission for configured grants during a first transmission period and a second transmission period, performing uplink transmission for a first configured grants during a first transmission period and, performing uplink transmission for a second configured grants during a second transmission period based on presence of a first information. The first configured grants are configured grants that are activated in the currently activated uplink BWP. The second configured grants are configured grants that activated and configured to be transmitted during the second transmission period in the currently activated uplink BWP.

Abstract: A method and apparatus for data transfer in RRC_INACTIVE state is provided. Method for data transfer in RRC_INACTIVE state includes receiving RRC Reconfiguration message, receiving RRC Release message and triggering BSR based on the first BSR configuration and first LCGs or based on the second BSR configuration and second LCGs.

Abstract: A method may comprise receiving, from a base station, at least one Radio Resource Control (RRC) message. The at least one RRC message may comprise: first configuration information associated with at least one first cell; and second configuration information associated with at least one second cell. The method may comprise while the first configuration information and the second configuration information are configured for the wireless device: performing, based on the second configuration information, wireless communication via at least one cell of the at least one second cell; receiving a first Medium Access Control (MAC) Control Element (CE), wherein the first MAC CE comprises an identifier associated with the first configuration information; and based on the first MAC CE, performing, using at least one parameter of the first configuration information, wireless communication via at least one cell of the at least one first cell.

Abstract: A Method and Apparatus for sidelink positioning is provided. The method includes receiving a SystemInformationBlock12 in a first cell, initiating sidelink positioning in the first cell if the SystemInformationBlock12 includes a sl-PositioningAllowed field set to a first value, and performing sidelink positioning based on a sidelink positioning resource pool or based on a specific sidelink resource pool. Configuration information of the specific sidelink resource pool includes sl_Pos_Allowed field set to a first value. The SystemInformationBlock12 includes a SL-ConfigCommonNR and a SL_Pos_ConfigCommon. The SL_Pos_ConfigCommon includes a one or more Sl_Pos_ResourcePool IEs.

Abstract: A method and apparatus for layer 2 mobility is provided. Method for lower layer mobility includes transmitting the UECapabilityInformation to the base station, receiving a RRCReconfigruation from the base station, receiving a PDCCH order from the base station, transmitting a preamble to the base station based on the PDCCH order, receiving a response from the base station and determining Timing advance between downlink and uplink (TTA). If the type1 PDCCH order was received, the terminal determining TTA of a first cell based on the first field (TAC) and the subcarrier spacing for a first PUSCH transmission. The first cell is the cell where the first PDCCH order was received. If the type2 PDCCH order was received, the terminal determining TTA of a second cell based on the first field and the subcarrier spacing for the preamble transmission and the second field (CMG identifier).