Abstract: The present disclosure relates to a method of performing data transmissions in a Radio Resource Control (RRC) INACTIVE state by a user equipment (UE) in a wireless communication system. Especially, the method includes the steps of generating at least one Small Data Transmission (SDT) data unit that can be transmitted in RRC INACTIVE state; triggering a SDT procedure for transmitting the at least one SDT data unit in RRC INACTIVE state; generating a non-SDT data unit that cannot be transmitted in RRC_INACTIVE during the SDT procedure; generating an indication message informing that there is the non-SDT data unit, based on an uplink grant related to the SDT procedure for transmitting the indication message being available; and transmitting the indication message via a Dedicated Control Channel (DCCH) during the SDT procedure to a network.

Abstract: A method and apparatus for handling failures in transmission using PUR in a wireless communication system is provided. A wireless device receives, from a network, preconfigured uplink resource (PUR) configuration. A wireless device detects that each resource of the PUR is not successfully used for uplink (UL) transmission. A wireless device informs the failure cause and/or the expected behavior based on the PUR configuration. A wireless device receives, from a network, reconfiguration of the PUR.

Abstract: A method and device for a wireless communication system according to one embodiment of the present invention receive a radio resource control (RRC) connection release message and release an RRC connection on the basis of the RRC connection release message, wherein the RRC connection release message includes information about a target Internet of Things (IoT) mode, and the communication device can be switched from a source IoT mode to the target IoT mode on the basis of the information about the target IoT mode.

Abstract: The present disclosure relates to a signalling of associated network identifiers (IDs) in wireless communications. According to an embodiment of the present disclosure, the UE may be configured with a list of stand-alone non-public networks (SNPN) identifiers, a list of group identifiers of network and a list of bitmaps, which have a relationship such that: i) n-th entry in the list of bitmaps corresponds to n-th SNPN in the list of SNPN identifiers; ii) k-th bit from left side in each bitmap corresponds to k-th group identifier among group identifiers related to the list of group identifiers; and iii) a bit set to positive indication in a bitmap informs that a corresponding group identifier is supported by a SNPN corresponding to the bitmap.

Abstract: A method and apparatus for deactivation of a configured grant based on a number of retransmissions for a wireless device in an idle state and/or an inactive state is provided. The wireless device releases a configured grant for a data unit based on one or more of unsuccessful retransmissions of the data unit.

Abstract: A method and apparatus for master cell group (MCG) radio link failure (RLF) reporting during secondary cell group (SCG) suspension in a wireless communication system is provided. A wireless device detects a failure on a master cell group (MCG) while a secondary cell group (SCG) is suspended, and transmits MCG failure information informing the failure on the MCG by using a physical uplink control channel (PUCCH) format via the SCG, based on unavailability of physical uplink shared channel (PUSCH) transmission via the SCG.

Abstract: A method and apparatus for measurement in idle state or inactive state considering a network slice in a wireless communication system is provided. A wireless device configures multiple network slices. A wireless device receives network slice information related to the multiple network slices. A wireless device establishes a Packet Data Unit (PDU) session for a specific service. A wireless device determines one or more frequencies that support the at least one network slice used by the PDU session among the multiple network slices, based on the frequency information. A wireless device reports measurement results on the determined one or more frequencies.

Abstract: A method and apparatus for configured grants based on channel quality and/or repetition level in a wireless communication system is provided. A wireless device receives a configured grant which is mapped to a channel quality, determines the channel quality of the wireless device, and performs data transmission based on the configured grant.

Abstract: A method and apparatus for a cell selection or a cell reselection considering a network slice in a wireless communication system is described. A wireless device configures multiple network slices. A wireless device receives a network slice information related to the multiple network slices. A wireless device establishes a PDU session for a specific service. A wireless device determines one or more frequencies that support the at least one network slice, used by the PDU session, from among the multiple network slices based on the frequency information. A wireless device performs a cell selection procedure and/or a cell reselection procedure based on the determined one or more frequencies.

Abstract: A method and apparatus for determining whether to perform transmission on a random access or a configured grant in wireless communication system is provided. The wireless device leaves a connected state with a network. The wireless device determines whether to perform transmission on a random access (RA) or a configured grant based on data available for transmission, wherein the configured grant is received from the network. The wireless device performs the transmission of the data based on the determination.

Abstract: A method and apparatus for resuming only signaling radio bearers (SRBs) in a wireless communication system is provided. A wireless device triggers a signaling while the wireless device is in a radio resource control (RRC) inactive state, and resumes only SRB and transmits a message 3 (MSG3) of a random access procedure to a network when an early data transmission (EDT) triggering condition for transmission via the MSG3 is fulfilled. The MSG3 includes the signaling.

Abstract: Provided are a method for responding to a paging. According to an embodiment of the present disclosure, the method includes receiving a configuration of a pre-allocated resource, receiving, in a paging occasion, information on type of resource for a response message, transmitting the response message on the pre-allocated resource, based on that the information informs the pre-allocated resource.

Abstract: A method and apparatus for relaxed measurement based on data transmission in idle mode and/or inactive mode in a wireless communication system. The wireless device identifies a transmission failure, and performs either a normal measurement or a relaxed measurement based on the transmission failure.

Abstract: Provided are a method for a user equipment (UE) to perform access barring check in a wireless communication system, and an apparatus supporting the same. The method may include: receiving a list of barring information, wherein each of the barring information includes a barring factor and a barring time; receiving information on an access category related to barring information included in the list; performing the access barring check for the access category, based on the barring information related to the access category; and performing uplink transmission, if an access attempt is allowed for the access category.

Abstract: A method and apparatus for slice-aware cell reselection in a wireless communication system is provided. A wireless device acquires network slice information. A wireless device performs slice-aware cell reselection based on both the network slice information and cell quality. Based on determining that a quality of a current cell is lower than or equal to a threshold value, a wireless device performs cell reselection based on only the cell quality.

Abstract: A method and apparatus for determining whether to perform transmission on a random access or a configured grant in wireless communication system is provided. The wireless device leaves a connected state with a network. The wireless device determines whether to perform transmission on a random access (RA) or a configured grant based on data available for transmission, wherein the configured grant is received from the network. The wireless device performs the transmission of the data based on the determination.

Abstract: Provided are a method for a user equipment (UE) to perform access to a cell in a wireless communication, and an apparatus supporting the same. The method may include: receiving, from a first system, access control information for the first system; camping on the cell of a second system; mapping the access control information for the first system to access control information for the second system; and performing access to the cell of the second system, based on the mapped access control information for the second system.

Abstract: A method and apparatus for access control for data transmission in idle mode and/or inactive mode in a wireless communication system is provided. An allowed timer is defined, and the allowed timer is started based on a result of access barring check. While the allowed timer is running, the wireless device can perform an uplink (UL) transmission without further access barring check.

Abstract: The present disclosure relates to a signalling of associated network identifiers (IDs) in wireless communications. According to an embodiment of the present disclosure, the UE may be configured with a list of stand-alone non-public networks (SNPN) identifiers, a list of group identifiers of network and a list of bitmaps, which have a relationship such that: i) n-th entry in the list of bitmaps corresponds to n-th SNPN in the list of SNPN identifiers; ii) k-th bit from left side in each bitmap corresponds to k-th group identifier among group identifiers related to the list of group identifiers; and iii) a bit set to positive indication in a bitmap informs that a corresponding group identifier is supported by a SNPN corresponding to the bitmap.

Abstract: The present disclosure relates to method and apparatus for controlling a transmission of a response signal in a wireless communication system. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system, comprises receiving a signal for a paging from a network; and receiving downlink (DL) data related to the paging, wherein a transmission of at least one of a paging response for the paging or acknowledgment (ACK) information for the DL data is determined based on information included in the signal for the paging.