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: The present specification provides a method for receiving gap symbol information, the method being performed by a node in a wireless communication system. The method is characterized by including: receiving the gap symbol information, wherein the gap symbol information indicates the number of gap symbols pertaining to switching between a mobile terminal (MT) operation and a distributed unit (DU) operation; and performing an integrated access and backhaul (IAB) operation on the basis of the gap symbol information, wherein the node does not perform the IAB operation on the symbol indicated by the gap symbol information.

Abstract: The present disclosure relates to method and apparatus for backhaul status reporting in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving a detecting configuration and a report configuration, the report configuration comprising a reporting destination informing at least one wireless device among a plurality of wireless devices connected to the wireless device via a first backhaul for the wireless device; detecting a status of a second backhaul for the wireless device based on the detecting configuration; and transmitting the status of the second backhaul based on the report configuration, to the at least one wireless device informed by the reporting destination.

Abstract: The present invention relates to a method of transmitting a buffer status report (BSR) by a wireless node in a wireless communication system. In particular, the method includes the steps of: receiving first logical channel group (LCG) configuration information including identities of LCGs from a network; generating the BSR including a LCG field; and transmitting the BSR to the network, wherein a length of the LCG field is configured according to a highest value of the identities of LCGs.

Abstract: The present invention relates to a method of transmitting uplink (UL) data by a user equipment (UE) in a wireless communication system. In particular, the method includes the steps of: based on the UE transmitting the UL data on a first UL resource of a configured grant (CG) con-figuration based on a Hybrid-ARQ (HARQ) process, starting a CG retransmission timer for the HARQ process and a CG timer for the HARQ process; based on a second UL resource of the CG configuration not being configured between an expiration time point of the CG retransmission timer and an expected expiration time point of the CG timer, stopping the CG timer upon expiration of the CG retransmission timer; and performing retransmission of the UL data based on the HARQ process after the expected expiration time point of the CG timer.

Abstract: The present invention relates to a method of transmitting a buffer size report (BSR) by a wireless node in a wireless communication system. In particular, the method includes the steps of: generating the BSR including a first bitmap; and transmitting the BSR to a network, wherein each bit of the first bitmap indicates whether a corresponding second bitmap is present or not in the BSR, wherein each bit of at least one second bitmap which is present in the BSR indicates whether buffer size information of a corresponding logical channel group (LCG) is present or not in the BSR.

Abstract: The present invention relates to a method of transmitting a buffer status report (BSR) by a wireless node in a wireless communication system. In particular, the method includes the steps of: receiving first logical channel group (LCG) configuration information including identities of LCGs from a network; generating the BSR including a LCG field; and transmitting the BSR to the network, wherein a length of the LCG field is configured according to a highest value of the identities of LCGs.

Abstract: The present disclosure relates to a method of performing transmission by a node in a wireless communication system. In particular, the method includes the steps of: configuring two or more route entries, wherein each of the two or more route entries comprises corresponding route information; receiving a packet including routing information; selecting, from the two or more route entries, a route entry based on the routing information or a part of the routing information included in the packet, wherein at least one route entry of the two or more route entries is not allowed to be selected based on the part of the routing information; and transmitting the packet to a next node related to the selected route entry.

Abstract: The present invention relates to a method of transmitting a buffer status report (BSR) by an Integrated Access and Backhaul (IAB) node in a wireless communication system. In particular, the method includes the steps of: generating the BSR; and transmitting the BSR to the network, wherein the BSR includes data volume of the IAB node determined by considering data volume of at least one RLC (Radio Link Control) layer entity of the IAB node and data volume of an adaptation layer of the IAB node.

Abstract: The present disclosure relates to a method of transmitting a packet by an Integrated Access and Backhaul (IAB) node in a wireless communication system. In particular, the method includes the steps of: receiving, from a first node, an indication indicating that a congestion problem occurs between the first node and a second node; if the packet is to be transmitted to other node via the first node, transmitting the packet to the first node; and if the packet is to be transmitted to the second node via the first node, transmitting the packet to a third node.

Abstract: The present disclosure relates to a method of processing signals by a user equipment (UE) in a wireless communication system. Especially, the method includes the steps of receiving a data signal including a data unit for a multicast/broadcast service (MBS) based on a control signal addressed with a Group-Radio Network Temporary Identifier (G-RNTI) from a network; identifying a logical channel for the MBS among two or more logical channels, based on the G-RNTI and a logical channel identifier; and transferring the data unit for the MBS to the identified logical channel.

Abstract: An Integrated Access and Backhaul (IAB) node configured with a first Backhaul Adaptation Protocol (BAP) address related to a first donor IAB node and a second BAP address related to a second donor IAB node in a wireless communication system. Techniques include receiving a packet including a destination BAP address and a path identifier (ID). Based on the packet being received through the second link and the destination BAP address not matching the second BAP address, determining whether the destination BAP address and the path ID of the packet match at least one entry of a configured rewriting table. Based on the destination BAP address and the path ID of the packet matching the at least one entry, rewriting a header of the packet by setting the destination BAP address and the path ID according to the at least one entry, and transmitting the packet to a next hop node.

Abstract: A communication device, processing device or method constructs M RLC PDUs including M RLC SDUs, respectively, where M is larger than 1; submits, for a transmission opportunity, only L RLC PDUs for L RLC SDUs with lowest L SNs among the M RLC PDUs to a MAC layer, where L<M and the L RLC PDUs include a first RLC PDU having a poll to trigger status reporting at a receiving device; transmits the L RLC PDUs to the receiving device; constructs a second RLC PDU including a second RLC SDU having a highest SN among SNs of RLC SDUs submitted to the MAC layer, when the poll retransmission timer started upon submitting the first RLC PDU having the poll expires and no new RLC SDU or RLC SDU segment can be transmitted.

Abstract: The present disclosure relates to a routing path switching in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving a configuration for a first routing identity (ID) and a second routing ID, wherein the first routing ID is related to a first routing path towards a destination node, and the second routing ID is related to a second routing path towards the destination node; transmitting, to the destination node, a first protocol data unit (PDU) via the first routing path related to the first routing ID; and based on that a condition to switch a routing path is satisfied: constructing a second PDU so that a header of the second PDU includes information for a routing path switch to the second routing path; and transmitting, to the destination node, the second PDU including the header via the second routing path related to the second routing ID.

Abstract: An Integrated Access and Backhaul (IAB) node configured with a first Backhaul Adaptation Protocol (BAP) address related to a first donor IAB node and a second BAP address related to a second donor IAB node in a wireless communication system. Techniques include receiving a packet including a destination BAP address and a path identifier (ID). Based on the packet being received through the second link and the destination BAP address not matching the second BAP address, determining whether the destination BAP address and the path ID of the packet match at least one entry of a configured rewriting table. Based on the destination BAP address and the path ID of the packet matching the at least one entry, rewriting a header of the packet by setting the destination BAP address and the path ID according to the at least one entry, and transmitting the packet to a next hop node.

Abstract: The present invention constructs L RLC PDUs, where L is larger than 1; and submit the L RLC PDUs to a medium access control (MAC) layer for a transmission opportunity. The L RLC PDUs include a first RLC PDU having a poll to trigger status reporting at a receiving device and a second RLC PDU not having the poll and having a highest sequence number (SN) among SNs of the L RLC PDUs. The present invention sets a state variable to a highest SN among SNs of RLC PDUs having the poll submitted to the MAC layer, upon submitting the first RLC PDU to the MAC layer.

Abstract: A communication device, processing device or method constructs M RLC PDUs including M RLC SDUs, respectively, where M is larger than 1; submits, for a transmission opportunity, only L RLC PDUs for L RLC SDUs with lowest L SNs among the M RLC PDUs to a MAC layer, where L<M and the L RLC PDUs include a first RLC PDU having a poll to trigger status reporting at a receiving device; transmits the L RLC PDUs to the receiving device; constructs a second RLC PDU including a second RLC SDU having a highest SN among SNs of RLC SDUs submitted to the MAC layer, when the poll retransmission timer started upon submitting the first RLC PDU having the poll expires and no new RLC SDU or RLC SDU segment can be transmitted.

Abstract: The present disclosure relates to a packet duplication in wireless communications.

Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for handling for Bandwidth Part operation in wireless communication system, the method comprising: starting a timer related to a downlink (DL) bandwidth part (BWP), when an active BWP for a serving cell is switched to the DL BWP; wherein DL semi-persistent scheduling (SPS) resources are configured on the DL BWP and uplink (UL) SPS resources are configured on a UL BWP related with the DL BWP; transmitting UL data on one of the UL SPS resources or receiving DL data on one of the DL SPS resources; and restarting the timer related to the DL BWP when the UL data is transmitted on the UL SPS resource or the DL data is received in the DL SPS resource.

Abstract: The present specification provides a method for transmitting guard symbol information, which is performed by a node in a wireless communication system, the method comprising: determining the guard symbol information, the guard symbol information indicating the number of guard symbols, desired by the node, associated with switching between a mobile terminal (MT) operation and a distributed unit (DU) operation; and transmitting the guard symbol information to a parent node, the guard symbol being a symbol not used on the basis of a transition between the MT operation and the DU operation.