Abstract: A method for transmitting a quality of service (QoS) state report by a wireless node in a wireless communication system is disclosed. The method comprises receiving an indication related to service availability from an upper layer, upon a state of the service availability is changed; and transmitting the QoS state report including the indication related to service availability to a network.

Abstract: In the present invention, a radio link control (RLC) entity of the receiving device receives an RLC service data unit (SDU) segment of a first RLC SDU. The RLC entity starts a first reassembly timer for the first RLC SDU if the RLC SDU segment of the first RLC SDU is the first one received for the first RLC SDU at the RLC entity. The receiving device uses a reassembly timer per RLC SDU segmented.

Abstract: The present invention relates to a method for processing signals by a node in a wireless communication system. In particular, the method includes receiving a radio bearer (RB) configuration message from a network; and configuring a radio bearer between a radio link control (RLC) entity of the node and a peer RLC entity using the RB configuration message, wherein the RB configuration message includes information about that the peer RLC entity operates with a different RLC mode from a RLC entity of the node.

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 invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for transmitting uplink data which is robust to collision on shared uplink resource in wireless communication system, the method comprising: checking whether uplink data is allowed to transmit on contention based resource or not, when the uplink data becomes available for transmission; and transmitting a buffer status reporting (BSR) on the contention based resource without any uplink data, if the uplink data is not allowed to transmit on the contention based resource.

Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for receiving DL data on SPS resources in wireless communication system, the method comprising: receiving downlink (DL) Semi-Persistent Scheduling (SPS) configuration information; receiving a paging message including an identifier related to the UE; and configuring DL SPS resources based on the received DL SPS configuration information if the paging message includes information for activating of DL SPS configuration, wherein the UE tries to receive DL data on each of the configured DL SPS resource.

Abstract: The present invention relates to a method for receiving packets by a decompressor in a wireless communication system. In particular, the method includes receiving a full header packet from a compressor, wherein the full header packet includes a context identifier (CID) and a header context; establishing the header context; transmitting a feedback packet including the CID; starting a timer related to the CID; and based on not receiving a compressed header packet related to the CID until expiration of the timer, retransmitting the feedback packet including the CID to the compressor.

Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for handling pre-configured UL resources based on LBT procedure in wireless communication system, the method comprising: receiving information for UL resource configuration from a network, in a state that the UE is configured with at least one serving cell operating in an unlicensed spectrum; performing LBT operation for transmission of uplink data by using the UL resource, wherein the UE starts counting a number of failures of the LBT operation once the UE is not allowed to use the UL resource for transmission of uplink data during the LBT operation, and when the number of failures of the LBT operation reaches to the maximum number of LBT failure, stopping using the UL resource.

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: A method and apparatus for discarding data among associated transmission buffers in a wireless communication system is provided. A wireless device generates a first data packet and a second data packet, and performs a random access (RA) procedure based on the first data packet. When the RA procedure based on the first data packet fails, the wireless device discards the first data packet, and continues the RA procedure based on the second data packet. A media access control (MAC) layer indicates a radio resource control (RRC) layer that the RA procedure based on the second data packet is performed.

Abstract: Provided are a method for transmitting a message by a user equipment (UE) in a wireless communication, and an apparatus supporting the same. The method may include: initiating early data transmission; receiving a random access response message including an uplink grant, from a base station (BS); based on the uplink grant, determining whether or not to transmit a first message related to the early data transmission to the BS, in response to the random access response message; and after determining to transmit the first message related to the early data transmission, resuming radio bearers for the early data transmission.

Abstract: A method for transmitting signals by a medium access control (MAC) entity of a transmission end in a wireless communication system is disclosed. The method includes steps of receiving a protocol data unit (PDU) from a Radio Link Control (RLC) layer; transmitting a signal including the PDU based on a specific coverage enhanced (CE) level to a network; when a transmission of the signal to a network is failed, determining whether a current CE level is changed or not from the specific CE level; if the current CE level is changed from the specific CE level, transmitting an indication requesting a retransmission of the PDU, to the RLC layer; receiving the PDU from the RLC layer; and transmitting a signal including the PDU based on the current CE level to the network.

Abstract: The present invention relates to a method for transmitting a signal by a user equipment in a wireless communication system. In particular, the method includes the steps of: receiving a discard indication for a data unit from an upper layer; discarding the data unit in a buffer; if the buffer becomes empty upon discarding the data unit, selecting a specific data unit among data units received from the upper layer before a reception of the discard indication; including a status report request indicator into the specific data unit; and transmitting the specific data unit to a network.

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: A method for transmitting a data unit by an Integrated Access and Backhaul (IAB) node in a wireless communication system is disclosed. The method comprises steps of receiving, from a network, backhaul (BH) configuration including first information about first bearers associated with a parent node and second information about second bearers associated with a child node, wherein each of the first bearers is configured with a BH identifier belonging to a first BH identifier set, wherein each of the second bearers is configured with a BH identifier belonging to a second BH identifier set; receiving the data unit from the parent node via one of the first bearers; and transmitting the data unit to the child node via one of the second bearers.

Abstract: In the present invention, a UE configured with a SPS resource which occurs periodically for a predetermined time duration transmits indication information using the last SPS resource which occurs last in the predetermined time duration, if the last SPS resource is not sufficient to accommodate uplink data available for transmission. The indication information informs a network that there is uplink data remaining after the UE performs uplink data transmission on the last SPS resource.

Abstract: In the present invention, the method, communication device or processing device selects logical channels related to an uplink (UL) grant and allocates resources of the UL grant to the selected logical channels. The present invention selects the logical channels related to the UL grant among logical channels not related to a suspended radio link control (RLC) entity among RLC entities configured in the communication or processing device.

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: A radio link control (RLC) entity of a transmitting device receives a first RLC service data unit (SDU) from an upper layer of the transmitting device. If the RLC entity receives, from the upper layer, a discard indication to discard the first RLC SDU, the RLC entity checks whether the first RLC SDU has been submitted to a lower layer of the transmitting device. The RLC entity discards the first RLC SDU if neither the first RLC SDU nor a segment of the first RLC SDU has been submitted to the lower layer.

Abstract: The present invention relates to a method of transmitting data by a node in a wireless communication system. In particular, the method includes the steps of: receiving a data unit including information informing whether the data unit is allowed for dynamic route selection; based on the information informing that the data unit is allowed for the dynamic route selection, determining a forwarding path of the data unit; and transmitting the data unit to a next node determined by the forwarding path.