Lg Electronics Inc.

Gyeongcheol Lee

Seungjune Yi

Sunyoung Lee

Sunghoon Jung

Hyunsoo Ko

Sukhyon Yoon

Haewook Park

Hyangsun You

Heejeong Cho

Jeonggu Lee

Youngdae Lee

Sangwon Kim

Eunjong Lee

Hyunjung Choe

Geumsan Jo

Jayeong Kim

Seongjoon Kim

A method performed by a wireless device in a wireless communication system includes: 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.

Method and apparatus for routing path switching in wireless communication system

A method performed by a wireless device in a wireless communication system includes: 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; receiving a first protocol data unit (PDU); based on that a condition to perform a packet duplication is satisfied, constructing a second PDU so that a header of the second PDU includes information related to the packet duplication and the second PDU includes a payload of the first PDU; transmitting, to the destination node, the first PDU via the first routing path related to the first routing ID; and transmitting, to the destination node, the second PDU including the header via the second routing path related to the second routing ID.

Method and apparatus for packet duplication in wireless communication system

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.

Method and apparatus for transmitting buffer status report by wireless node in wireless communication system

The present invention relates to a method of transmitting a Medium Access Control (MAC) Protocol Data Unit (PDU) by a user equipment (UE) in a wireless communication system. Especially, the method includes the steps of generating a first MAC PDU including at least one MAC Control Element (CE) and a first data; receiving an uplink grant for transmitting a second data, wherein a transmission time of the first data overlaps with a transmission time of the second data, and wherein a priority of the second data is higher than a priority of the first data; generating a second MAC PDU including the at least one MAC CE and the second data; and transmitting the second MAC PDU.

Method and apparatus for processing data units in conflicted resources in wireless communication system

The present disclosure relates to method and apparatus for failure notification in wireless communications. According to an embodiment of the present disclosure, a method performed by a first wireless device in a wireless communication system comprises: detecting a failure of a backhaul link; performing a connection re-establishment attempt upon detecting the failure of the backhaul link; and transmitting a failure notification to a second wireless device based on a determination that the connection re-establishment attempt fails.

Method and apparatus for failure notification on backhaul link in wireless communication system

The present invention relates to a method of performing uplink transmission by a user equipment (UE) in a wireless communication system. In particular, the method includes the steps of: receiving a configured grant (CG) activation command for a configured uplink grant; based on a size of the configured uplink grant not matching with a size of a pending protocol data unit (PDU) associated with an identified HARQ process, flushing a Hybrid Automatic Repeat Request (HARQ) buffer of the identified HARQ process; and transmitting a CG confirmation medium access control (MAC) control element (CE) using the identified HARQ process.

Method and apparatus for flushing HARQ buffer based on configured grant in wireless communication system

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.

Method and apparatus for processing data unit by IAB node in wireless communication system

The present invention relates to a method of transmitting buffer status report (BSR) by a node in a wireless communication system. In particular, the method includes the steps of: transmitting, to a parent node, a first BSR with starting a timer before receiving data from a child node; triggering a second BSR based on receiving the data from the child node; and based on the data not being transmitted to the parent node until expiration of the timer, transmitting, to the parent node, a scheduling request (SR) for transmission of the second BSR, wherein, based on the data being transmitted to the parent node before the expiration of the timer, the timer is stopped and the second BSR is canceled.

Method and apparatus for transmitting buffer status report in wireless communication system

The present disclosure relates to backhaul status reporting in wireless communications. According to an embodiment of the present disclosure, a method performed by a network node in a wireless communication system comprises: monitoring backhaul links for multiple cell groups; receiving information indicating at least one cell group of which a backhaul status is to be reported among the multiple cell groups; and transmitting a message for reporting the backhaul status of the at least one cell group based on the information.

Method and apparatus for backhaul status reporting in wireless communication system

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.

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.

Method for determining link availability for IAB node, and node using same

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.

Method and apparatus for stopping a configured grant timer before expiration in wireless communication system

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.

Method and apparatus for transmitting buffer size report including dual bitmap information by wireless node in wireless communication system

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.

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Seoul, South Korea

Gyeongcheol Lee