# US 2026/0100904 A1 · Method and apparatus for transmitting/receiving wireless signal in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0100904 A1 - Document ID: US20260100904A1 - Status: Published application - Kind: A1 - Application number: 19/104,079 - Filed: 2023-09-13 - Published: 2026-04-09 - Earliest claimed: 2022-09-13 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Youngdae LEE; Seoyoung BACK; Laeyoung KIM; Seungmin LEE; Seokjung KIM - Web page: https://patentgrep.com/patent/US20260100904A1 ## CPC - H04L 45/24: Multipath - H04W 76/15: Setup of multiple wireless link connections - H04W 40/22: using selective relaying for reaching a BTS [Base Transceiver Station] or an access point - H04W 76/20: Manipulation of established connections - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04W 76/14: Direct-mode setup - H04W 80/02: Data link layer protocols - H04W 88/04: adapted for relaying to or from another terminal or user - H04W 92/18: between terminal devices - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract In the present disclosure, a method of transmitting a signal by a user equipment (UE) in a wireless communication system, may comprise: receiving a first message including configuration information regarding a multi-path (MP) bearer configured with a plurality of radio link control (RLC) entities including at least one first RLC entity related to a direct path to a network and at least one second RLC entity related to an indirect path to the network; receiving a second message including information regarding activation/deactivation of each RLC entity; and transmitting a data unit based on the MP bearer configured through the configuration information. ## Claims ### Claim 1 A method performed by a user equipment (UE), the method comprising: receiving a first message including configuration information regarding a multi-path (MP) bearer configured with a plurality of radio link control (RLC) entities including at least one first RLC entity related to a direct path to a network and at least one second RLC entity related to an indirect path to the network; receiving a second message including information regarding activation/deactivation of each RLC entity; and transmitting a data unit based on the MP bearer configured through the configuration information, wherein the configuration information includes information regarding data duplication for the data unit transmission, wherein the information regarding activation/deactivation of each RLC entity is configured based on RLC entity indexes for the plurality of RLC entities, wherein the RLC entity indexes are determined based on an indexing order in which at least one first RLC entity index of the at least one first RLC entity related to the direct path is followed by at least one second RLC entity index of the at least one second RLC entity related to the indirect path, and wherein the data unit transmission is duplicated based on the data duplication on activated RLC entities among the plurality of RLC entities. ### Claim 2 (depends on 1) The method of claim 1, wherein the information regarding activation/deactivation of each RLC entity is configured as a medium access control (MAC) control element (CE). ### Claim 3 (depends on 2) The method of claim 2, wherein the MAC CE includes an activation/deactivation indication per each RLC entity index. ### Claim 4 (depends on 1) The method of claim 1, wherein the second message including the information regarding activation/deactivation of each RLC entity is received through the direct path. ### Claim 5 (depends on 1) The method of claim 1, wherein the second message including the information regarding activation/deactivation of each RLC entity is received through a remote UE in the indirect path. ### Claim 6 (depends on 1) The method of claim 1, wherein the at least one first RLC entity index is lower than the at least one second RLC entity index. ### Claim 7 (depends on 1) The method of claim 1, wherein the data unit is a packet data convergence protocol (PDCP) data unit, and the data duplication is PDCP data unit duplication. ### Claim 8 (depends on 1) The method of claim 1, wherein the at least one second RLC entity is at least one sidelink (SL) RLC entity related to a relay UE in the indirect path to the network. ### Claim 9 (depends on 1) The method of claim 1, wherein the first message is received through a radio resource control (RRC) signaling. ### Claim 10 (depends on 1) The method of claim 1, wherein the plurality of RLC entity indexes are logical channel identifiers of the plurality of RLC entities. ### Claim 11 (depends on 1) A non-transitory computer-readable medium storing instructions, when executed by a processor, that cause the processor to perform the method of claim 1. ### Claim 12 A device comprising: a memory configured to store instructions; and a processor configured to perform operations by executing the instructions, wherein the operations performed by the processor comprise: receiving a first message including configuration information regarding a multi-path (MP) bearer configured with a plurality of radio link control (RLC) entities including at least one first RLC entity related to a direct path to a network and at least one second RLC entity related to an indirect path to the network; receiving a second message including information regarding activation/deactivation of each RLC entity; and transmitting a data unit based on the MP bearer configured through the configuration information, wherein the configuration information includes information regarding data duplication for the data unit transmission, wherein the information regarding activation/deactivation of each RLC entity is configured based on RLC entity indexes for the plurality of RLC entities, wherein the RLC entity indexes are determined based on an indexing order in which at least one first RLC entity index of the at least one first RLC entity related to the direct path is followed by at least one second RLC entity index of the at least one second RLC entity related to the indirect path, and wherein the data unit transmission is duplicated based on the data duplication on activated RLC entities among the plurality of RLC entities. ### Claim 13 (depends on 12) The device of claim 12, wherein the device is a user equipment (UE) operating in a 3rd generation partnership project (3GPP) based wireless communication system.