# US 12,192,816 B2 · Method and apparatus for configuring a relay node > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,816 B2 - Document ID: US12192816B2 - Status: Granted - Kind: B2 - Application number: 18/341,167 - Filed: 2023-06-26 - Published: 2023-10-19 - Granted: 2025-01-07 - Earliest claimed: 2018-04-04 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Weiwei Wang; Hong Wang; Lixiang Xu - Web page: https://patentgrep.com/patent/US12192816B2 ## CPC - H04W 28/0252: {per individual bearer or channel (dynamic wireless traffic scheduling H04W72/12)} - H04B 7/155: Ground-based stations (H04B7/204 takes precedence) - H04L 41/0803: Configuration setting - H04W 40/22: using selective relaying for reaching a BTS [Base Transceiver Station] or an access point - H04W 76/12: Setup of transport tunnels - H04W 76/11: Allocation or use of connection identifiers - H04W 88/085: {Access point devices with remote components} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The disclosure provides a method and apparatus for configuring a relay node. A first node transmits to a second node a message that carries information on a radio bearer for a user accessing the second node. Configuration of the radio bearer for data transmission in a multi-hop network is realized through the above method and apparatus. ## Claims ### Claim 1 A method performed by a first integrated access and backhaul (IAB) node that is a relay node in a wireless communication system, the method comprising: receiving, from an IAB donor node, a first message including configuration information of a first channel, wherein the configuration information includes first information on an identity of the first channel, and second information configuring a radio link control (RLC) entity and a logical channel corresponding to the first channel; receiving, from the IAB donor node, a second message including third information on an identity of a second channel for a second IAB node, fourth information on an identity of the second IAB node, and mapping information for the second channel, wherein the mapping information includes fifth information on the identity of the first channel, and sixth information on an identity of a node transmitting downlink data to the first IAB node; and transmitting the downlink data to the second IAB node via the second channel, based on the first message and the second message. ### Claim 2 (depends on 1) The method of claim 1, wherein the second channel is identified among one or more channels between the first IAB node and the second IAB node. ### Claim 3 (depends on 1) The method of claim 1, wherein the downlink data is received from the IAB donor node or an upper IAB node, which is identified by the sixth information. ### Claim 4 (depends on 3) The method of claim 3, wherein the second IAB node is a lower IAB node. ### Claim 5 (depends on 4) The method of claim 4, wherein the downlink data is forwarded from the second IAB node to a terminal. ### Claim 6 A method performed by an integrated access and backhaul (IAB) donor node in a wireless communication system, the method comprising: transmitting, to a first IAB node that is a relay node, a first message including configuration information of a first channel, wherein the configuration information includes first information on an identity of the first channel, and second information configuring a radio link control (RLC) entity and a logical channel corresponding to the first channel; and transmitting, to the first IAB node, a second message including third information on an identity of a second channel for a second IAB node, fourth information on an identity of the second LAB node, and mapping information for the second channel, wherein the mapping information includes fifth information on the identity of the first channel, and sixth information on an identity of a node transmitting downlink data to the first IAB node, wherein the downlink data is forwarded from the first IAB node to the second IAB node via the second channel, based on the first message and the second message. ### Claim 7 (depends on 6) The method of claim 6, wherein the second channel is one among one or more channels between the first IAB node and the second IAB node. ### Claim 8 (depends on 6) The method of claim 6, wherein the method further comprises transmitting the downlink data to the first IAB node based on the sixth information. ### Claim 9 (depends on 8) The method of claim 8, wherein the second IAB node is a lower IAB node. ### Claim 10 (depends on 9) The method of claim 9, wherein the downlink data is forwarded from the second IAB node to a terminal. ### Claim 11 A first integrated access and backhaul (IAB) node that is a relay node in a wireless communication system, the first IAB node comprising: a transceiver; and a controller coupled with the transceiver and configured to: receive, from an IAB donor node, a first message including configuration information of a first channel, wherein the configuration information includes first information on an identity of the first channel, and second information configuring a radio link control (RLC) entity and a logical channel corresponding to the first channel, receive, from the IAB donor node, a second message including third information on an identity of a second channel for a second IAB node, fourth information on an identity of the second IAB node, and mapping information for the second channel, wherein the mapping information includes fifth information on the identity of the first channel, and sixth information on an identity of a node transmitting downlink data to the first IAB node, and transmit the downlink data to the second IAB node via the second channel, based on the first message and the second message. ### Claim 12 (depends on 11) The first IAB node of claim 11, wherein the second channel is identified among one or more channels between the first IAB node and the second IAB node. ### Claim 13 (depends on 11) The first IAB node of claim 11, wherein the downlink data is received from the IAB donor node or an upper IAB node, which is identified by the sixth information. ### Claim 14 (depends on 13) The first IAB node of claim 13, wherein the second IAB node is a lower IAB node. ### Claim 15 (depends on 14) The first IAB node of claim 14, wherein the downlink data is forwarded from the second IAB node to a terminal. ### Claim 16 An integrated access and backhaul (IAB) donor node in a wireless communication system, the IAB donor node comprising: a transceiver; and a controller coupled with the transceiver and configured to: transmit, to a first IAB node that is a relay node, a first message including configuration information of a first channel, wherein the configuration information includes first information on an identity of the first channel, and second information configuring a radio link control (RLC) entity and a logical channel corresponding to the first channel, and transmit, to the first IAB node, a second message including third information on an identity of a second channel for a second IAB node, fourth information on an identity of the second IAB node, and mapping information for the second channel, wherein the mapping information includes fifth information on the identity of the first channel, and sixth information on an identity of a node transmitting downlink data to the first IAB node, wherein the downlink data is forwarded from the first IAB node to the second IAB node via the second channel, based on the first message and the second message. ### Claim 17 (depends on 16) The IAB donor node of claim 16, wherein the second channel is one among one or more channels between the first IAB node and the second IAB node. ### Claim 18 (depends on 16) The IAB donor node of claim 16, wherein the controller is further configured to transmit the downlink data to the first IAB node based on the sixth information. ### Claim 19 (depends on 18) The IAB donor node of claim 18, wherein the second IAB node is a lower IAB node. ### Claim 20 (depends on 19) The IAB donor node of claim 19, wherein the downlink data is forwarded from the second IAB node to a terminal.