# US 2021/0243672 A1 · Methods and systems for routing data through iab nodes in 5g communication networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243672 A1 - Document ID: US20210243672A1 - Status: Published application - Kind: A1 - Application number: 17/053,910 - Filed: 2019-05-09 - Published: 2021-08-05 - Earliest claimed: 2018-05-09 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Aneesh DESHMUKH; Neha SHARMA; Pravjyot Singh DEOGUN; Fasil ABDUL LATHEEF; Shouvik GUHA - Web page: https://patentgrep.com/patent/US20210243672A1 ## CPC - H04W 40/22: using selective relaying for reaching a BTS [Base Transceiver Station] or an access point - H04W 28/0268: {using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] (negotiating SLA or negotiating QoS H04W28/24)} - H04W 40/12: based on transmission quality or channel quality - H04W 40/24: Connectivity information management, e.g. connectivity discovery or connectivity update - H04W 40/248: {Connectivity information update} - H04W 88/14: Backbone network devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Methods and systems for routing data through IAB nodes 201, 202 in 5G communication networks. Embodiments herein allow routing data between a UE 206 and an IAB donor 200 though IAB nodes 201, 202 using adaptation layers of the IAB donor 200 and the IAB nodes 201, 202. The adaptation layers of the IAB donor 200 and the IAB nodes 201, 202 are configured by defining adaptation layer header and functionality. Mapping is performed between bearers/RLC channels of the UE 206 and the IAB node 202 and between bearers/RLC channels of the IAB nodes 201, 202 and the IAB donor 200. The means to perform the mapping is specified by the adaptation layers of either the IAB donor 200 or the IAB nodes 201, 202. The data is routed through the bearers/RLC channels. The embodiments include managing RLC layer functionality using either hop-by-hop ARQ or end-to-end ARQ. ## Claims ### Claim at position 1 1-15. (canceled) ### Claim 16 A method for routing data by a base station communicating with a relaying node using a backhaul link in a wireless communication system, the method comprising: configuring routing information included in a header of a packet in an adaption layer, the adaption layer managing data routing through the backhaul link; and transmitting, based on the routing information, the packet including the data for a user equipment to a relaying node through a communication interface, the relaying node supporting a wireless access link to the user equipment and the backhaul link to other relaying node. ### Claim 17 (depends on 16) The method of claim 16, wherein the base station is an integrated access and backhaul (IAB) donor, and the relaying node and the other relaying node are IAB nodes, and wherein each of the IAB donor and the IAB nodes include the adaption layer. ### Claim 18 (depends on 16) The method of claim 16, wherein the routing information includes a routing ID associated with the adaption layer of the relaying node. ### Claim 19 (depends on 16) The method of claim 16, wherein the header includes at least one of identification information of a destination relaying node, a path ID indicates a path which the packet is to be forwarded to the destination relaying node, and quality of service (QoS) related information. ### Claim 20 (depends on 16) The method of claim 16, wherein the packet to be forwarded to the user equipment is mapped to a radio link control (RLC) channel by the adaption layer. ### Claim 21 A base station for communicating with a relaying node using a backhaul link in a wireless communication system, the base station comprising: a processor configured to: configure routing information included in a header of a packet in an adaption layer, the adaption layer managing data routing through the backhaul link; and transmit, based on the routing information, the packet including the data for a user equipment to a relaying node through a communication interface, the relaying node supporting a wireless access link to the user equipment and the backhaul link to other relaying node. ### Claim 22 (depends on 21) The base station of claim 21, wherein the base station is an integrated access and backhaul (TAB) donor, and the relaying node and the other relaying node are IAB nodes, and wherein each of the IAB donor and the IAB nodes include the adaption layer. ### Claim 23 (depends on 21) The base station of claim 21, wherein the routing information includes a routing ID associated with the adaption layer of the relaying node. ### Claim 24 (depends on 21) The base station of claim 21, wherein the header includes at least one of identification information of a destination relaying node, a path ID indicates a path which the packet is to be forwarded to the destination relaying node, and quality of service (QoS) related information. ### Claim 25 (depends on 21) The base station of claim 21, wherein the packet to be forwarded to the user equipment is mapped to a radio link control (RLC) channel by the adaption layer. ### Claim 26 A method for routing data by a relaying node communicating with a base station or other relaying node using a backhaul link in a wireless communication system, the method comprising: obtaining, from the base station, routing information included in a header of a packet in an adaption layer, the adaption layer managing data routing through the backhaul link; and transmitting, based on the routing information, the packet including the data for a user equipment to the other relaying node or a user equipment through a communication interface, the relaying node supporting a wireless access link to the user equipment and the backhaul link to the other relaying node. ### Claim 27 (depends on 26) The method of claim 26, wherein the base station is an integrated access and backhaul (IAB) donor, and the relaying node and the other relaying node are IAB nodes, and wherein each of the IAB donor and the IAB nodes include the adaption layer. ### Claim 28 (depends on 26) The method of claim 26, wherein the routing information includes a routing ID associated with the adaption layer of the relaying node. ### Claim 29 (depends on 26) The method of claim 26, wherein the header includes at least one of identification information of a destination relaying node, a path ID indicates a path which the packet is to be forwarded to the destination relaying node, and quality of service (QoS) related information. ### Claim 30 (depends on 26) The method of claim 26, further comprising mapping the packet to a radio link control (RLC) channel in the adaption layer of the relaying node. ### Claim 31 A relaying node for communicating with a base station or other relaying node using a backhaul link in a wireless communication system, the relaying node comprising: a processor configured to: obtain, from the base station, routing information included in a header of a packet in an adaption layer, the adaption layer managing data routing through the backhaul link; transmit, based on the routing information, the packet including the data for a user equipment to the other relaying node or the user equipment through a communication interface, the relaying node supporting a wireless access link to the user equipment and the backhaul link to the other relaying node. ### Claim 32 (depends on 31) The relaying node of claim 31, wherein the base station is an integrated access and backhaul (IAB) donor, and the relaying node and the other relaying node are IAB nodes, and wherein each of the IAB donor and the IAB nodes include the adaption layer. ### Claim 33 (depends on 31) The relaying node of claim 31, wherein the routing information includes a routing ID associated with the adaption layer of the relaying node. ### Claim 34 (depends on 31) The relaying node of claim 31, wherein the header includes at least one of identification information of a destination relaying node, a path ID indicates a path which the packet is to be forwarded to the destination relaying node, and quality of service (QoS) related information. ### Claim 35 (depends on 31) The relaying node of claim 31, wherein the processor is further configured to map the packet to a radio link control (RLC) channel in the adaption layer of the relaying node.