# US 12,010,027 B2 · QOS information exchange to setup a backhaul routing path in IAB > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,027 B2 - Document ID: US12010027B2 - Status: Granted - Kind: B2 - Application number: 17/451,803 - Filed: 2021-10-21 - Published: 2022-04-28 - Granted: 2024-06-11 - Earliest claimed: 2020-10-22 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Naeem Akl; Karl Georg Hampel; Navid Abedini; Jianghong Luo; Luca Blessent; Junyi Li; Tao Luo - Web page: https://patentgrep.com/patent/US12010027B2 ## CPC - H04L 47/24: Traffic characterised by specific attributes, e.g. priority or QoS - H04L 45/302: Route determination based on requested QoS - H04W 8/04: Registration at HLR or HSS [Home Subscriber Server] - H04W 88/085: {Access point devices with remote components} - 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 an aspect of the disclosure, a method, a computer-readable medium, and an apparatus of a first network node are provided. The first network node may send quality of service (QoS) information and a request to a second network node to configure, based on the QoS information, a backhaul routing path for traffic between the first network node and a third network node via the second network node, the third network node having a signaling connection with the first network node. The first network node may communicate, with the second network node in response to the request, QoS mapping information. The first network node may configure an Internet protocol (IP) header of an IP packet based on the communicated QoS mapping information. The first network node may send the IP packet with the configured header to the second network node for routing through the backhaul routing path. ## Claims ### Claim 1 An apparatus for wireless communication of a first network node, comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: send a request to a central unit (CU) of a second network node to configure, based on quality of service (QoS) information provided by the first network node, a backhaul routing path for traffic between the first network node and a third network node via the second network node, the third network node having a signaling connection with the first network node; receive, from the second network node in response to the request, QoS mapping information; configure an Internet protocol (IP) header of an IP packet based on the received QoS mapping information; send the IP packet with the configured IP header to the second network node for routing through the backhaul routing path; and offload the traffic to the second network node based on the IP packet with the configured IP header. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the backhaul routing path includes a chain of at least one backhaul radio link control (RLC) channel between the second network node and the third network node. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the signaling connection comprises at least one of a radio resource control (RRC) signaling connection or an F1 control plane (F1-C) signaling connection. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the third network node also has a signaling connection with the second network node. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the traffic comprises at least one of F1 control plane (F1-C) traffic including control-plane traffic, F1 user plane (F1-U) traffic including user-plane traffic, or non-F1 traffic. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the IP packet is for a wireless device, the wireless device being one of a user equipment (UE), or a mobile termination (MT) of a base station (BS) (BS-MT). ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the UE is a child UE of the first network node or the BS-MT is a child BS-MT of the first network node. ### Claim 8 (depends on 6) The apparatus of claim 6, wherein the UE is a descendant UE of the first network node or the BS-MT is a descendant BS-MT of the first network node. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein the traffic is at least one of downlink (DL) traffic or uplink (UL) traffic. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the QoS information is for at least one of a backhaul radio link control (RLC) channel of the backhaul routing path, a radio bearer mapped to the backhaul routing path, or a QoS flow mapped to the radio bearer that is mapped to the backhaul routing path. ### Claim 11 (depends on 1) The apparatus of claim 1, wherein the request indicates a type of the traffic for routing over the backhaul routing path. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein a type of the traffic comprises at least one of F1 control plane (F1-C), F1-C UE-associated, F1-C non-UE-associated, F1 user plane (F1-U), or non-F1. ### Claim 13 (depends on 1) The apparatus of claim 1, wherein the request indicates at least one of: load information associated with the backhaul routing path; a list of radio bearers or QoS flows mapped to the backhaul routing path; a maximum number of radio bearers or QoS flows that can be mapped to the backhaul routing path; a list or a number of user equipments (UEs) or BSs associated with traffic transported on the backhaul routing path; or a list of a number of wireless BSs that serve UEs or other wireless BSs associated with traffic transported on the backhaul routing path. ### Claim 14 (depends on 1) The apparatus of claim 1, wherein the QoS mapping information indicates a differentiated service codepoint (DSCP) field of the IP packet to be transported over the backhaul routing path. ### Claim 15 (depends on 1) The apparatus of claim 1, wherein the QoS mapping information indicates an IP flow label field of the IP packet to be transported over the backhaul routing path. ### Claim 16 (depends on 1) The apparatus of claim 1, wherein to configure the IP header, the at least one processor is configured to configure the IP header based on the received QoS mapping information by setting within the IP header at least one of a differentiated service codepoint (DSCP) field or an IP flow label field corresponding to values indicated in the QoS mapping information. ### Claim 17 (depends on 1) The apparatus of claim 1, wherein to receive the QoS mapping information, the at least one processor is configured to receive the QoS mapping information with an acknowledgment of the request for the configuration of the backhaul routing path. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the acknowledgment is per offloaded traffic instance associated with the traffic. ### Claim 19 (depends on 1) The apparatus of claim 1, wherein the at least one processor is further configured to receive information indicating user equipments (UEs), mobile terminations (MTs) of BSs, or BSs that serve the UEs or the MTs of the BSs whose traffic can be mapped to the backhaul routing path, wherein the traffic including the IP packet communicated over the backhaul routing path is based on the received information. ### Claim 20 (depends on 1) The apparatus of claim 1, wherein the at least one processor is further configured to receive information indicating at least one of load information that is allowed for the backhaul routing path, a maximum number of radio bearers or QoS flows that can be mapped to the backhaul routing path, a maximum number of user equipments (UEs) or mobile terminations (MTs) of BSs whose traffic can be mapped to the backhaul routing path, or a maximum number of BSs that serve the UEs or the MTs of the BSs whose traffic can be mapped to the backhaul routing path, wherein the traffic including the IP packet communicated over the backhaul routing path is based on the received information. ### Claim 21 (depends on 1) The apparatus of claim 1, wherein the at least one processor is further configured to map an additional radio bearer or QoS flow to the backhaul routing path. ### Claim 22 (depends on 21) The apparatus of claim 21, wherein the at least one processor is further configured to send an indication to the second network node that the additional radio bearer or the QoS flow is mapped to the backhaul routing path. ### Claim 23 (depends on 21) The apparatus of claim 21, wherein the at least one processor is further configured to send a request to the second network node to map the additional radio bearer or the QoS flow to the backhaul routing path, and wherein the at least one processor is coupled to a transceiver. ### Claim 24 An apparatus for wireless communication of a first network node, comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: receive, by a central unit (CU) of the first network node, quality of service (QoS) information and a request from a second network node to configure, based on the QoS information, a backhaul routing path for traffic between the second network node and a third network node via the first network node, the third network node having a signaling connection to the second network node; communicate, with the second network node in response to the request, QoS mapping information; receive, from the second network node, an Internet protocol (IP) packet with a header configured based on the received QoS mapping information; transmit, based on the header, the IP packet for routing to the third network node through the backhaul routing path; and process offload of the traffic based on the IP packet with the configured IP header. ### Claim 25 (depends on 24) The apparatus of claim 24, wherein the signaling connection comprises at least one of a radio resource control (RRC) signaling connection or an F1 control plane (F1-C) signaling connection. ### Claim 26 (depends on 24) The apparatus of claim 24, wherein a type of the traffic comprises at least one of F1 control plane (F1-C), F1-C UE-associated, F1-C non-UE-associated, F1 user plane (F1-U), or non-F1, and wherein the at least one processor is coupled to a transceiver. ### Claim 27 A method of communication of a first network node, comprising: sending a request to a central unit (CU) of a second network node to configure, based on quality of service (QoS) information provided by the first network node, a backhaul routing path for traffic between the first network node and a third network node via the second network node, the third network node having a signaling connection with the first network node; receiving, from the second network node in response to the request, QoS mapping information; configuring an Internet protocol (IP) header of an IP packet based on the received QoS mapping information; sending the IP packet with the configured IP header to the second network node for routing through the backhaul routing path; and offloading the traffic to the second network node based on the IP packet with the configured IP header. ### Claim 28 A method of communication of a first network node, comprising: receiving, by a central unit (CU) of the first network node, quality of service (QoS) information and a request from a second network node to configure, based on the QoS information, a backhaul routing path for traffic between the second network node and a third network node via the first network node, the third network node having a signaling connection to the second network node; communicating, with the second network node in response to the request, QoS mapping information; receiving, from the second network node, an Internet protocol (IP) packet with a header configured based on the received QoS mapping information; transmitting, based on the header, the IP packet for routing to the third network node through the backhaul routing path; and processing offload of the traffic based on the IP packet with the configured IP header. ### Claim 29 An apparatus for wireless communication of a first Integrated Access and Backhaul (IAB) donor control unit (IAB-donor-CU), comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: send, to a second IAB-donor-CU, a request to configure a backhaul routing path via a donor-distributed unit (DU) associated with the second IAB-donor-CU and an IAB-node that has a signaling connection with the first IAB-donor-CU, the first IAB-donor-CU providing quality of service (QoS) information for the backhaul routing path to the second IAB-donor-CU; receive, from the second IAB-donor-CU, mapping information for a QoS of traffic to be carried over the backhaul routing path; and cause the traffic to be offloaded to the second IAB-donor-CU for routing through the backhaul routing path.