# US 12,004,071 B2 · User equipment Layer 2 buffer operation in IAB networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,071 B2 - Document ID: US12004071B2 - Status: Granted - Kind: B2 - Application number: 17/656,943 - Filed: 2022-03-29 - Published: 2022-10-06 - Granted: 2024-06-04 - Earliest claimed: 2021-04-01 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Murali Narasimha; Ralf Rossbach; Sarma V. Vangala - Web page: https://patentgrep.com/patent/US12004071B2 ## CPC - H04W 28/02: Traffic management, e.g. flow control or congestion control - H04W 40/248: {Connectivity information update} - H04W 28/0257: {the individual bearer or channel having a maximum bit rate or a bit rate guarantee} - H04W 40/02: Communication route or path selection, e.g. power-based or shortest path routing - 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 A user equipment (UE) is configured to access a first base station in a network via an access link, wherein the first base station is an integrated access and backhaul (IAB) node in a first IAB network topology connected to a second base station via one or more backhaul links, wherein the second base station is an IAB-donor for the first base station, report, to the first base station, information for reducing a maximum data rate for the UE when the UE is deployed in one or more IAB network topologies and receive data packages with a reduced maximum data rate based on the reported information. ## Claims ### Claim 1 A processor of a user equipment (UE) configured to perform operations comprising: accessing a first base station in a network via an access link, wherein the first base station is an integrated access and backhaul (IAB) node in a first IAB network topology connected to a second base station via one or more backhaul links, wherein the second base station is an IAB-donor for the first base station; reporting, to the first base station, information to be used by the network for reducing a maximum data rate for the UE when the UE is deployed in one or more IAB network topologies, wherein the reported information indicates a reduction value for the maximum data rate based on whether the first IAB network topology is a standalone IAB network topology or a non-standalone IAB network topology, wherein the standalone IAB network topology comprises Fifth Generation (5G) backhaul links and the non-standalone IAB network topology comprises 5G and Long-Term Evolution (LTE) backhaul links; and receiving data packages with a reduced maximum data rate based on the reported information. ### Claim 2 (depends on 1) The processor of claim 1, wherein the reduction value for the maximum data rate is further based on whether the backhaul links operate in Frequency Range 1 (FR1), Frequency Range 2 (FR2), or a combination of FR1 and FR2. ### Claim 3 (depends on 1) The processor of claim 1, wherein the reduction value for the maximum data rate is further based on whether the access link operates in Frequency Range 1 (FR1), Frequency Range 2 (FR2), or a combination of FR1 and FR2. ### Claim 4 (depends on 1) The processor of claim 1, wherein the reduction value for the maximum data rate is further based on a total number of backhaul links in the first IAB network topology. ### Claim 5 (depends on 1) The processor of claim 1, wherein the reduction value is provided as a single value to be applied when the first IAB network topology is any one of a list of IAB network topologies. ### Claim 6 (depends on 1) The processor of claim 1, wherein the reduction value is to be applied for each backhaul link in the first IAB network topology. ### Claim 7 A user equipment (UE), comprising: a transceiver configured to communicate with a network; and a processor communicatively coupled to the transceiver and configured to perform operations comprising: accessing a first base station in a network via an access link, wherein the first base station is an integrated access and backhaul (IAB) node in a first IAB network topology connected to a second base station via one or more backhaul links, wherein the second base station is an IAB-donor for the first base station; reporting, to the first base station, information to be used by the network for reducing a maximum data rate for the UE when the UE is deployed in one or more IAB network topologies, wherein the reported information indicates a reduction value for the maximum data rate based on whether the first IAB network topology is a standalone IAB network topology or a non-standalone IAB network topology, wherein the standalone IAB network topology comprises 5G backhaul links and the non-standalone IAB network topology comprises 5G and LTE backhaul links; and receiving data packages with a reduced maximum data rate based on the reported information. ### Claim 8 (depends on 7) The UE of claim 7, wherein the reduction value for the maximum data rate is further based on whether the backhaul links operate in Frequency Range 1 (FR1), Frequency Range 2 (FR2), or a combination of FR1 and FR2. ### Claim 9 (depends on 7) The UE of claim 7, wherein the reduction value for the maximum data rate is further based on whether the access link operates in Frequency Range 1 (FR1), Frequency Range 2 (FR2), or a combination of FR1 and FR2. ### Claim 10 (depends on 7) The UE of claim 7, wherein the reduction value for the maximum data rate is further based on a total number of the backhaul links in the first IAB network topology. ### Claim 11 (depends on 7) The UE of claim 7, wherein the reduction value is provided as a single value to be applied when the first IAB network topology is any one of a list of IAB network topologies. ### Claim 12 (depends on 7) The UE of claim 7, wherein the reduction value is to be applied for each backhaul link in the first IAB network topology. ### Claim 13 A processor of a first base station in a network configured to perform operations comprising: communicating with a user equipment (UE) via an access link, wherein the first base station is an integrated access and backhaul (IAB) node in a first IAB network topology connected to a second base station via one or more backhaul links, wherein the second base station is an IAB-donor for the first base station; receiving, from the UE, reported information to be used by the network for reducing a maximum data rate for the UE when the UE is deployed in one or more IAB network topologies, wherein the reported information indicates a reduction value for the maximum data rate based on whether the first IAB network topology is a standalone IAB network topology or a non-standalone IAB network topology, wherein the standalone IAB network topology comprises 5G backhaul links and the non-standalone IAB network topology comprises 5G and LTE backhaul links; and transmitting data packages to the UE with a reduced maximum data rate when, based on the reported information. ### Claim 14 (depends on 13) The processor of claim 13, wherein the reduction value for the maximum data rate is further based on whether the backhaul links operate in Frequency Range 1 (FR1), Frequency Range 2 (FR2), or a combination of FR1 and FR2. ### Claim 15 (depends on 13) The processor of claim 13, wherein the reduction value for the maximum data rate is further based on whether the access link operates in Frequency Range 1 (FR1), Frequency Range 2 (FR2), or a combination of FR1 and FR2. ### Claim 16 (depends on 13) The processor of claim 13, wherein the reduction value for the maximum data rate is further based on a total number of backhaul links in the first IAB network topology. ### Claim 17 (depends on 13) The processor of claim 13, wherein the reduction value is provided as a single value to be applied when the first IAB network topology is any one of a list of IAB network topologies. ### Claim 18 (depends on 13) The processor of claim 13, wherein the reduction value is to be applied for each backhaul link in the first IAB network topology, wherein the reduction value is further based at least on a number of backhaul links in the first IAB network topology.