# US 12,224,902 B2 · Techniques for providing assistance information for reduced MIMO layers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,902 B2 - Document ID: US12224902B2 - Status: Granted - Kind: B2 - Application number: 17/143,107 - Filed: 2021-01-06 - Published: 2022-07-07 - Granted: 2025-02-11 - Earliest claimed: 2021-01-06 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Arvind Vardarajan Santhanam; Brian Clarke Banister; Kuo-Chun Lee; Aamod Khandekar; Enoch Shiao-Kuang Lu; Satashu Goel; Daniel Amerga; Karthik Venkatram; Subashini Krishnamurthy; Xuepan Guan; Mouaffac Ambriss; Peter Pui Lok Ang; James Francis Geekie; Sasikanth Reddy Adapala; Sundaresan Tambaram Kailasam - Web page: https://patentgrep.com/patent/US12224902B2 ## CPC - H04B 7/0404: the mobile station comprising multiple antennas, e.g. to provide uplink diversity - H04L 41/0816: the condition being an adaptation, e.g. in response to network events - H04B 7/0413: MIMO systems - H04B 7/0417: Feedback systems - H04L 43/06: Generation of reports - H04L 43/16: Threshold monitoring - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 72/20: Control channels or signalling for resource management - H04W 72/51: based on terminal or device properties - H04L 43/08: Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters - H04B: TRANSMISSION - 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 Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may transmit assistance information to a base station to request an update or a modification to one or more communication parameters configured at the UE. Such communication parameters may include a quantity of uplink multiple-input multiple-output (MIMO) layers, a quantity of downlink MIMO layers, a minimum scheduling offset, a maximum quantity of component carriers, or a maximum aggregated bandwidth for a secondary cell group (SCG). In some implementations, the UE may transmit the assistance information requesting the update or modification to one or more of such communication parameters based on detecting that the UE satisfies one or more triggering conditions or thresholds. ## Claims ### Claim 1 A method for wireless communication at a user equipment (UE), comprising: receiving, from a base station, a configuration for reporting assistance information based at least in part on a capability of the UE; transmitting, to the base station, assistance information associated with a quantity of uplink multiple-input multiple-output layers based at least in part on the UE satisfying a first predetermined trigger threshold, wherein the UE satisfying the first predetermined trigger threshold comprises at least an uplink block error rate being above a threshold block error rate, or an amount of data in a buffer at the UE being less than a threshold amount of data, or any combination thereof; and receiving, from the base station, control signaling indicating a re-configuration of the quantity of uplink multiple-input multiple-output layers based at least in part on the transmitted assistance information. ### Claim 2 (depends on 1) The method of claim 1, wherein transmitting the assistance information associated with the quantity of uplink multiple-input multiple-output layers comprises: transmitting an indication of a first quantity of uplink multiple-input multiple output layers less than a second quantity of uplink multiple-input multiple output layers associated with the capability of the UE. ### Claim 3 (depends on 2) The method of claim 2, wherein the assistance information associated with the quantity of uplink multiple-input multiple-output layers requests a reduction from the second quantity of uplink multiple-input multiple output layers to the first quantity of uplink multiple-input multiple output layers. ### Claim 4 (depends on 1) The method of claim 1, further comprising: receiving, from an application of the UE via a modem control interface, an indication that the UE satisfies the first predetermined trigger threshold, wherein transmitting the assistance information associated with the quantity of uplink multiple-input multiple-output layers is based at least in part on the indication from the application of the UE. ### Claim 5 (depends on 1) The method of claim 1, wherein the UE satisfying the first predetermined trigger threshold comprises a latency condition of an application of the UE being less than a threshold latency. ### Claim 6 (depends on 1) The method of claim 1, further comprising: transmitting, to the base station, assistance information associated with a quantity of downlink multiple-input multiple-output layers based at least in part on the UE satisfying a second predetermined trigger threshold; and receiving, from the base station, second control signaling indicating a re-configuration of the quantity of downlink multiple-input multiple-output layers based at least in part on the assistance information associated with the quantity of downlink multiple-input multiple-output layers. ### Claim 7 (depends on 6) The method of claim 6, wherein transmitting the assistance information associated with the quantity of downlink multiple-input multiple-output layers comprises: transmitting an indication of a first quantity of downlink multiple-input multiple output layers less than a second quantity of downlink multiple-input multiple output layers associated with the capability of the UE. ### Claim 8 (depends on 7) The method of claim 7, wherein the assistance information associated with the quantity of downlink multiple-input multiple-output layers requests a reduction from the second quantity of downlink multiple-input multiple output layers to the first quantity of downlink multiple-input multiple output layers. ### Claim 9 (depends on 6) The method of claim 6, further comprising: receiving, from an application of the UE via a modem control interface, an indication that the UE satisfies the second predetermined trigger threshold, wherein transmitting the assistance information associated with the quantity of downlink multiple-input multiple-output layers is based at least in part on the indication from the application of the UE. ### Claim 10 (depends on 6) The method of claim 6, wherein the UE satisfying the second predetermined trigger threshold comprises at least a second latency condition of an application of the UE being less than a threshold latency, or a downlink throughput to the UE being less than a threshold throughput, or any combination thereof. ### Claim 11 (depends on 1) The method of claim 1, further comprising: transmitting, to the base station, assistance information associated with a scheduling offset parameter based at least in part on the UE satisfying a second predetermined trigger threshold; and receiving, from the base station, second control signaling indicating a re-configuration of the scheduling offset parameter based at least in part on the assistance information associated with the scheduling offset parameter. ### Claim 12 (depends on 11) The method of claim 11, wherein transmitting the assistance information associated with the scheduling offset parameter comprises: transmitting an indication of a first quantity of slots for the scheduling offset parameter greater than a second quantity of slots associated with the capability of the UE. ### Claim 13 (depends on 12) The method of claim 12, wherein the assistance information associated with the scheduling offset parameter requests an increase from the second quantity of slots to the first quantity of slots for the scheduling offset parameter. ### Claim 14 (depends on 11) The method of claim 11, further comprising: receiving, from an application of the UE via a modem control interface, an indication that the UE satisfies the second predetermined trigger threshold, wherein transmitting the assistance information associated with the scheduling offset parameter is based at least in part on the indication from the application of the UE. ### Claim 15 (depends on 11) The method of claim 11, wherein the UE satisfying the second predetermined trigger threshold comprises at least a second latency condition of an application of the UE being less than a threshold latency. ### Claim 16 (depends on 1) The method of claim 1, further comprising: transmitting, to the base station, assistance information associated with one or both of a quantity of component carriers or an aggregated bandwidth allocation for a secondary cell group based at least in part on the UE satisfying a second predetermined trigger threshold; and receiving, from the base station, second control signaling indicating a re-configuration of one or both of the quantity of component carriers or the aggregated bandwidth allocation for the secondary cell group based at least in part on the assistance information associated with one or both of the quantity of component carriers or the aggregated bandwidth allocation for the secondary cell group. ### Claim 17 (depends on 16) The method of claim 16, wherein transmitting the assistance information associated with the quantity of component carriers comprises: transmitting an indication of a first quantity of component carriers less than a second quantity of component carriers configured at the UE. ### Claim 18 (depends on 17) The method of claim 17, wherein the assistance information associated with the quantity of component carriers requests a reduction from the second quantity of component carriers to the first quantity of component carriers. ### Claim 19 (depends on 16) The method of claim 16, wherein transmitting the assistance information associated with the aggregated bandwidth allocation for the secondary cell group comprises: transmitting an indication of a first aggregated bandwidth allocation for the secondary cell group less than a second aggregated bandwidth allocation for the secondary cell group configured at the UE. ### Claim 20 (depends on 19) The method of claim 19, wherein the assistance information associated with the aggregated bandwidth allocation for the secondary cell group requests a reduction from the second aggregated bandwidth allocation for the secondary cell group to the first aggregated bandwidth allocation for the secondary cell group. ### Claim 21 (depends on 16) The method of claim 16, further comprising: receiving, from an application of the UE via a modem control interface, an indication to disable dual-connectivity, wherein transmitting the assistance information associated with one or both of the quantity of component carriers or the aggregated bandwidth allocation for the secondary cell group is based at least in part on the indication to disable dual-connectivity. ### Claim 22 (depends on 16) The method of claim 16, wherein receiving the re-configuration of one or both of the quantity of component carriers or the aggregated bandwidth allocation for the secondary cell group comprises: receiving a command to release the secondary cell group. ### Claim 23 (depends on 16) The method of claim 16, further comprising: starting a timer based at least in part on transmitting the assistance information associated with one or both of the quantity of component carriers or the aggregated bandwidth allocation for the secondary cell group; and initiating a radio link failure for the secondary cell group based at least in part on receiving the second control signaling indicating the re-configuration of one or both of the quantity of component carriers or the aggregated bandwidth allocation for the secondary cell group after expiration of the timer. ### Claim 24 (depends on 16) The method of claim 16, wherein the UE satisfying the second predetermined trigger threshold comprises at least an uplink throughput from the UE being less than a threshold uplink throughput, or a downlink throughput to the UE being less than a threshold downlink throughput, or an indication from an application of the UE that a display is off being received, or any combination thereof. ### Claim 25 (depends on 1) The method of claim 1, further comprising: transmitting, to the base station, signaling indicating the capability of the UE for the reporting of the assistance information, wherein receiving the configuration for the reporting of the assistance information is based at least in part on transmitting the signaling indicating the capability of the UE. ### Claim 26 An apparatus for wireless communication at a user equipment (UE), comprising: one or more processors; memory coupled with the one or more processors; and instructions stored in the memory and executable by the one or more processors to cause the apparatus to: receive, from a base station, a configuration for reporting assistance information based at least in part on a capability of the UE; transmit, to the base station, assistance information associated with a quantity of uplink multiple-input multiple-output layers based at least in part on the UE satisfying a first predetermined trigger threshold, wherein the UE satisfying the first predetermined trigger threshold comprises at least an uplink block error rate being above a threshold block error rate, or an amount of data in a buffer at the UE being less than a threshold amount of data, or any combination thereof; and receive, from the base station, control signaling indicating a re-configuration of the quantity of uplink multiple-input multiple-output layers based at least in part on the transmitted assistance information. ### Claim 27 (depends on 26) The apparatus of claim 26, wherein the instructions are further executable by the one or more processors to cause the apparatus to: transmit, to the base station, assistance information associated with a quantity of downlink multiple-input multiple-output layers based at least in part on the UE satisfying a second predetermined trigger threshold; and receive, from the base station, second control signaling indicating a re-configuration of the quantity of downlink multiple-input multiple-output layers based at least in part on the assistance information associated with the quantity of downlink multiple-input multiple-output layers. ### Claim 28 (depends on 26) The apparatus of claim 26, wherein the instructions are further executable by the one or more processors to cause the apparatus to: transmit, to the base station, assistance information associated with a scheduling offset parameter based at least in part on the UE satisfying a second predetermined trigger threshold; and receive, from the base station, second control signaling indicating a re-configuration of the scheduling offset parameter based at least in part on the assistance information associated with the scheduling offset parameter. ### Claim 29 An apparatus for wireless communication at a user equipment (UE), comprising: means for receiving, from a base station, a configuration for reporting assistance information based at least in part on a capability of the UE; means for transmitting, to the base station, assistance information associated with a quantity of uplink multiple-input multiple-output layers based at least in part on the UE satisfying a first predetermined trigger threshold, wherein the UE satisfying the first predetermined trigger threshold comprises at least an uplink block error rate being above a threshold block error rate, or an amount of data in a buffer at the UE being less than a threshold amount of data, or any combination thereof; and means for receiving, from the base station, control signaling indicating a re-configuration of the quantity of uplink multiple-input multiple-output layers based at least in part on the transmitted assistance information. ### Claim 30 A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by one or more processors to: receive, from a base station, a configuration for reporting assistance information based at least in part on a capability of the UE; transmit, to the base station, assistance information associated with a quantity of uplink multiple-input multiple-output layers based at least in part on the UE satisfying a first predetermined trigger threshold, wherein the UE satisfying the first predetermined trigger threshold comprises at least an uplink block error rate being above a threshold block error rate, or an amount of data in a buffer at the UE being less than a threshold amount of data, or any combination thereof; and receive, from the base station, control signaling indicating a re-configuration of the quantity of uplink multiple-input multiple-output layers based at least in part on the transmitted assistance information.