UE-Initiated CSI Reporting for Overlapping PUCCH-PUSCH Uplinks

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Solution Overview

Problem

Existing wireless communication systems face inefficiencies in managing overlapping transmissions of channel state information (CSI) reports, leading to increased latency and resource utilization, particularly in environments with diverse wireless devices and varying network configurations.

Innovation Solution

Implementing mechanisms for user equipment (UE) initiated CSI reporting, allowing devices to selectively report CSI based on specific criteria, such as traffic load and network conditions, thereby optimizing resource allocation and reducing redundant transmissions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If traditional network-initiated CSI reporting is used, then network control is maintained, but latency increases and resource utilization deteriorates

Engineering Contradiction:

ImprovelatencyVSAvoidresource utilization

Core Design Contradiction:

Loss of timeVSProductivity

Solution Approach 1:

The patent inverts the traditional reporting initiation model by allowing UE to autonomously initiate CSI reports based on local buffer status and network conditions, rather than waiting for network-triggered requests. This inversion reduces latency by eliminating waiting time for network scheduling decisions while optimizing resource utilization through UE-based selective reporting.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The UE autonomously determines when to initiate CSI reports by evaluating its own buffer status, traffic load, and channel conditions without requiring continuous network coordination. This self-service mechanism reduces signaling overhead and improves resource efficiency by having the UE make intelligent reporting decisions based on its local state.

Inventive Principle:

Principle #25Self-service

2Measurement precision

If frequent CSI reports are transmitted, then channel state accuracy improves, but resource overhead increases

Engineering Contradiction:

Improvechannel state accuracyVSAvoidresource overhead

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The reporting frequency and triggering conditions are made dynamic rather than static. The UE adapts its CSI reporting behavior based on current buffer status, traffic load, and channel conditions, transmitting reports only when meaningful changes occur. This dynamic approach maintains measurement precision while reducing unnecessary resource overhead from redundant reports.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the reporting parameters (frequency, timing, content) based on UE state and network conditions. By adjusting these parameters dynamically, the system achieves high measurement precision when needed while minimizing resource overhead during stable conditions or when buffer is empty.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If UE autonomously initiates CSI reporting, then latency is reduced and resource efficiency improves, but device complexity increases

Engineering Contradiction:

Improveresource efficiencyVSAvoiddevice complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The autonomous reporting function is segmented into distinct evaluation components: buffer status checking, traffic load assessment, channel condition monitoring, and reporting decision logic. This segmentation makes the complex device function more manageable and implementable through modular processing steps.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary triggering mechanism that bridges the UE's local state and the network's reporting requirements. This intermediary layer processes local conditions and determines whether reporting is necessary, simplifying the overall decision-making process while maintaining resource efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Productivity

If overlapping transmissions are allowed, then throughput increases, but interference management becomes more difficult

Engineering Contradiction:

ImprovethroughputVSAvoidinterference management

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent employs periodic reporting opportunities and structured transmission timing to manage overlapping transmissions. By organizing reports in periodic intervals and using configured grant types with specific timing relationships, the system allows multiple UEs to transmit simultaneously while maintaining manageable interference through predictable patterns.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS20260040304A1Overlapping Transmissions in User Equipment Initiated Channel State Information Reporting

Publication Date: 2026.02.05 OFINNO LLC

AI summary

A wireless device receive one or more radio resource control (RRC) messages comprising one or more channel state information (CSI) report configuration parameters for user-equipment (UE) initiated CSI reporting. The one or more CSI report configuration parameters indicate a physical uplink control channel (PUCCH) resource for: requesting a dynamically scheduled PUSCH to carry the CSI report; or notifying that a Type 1 configured uplink grant PUSCH is to carry the CSI report. The wireless device determines to transmit a first PUCCH transmission, via the PUCCH resource, based on detecting an event for the UE-initiated CSI reporting. In response to the first PUCCH transmission overlapping in time with a physical uplink shared channel (PUSCH) transmission, the wireless device drops an uplink transmission among the first PUCCH transmission and the PUSCH transmission based on whether the PUSCH transmission comprises uplink shared channel (UL-SCH) data.