Uplink Control Information Multiplexing for CSI Reporting

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Solution Overview

Problem

In wireless communication systems, the overlap between physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH) resources for channel state information (CSI) reporting can lead to insufficient capacity, resulting in dropped CSI reports and reduced channel condition determination accuracy.

Innovation Solution

The method involves determining when a PUSCH resource overlaps with a PUCCH resource and multiplexing CSI reports from both channels within the PUSCH resource, ensuring that CSI reports are transmitted even when the PUSCH has sufficient capacity, thereby enhancing CSI reporting robustness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If PUSCH and PUCCH resources are used separately for CSI reporting, then each channel can be optimized for its specific function, but resource overlap causes insufficient capacity and dropped CSI reports

Engineering Contradiction:

ImproveCSI reporting reliabilityVSAvoidavailable resource capacity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent merges PUSCH and PUCCH resources into a unified resource pool for CSI reporting. When resource overlap is detected, the system combines the capacity of both channels to accommodate all CSI reports, preventing dropped reports and ensuring reliable transmission of channel state information.

Inventive Principle:

Principle #5Merging (Combining)

2Loss of information

If PUSCH resource capacity is increased to accommodate all CSI reports, then reporting completeness improves, but resource allocation flexibility and other channel functions are reduced

Engineering Contradiction:

ImproveCSI report completenessVSAvoidresource allocation flexibility

Core Design Contradiction:

Loss of informationVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic resource allocation where the system adaptively adjusts the capacity allocation between PUSCH and PUCCH based on detected overlap conditions and CSI reporting requirements. This dynamic approach allows the resource pool to be flexible, expanding capacity when needed for complete CSI reporting while maintaining adaptability for other channel functions when overlap is not an issue.

Inventive Principle:

Principle #15Dynamics

3Reliability

If resource overlap detection and multiplexing is implemented, then CSI reporting robustness improves, but system complexity increases

Engineering Contradiction:

ImproveCSI reporting robustnessVSAvoidresource management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements self-service mechanisms where the system automatically detects resource overlaps between PUSCH and PUCCH and autonomously resolves them through multiplexing operations. This self-service approach minimizes the need for complex external coordination and manual resource management, reducing overall system complexity while maintaining high CSI reporting robustness.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20230254864A1Uplink control information multiplexing

Publication Date: 2023.08.10 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that a physical uplink shared channel (PUSCH) resource for reporting one or more first channel state information (CSI) reports overlaps with a physical uplink control channel (PUCCH) resource for reporting one or more second CSI reports. The UE may transmit the one or more first CSI reports multiplexed with at least a portion of the one or more second CSI reports in uplink control information in the PUSCH resource. Numerous other aspects are provided.