Cross PUCCH Group CSI Reporting for UE Power Reduction

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently reporting channel state information across different physical uplink control channel groups, which affects network operation and UE power consumption during PUCCH SCell activation procedures.

Innovation Solution

The method involves measuring channel state information reference signals for a downlink cell associated with a first PUCCH group and reporting measurement information using an uplink cell of a second PUCCH group, enabling cross PUCCH group CSI reporting to improve network flexibility and UE power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If channel state information is reported using the same PUCCH group as the downlink cell, then reporting accuracy is maintained, but UE power consumption increases and network flexibility is reduced

Engineering Contradiction:

Improvenetwork flexibilityVSAvoidUE power consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The system segments PUCCH resources into multiple groups (first PUCCH group and second PUCCH group), allowing CSI reporting to be separated from the original PUCCH group. This segmentation enables the UE to report CSI using uplink cells from a different PUCCH group, reducing power consumption while maintaining reporting accuracy through dedicated resource allocation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary mechanism where the network configures specific uplink cells in the second PUCCH group for CSI reporting purposes. This intermediary configuration allows the UE to use alternative uplink resources that are optimized for CSI reporting, bridging the gap between power efficiency and reporting accuracy.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If cross PUCCH group CSI reporting is implemented, then network operation flexibility is enhanced, but system complexity increases

Engineering Contradiction:

Improvenetwork operation efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements universality by configuring uplink cells in the second PUCCH group to serve dual purposes: their original functions plus CSI reporting for downlink cells in the first PUCCH group. This multi-functionality enhances network operation efficiency without requiring entirely separate dedicated resources, thereby limiting the increase in system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system employs dynamic configuration where the network can flexibly assign and reassign uplink cells for CSI reporting based on current network conditions and UE capabilities. This dynamic approach allows the system to adapt to changing requirements while maintaining manageable complexity through standardized configuration procedures.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20230096317A1Cross physical uplink control channel group channel state information report

Publication Date: 2023.03.30 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may measure a channel state information reference signal for a downlink cell associated with a first physical uplink control channel (PUCCH) group. The UE may report measurement information associated with channel state information reference signal using an uplink cell of a second PUCCH group associated with the first PUCCH group. Numerous other aspects are described.