CSI Reporting Priority Rules for Overlapping Uplink Channels

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Solution Overview

Problem

Existing wireless communication systems face limitations in communication flexibility and efficiency, particularly in managing channel state information reports and prioritization of uplink channels.

Innovation Solution

Implementing a priority indicator in downlink control information (DCI) formats for scheduling/activation of physical channels, allowing for efficient channel state information (CSI) reporting when overlapping channels occur.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If channel state information reporting is performed on overlapping physical uplink channels without priority rules, then communication reliability is maintained, but communication flexibility and efficiency are limited

Engineering Contradiction:

Improvecommunication flexibilityVSAvoidchannel management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a priority indicator parameter in DCI formats to dynamically change the behavior of CSI reporting. When channels overlap, the priority indicator determines whether to report or drop CSI, transforming the rigid channel management into a flexible, parameter-driven system that adapts to different channel conditions and service requirements

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamic channel management by allowing the priority indicator to be configured differently based on service types (e.g., eMBB, URLLC). This enables the system to dynamically adjust CSI reporting behavior according to real-time network conditions and service priorities, improving communication flexibility without requiring complex static configurations

Inventive Principle:

Principle #15Dynamics

2Productivity

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidchannel reporting reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies partial action by selectively performing CSI reporting only when the priority indicator permits, rather than always reporting. This avoids unnecessary transmissions on overlapping channels, improving efficiency while maintaining reliability for high-priority services. The system performs exactly the right amount of reporting needed based on channel conditions and service priorities

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The priority indicator serves as an intermediary mechanism that mediates between the conflicting requirements of communication efficiency and reliability. It translates service requirements into concrete channel reporting decisions, allowing the system to optimize efficiency without compromising the reliability of critical communications

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If existing DCI formats are used without priority indicators, then device complexity is reduced, but adaptability to different service requirements is limited

Engineering Contradiction:

Improveservice adaptabilityVSAvoidDCI format complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent enhances the universality of DCI formats by adding a multi-functional priority indicator that can serve different purposes depending on the service type. The same DCI format structure handles both traditional scheduling functions and the new priority indication function, allowing a single mechanism to adapt to multiple service requirements (eMBB, URLLC, etc.) without requiring separate specialized formats for each service

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent segments the channel reporting decision process into distinct components: the priority indicator field in DCI, the channel overlap detection logic, and the reporting decision mechanism. This segmentation allows each component to be independently configured and optimized, reducing overall system complexity while improving service adaptability

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12471104B2User equipments, base stations and methods for priority rules of channel state information reports

Publication Date: 2025.11.11 SHARP KK

AI summary

A user equipment (UE) is described. The UE includes receiving circuitry configured to receive on a physical downlink control channel (PDCCH), a downlink control information (DCI) format used for scheduling of a physical downlink shared channel (PDSCH). The DCI includes a priority indicator. The UE further includes transmitting circuitry configured to perform channel state information (CSI) reporting on a first physical uplink channel based on the priority indicator in a case that the first physical uplink channel overlaps with a second physical uplink channel.