Multi-Stage DCI Association Indication for Wireless Communication

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Solution Overview

Problem

In wireless communication systems, the association between multiple stages of downlink control information (DCI) is challenging due to different CORESET and SS set configurations, leading to difficulties in DCI detection and recovery by user equipment (UE), which can result in failed communications.

Innovation Solution

The method involves indicating an association between first-stage and second-stage DCI, allowing the UE to recover the correct second-stage DCI based on this indication, enabling the network node to configure stages differently to preserve air interface resources and improve communication efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple-stage DCI are configured with different CORESET and SS set configurations, then network capacity and flexibility are improved, but DCI detection and recovery reliability deteriorates

Engineering Contradiction:

Improveflexibility in configuring transmission stagesVSAvoidDCI detection and recovery reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces an association indication as an intermediary element that links the first-stage DCI and second-stage DCI together. This association indication acts as a mediator that enables the UE to correctly identify and recover the second-stage DCI based on the first-stage DCI, thereby maintaining reliability while allowing different configurations for each stage

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If flexible configuration of transmission stages is implemented, then network capacity is improved, but complexity in DCI association increases

Engineering Contradiction:

Improvenetwork capacityVSAvoidcomplexity in DCI association

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the DCI into two distinct stages (first-stage DCI and second-stage DCI) with different configurations. This segmentation allows each stage to be optimized independently for different purposes, thereby increasing network capacity while managing complexity through structured separation

Inventive Principle:

Principle #1Segmentation

3Quantity of substance

If multi-stage DCI are transmitted without association indication, then air interface resources are saved, but communication reliability deteriorates

Engineering Contradiction:

Improveair interface resourcesVSAvoidcommunication reliability

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent applies partial action by including only the necessary association indication information in the first-stage DCI, rather than repeating all configuration details. This partial inclusion of association information maintains communication reliability while avoiding unnecessary redundancy that would consume additional air interface resources

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250016795A1Associating multiple-stage downlink control information

Publication Date: 2025.01.09 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of an association between first-stage downlink control information (DCI) and second-stage DCI. The UE may recover the second-stage DCI based at least in part on the indication of the association. Numerous other aspects are described.