PDSCH/PUSCH Scheduling With HARQ-ACK Grouping and Collision Handling

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Solution Overview

Problem

Existing wireless communication systems, particularly in 5G NR, face challenges in efficiently handling multiple PDSCH/PUSCH operations, including collision handling between PDSCH/PUSCH with TDD configurations and multi-PUSCH scheduling signaling, which can lead to inefficiencies and increased latency.

Innovation Solution

Implement methods for separate HARQ-ACK sub-codebook operations, collision handling, and multi-PUSCH scheduling signaling, involving threshold-based grouping of configured component carriers and extended DAI fields, to optimize PDSCH/PUSCH scheduling and reduce collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple PDSCH/PUSCH operations are scheduled in 5G NR systems, then throughput and resource utilization are improved, but collision handling complexity and latency increase

Engineering Contradiction:

ImprovethroughputVSAvoidscheduling complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the scheduling process by introducing separate HARQ-ACK sub-codebooks for different PDSCH/PUSCH operations. This divides the complex scheduling task into manageable parts, with each sub-codebook handling specific operations, thereby reducing overall scheduling complexity while maintaining high throughput

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic threshold-based grouping of configured component carriers, where the grouping configuration can be adjusted based on network conditions and traffic requirements. This dynamic adaptation allows the system to optimize between throughput and complexity in real-time

Inventive Principle:

Principle #15Dynamics

2Reliability

If threshold-based grouping of configured component carriers is implemented, then collision handling is improved, but signaling overhead increases

Engineering Contradiction:

Improvecollision handlingVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent applies partial action by implementing threshold-based grouping only for specific configured component carriers that benefit most from collision handling, rather than applying it universally to all carriers. This selective approach improves collision handling reliability while minimizing unnecessary signaling overhead

Inventive Principle:

Principle #16Partial or excessive action

3Adaptability or versatility

If extended DAI fields are used for multi-PUSCH scheduling, then scheduling flexibility is improved, but message size increases

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidmessage size

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent applies local quality by extending DAI fields only in specific DCI formats and scheduling scenarios where enhanced flexibility is required, rather than extending them universally. This allows the system to gain scheduling flexibility where needed while keeping message sizes compact in other scenarios

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12562878B2Scheduling for multiple PDSCH/PUSCH operations

Publication Date: 2026.02.24 APPLE INC

AI summary

Apparatuses, systems, and methods for determination and scheduling for multiple PDSCH/PUSCH operations in wireless communication, e.g., in 5G NR systems and beyond, including methods for separate HARQ-ACK sub-codebook operation, for collision handling between PDSCH/PUSCH with TDD configurations, and for multi-PXSCH scheduling signaling.