Dynamic UCI Transmission on Non-Orthogonal PUCCH and PUSCH

Solution Overview

Problem

In 5G wireless communication systems, particularly in NR Release 16, the challenge arises when Uplink Control Information (UCI) transmission is not orthogonal between PUCCH and PUSCH, leading to unreliable transmission reliability for URLLC business due to existing standards shifting UCI to PUSCH, which does not guarantee higher reliability required for URLLC.

Innovation Solution

A method where a first time-frequency resource (PUCCH) and a second time-frequency resource (PUSCH) are used non-orthogonally, with identifiers determining whether UCI is transmitted on PUCCH or PUSCH based on Radio Network Temporary Identifiers (RNTIs) for scrambling CRC of DCI, allowing flexible transmission on either channel depending on business type (URLLC or eMBB) and resource availability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If UCI is shifted to be transmitted on PUSCH when PUCCH and PUSCH are non-orthogonal in time domain, then resource utilization is improved, but transmission reliability deteriorates

Engineering Contradiction:

Improveresource utilizationVSAvoidtransmission reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements dynamic selection between PUCCH and PUSCH for UCI transmission based on real-time resource overlap conditions. When PUCCH and PUSCH are non-orthogonal, the system dynamically determines whether to transmit UCI on PUCCH or shift to PUSCH, allowing flexible adaptation to maintain both resource utilization and transmission reliability for different business types (eMBB vs. URLLC).

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies different transmission strategies to different business types (QoS types) locally. For URLLC traffic requiring high reliability, UCI is transmitted on PUCCH even when non-orthogonal with PUSCH. For eMBB traffic, UCI can be shifted to PUSCH. This local differentiation resolves the contradiction by tailoring the transmission path to specific reliability requirements.

Inventive Principle:

Principle #3Local quality

2Reliability

If UCI is transmitted on PUCCH for URLLC when PUCCH and PUSCH are non-orthogonal, then transmission reliability is improved, but resource utilization deteriorates

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidresource utilization

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies different transmission strategies to different business types (QoS types) locally. For URLLC traffic requiring high reliability, UCI is transmitted on PUCCH even when non-orthogonal with PUSCH. For eMBB traffic, UCI can be shifted to PUSCH. This local differentiation resolves the contradiction by tailoring the transmission path to specific reliability requirements.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements dynamic selection between PUCCH and PUSCH for UCI transmission based on real-time resource overlap conditions and business type requirements. The system dynamically determines whether to prioritize reliability (transmit on PUCCH) or resource utilization (shift to PUSCH), allowing flexible adaptation to maintain both metrics under different operational conditions.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If existing standard methods are used for non-orthogonal PUCCH and PUSCH, then system compatibility is maintained, but URLLC reliability requirements are not met

Engineering Contradiction:

Improvesystem compatibilityVSAvoidURLLC reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the UCI transmission mechanism by introducing separate handling for different QoS types (eMBB and URLLC). It divides the transmission decision into distinct paths: one for general compatibility (following existing standards for eMBB) and another for high-reliability requirements (URLLC-specific handling). This segmentation allows the system to maintain compatibility while meeting URLLC reliability demands.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic selection between PUCCH and PUSCH for UCI transmission based on real-time resource overlap conditions and business type requirements. The system dynamically determines whether to prioritize reliability (transmit on PUCCH) or resource utilization (shift to PUSCH), allowing flexible adaptation to maintain both metrics under different operational conditions.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12192970B2Method and device in UE and base station used for wireless communication

Publication Date: 2025.01.07 DIDO WIRELESS INNOVATIONS LLC

AI summary

The present disclosure discloses a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE receives a first signaling, the first signaling being used to determine a first time-frequency resource; receives a second signaling, the second signaling being used to determine a second time-frequency resource; and transmits a first bit block in the first time-frequency resource, or, transmits a first bit block in the second time-frequency resource. Time domain resource occupied by the first time-frequency resource and time domain resource occupied by the second time-frequency resource are non-orthogonal; the first signaling carries a first identifier or a second identifier; whether the first signaling carries the first identifier or the second identifier is used to determine whether the first bit block is transmitted in the first time-frequency resource or transmitted in the second time-frequency resource.