Grant-Free HARQ-ACK Codebook Segmentation for 5G Resource Efficiency
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Solution Overview
Problem
There is a need to enhance grant-free based data transmission and reception efficiency in 5G wireless communication systems to effectively provide various services with improved radio resource utilization.
Innovation Solution
The implementation of a method and apparatus for grant-free based data transmission in 5G wireless communication systems, which includes configuring semi-static and dynamic HARQ-ACK codebooks, and efficiently managing HARQ-ACK information transmission to optimize resource allocation and scheduling, allowing for priority-based service provision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If grant-free based data transmission is implemented, then radio resource utilization is improved, but system complexity increases due to HARQ-ACK codebook management
Solution Approach 1:
The patent segments the HARQ-ACK codebook into semi-static and dynamic parts. The semi-static codebook is configured through higher layer signaling and remains relatively fixed, while the dynamic codebook is adjusted based on actual grant-free transmission conditions. This segmentation reduces management complexity by separating configuration from real-time adjustments.
Solution Approach 2:
The patent performs preliminary configuration of the semi-static HARQ-ACK codebook through higher layer signaling before actual grant-free transmission occurs. This preliminary action establishes a baseline codebook structure that simplifies subsequent dynamic adjustments during runtime, reducing the complexity of real-time codebook management.
2Reliability
If semi-static and dynamic HARQ-ACK codebooks are configured, then data transmission reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent divides HARQ-ACK codebook configuration into semi-static (configured once or rarely) and dynamic (adjusted per transmission) components. This segmentation reduces signaling overhead by avoiding repeated transmission of stable configuration information while maintaining reliability through appropriate dynamic adjustments when needed.
Solution Approach 2:
The patent changes the configuration parameters of the HARQ-ACK codebook dynamically based on transmission conditions. Instead of using fixed parameters for all scenarios, the system adjusts codebook parameters adaptively, reducing signaling overhead by only transmitting parameter changes rather than complete reconfigurations.
3Adaptability or versatility
If grant-free transmission is used for various services, then service diversity is improved, but resource allocation complexity increases
Solution Approach 1:
The patent creates a universal HARQ-ACK codebook framework that can serve multiple different services and transmission scenarios through grant-free operation. This multi-functional approach allows the same basic mechanism to handle diverse services, reducing resource allocation complexity compared to service-specific configurations.
Solution Approach 2:
The patent introduces dynamic adjustment capabilities to the HARQ-ACK codebook, allowing resource allocation parameters to be flexibly modified based on service requirements and channel conditions. This dynamic approach enables diverse service support while managing complexity through adaptive rather than static resource allocation.
Data Source
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AI summary
A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) is provided. The communication method includes intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. This disclosure provides a grant-free-based data transmission method and apparatus.