Reserved HARQ-ACK Resource Elements for CSI Part 1 Decoding
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Solution Overview
Problem
In the context of 5G wireless communication systems, existing technologies face challenges in efficiently managing reserved resource elements for Hybrid Automatic Repeat Request (HARQ) feedback, particularly when HARQ-ACK bits are limited, leading to potential puncturing of critical control information like CSI part 1, which affects decoding performance.
Innovation Solution
The implementation of reserved HARQ-ACK resource element mapping patterns and calculations to ensure robust decoding of CSI part 1, involving specific patterns and parameters for HARQ-ACK bits, such as one or two bits, to avoid puncturing and optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reserved resource elements are allocated for HARQ-ACK bits, then decoding performance of CSI part 1 is improved, but resource allocation efficiency deteriorates due to potential puncturing when HARQ-ACK bits are limited
Solution Approach 1:
The patent segments the resource elements into different types: reserved REs for HARQ-ACK bits and non-reserved REs for other control information. This segmentation allows HARQ-ACK bits to be mapped to specific reserved resource elements while preventing puncturing of CSI part 1, thereby improving decoding performance without completely sacrificing resource allocation efficiency.
Solution Approach 2:
The patent performs preliminary allocation of reserved resource elements for HARQ-ACK bits before mapping other control information. By pre-reserving specific REs for HARQ-ACK purposes and establishing mapping patterns in advance, the system ensures that CSI part 1 is not punctured while maintaining efficient resource utilization through predetermined allocation strategies.
2Reliability
If dedicated resource elements are reserved for HARQ-ACK, then interference with CSI part 1 is prevented, but spectrum efficiency deteriorates due to reduced available resources
Solution Approach 1:
The patent changes the parameter of resource element allocation by introducing a reserved RE pattern that specifically designates certain REs for HARQ-ACK bits. This parameter change ensures that CSI part 1 mapping does not overlap with HARQ-ACK resources, preventing interference while optimizing spectrum efficiency through structured resource division rather than random allocation.
3Productivity
If resource elements are allocated for both HARQ-ACK and CSI part 1, then resource utilization is improved, but decoding performance deteriorates due to potential puncturing
Solution Approach 1:
The patent introduces reserved resource elements as an intermediary layer between HARQ-ACK bits and CSI part 1. These reserved REs act as a buffer or mediator that separates the two types of control information, allowing both to coexist in the same transmission without puncturing issues, thereby maintaining both resource utilization and decoding performance.
Data Source
AI summary
Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for transmitting uplink control information in new radio (NR) applications. Various embodiments describe how to calculate a number of reserved HARQ-ACK resource elements. Other embodiments may be described and claimed.