Uplink Resource Pool Prioritization for HARQ-ACK Multiplexing
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Solution Overview
Problem
In 5G NR systems, there is a challenge in processing the multiplexing of HARQ-ACK feedback with other information such as Transport Block (TB) and Channel State Information (CSI) reports, particularly in scenarios where PUCCH and PUSCH resources overlap, leading to potential decoding errors and performance issues.
Innovation Solution
A method is introduced where a first signaling determines a radio resource pool, and based on time domain overlap, a bit block indicating a status is either dropped or transmitted in a specific radio resource pool, optimizing UCI multiplexing by balancing delay and reliability, and ensuring correct decoding of bit blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HARQ-ACK feedback is multiplexed with Transport Block and CSI report in overlapping PUCCH and PUSCH resources, then information transmission efficiency is improved, but decoding errors and communication reliability deteriorate
Solution Approach 1:
The patent segments the uplink transmission resources by dividing PUCCH and PUSCH resources into distinct resource pools with different priorities. High-priority resources (PUCCH for HARQ-ACK) and low-priority resources (PUSCH for data) are separated into different resource pools, allowing the system to selectively transmit or drop low-priority transmissions when resources overlap, thereby maintaining high-priority communication reliability while enabling multiplexing when resources are available.
2Reliability
If HARQ-ACK feedback is transmitted in dedicated PUCCH resources, then communication reliability is improved, but resource utilization and transmission flexibility worsen
Solution Approach 1:
The patent introduces dynamic resource pool prioritization where the system can flexibly adjust transmission behavior based on real-time conditions. When PUCCH and PUSCH resources do not overlap, HARQ-ACK is transmitted in dedicated PUCCH resources for reliability. When resources overlap, the system dynamically decides to drop PUSCH transmission to preserve PUCCH transmission, or multiplex them when capacity permits, thus adapting transmission flexibility while maintaining reliability through priority-based resource management.
3Productivity
If PUCCH and PUSCH resources are allowed to overlap, then resource utilization efficiency is improved, but decoding accuracy and transmission quality worsen
Solution Approach 1:
The patent applies local quality by assigning different priority levels and transmission characteristics to different resource pools. High-priority PUCCH resources dedicated to HARQ-ACK feedback are protected with higher priority, while low-priority PUSCH resources carrying data or CSI reports can be dropped or multiplexed based on availability. This local differentiation of resource quality allows overlapping resources to be utilized efficiently while maintaining decoding accuracy for critical high-priority transmissions.
Data Source
AI summary
The present disclosure provides a method and a device in a node for wireless communications. A first receiver receives a first signaling; a first transmitter transmits a first bit block, or, drops transmitting a bit block indicating a first status; herein, the first signaling is used to determine a first radio resource pool; a first status is associated with the first signaling; a first-type radio resource pool is reserved for a first-type bit block; when the first radio resource pool and the first-type radio resource pool are non-overlapping in time domain, the first transmitter drops transmitting a bit block indicating the first status; when the first radio resource pool and a said first-type radio resource pool are overlapping in time domain, the first transmitter transmits the first bit block in the said first-type radio resource pool, the first bit block indicating the first status.