Priority-Based UCI Multiplexing on PUSCH for Wireless Uplink
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently performing wireless signal transmission and reception, particularly in handling uplink control information (UCI) with different priorities, such as Configured Grant (CG)-UCI and Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK), which require efficient multiplexing and resource allocation.
Innovation Solution
A method and apparatus for encoding and multiplexing UCI on a physical uplink channel, where CG-UCI and HARQ-ACK are assigned different priorities, with resource allocation determined based on priority, and joint encoding is avoided, allowing for efficient resource mapping and decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple UCIs with different priorities are multiplexed on one physical uplink channel, then the efficiency of wireless signal transmission is improved, but the complexity of resource allocation and decoding increases
Solution Approach 1:
The patent segments the UCI into different types (first-type UCI and second-type UCI) with different priorities and applies different encoding methods to each segment. The first-type UCI uses first encoding while the second-type UCI uses second encoding, allowing differentiated resource allocation and simplifying the decoding process by handling each segment separately according to its priority level.
Solution Approach 2:
The patent applies different encoding qualities and resource allocation strategies to different parts of the UCI based on their priority. High-priority UCIs receive preferential resource allocation and specific encoding treatment, while lower-priority UCIs receive adjusted resource allocation, creating localized optimization without requiring complete system redesign.
2Reliability
If different encoding methods are applied to UCIs with different priorities, then the reliability of critical control information is improved, but the complexity of joint encoding and decoding increases
Solution Approach 1:
The patent divides the UCI into segments based on priority and applies different encoding methods to each segment rather than using a single joint encoding approach. This segmentation allows critical first-type UCI to use more robust encoding while second-type UCI uses lighter encoding, improving reliability without requiring complex joint decoding algorithms.
Solution Approach 2:
Instead of applying a unified encoding approach and then differentiating through post-processing, the patent inverts the approach by applying different encoding methods from the beginning based on priority levels. This inversion simplifies the overall encoding/decoding process while ensuring critical information receives appropriate encoding treatment.
3Productivity
If resource mapping is performed based on priority levels, then the efficiency of resource utilization is improved, but the complexity of determining resource allocation rules increases
Solution Approach 1:
The patent segments the resource mapping process by first determining the resource mapping for the first-type UCI based on its priority, then determining the resource mapping for the second-type UCI based on remaining resources. This sequential segmentation simplifies the overall resource allocation rules compared to simultaneous multi-priority mapping.
Solution Approach 2:
The patent applies preliminary action by first allocating resources to the first-type UCI (higher priority) before allocating remaining resources to the second-type UCI. This preliminary resource assignment to critical information simplifies the overall resource mapping strategy by establishing a clear priority-based framework before handling lower-priority allocations.
Data Source
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AI summary
A UE according to an embodiment of the present disclosure may receive information about a plurality of beta offset values for determining the number of REs for UCI to be transmitted on a PUSCH, receive DCI scheduling a first PUSCH, and transmit a first HARQ-ACK on the first PUSCH, and transmit the first PUSCH. The plurality of beta offset values may include first beta offset values for a case where the priority of the first HARQ-ACK is identical to the priority of the first PUSCH, and second beta offset values for a case where the priority of the first HARQ-ACK is different from the priority of the first PUSCH.