PUSCH Uplink Control Mapping for Reliable HARQ Feedback
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Solution Overview
Problem
In extended reality (XR) services with dynamic uplink data amounts, multiplexing HARQ feedback information and second information on limited PUSCH resources leads to a low probability of complete transmission, affecting service reliability.
Innovation Solution
A method for mapping and sending uplink control information, where HARQ feedback information is transmitted on a first resource determined by the number of bits in a second bit sequence, optimizing resource allocation to enhance the probability of complete transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HARQ feedback information and second information are multiplexed on limited PUSCH transmission resources, then resource utilization is improved, but the probability of complete transmission of HARQ feedback information decreases
Solution Approach 1:
The PUSCH transmission resources are segmented into multiple resources (first resource, second resource, third resource, etc.). HARQ feedback information is mapped to specific resources (first resource and/or second resource) while second information is mapped to other resources (third resource and/or fourth resource). This segmentation allows both types of information to be transmitted simultaneously on the same PUSCH without competing for the same resources, thereby maintaining high resource utilization while ensuring reliable HARQ feedback transmission.
2Productivity
If multiple types of uplink control information are transmitted on the same PUSCH resource, then resource efficiency is improved, but transmission reliability of critical information deteriorates
Solution Approach 1:
The PUSCH resources are divided into multiple segments (first resource, second resource, third resource, fourth resource). Critical HARQ feedback information is allocated to specific segments (first resource and/or second resource) while non-critical second information is allocated to other segments (third resource and/or fourth resource). This segmentation strategy enables efficient multiplexing of multiple control information types while protecting the reliability of critical HARQ feedback through dedicated resource allocation.
3Productivity
If the number of resources for HARQ feedback information is reduced to accommodate second information, then resource utilization is improved, but the completeness of HARQ feedback transmission is compromised
Solution Approach 1:
The system segments PUSCH resources into multiple independent resources. The first resource and/or second resource are allocated for HARQ feedback information, while the third resource and/or fourth resource are allocated for second information. This segmentation allows the system to accommodate both types of information without reducing the resources dedicated to HARQ feedback, thereby maintaining both high resource utilization and complete HARQ feedback transmission.
Solution Approach 2:
The solution transitions from a one-dimensional resource allocation (single PUSCH resource shared by all control information) to a multi-dimensional allocation (multiple resources within the same PUSCH). By adding the dimension of resource differentiation, the system can simultaneously accommodate HARQ feedback information and second information with appropriate resource allocations, achieving both improved resource utilization and maintained transmission completeness.
Data Source
AI summary
An uplink control information mapping and sending method and a communication apparatus are provided. The uplink control information mapping and sending method includes: A terminal generates a first bit sequence and a second bit sequence, where the first bit sequence corresponds to first information, the first information is hybrid automatic repeat request HARQ feedback information, the second bit sequence corresponds to second information, and the second information indicates a configured grant CG resource used or unused in a CG periodicity time period. The terminal sends the first information by using a first resource of a physical uplink shared channel PUSCH, where a number of first resources is related to a number of bits included in the second bit sequence.