Uplink Control Bit Ordering for Reliable HARQ on Shared PUSCH
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Solution Overview
Problem
In resource-constrained scenarios, multiplexing HARQ feedback information and second information on a same PUSCH transmission resource poses a challenge, necessitating improved methods to enhance the probability of complete transmission of HARQ feedback information for reliable uplink control in XR services.
Innovation Solution
Positioning the HARQ feedback information bit sequence ahead of the second information bit sequence in the UCI, with specific priority indications to ensure preferential mapping on limited resources, thereby increasing the probability of complete transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HARQ feedback information and second information are multiplexed on the same PUSCH transmission resource, then resource utilization is improved, but the probability of complete transmission of HARQ feedback information decreases
Solution Approach 1:
The patent segments the UCI bit sequence into multiple parts: a first bit sequence corresponding to HARQ feedback information and a second bit sequence corresponding to second information. By positioning the first bit sequence ahead of the second bit sequence in the multiplexed transmission, the patent ensures that HARQ feedback information occupies the most reliable transmission resources, thereby maintaining high probability of complete transmission while still achieving resource utilization improvement through multiplexing.
2Productivity
If second information is transmitted to indicate unused CG PUSCH resources, then resource allocation efficiency is improved, but transmission reliability of control information deteriorates
Solution Approach 1:
The patent applies preliminary action by positioning the HARQ feedback information bit sequence ahead of the second information bit sequence before transmission. This pre-arranged positioning ensures that when multiplexing occurs on the same PUSCH resource, the HARQ feedback information (which is more critical for transmission reliability) is mapped to more reliable resource elements first, thereby maintaining control information reliability while still enabling efficient resource allocation through the second information.
Data Source
AI summary
A method for generating uplink control information UCI includes: A terminal generates a first UCI bit sequence, where the first UCI bit sequence includes a first bit sequence and a second bit sequence; the first bit sequence corresponds to first information, and 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 physical uplink shared channel PUSCH resource used or unused in a configured grant CG period; and the first bit sequence is prior to the second bit sequence, a length of the first bit sequence is greater than or equal to 1, and a length of the second bit sequence is greater than or equal to 1. The terminal outputs the first UCI bit sequence. A terminal is configured to perform the method.