Priority-Based HARQ-ACK Multiplexing Across PUSCH Resource Elements
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently multiplexing control or data information with different priority values in physical uplink shared channels (PUSCH) and physical uplink control channels (PUCCH), which can lead to inefficiencies and potential data loss.
Innovation Solution
A method and apparatus are provided to determine a maximum number of resource elements (REs) for multiplexing hybrid automatic repeat request acknowledgement (HARQ-ACK) information in PUSCH by scaling the total available REs based on priority values, ensuring that the HARQ-ACK information is multiplexed within the determined REs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HARQ-ACK information with different priority values is multiplexed in PUSCH without priority-based resource element scaling, then the multiplexing process is simple, but the data transmission reliability deteriorates and data loss risk increases
Solution Approach 1:
The patent applies parameter changes by introducing priority-based scaling factors that modify the number of resource elements allocated to HARQ-ACK information based on its priority value. Different scaling factors (first scaling factor for first priority, second scaling factor for second priority) dynamically adjust resource allocation parameters to ensure reliable transmission of high-priority data while maintaining system efficiency.
2Reliability
If the number of resource elements for HARQ-ACK multiplexing is increased to ensure reliability, then data transmission reliability improves, but the efficiency of resource utilization deteriorates
Solution Approach 1:
The patent applies local quality by differentiating resource element allocation based on the local characteristics of different HARQ-ACK information types. High-priority HARQ-ACK information receives a larger allocation of resource elements with higher scaling factors, while lower-priority information receives fewer resource elements, ensuring that critical data gets adequate resources without wasting them on less critical data.
Solution Approach 2:
The patent uses parameter changes through priority-based scaling factors that dynamically adjust the number of resource elements. The scaling factors are parameters that change based on priority levels, allowing the system to optimize the balance between reliability and efficiency by allocating more resources to high-priority data and fewer resources to low-priority data.
3Productivity
If priority-based scaling factors are applied to determine maximum number of resource elements, then resource allocation optimization improves, but the complexity of determining and managing scaling factors increases
Solution Approach 1:
The patent applies parameter changes by defining specific scaling factors associated with different priority values. The first scaling factor corresponds to first priority HARQ-ACK information and the second scaling factor corresponds to second priority information. These pre-defined parameters simplify the complexity by providing clear, deterministic rules for resource element calculation based on priority levels.
Data Source
AI summary
Methods and apparatuses for multiplexing information with different priority values. A method for operating a user equipment (UE) includes determining a maximum number of resource elements (REs) of a physical uplink shared channel (PUSCH) for multiplexing first hybrid automatic repeat request acknowledgement (HARQ-ACK) information. The maximum number of REs is determined by scaling, with a factor, a total number of REs available for multiplexing the first HARQ-ACK information in the PUSCH. The PUSCH has a first priority value. The factor has a first value when the first HARQ-ACK information has the first priority value. The factor has a second value when the first HARQ-ACK information has a second priority value. The method further includes multiplexing the first HARQ-ACK information in the PUSCH over a number of REs that is smaller than or equal to the maximum number of REs and transmitting the PUSCH.