PUSCH HARQ-ACK Multiplexing with Priority-Based RE Scaling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently multiplexing control and 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 interference.
Innovation Solution
A method and apparatus for determining a maximum number of resource elements (REs) for multiplexing hybrid automatic repeat request acknowledgement (HARQ-ACK) information in PUSCH by scaling with a factor based on priority values, allowing for efficient multiplexing and de-multiplexing of HARQ-ACK information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HARQ-ACK information with different priority values is multiplexed in PUSCH without priority-based scaling, then the multiplexing process is simple, but the resource allocation efficiency deteriorates and interference increases
Solution Approach 1:
The patent applies parameter changes by introducing priority-based scaling factors (first scaling factor for first priority value, second scaling factor for second priority value) that modify the number of resource elements allocated to different priority levels of HARQ-ACK information. This enables efficient resource allocation according to priority while maintaining manageable complexity through standardized scaling mechanisms.
2Reliability
If priority-based scaling of resource elements is implemented, then resource allocation efficiency improves, but the complexity of determining and applying scaling factors increases
Solution Approach 1:
The patent applies preliminary action by pre-defining multiple scaling factors corresponding to different priority values before the actual multiplexing operation. The scaling factors are determined in advance based on priority indicators, allowing the multiplexing process to directly apply appropriate scaling without complex real-time calculations, thus improving reliability while managing complexity.
3Object-affected harmful factors
If the number of resource elements for multiplexing is reduced based on priority, then interference between different priority information decreases, but the capacity to transmit HARQ-ACK information decreases
Solution Approach 1:
The patent applies dynamics by making the number of resource elements dynamic rather than fixed. The actual number of resource elements allocated to HARQ-ACK information varies based on the priority values present in the multiplexed data, allowing the system to adaptively balance between reducing interference for higher priority levels and maintaining sufficient capacity for lower 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.