PUSCH HARQ-ACK Multiplexing Using β Offset Bit Allocation
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Solution Overview
Problem
In wireless communication systems, particularly in NR Rel-17, the multiplexing of Uplink Control Information (UCI) with different priorities results in high-priority UCI being dropped when collisions occur, leading to inefficiencies and resource waste.
Innovation Solution
A method for determining offset values and bit sequences to optimize the multiplexing of high-priority and low-priority HARQ-ACKs on a PUSCH, using varying conditions and β offset values to ensure efficient resource utilization and reduce implementation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If different priorities of UCI are multiplexed onto the same PUSCH, then resource utilization is improved, but implementation complexity increases due to ambiguity in determining bit sequence length
Solution Approach 1:
The patent changes the parameter of bit sequence length determination from ambiguous multiple possibilities to a single determined value by selecting a specific β offset value from multiple candidate values based on the number of HARQ-ACK bits. This resolves the implementation complexity while maintaining the resource utilization benefit of multiplexing different priority UCIs on the same PUSCH.
2Measurement precision
If multiple candidate β offset values are used for different HARQ-ACK bit lengths, then transmission accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies different β offset values locally based on the specific number of HARQ-ACK bits that need to be multiplexed. By selecting the appropriate β offset value from candidate values according to the actual bit length requirement, the system achieves accurate transmission resource allocation without maintaining all possible candidate values simultaneously, thus reducing overall device complexity while preserving transmission accuracy.
Data Source
AI summary
Discloses a method and a device in a node for wireless communications. The node receives a first information block, the first information block being used to determine a first offset value; and determines a first bit block and transmits a target PUSCH, where a target bit sequence is used for generating the target PUSCH, and the first bit block is used for generating a first bit sequence, the first bit sequence belonging to the target bit sequence, and the first offset value is used to determine a number of bits comprised in the first bit sequence; when a target condition is satisfied, the number of HARQ-ACK bit(s) comprised in the first bit block is used to determine whether the first reference bit block comprises a bit other than the first bit block. The present application can enhance the resource utilization ratio of HARQ multiplexing.