HARQ Process Segmentation for Multiple PUSCH Occasions
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Solution Overview
Problem
In wireless communication systems, particularly in 5G and beyond, the existing mechanism for determining HARQ processes in configured grant (CG) periods leads to transmission failures due to multiple PUSCH occasions sharing the same HARQ process identifier, especially in scenarios with variable data packet sizes and multiple PUSCH occasions, resulting in inefficient data transmission.
Innovation Solution
A method and apparatus for determining unique HARQ process identifiers for multiple PUSCHs within a CG period by using a new HARQ process calculation formula and parameters, ensuring distinct identifiers for each PUSCH occasion to prevent transmission failures and improve efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple PUSCH occasions share the same HARQ process identifier in configured grant periods, then resource utilization is improved, but transmission reliability deteriorates due to transmission failures
Solution Approach 1:
The patent segments the HARQ process identifiers by introducing a first identifier for PUSCH occasions in configured grant periods and a second identifier for PUSCH occasions in dynamic grant periods. This segmentation ensures that different PUSCH occasions have distinct identifiers, preventing transmission failures while maintaining efficient resource utilization across multiple occasions.
2Reliability
If a new HARQ process calculation formula is introduced to ensure unique identifiers, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent changes the parameters used in HARQ process identifier calculation by introducing different identifier types (first identifier for CG periods, second identifier for DG periods) based on the grant type. This parameter change ensures unique identifiers without requiring complex calculations, as the identifiers are derived from straightforward timing relationships between PUSCH occasions and grant types.
3Productivity
If multiple CG and DG transmissions occur in the same period, then system capacity is improved, but identification accuracy deteriorates due to identifier conflicts
Solution Approach 1:
The patent segments the identification space by using different identifier sets for configured grant periods and dynamic grant periods. The first identifier is based on timing within CG periods, while the second identifier is based on timing within DG periods. This segmentation allows multiple CG and DG transmissions to coexist in the same overall period without identifier conflicts, maintaining accurate identification for all transmission types.
Data Source
AI summary
A method for processing HARQ processes, a terminal device, and a chip. In the method, at least one HARQ process of at least one PUSCH among multiple PUSCHs is determined.