Multi-Slot PUSCH Transport Block Size Determination
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Solution Overview
Problem
In 3GPP Releases 15 and 16, the transport block size (TBS) specified for the physical uplink shared channel (PUSCH) is based on a single slot, which may not be efficient for multi-slot allocations, leading to suboptimal performance in coverage extension.
Innovation Solution
A terminal and radio communication method that allocates the physical uplink shared channel across multiple slots, determining the transport block size and division based on configuration information, and applying appropriate modulation and encoding schemes to enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the transport block size (TBS) specified for single slot is applied to multi-slot PUSCH, then the specification is simple and easy to implement, but the resource allocation efficiency deteriorates
Solution Approach 1:
The patent introduces dynamic TBS determination for multi-slot PUSCH allocations. The transport block size is no longer fixed based on single-slot specifications but is dynamically adjusted according to the number of slots allocated. This allows the system to optimize resource allocation efficiency while maintaining implementation feasibility through standardized procedures.
Solution Approach 2:
The patent changes the TBS parameter calculation method for multi-slot allocations. Instead of applying single-slot TBS directly, the system calculates TBS based on the total number of resource elements across multiple slots, modifying the parameter to reflect the extended time resources and improve overall allocation efficiency.
2Productivity
If the transport block size (TBS) is optimized for multi-slot allocation, then the resource allocation efficiency is improved, but the complexity of determination increases
Solution Approach 1:
The patent segments the TBS determination process into distinct steps: first calculating the total number of resource elements across all allocated slots, then applying the TBS calculation formula with this aggregated value. This segmentation simplifies the overall complexity by breaking down the multi-slot TBS determination into manageable, systematic operations.
Solution Approach 2:
The system performs self-service through standardized TBS determination procedures that automatically adapt to multi-slot allocations. The terminal and network equipment follow predefined rules and formulas that self-adjust based on the number of slots allocated, reducing the need for complex external coordination while maintaining efficiency.
3Reliability
If code blocks are divided and transmitted across multiple slots, then the coverage extension is improved, but the processing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the transport block into multiple code blocks that can be independently processed and transmitted across different slots. This segmentation enables coverage extension through repeated transmissions while maintaining manageable processing complexity through systematic division of the data stream.
Solution Approach 2:
The patent performs preliminary actions by dividing the transport block into code blocks and preparing them for multi-slot transmission in advance. This preliminary segmentation and preparation work is done before actual transmission, allowing the system to handle coverage extension requirements systematically without increasing real-time processing complexity.
Data Source
AI summary
A terminal allocates a physical uplink shared channel across multiple slots and transmits the data series via the physical uplink shared channel. The terminal performs rate matching for each data series transmitted in a specific time region.