PUSCH Transport Block Sizing Across Mixed FD and HD Slots
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Solution Overview
Problem
Existing methods for determining the transport block size (TBS) for repeated physical uplink shared channel (PUSCH) transmissions in wireless communication systems fail to account for mixed slots of full duplex (FD) and half duplex (HD) types, leading to ambiguity and increased error probability.
Innovation Solution
A method for determining TBS in wireless communication systems by applying a scaling factor to the total number of resource elements allocated for PUSCH based on physical resource blocks (PRBs) in HD slots, considering both FD and HD slots during repeated transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TBS is determined based on PRBs allocated in mixed FD and HD slots for repeated PUSCH transmissions, then communication reliability is improved, but the complexity of TBS determination increases due to ambiguous methods for handling different slot types
Solution Approach 1:
The patent introduces a slot type indicator parameter to distinguish between FD and HD slots, and modifies the TBS determination process by applying different scaling factors based on slot type. This parameter-based differentiation resolves the ambiguity in handling mixed slot types while maintaining clear determination procedures.
Solution Approach 2:
The patent segments the TBS determination process into separate handling for FD slots and HD slots. By dividing the unified TBS determination into slot-type-specific procedures with appropriate scaling factors, it eliminates the complexity arising from mixed slot types while improving reliability through consistent handling.
2Device complexity
If conventional TBS determination methods are used for repeated PUSCH transmissions, then the determination process is simple, but errors occur when time-domain resources include mixed FD and HD slots
Solution Approach 1:
The patent modifies the conventional TBS determination by introducing slot type as a conditional parameter. When FD slots are detected in the repeated transmission resources, appropriate scaling factors are applied to adjust the TBS calculation, thereby preventing errors while maintaining procedural clarity.
Solution Approach 2:
The patent makes the TBS determination dynamic by adapting the calculation method based on the detected slot types in the time-domain resources. The system dynamically selects appropriate scaling factors and determination procedures based on whether FD or HD slots are present, ensuring accuracy without excessive complexity.
Data Source
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AI summary
Provided are an operating method of an apparatus in a wireless communication system, and an apparatus using the method. The method comprises determining a size of a transport block (TB) and transmitting the TB having the size from each slot of a plurality of slots on a physical uplink shared channel (PUSCH). Here, the plurality of slots comprises a full duplex (FD) slot capable of simultaneously performing an uplink operation and a downlink operation by using different frequency bands in a slot, and a half duplex (HD) slot capable of performing an uplink operation or a downlink operation in a slot, and the size is determined on the basis of a value obtained by applying a scaling factor to the "total number (NRE) of resource elements assigned for the PUSCH" determined on the basis of a physical resource block (PRB) transmitted from the HD slot.