Mini-Slot PUSCH Transport Block Size Calculation
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Solution Overview
Problem
Current wireless communication systems face limitations in communication flexibility and efficiency, particularly in the configuration of user equipment (UE) and base stations for mini-slot physical uplink shared channel (PUSCH) operations, which affect the overall capacity, speed, and reliability of wireless communication.
Innovation Solution
The implementation of user equipment and base station apparatuses with receiving and transmission circuitry configured to calculate and transmit transport block sizes (TBS) for the PUSCH based on resource elements (REs) for demodulation reference signals (DMRS), additional DMRS, and DMRS added after a slot boundary, enhancing resource allocation and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource allocation for mini-slot PUSCH is optimized by calculating TBS based on DMRS REs, then communication efficiency and flexibility improve, but calculation complexity and device complexity increase
Solution Approach 1:
The patent changes the parameters used for TBS calculation from traditional slot-based resource allocation to mini-slot-based resource allocation. Specifically, it calculates TBS based on the number of resource elements for DMRS, additional DMRS, and DMRS added after slot boundary, rather than using fixed slot structures. This parameter change enables more flexible and efficient resource utilization while managing calculation complexity through standardized formulas.
2Reliability
If mini-slot PUSCH operations are implemented with repeated transmissions, then reliability improves, but latency increases
Solution Approach 1:
The patent segments the PUSCH transmission into multiple mini-slots with repeated transmissions. Instead of using a single long slot, the transmission is divided into shorter mini-slots that can be repeated. This segmentation allows the system to achieve reliability through repetition while reducing the time loss by using shorter, more agile transmission units that can be quickly retransmitted if needed.
Solution Approach 2:
The patent introduces dynamic resource allocation for mini-slot PUSCH transmissions. The number of repetitions, resource element allocation, and DMRS positioning can be dynamically adjusted based on channel conditions and traffic requirements. This dynamic approach allows the system to optimize between reliability and latency by adapting the transmission parameters in real-time rather than using fixed configurations.
Data Source
AI summary
A user equipment (UE) is described. The UE includes receiving circuitry configured to receive resource allocation information of a physical uplink shared channel (PUSCH) and a number of repetitions for the PUSCH. The UE also includes control circuitry configured to calculate a transport block size (TBS) for the PUSCH. The UE further includes transmission circuitry configured to transmit the PUSCH. The TBS is calculated based on a number of resource elements (REs) for a demodulation reference signal (DMRS), REs for additional DMRS, and REs for a DMRS added right after a slot boundary for a repetition of the PUSCH.