Mini-slot PUSCH Redundancy Version Determination
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Solution Overview
Problem
Current wireless communication systems face limitations in flexibility and efficiency, particularly in managing mini-slot physical uplink shared channel (PUSCH) transmissions across slot boundaries or downlink/uplink switching points, which affects communication capacity, speed, and reliability.
Innovation Solution
The implementation of a user equipment (UE) and base station apparatus that receive and transmit Radio Resource Control (RRC) messages indicating redundancy version (RV) sequences for configured grant (CG) PUSCH transmissions, allowing for repetition splitting across slot boundaries or switching points, with RV determination for each actual transmission occasion based on the received sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mini-slot PUSCH transmissions are repeated across slot boundaries or downlink/uplink switching points, then communication reliability is improved, but transmission complexity and resource management difficulty increase
Solution Approach 1:
The patent segments the mini-slot PUSCH transmission into multiple repetitions that can be independently managed. Each repetition is assigned a specific redundancy version from a configured sequence, allowing the transmission to be divided into manageable units that can cross slot boundaries or switching points without increasing overall system complexity.
Solution Approach 2:
The base station pre-configures the UE with redundancy version sequences via RRC signaling before actual transmissions occur. This preliminary configuration establishes the RV sequence and repetition parameters in advance, simplifying the real-time transmission process by eliminating the need for dynamic RV selection during actual PUSCH repetitions.
2Adaptability or versatility
If redundancy version sequences are configured for multiple CG PUSCH transmissions, then transmission flexibility is improved, but signaling overhead and configuration complexity increase
Solution Approach 1:
The patent implements a universal RRC configuration mechanism that can handle multiple CG PUSCH transmission configurations through a standardized parameter structure. The same RRC message format and parameter set (including rvSequence, repK, startSymbolAndLength) can be reused across different CG PUSCH configurations, providing flexibility while maintaining consistent configuration complexity.
Solution Approach 2:
The patent uses parameter-based configuration where different CG PUSCH transmissions are differentiated by specific parameters within the RRC message (such as configurationIndex, rvSequence, and repK). By changing these parameters rather than creating entirely different configuration structures, the system achieves transmission flexibility without proportionally increasing configuration complexity.
3Productivity
If repetitions are split across slot boundaries or switching points, then communication efficiency is improved, but resource management complexity increases
Solution Approach 1:
The patent enables dynamic repetition splitting where mini-slot PUSCH repetitions can flexibly cross slot boundaries or downlink/uplink switching points based on resource availability. The repetition structure is not rigidly confined to slot boundaries, allowing transmissions to adapt to dynamic TDD configurations and improve resource utilization efficiency.
Solution Approach 2:
The UE autonomously determines how to handle repetition splitting across slot boundaries or switching points based on the pre-configured parameters from RRC signaling. The UE independently manages the repetition transmission without requiring real-time network coordination for each split scenario, reducing resource management complexity while maintaining communication efficiency.
Data Source
AI summary
A user equipment (UE) is described. The UE includes receiving circuitry configured to receive resource allocation information of a mini-slot physical uplink shared channel (PUSCH) and a number of repetitions for the PUSCH. The UE also includes control circuitry configured to determine a redundancy version (RV) for the number of repetitions. The UE further includes transmission circuitry configured to transmit the number of repetitions for the PUSCH based on the determined RV.