PUSCH Power Control Via SRI Association for Flexible Beam Updates
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Solution Overview
Problem
The existing mechanism for determining uplink transmission parameters in new radio (NR) technology is not perfect, particularly in high frequency bands where beam pairs between a base station and a terminal vary with time and position, leading to inefficiencies and increased signaling overhead.
Innovation Solution
A method for determining uplink transmission parameters, including spatial relation and power control parameters, is implemented using Medium Access Control (MAC) CE signaling, where a CC group and transmitting parameters are determined based on MAC CE, and power control parameters are adjusted according to association information between an SRI and PUSCH power control parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam pairs are updated frequently to adapt to time and position variations, then communication reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent segments the beam management process by separating spatial relation information and power control parameter information into distinct MAC CE signaling structures. This allows selective updating of only the necessary parameters rather than transmitting complete beam configuration sets, thereby maintaining communication reliability while reducing signaling overhead.
Solution Approach 2:
The patent implements preliminary action by pre-configuring spatial relation information and power control parameters through MAC CE signaling before uplink transmission occurs. This allows the terminal to have beam parameters ready in advance, enabling quick adaptation to beam pair variations without requiring extensive real-time signaling, thus improving reliability while controlling overhead.
2Adaptability or versatility
If MAC CE signaling is used to update transmitting parameters, then flexibility in beam updating is improved, but the mechanism becomes imperfect and inefficient
Solution Approach 1:
The patent applies local quality by providing different MAC CE signaling formats for different parameter types (spatial relation information vs. power control parameters). Each parameter type receives optimized signaling treatment according to its specific requirements, improving overall system flexibility and efficiency without compromising the ability to update parameters adaptively.
3Measurement precision
If separate configuration is used for each CC or BWP, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent merges pathloss measurement configurations by allowing multiple CCs or BWPs to share common pathloss measurement parameter pools. This reduces configuration complexity by eliminating redundant separate configurations while maintaining measurement precision through shared reference signals and measurement resources across multiple carriers or bandwidth parts.
Data Source
AI summary
Provided are a transmitting parameter determination method, an electronic device, an apparatus and a medium. The transmitting parameter determination method includes: determining a power control parameter of physical uplink shared channel (PUSCH) transmission according to association information between a sounding reference signal resource indicator (SRI) and a PUSCH power control parameter. The power control parameter of the PUSCH transmission includes at least one of an open-loop power control parameter of a PUSCH, a closed-loop power control parameter of a PUSCH, or a pathloss measurement parameter of a PUSCH.