PUSCH Repetition Power Control Across Multiple SRS Resource Sets
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Solution Overview
Problem
The challenge of enhancing open-loop power control for PUSCH transmission with repetitions, particularly in scenarios involving multiple SRS resource sets, is not adequately addressed in existing wireless communication technologies.
Innovation Solution
A method and apparatus for PUSCH transmission with repetitions, involving the use of DCI to schedule multiple repetitions with distinct SRS resource sets and mapping patterns, along with specific determination of P0 values based on configuration information and open-loop power control parameter sets, to enhance reliability and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple SRS resource sets are used for PUSCH repetitions to improve reliability, then the reliability and robustness of uplink transmission is improved, but the complexity of power control parameter management increases
Solution Approach 1:
The patent segments the power control parameter management by associating each SRS resource set with its own dedicated P0-PUSCH-Set list. This allows independent configuration and management of power control parameters for each SRS resource set, reducing the complexity of managing multiple power control parameter sets while maintaining reliability improvements from multiple SRS resource sets
Solution Approach 2:
The patent introduces an intermediary mapping relationship between SRI fields and P0-PUSCH-Set-ID values. The SRI field in DCI indirectly indicates the appropriate P0 value through this mapping, rather than directly specifying power control parameters. This intermediary mechanism simplifies the power control parameter management complexity while enabling reliable multi-SRS resource set operation
2Adaptability or versatility
If two SRI fields are included in DCI to indicate different SRS resources for repetitions, then the adaptability of the system is improved, but the complexity of determining P0 values increases
Solution Approach 1:
The patent establishes preliminary mapping relationships between SRI field values and P0-PUSCH-Set-ID values before actual PUSCH transmission occurs. These mapping configurations are pre-defined in the system, allowing the UE to quickly determine the appropriate P0 value based on the SRI field indication without complex real-time calculations, thus maintaining adaptability while reducing determination complexity
Solution Approach 2:
The patent changes the parameter representation by using P0-PUSCH-Set-ID values as intermediaries rather than directly managing multiple P0 values. This parameter transformation simplifies the determination process: the SRI field indicates a P0-PUSCH-Set-ID, which then maps to the specific P0 value, reducing the complexity of handling multiple power control parameters while maintaining full adaptability
Data Source
AI summary
Embodiments of the present application are related to a method and apparatus for PUSCH transmission with repetitions. An exemplary method includes: receiving DCI scheduling a plurality of repetitions of a PUSCH transmission, wherein there is at least one open-loop power control parameter set indication in the DCI; receiving configuration information associated with the PUSCH transmission, indicating: a first and a second SRS resource sets, a mapping pattern, and at least one list of P0-PUSCH-Set, wherein a first part of the plurality of repetitions is associated with the first SRS resource set and a second part of the plurality of repetitions is associated with the second SRS resource set according to the mapping pattern: and transmitting the first part and second part of the plurality of repetitions according to a first P0 value and a second P0 value respectively determined based on the received DCI and configuration information.