Dynamic Uplink Waveform Power Control in 5G NR Nodes
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Solution Overview
Problem
Current 5G New Radio (NR) systems face power control challenges in configuring dynamic uplink transmission waveforms, particularly in scenarios with dynamic changes or high-speed movements, leading to inefficiencies and increased hardware complexity and costs.
Innovation Solution
A method for wireless communications that involves receiving a DCI format and transmitting a PUSCH with a target waveform, where the DCI format includes fields determining the waveform, power control, and power values, allowing for dynamic power adjustments and waveform selection among candidate waveforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic waveform configuration is implemented for uplink transmission, then adaptability to different application scenarios is improved, but power control complexity and hardware complexity increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting power control parameters based on waveform type. Different power control formulas are applied for CP-OFDM and DFT-s-OFDM waveforms, with additional parameters introduced to handle dynamic waveform configuration. This allows the system to adapt to different application scenarios while managing power control complexity through structured parameter management.
2Adaptability or versatility
If dynamic waveform configuration is implemented, then system flexibility is improved, but hardware complexity and costs increase
Solution Approach 1:
The patent implements universality by designing a unified power control mechanism that handles multiple waveform types (CP-OFDM and DFT-s-OFDM) through a single framework. The power control formula incorporates waveform-type dependent parameters that can be dynamically configured, allowing one hardware platform to support multiple waveforms without requiring separate dedicated circuits for each waveform type, thereby reducing hardware complexity.
3Adaptability or versatility
If multiple candidate waveforms are supported, then adaptability to different scenarios is improved, but power control precision requirements increase
Solution Approach 1:
The patent addresses power control precision by introducing waveform-specific parameters (first parameter value for CP-OFDM, second parameter value for DFT-s-OFDM) that are dynamically adjusted based on the selected waveform. This allows precise power control for each waveform type while maintaining a unified control structure, enabling accurate power adjustment across multiple candidate waveforms without requiring separate precision mechanisms for each waveform.
Data Source
AI summary
The application provides a method and device in a node for wireless communications. A node receives a first information block and receives a first DCI format, the first information block is used to determine the first DCI format; the node transmits a first PUSCH, a waveform adopted by the first PUSCH is a target waveform, the target waveform is one of X1 candidate waveforms; the first DCI format at least comprises a first field and a second field, and a value of the first field is used to determine the target waveform; a target power value is equal to a transmission power value of the first PUSCH, and the target power value is equal to a smaller value between a first upper limit value or a first power value. The present application improves the transmission performance of uplink.