UE Assistance Information for DWS of Multipusch Configuration
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Solution Overview
Problem
Current scheduling methods for multiple transport blocks or physical uplink shared channel signaling on multiple serving cells face challenges in efficiently managing power amplifier resources, leading to suboptimal waveform switching and reduced coverage due to non-monotonic power sweeping and shared power amplifier limitations.
Innovation Solution
The proposed solution involves receiving assistance information on power amplifier characteristics from user equipment (UE) to configure uplink transmission resources and transmit a waveform switching configuration, allowing for dynamic switching between DFT-s-OFDM and CP-OFDM, and potentially rescheduling or using different power amplifiers to maintain monotonic power sweep and enhance coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic waveform switching is implemented for multiple uplink transmissions to multiple cells, then coverage enhancement is achieved, but power amplifier resource management becomes complex and monotonic power sweep is violated
Solution Approach 1:
The network node receives assistance information about power amplifier characteristics from the UE in advance, enabling pre-planning of waveform switching configurations that maintain monotonic power sweep while enhancing coverage for multiple uplink transmissions to multiple cells
Solution Approach 2:
The system dynamically switches between DFT-s-OFDM and CP-OFDM waveforms based on power amplifier characteristics and transmission requirements, changing operational parameters to maintain monotonic power sweep while improving coverage
2Adaptability or versatility
If waveform switching is performed without considering power amplifier characteristics, then scheduling flexibility is improved, but power amplifier efficiency deteriorates and coverage enhancement is reduced
Solution Approach 1:
The network node utilizes feedback assistance information regarding power amplifier characteristics to adjust waveform switching decisions, ensuring that scheduling flexibility is maintained while power amplifier efficiency and coverage enhancement are optimized
Solution Approach 2:
The system applies different waveform switching strategies to different uplink transmissions based on their specific power amplifier characteristics and coverage requirements, optimizing each transmission locally rather than applying a uniform approach
Data Source
AI summary
An apparatus configured to: receive, from a user equipment, assistance information on power amplifier characteristics of the user equipment, wherein the user equipment is configured to perform multiple uplink transmissions to multiple cells; configure at least one uplink transmission resource, based on the assistance information, for at least one uplink transmission of the multiple uplink transmissions; and transmit, to the user equipment, an indication of a waveform switching configuration related to the at least one uplink transmission resource.