Per-Panel Uplink Power Control for Multi-Panel 5G UE
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Solution Overview
Problem
Current power control schemes in 3GPP NR Rel-18 are inadequate for supporting multiple simultaneously active UE panels, particularly when the number of panels exceeds two, as they fail to effectively manage per-panel power control and full power operation.
Innovation Solution
The implementation of per-panel uplink power control, where each panel can operate independently with its own power control state and maximum output power, with the ability to configure multiple close loop power control states and pathloss reference signals, and report specific power information to the network, ensuring that total output power does not exceed the UE's maximum capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current power control schemes are used, then the system is simple to operate, but it cannot effectively manage per-panel power control when multiple panels are simultaneously active
Solution Approach 1:
The patent segments the power control configuration into per-panel basis by introducing panel-specific parameters including separate maximum output power values (Pcmax,f,c(i,l)), individual pathloss reference signals (PLb,f,c(qd)), and separate power control adjustment states (fb,f,c(i,l)) for each panel. This segmentation enables independent power control for each panel while maintaining overall system manageability through structured configuration parameters.
2Measurement precision
If per-panel power control is implemented, then power management accuracy is improved, but the configuration and control complexity increases
Solution Approach 1:
The patent applies local quality by allowing different power control parameters to be configured for different panels. Each panel can have its own maximum output power, pathloss reference signal, and power control adjustment state, enabling optimized power management tailored to each panel's specific characteristics and transmission requirements while maintaining standardized configuration structures.
Solution Approach 2:
The patent introduces multiple power control parameters including Pcmax,f,c(i,l) for maximum output power per panel, PLb,f,c(qd) for pathloss reference signals, and fb,f,c(i,l) for power control adjustment states. These parameter changes enable precise power control for each panel while maintaining manageable configuration through structured parameter definitions and relationships.
3Adaptability or versatility
If multiple close loop power control states are configured, then power control flexibility is improved, but the system complexity increases
Solution Approach 1:
The patent implements dynamic power control by introducing multiple close loop power control states (l) that can be independently adjusted for each panel. The power control adjustment states (fb,f,c(i,l)) can be dynamically modified based on transmission conditions, allowing the system to adapt to changing requirements while maintaining structured management through the closed-loop feedback mechanism.
Data Source
AI summary
Systems, apparatuses, methods, and computer-readable media are provided for per-panel power control configuration for uplink transmissions by a user equipment (UE). Other embodiments may be described and/or claimed.