Wireless Power Control via Feedback-Driven Pathloss Adaptation
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Solution Overview
Problem
Next-generation wireless communications systems face challenges in efficiently managing power control parameters and settings due to increased complexity, leading to potential negative impacts on data rate and interference, particularly with the rise in power control parameters and settings.
Innovation Solution
A system and method for wireless power control that involves receiving and determining transmit power levels based on configured downlink signals and pathloss, using open-loop and closed-loop power control parameters, allowing for efficient signaling and reduced communications overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmit power level is increased to improve data rate, then the data rate of the communications device is improved, but the data rate of other communications devices is negatively impacted due to increased interference
Solution Approach 1:
The patent implements closed-loop power control where the communications device receives feedback about its transmit power level and adjusts accordingly. The device determines a second power level based on a first power level and received feedback, creating a feedback mechanism that balances data rate improvement with interference reduction to other devices.
2Object-affected harmful factors
If the transmit power level is decreased to reduce interference, then the interference to other communications devices is reduced, but the data rate of the communications device is reduced due to insufficient signal strength
Solution Approach 1:
The patent employs dynamic power adjustment where the transmit power level is not fixed but continuously adapted based on feedback. The device determines a second power level dynamically based on the first power level and received feedback, allowing the system to optimize between interference reduction and maintaining sufficient signal strength for data rate.
3Adaptability or versatility
If more power control parameters and settings are configured to improve power control flexibility, then the flexibility of power control is improved, but the communications overhead increases negatively impacting overall system performance
Solution Approach 1:
The patent changes the parameter representation by using feedback indicators that reference predefined power levels rather than signaling complete power control configurations. The feedback indicates a power level selected from a set of power levels, reducing the amount of information that needs to be communicated while maintaining flexibility in power control adjustments.
Data Source
AI summary
A method for operating a user equipment (UE) includes receiving at least one of a configuration of a first group of one or more downlink (DL) signals, a configuration of a second group of one or more open-loop power control (PC) parameters, a configuration of a third group of one or more closed-loop PC parameters, or a configuration of a fourth group of one or more loop states, receiving a configuration of a PC setting, wherein the PC setting is associated with at least one of a subset of the first group, a subset of the second group, a subset of the third group, or a subset of the fourth group, selecting a transmit power level in accordance with the PC setting and a pathloss, wherein the pathloss is determined in accordance with a DL reference signal (SS) and a synchronization signal (SS).