Adaptive Power Control Node for Cellular Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In cellular communications systems, existing power control methods struggle to balance signal quality and interference, particularly in adapting to varying conditions such as the presence of high data rate User Equipments (UEs), which affects the choice of appropriate power control schemes.
Innovation Solution
The implementation of a controlling node that generates and transmits power control commands using either a signal quality based or a signal strength based power control scheme, or both, allowing for adaptive selection based on parameters like target received signal level, assigned resources, and radio environment characteristics, enabling effective power control for UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single power control scheme is used, then the system is simple to operate, but it cannot adapt to varying conditions such as the presence of high data rate UEs
Solution Approach 1:
The system dynamically selects between different power control schemes (signal quality based or signal strength based) depending on the detected conditions, such as the presence of high data rate UEs. This dynamic adaptation allows the system to optimize performance for varying scenarios without requiring a completely complex reconfiguration, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The system changes the operational parameters of power control by switching between different schemes (signal quality based vs. signal strength based) based on detected conditions. This parameter change enables the system to adapt to high data rate UEs and other varying conditions while maintaining a relatively simple underlying architecture.
2Reliability
If signal quality based power control is used, then signal quality is improved, but interference management may be insufficient in certain scenarios
Solution Approach 1:
The system uses feedback from the detected conditions (such as presence of high data rate UEs, signal strength measurements, and signal quality metrics) to determine which power control scheme to apply. This feedback mechanism allows the system to switch between signal quality based and signal strength based control, thereby managing both signal quality and interference effectively according to the current operational context.
Data Source
AI summary
A controlling node (210) for UEs (115) in a cell in a communications system (200), arranged to generate (255) and transmit (230, 235) control commands to the UEs regarding their output power level, and to generate those control commands using either at least a first or a second power control scheme. In embodiments, the first power control scheme is a signal quality based power control scheme and the second power control scheme is a signal strength based power control scheme. In embodiments, the controlling node (210) is arranged to receive (230, 240) from a network controlling node (205) information regarding the capabilities of at least one other controlling node (220) in the cellular communications system (200) with respect to which power control scheme or schemes that the other controlling node (220) is arranged to use.