Uplink Transmit Power Control via Configuration-Specific Alpha Parameters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication technologies, such as 5G NR, face challenges in managing uplink transmission power effectively, particularly when using multiple antennas or beams, as existing power control methods do not adequately account for the transmission configuration, leading to interference issues with neighboring cells.
Innovation Solution
Implementing a transmit power control mechanism that uses alpha parameters based on the transmission configuration, allowing user equipment (UE) to determine or receive indications of optimal power levels for uplink transmissions, thereby mitigating interference by adjusting power according to the specific antenna or beam used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink transmit power is increased to improve signal quality and coverage, then reception quality is improved, but interference to neighboring cells increases
Solution Approach 1:
The patent applies local quality by configuring different alpha parameters for different uplink transmission configurations (e.g., different antenna panels or beams). Each transmission configuration receives a tailored alpha parameter that reflects its specific interference characteristics to neighboring cells. This allows the system to optimize power control locally for each transmission configuration rather than applying a uniform power control parameter globally, thereby improving reception quality while minimizing interference to neighboring cells on a per-configuration basis.
2Reliability
If multiple transmission configurations are used to improve signal diversity and coverage, then reliability is improved, but interference management becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the uplink power control management into separate, independent alpha parameter configurations for each transmission configuration. Instead of managing interference for multiple transmission configurations as a single complex system, the patent segments the power control parameters so that each antenna panel or beam has its own alpha parameter. This segmentation simplifies interference management by allowing independent optimization of each transmission configuration without requiring complex cross-configuration coordination.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the alpha parameter based on the specific transmission configuration being used. The base station configures different alpha parameters for different uplink transmission configurations, and these parameters can be updated to reflect changing interference conditions. This allows the system to adapt power control parameters to match the specific characteristics of each transmission configuration, managing complexity through parameterization rather than structural complexity.
3Object-generated harmful factors
If transmit power is adjusted dynamically to reduce interference, then interference control is improved, but power control mechanism complexity increases
Solution Approach 1:
The patent applies parameter changes by introducing the alpha parameter as a configurable variable in the uplink power control equation. The base station dynamically adjusts the alpha parameter for different transmission configurations based on interference measurements and network conditions. This parameter-based approach allows flexible interference control without requiring complex structural changes to the power control mechanism. The alpha parameter serves as a simple yet effective control variable that can be modified to achieve interference reduction goals.
Solution Approach 2:
The patent applies feedback by having the base station measure interference from uplink transmissions and use this information to adjust the alpha parameters for different transmission configurations. The base station monitors the interference caused by uplink signals to neighboring cells and dynamically updates the alpha parameters to optimize interference control. This feedback loop enables adaptive interference management where the power control parameters are continuously refined based on actual network conditions, achieving effective interference control through a relatively simple feedback-driven parameter adjustment mechanism.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for interference control for uplink transmission, for example, using multiple transmission configurations (e.g., antennas, beams, and/or antenna panels). A method that may be performed by a user equipment (UE) includes determining a transmit power for one or more uplink transmissions to a base station (BS) using one or more transmit power parameters. The one or more transmit power parameters are based, at least in part, on a transmission configuration of the one or more uplink transmissions. The method generally includes transmitting the one or more uplink transmissions to the BS using the determined transmit power.