NR Uplink Power Control for Multi-Beam and Multi-TRP Transmissions
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Solution Overview
Problem
Existing power control methods in NR technology struggle to effectively manage multiple power control parameters in scenarios involving multi-beam, multi-panel, or multi-TRP environments, lacking comprehensive solutions for supporting diverse application scenarios and frequency bands.
Innovation Solution
The method determines power control parameters based on space domain resource information, associating them with open-loop, closed-loop, and path loss measurement parameters, allowing for multiple parameters per transmission to support beam, panel, or multi-TRP scenarios, and adjusts transmit power accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional power control methods are used with a single parameter per transmission, then the system is simple to manage, but it cannot support multi-beam, multi-panel, or multi-TRP scenarios
Solution Approach 1:
The patent segments power control parameters by associating them with specific space domain resource information (SDRI) such as SRS resources, spatial relations, or beams. Each SDRI can have its own set of power control parameters including target receiving power, path loss factor, and closed-loop adjustment amounts. This segmentation allows the system to support multiple beams, panels, or TRPs independently while maintaining manageable complexity through organized parameter groups.
2Adaptability or versatility
If multiple power control parameters are configured for one transmission, then beam/panel/multi-TRP scenarios are supported, but the complexity of power control management increases
Solution Approach 1:
The patent introduces space domain resource information (SDRI) as an intermediary that links transmissions to specific power control parameter sets. The SDRI (such as SRS resource indicators, spatial relation indices, or beam identifiers) acts as a mediator that automatically selects and associates the appropriate power control parameters with each transmission, reducing manual configuration complexity while enabling support for multiple beams, panels, and TRPs.
3Reliability
If power control parameters are not specifically adjusted for different scenarios, then configuration is simple, but communication quality and interference management deteriorate
Solution Approach 1:
The patent applies local quality by allowing different power control parameters to be configured for different space domain resources. Each beam, panel, or TRP can have optimized power control settings (target receiving power, path loss compensation factors, closed-loop adjustments) tailored to its specific channel conditions and requirements. This enables improved communication quality and interference management for each local scenario while maintaining a unified power control framework.
Data Source
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AI summary
Disclosed are power control method and device, and method and device for determining target receiving power. The power control method includes: space domain resource information of a transmission is received; a power control parameter of the transmission is determined according to the space domain resource information of the transmission and an association between space domain resource information and power control parameter, where a number of at least one parameter of the power control parameter of the transmission is greater than 1; and a transmit power of the transmission is determined according to the power control parameter of the transmission. According to the embodiments of the present disclosure, the power control parameter is configured for one transmission, a number of at least one parameter of the configured power control parameter is greater than 1, and a beam scenario or a panel scenario or a multi-TRP scenario is supported.