Power Control Index for Balanced Access and Backhaul Links
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Solution Overview
Problem
In fifth-generation communications systems, the transmit powers of access links and backhaul links for integrated access and backhaul nodes are often unbalanced, affecting link performance and requiring effective power control methods.
Innovation Solution
A power control method where a power control index is determined based on the transmission mode and/or transmission capability of a node, allowing for flexible and quick adjustments in power control parameters across various scenarios, including spatial division multiplexing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional transmit power calculation procedure is used, then the power control implementation is simple, but the transmit powers of access link and backhaul link become unbalanced
Solution Approach 1:
The patent introduces a power control index parameter that can take different values (e.g., 0 or 1) to switch between different power control procedures. This parameter change enables the system to select appropriate power control methods for different transmission modes, thereby achieving balanced transmit powers for access and backhaul links while maintaining implementation simplicity through parameter-based control.
2Reliability
If power control parameters are adjusted for different transmission modes, then link performance is improved, but the control mechanism becomes more complex
Solution Approach 1:
The patent implements dynamic power control by allowing the power control index to be adjusted based on transmission modes and transmission capabilities. The system can dynamically switch between different power control procedures depending on whether spatial division multiplexing is used and the number of transmit beams, enabling adaptive optimization of link performance without requiring complex manual configuration.
Solution Approach 2:
By using a power control index parameter that changes based on transmission mode and capability, the system achieves flexible power control adjustment. Different parameter values correspond to different power control procedures, making it easy to manage complexity through parameterization rather than hardcoding multiple control mechanisms.
3Adaptability or versatility
If a single power control procedure is used for all scenarios, then the implementation is simple, but it cannot meet diverse application scenarios and transmission modes
Solution Approach 1:
The patent creates a universal power control framework that can handle multiple transmission modes and scenarios through a single unified mechanism. The power control index serves as a universal parameter that adapts the power control procedure to different transmission modes (spatial division multiplexing, non-spatial division multiplexing) and capabilities (number of transmit beams), achieving multi-functionality without requiring separate control mechanisms for each scenario.
Data Source
AI summary
This application provides a power control method including: receiving, by a second node, radio resource control (RRC) from a first node, where the RRC includes a power control parameter set configured for the second node, the power control parameter set includes a power control index, and the power control index is determined based on a transmission mode or a transmission capability of the second node; receiving downlink control information (DCI) including power control index indication information used to: when the first node schedules the second node, indicate a value of a power control index that is for uplink transmission and that is for the second node; determining a transmit power based on the power control index indication information and the power control parameter set; and sending a signal at the determined transmit power.