IAB Power Control Parameter Configuration for Interference Management
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Solution Overview
Problem
In 5G communication systems, integrated access and backhaul (IAB) nodes face challenges in configuring power control parameters across various transmission modes, leading to decreased transmission capacity due to interference.
Innovation Solution
A power control method where a first node determines a power control parameter indicating expected transmit power in a specific transmission mode and sends a message to an upper-level node or donor base station to request and configure the appropriate power control parameters for different transmission modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single power control parameter is used for all transmission modes, then the device complexity is reduced, but the transmission capacity decreases due to interference in different transmission modes
Solution Approach 1:
The patent segments the power control parameters by transmission mode, creating separate parameter sets for different transmission modes (e.g., TDM, SDM, FD modes). This allows each mode to have optimized power control parameters tailored to its specific interference characteristics, thereby improving transmission capacity without excessively increasing device complexity through systematic parameter management.
Solution Approach 2:
The patent implements dynamic power control parameter configuration where the network can adjust and reconfigure parameters based on current transmission mode requirements. This dynamic approach allows the system to adapt to changing interference conditions in different transmission modes, maintaining high transmission capacity while managing complexity through centralized control.
2Reliability
If power control parameters are optimized for each transmission mode, then transmission performance improves, but the configuration complexity increases
Solution Approach 1:
The patent creates a universal power control parameter configuration framework that handles multiple transmission modes through a unified mechanism. The network side maintains and manages parameter sets for different modes, providing a multi-functional solution that improves transmission performance across all modes while centralizing the complexity management at the network level rather than the device level.
Solution Approach 2:
The network acts as an intermediary that manages and coordinates power control parameters for different transmission modes. By centralizing parameter management at the network side, the patent reduces device complexity while still enabling optimized performance for each transmission mode through the intermediary's coordinated control.
3Productivity
If power control parameters are frequently adjusted for different transmission modes, then transmission capacity is improved, but the signaling overhead increases
Solution Approach 1:
The patent implements preliminary configuration of power control parameter sets for different transmission modes before actual transmission occurs. The network pre-configures and stores multiple parameter sets corresponding to different modes, allowing quick selection and switching without frequent real-time adjustments, thereby improving transmission capacity while minimizing signaling overhead.
Solution Approach 2:
The patent uses parameter sets that can be copied and reused across different transmission modes. Instead of creating entirely new parameters for each mode, the system copies and adapts base parameter sets, reducing the amount of unique configuration data needed and thereby lowering signaling overhead while still enabling mode-specific optimization.
Data Source
AI summary
Embodiments of this application disclose a power control method and a power control apparatus, to alleviate a transmission capacity decrease caused by interference, and improve transmission performance. The method in embodiments of this application includes: A first node determines a first power control parameter. The first power control parameter is used to indicate first transmit power expected by the first node in a first transmission mode. The first node sends a first message to a second node. The first message carries the first power control parameter, and the first message is used to request the first transmit power expected by the first node in the first transmission mode. The second node is an upper-level node of the first node or a donor base station.