Downlink Transmit Power Adjustment for Interference and Energy
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Solution Overview
Problem
Current wireless communication systems face challenges in dynamically adjusting downlink transmit power, leading to inefficiencies in energy consumption and interference management, particularly in scenarios requiring flexible power configurations for synchronization signals and physical downlink shared channels.
Innovation Solution
Implementing a method to transmit configurations indicating different transmit powers for downlink reference signals and physical downlink shared channels, allowing for semi-static or dynamic power adjustments between transmissions, thereby enabling flexible power management and reducing overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If downlink transmit power is adjusted dynamically for different transmissions, then energy efficiency and interference management are improved, but system complexity and overhead increase
Solution Approach 1:
The patent implements dynamic transmit power adjustment where the network node transmits downlink reference signals with different powers in different transmissions. The system transitions from static power configuration to dynamic power control, allowing the transmit power to vary based on transmission conditions, UE capabilities, and network requirements. This dynamic approach directly improves energy efficiency by adjusting power only when necessary while managing interference adaptively.
Solution Approach 2:
The patent changes the power parameter of downlink reference signals between different transmissions. Specifically, the network node configures and applies different transmit powers (first power for first transmission, second power for second transmission) to the same reference signal type, enabling flexible power management. This parameter variation allows the system to optimize energy consumption and interference characteristics without changing the fundamental signal structure.
2Object-affected harmful factors
If different transmit powers are used for synchronization signals and physical downlink shared channels, then interference management is improved, but configuration complexity increases
Solution Approach 1:
The patent segments the power configuration into different parts: downlink reference signals (including synchronization signals) and physical downlink shared channels. Each segment can be configured with independent power settings. The network node transmits reference signals with one power level while using different power levels for data channels, allowing granular interference management for each signal type without requiring complete reconfiguration of the entire system.
Solution Approach 2:
The patent applies different power qualities to different signal types locally. Synchronization signals and reference signals receive specific power configurations optimized for their function (robustness for synchronization, efficiency for data), while physical downlink shared channels use separate power settings optimized for throughput. This local optimization allows each signal type to operate at its optimal power level, improving overall interference management while maintaining clear configuration boundaries.
3Adaptability or versatility
If flexible power configurations are implemented for downlink reference signals, then adaptability is improved, but overhead for power management increases
Solution Approach 1:
The patent implements preliminary power configuration where the network node provides power configuration information to the UE in advance (via RRC signaling or other configuration mechanisms). The UE receives and stores the configured power values before actual transmissions occur. This preliminary setup enables flexible power adjustments during operation without requiring real-time negotiation or additional overhead during the actual data transmissions, as the power settings are pre-agreed upon.
Data Source
AI summary
This disclosure provides systems, methods, and apparatuses for adjustment of transmit powers for different transmissions of a reference signal. Some techniques and apparatuses described herein provide semi-static configuration or dynamic signaling such that a transmit power of a reference signal such as a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS) can be modified from transmission-to-transmission. Additionally, this disclosure provides modification of a transmit power of a physical downlink shared channel (PDSCH) from transmission-to-transmission, such as using semi-static configuration or dynamic signaling. By modifying transmit power of an SSB, CSI-RS, or PDSCH, a network node may reduce interference and enable full-duplex or enhanced duplex operation. Furthermore, the network node may conserve energy by modifying transmit power. Still further, the techniques described herein may reduce overhead relative to reconfiguring an SSB, a CSI-RS resource, or a PDSCH each time a transmit power is to be modified.