Differential Power Control for Multi-Antenna Imbalance
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in power imbalance compensation across multiple antennas, particularly at high power levels, which can lead to increased battery consumption and reduced link throughput.
Innovation Solution
A method and apparatus for transmitting a differential power control message based on the power imbalance between multiple antennas, allowing for dynamic adjustment of transmit power to compensate for the imbalance, with the message being received and processed by both the base station and user equipment to optimize power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If imbalance compensation is applied at high power levels, then link efficiency is improved, but battery consumption increases
Solution Approach 1:
The system dynamically adjusts the degree of imbalance compensation based on transmit power levels. At high power levels, full compensation is applied to maximize link efficiency. At low power levels, compensation is reduced or disabled to preserve battery life. This dynamic adaptation resolves the contradiction by making the compensation mechanism flexible rather than static.
Solution Approach 2:
The patent changes the parameter of power level to determine the appropriate compensation strategy. By monitoring transmit power levels and adjusting compensation accordingly, the system optimizes the trade-off between link efficiency and battery consumption. This parameter-based approach allows the system to adapt to different operating conditions.
2Measurement precision
If differential power control messages are transmitted for each antenna, then power distribution accuracy is improved, but signaling overhead increases
Solution Approach 1:
The power control mechanism is segmented into common power control (affecting all antennas) and differential power control (affecting individual antennas). This segmentation allows the system to apply detailed per-antenna control only when necessary, while using coarser common control for general power management, thereby reducing overall signaling overhead while maintaining accuracy where needed.
Solution Approach 2:
Instead of applying full differential power control to all antennas continuously, the system applies differential control partially or selectively based on actual imbalance conditions. This partial action approach maintains power distribution accuracy when imbalances exist while minimizing signaling overhead during normal operating conditions.
Data Source
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AI summary
Methods and apparatuses for wireless communication are provided. In an aspect, Transmissions are received from multiple antennas of a user equipment and a differential power control message that is based on an imbalance of transmitted power from the multiple antennas is transmitted. In another aspect, a differential power control message that is based on an imbalance of transmitted power from multiple antennas of a user equipment is received and based on the message, the imbalance is compensated for by varying a transmit power from one or more of the multiple antennas.