Antenna Array Coarse Power Adjustment for Cellular Devices
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Solution Overview
Problem
Current cellular communication devices have limited capabilities in adjusting the power of their transmission signals, primarily relying on baseband module power gain adjustments without utilizing antenna array power gain, which restricts flexible power control.
Innovation Solution
The method involves obtaining a reference signal and power information from a base station, determining path loss, and adjusting both the antenna array and baseband module to generate coarse and fine power adjustments, respectively, to optimize transmission power over the communication network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only baseband module power gain adjustment is used, then device complexity is reduced, but power control flexibility and range are limited
Solution Approach 1:
The power adjustment function is segmented into two independent parts: antenna array power gain adjustment (coarse adjustment) and baseband module power gain adjustment (fine adjustment). This segmentation allows each component to operate within its optimal range, with the antenna array handling large-scale power changes and the baseband module handling precise power control, thereby improving overall power control flexibility without excessive complexity
Solution Approach 2:
The patent introduces a new dimension of power control by utilizing antenna array power gain, which is traditionally not used for power adjustment. This adds a spatial dimension to power control alongside the traditional baseband module adjustment, creating a two-dimensional power control space that significantly enhances flexibility and range
2Power
If antenna array power gain adjustment is added, then power control range and flexibility are improved, but device complexity increases
Solution Approach 1:
The power adjustment range is segmented into coarse adjustments (handled by antenna array, e.g., 0-15 dB range) and fine adjustments (handled by baseband module, e.g., 1 dB steps). This segmentation allows the system to achieve a wide total power adjustment range (e.g., 0-30 dB) while keeping each individual adjustment mechanism relatively simple and manageable
Solution Approach 2:
The system dynamically switches between coarse adjustment mode (antenna array) and fine adjustment mode (baseband module) based on the required power change magnitude. This dynamic operation allows the system to optimize performance for different scenarios: using antenna array for rapid large-scale adjustments and baseband module for precise power control, thereby achieving wide power range without proportionally increasing complexity
3Productivity
If coarse power adjustment via antenna array is implemented, then power adjustment speed is improved, but measurement and control precision requirements increase
Solution Approach 1:
The system performs preliminary path loss measurement and power calculation before executing power adjustment. By pre-calculating the required power adjustment based on measured path loss and target received power, the system can rapidly command the antenna array to the appropriate power level without iterative adjustments, thereby achieving fast power adjustment while maintaining precision through accurate preliminary measurement
Solution Approach 2:
The baseband module acts as an intermediary that receives path loss measurement data, calculates the required power adjustment, and translates it into appropriate commands for the antenna array. This intermediary function ensures that the coarse power adjustment maintains precision by using accurate measurements and calculations, while the antenna array itself remains a simple, fast-responding component
Data Source
AI summary
Aspects of the subject disclosure may include, for example, obtaining a reference signal, power information regarding the reference signal, and maximum power threshold for the communication device from a base station over a communication network. Further embodiments can include measuring a power of reference signal obtained from the base station resulting in a measure power, and determining a path loss between the base station and the communication device based on the measured power. Additional embodiments can include adjusting the antenna array to generate a coarse power adjustment for the communication device based on the path loss and the maximum power threshold, and providing a transmission signal to the base station according to the coarse power adjustment over the communication network. Other embodiments are disclosed.