Subband Power Control Correction for Wireless Devices
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately controlling transmit power across frequency bands, leading to inefficiencies and potential interference.
Innovation Solution
The method involves dividing a frequency band into subbands for closed loop power control (CLPC), obtaining transmit power out measurements for each subband, averaging these measurements to calculate a correction, and applying this correction to each subband for improved power control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmit power control is performed using traditional methods without subband division, then the control process is simpler, but power control accuracy deteriorates and interference increases
Solution Approach 1:
The frequency band is divided into multiple subbands for closed loop power control. Each subband is measured and corrected independently, allowing more precise power control across different frequency regions. This segmentation enables the system to achieve subband-level power accuracy while managing complexity through structured organization of the control process.
2Object-affected harmful factors
If transmit power is not stabilized across subbands, then the system is simpler to operate, but interference increases and communication quality deteriorates
Solution Approach 1:
The system implements closed loop power control with feedback mechanisms. Transmit power out measurements are obtained for each subband, corrections are calculated based on these measurements, and the corrections are applied to stabilize power across subbands. This feedback loop continuously monitors and adjusts power levels, reducing interference and improving communication quality.
3Measurement precision
If subband-level power measurements and corrections are implemented, then power control accuracy improves, but measurement and processing time increases
Solution Approach 1:
By dividing the frequency band into subbands, the system performs measurements and corrections on smaller, more manageable segments. This segmentation allows parallel processing of multiple subbands and reduces the time required for each individual measurement while maintaining overall precision across the entire frequency spectrum.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless device may divide a frequency band into a plurality of subbands for closed loop power control (CLPC). The wireless device may obtain a transmit power out measurement for each subband of the plurality of subbands. The wireless device may average the transmit power out measurements of the plurality of subbands to obtain a transmit power out correction as part of the CLPC. The wireless device may transmit a communication based at least in part on the transmit power out correction, wherein the transmit power out correction is applied to a transmit power out for each subband. Numerous other aspects are described.