GSM Terminal Power Control Using 1dBm Calibration Parameter
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Solution Overview
Problem
Current GSM mobile terminal power control technologies lack precision, resulting in increased power consumption and interference, as they were not designed to handle wide network coverage and numerous subscribers effectively, leading to inefficiencies in energy use and network capacity.
Innovation Solution
A method and apparatus for controlling terminal power that determines the terminal type and adjusts output power based on a calibration parameter within specific rated output power ranges to achieve precise power control, specifically for GSM, DCS, and PCS systems, allowing for reduced power consumption and improved network capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional power control standards are used in GSM mobile terminals, then the terminal can operate with wide network coverage and support numerous subscribers, but the power control precision deteriorates with an error generally larger than 2dB
Solution Approach 1:
The patent changes the power control parameter precision from conventional 2dB steps to 1dBm steps. By introducing a calibration parameter that maps TA values to specific power levels with 1dBm precision, the system achieves finer power control granularity while maintaining compatibility with existing GSM network infrastructure and wide coverage requirements.
Solution Approach 2:
The patent segments the power control process into two distinct stages: coarse power control using conventional TA-based methods for wide coverage, and fine power control using the calibration parameter for 1dBm precision. This segmentation allows each stage to optimize for its specific function without compromising the other.
2Reliability
If the GSM mobile terminal uses higher power to ensure communication effect, then the communication reliability is improved, but the interference to other terminals increases and network capacity is affected
Solution Approach 1:
The patent implements a feedback mechanism where the terminal determines the current TA value, looks up the corresponding calibration parameter, and adjusts the power accordingly. This closed-loop feedback ensures the terminal transmits at the minimum necessary power to maintain reliable communication, thereby reducing interference to other terminals while preserving communication effectiveness.
Solution Approach 2:
By changing the power control precision to 1dBm steps, the system can make finer adjustments to transmit power. This allows the terminal to use slightly lower power when conditions permit, reducing interference while maintaining sufficient communication reliability through precise power matching to actual channel conditions.
3Reliability
If the GSM mobile terminal uses higher power for transmission, then the communication coverage is ensured, but the internal power consumption increases
Solution Approach 1:
The patent changes the power control granularity from 2dB steps to 1dBm steps, enabling the terminal to use lower power when channel conditions are good. The calibration parameter allows precise matching of transmit power to actual needs, reducing unnecessary power consumption while maintaining communication coverage through accurate power adjustment based on TA values.
Data Source
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AI summary
The present invention provides a method and an apparatus for controlling terminal power. The method includes the following steps of: determining whether a power control level set in the terminal is reached or not when controlling the terminal power; if yes, then adjusting a power of the power control level based on a calibration parameter configured in the terminal within a rated output power range corresponding to the power control level; wherein the calibration parameter is 1dBm; controlling an output power of the terminal according to the adjusted power. The present invention can further perform an accurate terminal power control for reducing power consumption, conserving resources, and increasing system capacity based on a compatibility with conventional power control.