Mobile Terminal Transmit Power Control via RSSI and Rate
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Solution Overview
Problem
Mobile terminals consume excessive power when transmitting data at a fixed maximum power, leading to reduced battery life due to inefficient power management, especially when signal strength varies while accessing a wireless access point.
Innovation Solution
A transmit power control method that dynamically adjusts the power based on the received signal strength indicator (RSSI) and data sending rate by referencing a pre-established transmit power relationship table, allowing the mobile terminal to operate at the minimum required power without compromising communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile terminal operates at a fixed maximum transmit power to ensure good data transmission quality, then the data transmission quality is improved, but the power consumption increases excessively and battery life is reduced
Solution Approach 1:
The patent implements dynamic transmit power adjustment by continuously monitoring RSSI values and comparing them against threshold ranges. The system transitions from a static fixed-power mode to a dynamic adaptive mode where transmit power is adjusted in real-time based on signal conditions, thereby reducing power consumption while maintaining transmission quality.
Solution Approach 2:
The system changes the transmit power parameter based on RSSI measurements. By establishing power-RSSI correspondence relationships and comparing current RSSI values against stored thresholds, the system selectively adjusts the transmit power parameter to appropriate levels, avoiding unnecessary maximum power operation and reducing overall power consumption.
2Reliability
If the mobile terminal uses a fixed maximum transmit power regardless of signal strength, then communication reliability is maintained, but battery life is severely affected due to excessive power consumption
Solution Approach 1:
The patent implements dynamic transmit power adjustment by continuously monitoring RSSI values and comparing them against threshold ranges. The system transitions from a static fixed-power mode to a dynamic adaptive mode where transmit power is adjusted in real-time based on signal conditions, thereby reducing power consumption while maintaining transmission quality.
Solution Approach 2:
The system changes the transmit power parameter based on RSSI measurements. By establishing power-RSSI correspondence relationships and comparing current RSSI values against stored thresholds, the system selectively adjusts the transmit power parameter to appropriate levels, avoiding unnecessary maximum power operation and reducing overall power consumption.
3Use of energy by moving object
If the mobile terminal adjusts transmit power dynamically based on RSSI and sending rate, then power consumption is reduced and battery life is prolonged, but the device complexity increases due to additional monitoring and control mechanisms
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors RSSI values, compares them against stored thresholds, and adjusts transmit power accordingly. This closed-loop control uses feedback from the wireless environment to automatically optimize power consumption, reducing the need for complex manual configuration or high-level processing.
Solution Approach 2:
The system performs self-adjustment of transmit power based on pre-established power-RSSI correspondence relationships stored in memory. The mobile terminal autonomously monitors its own signal conditions and makes power adjustments without requiring external control or complex processing, effectively serving itself to optimize power consumption.
Data Source
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AI summary
The present invention relates to a transmit power control method and apparatus, which are applied to a mobile terminal. The method includes: monitoring whether the mobile terminal has accessed a wireless access point AP; when the mobile terminal has accessed the AP, detecting a received signal strength indicator RSSI of a signal that is sent by the AP and received by the mobile terminal, and detecting a data sending rate at which the mobile terminal sends data to the AP; obtaining a pre-established transmit power relationship table; searching the transmit power relationship table for a preset transmit power corresponding to both the RSSI and the data sending rate, and use the preset transmit power as a first target transmit power; and adjusting a current transmit power of the mobile terminal to the first target transmit power, so that the mobile terminal sends data to the AP according to the first target transmit power. This can reduce an unwanted power loss of the mobile terminal to a great extent, so as to reduce a battery power loss of the mobile terminal and further prolong a battery life of the mobile device.