Mobile Station Amplifying Path Selection Using RSSI Thresholds
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Solution Overview
Problem
Mobile stations face a challenge in selecting the appropriate amplifying path between power amplifiers (PA) and low noise amplifiers (LNA) to balance power consumption and communication quality, as PAs are effective but power-intensive, while LNAs are weak in signal amplification.
Innovation Solution
A method and system in a mobile station that dynamically selects between LNA and PA paths based on received signal strength indication (RSSI) and network stability, using a controller to switch between the paths and adjust sensitivity thresholds to optimize power usage and communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the PA path is used to amplify signals, then signal amplification capability is improved, but power consumption increases
Solution Approach 1:
The system dynamically switches between LNA path and PA path based on real-time signal strength conditions. The controller monitors RSSI values and automatically selects the appropriate amplifying path, making the system adaptable to varying signal conditions rather than using a fixed configuration.
Solution Approach 2:
The system changes the operating parameters by switching between different amplifying paths (LNA vs. PA) based on signal strength thresholds. This parameter change allows the system to optimize the balance between amplification capability and power consumption according to actual communication conditions.
2Use of energy by moving object
If the LNA path is used to save power, then power consumption is reduced, but signal amplification capability deteriorates
Solution Approach 1:
The system employs dynamic path selection that adapts to signal conditions. When signal strength is sufficient, the LNA path is selected to save power; when signal strength is weak, the system automatically switches to the PA path to ensure adequate amplification, thus dynamically balancing power consumption and amplification capability.
Solution Approach 2:
The controller acts as an intermediary that monitors signal conditions and decides which amplifying path to use. It mediates between the power-saving requirement (LNA path) and the amplification requirement (PA path) by making intelligent selections based on RSSI thresholds and network stability criteria.
3Use of energy by moving object
If sensitivity threshold is lowered to select LNA path more often, then power consumption is reduced, but network stability deteriorates due to frequent switching
Solution Approach 1:
The system uses feedback mechanisms to monitor both signal strength and network stability. When the network is determined to be unstable, the system adjusts its behavior to avoid frequent switching, thus using feedback information to maintain stability while still optimizing power consumption during stable periods.
Solution Approach 2:
The system performs preliminary assessment of network stability before making path switching decisions. By evaluating stability conditions in advance, the system can prevent frequent switching that would occur with overly sensitive thresholds, thus maintaining network stability while still achieving power savings when conditions are favorable.
Data Source
AI summary
A mobile station communicates with an access point (AP). The mobile station includes a low noise amplifier (LNA) path, a power amplifier (PA) path, a switch to select the LNA path or the PA path, and a controller directing the switch. The controller estimates amplifying power of the LNA, transmitting power and a sensitivity threshold of the PA. The controller receives a current received signal strength indication (RSSI) value of the AP. The controller determines whether amplifying power of the LNA path exceeds the PA sensitivity threshold. The controller transmits a selection signal directing the switch to select the LNA path if the amplifying power of the LNA path exceeds the sensitivity threshold of the PA.