WLAN LNA Power Mode Switching for Sensitivity and Battery Life
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Solution Overview
Problem
The high power consumption of the radio frequency front-end module, particularly the low noise amplifier (LNA), in wireless local area network (WLAN) systems, such as Wi-Fi, due to its constant operation in high power modes, increases the overall power consumption of electronic devices without considering actual signal requirements.
Innovation Solution
A WLAN apparatus and method that dynamically adjusts the power consumption mode of the LNA based on the characteristics of the received WLAN signal, including frame type, service type, and communication quality parameters, allowing the LNA to operate in low or high power consumption modes as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LNA operates in high power consumption mode to ensure receiving sensitivity, then the receiving capability is improved, but the overall power consumption of the device increases
Solution Approach 1:
The LNA power consumption mode is dynamically adjusted based on frame type characteristics. The system switches between high power consumption mode and low power consumption mode depending on whether the received frame requires high sensitivity (e.g., management frames, control frames) or can tolerate lower sensitivity (e.g., data frames with strong anti-interference capability). This dynamic adjustment resolves the contradiction by matching power consumption to actual receiving requirements.
Solution Approach 2:
The invention changes the power consumption parameter of the LNA based on the frame type of received WLAN signals. By identifying frame types and their sensitivity requirements, the system adjusts the LNA's operating parameters (power consumption mode) accordingly, achieving optimal balance between receiving sensitivity and power consumption.
2Reliability
If the LNA operates in high power consumption mode to improve receiving capability, then the signal reception quality is improved, but the resource utilization decreases
Solution Approach 1:
The system dynamically adapts the LNA's power consumption mode to match the actual signal reception requirements. By continuously monitoring frame types and adjusting power modes accordingly, the system optimizes resource utilization while maintaining adequate signal reception quality for each specific communication scenario.
Solution Approach 2:
The invention changes the operational parameters of the LNA based on frame type analysis. Different frame types trigger different power consumption modes, allowing the system to efficiently allocate power resources according to the actual communication needs, thereby improving overall resource utilization while maintaining reception quality.
3Reliability
If the LNA operates continuously in high power mode, then the receiving sensitivity is maintained, but the battery life is reduced
Solution Approach 1:
The system implements periodic assessment of frame types and dynamically switches LNA power modes based on the periodic analysis of incoming signals. Instead of continuous high power operation, the LNA alternates between high and low power modes according to the periodic detection of frame types, thereby extending battery life while maintaining receiving sensitivity when needed.
Solution Approach 2:
The LNA power consumption mode is dynamically adjusted based on the periodic analysis of frame types. The system transitions between high power consumption mode and low power consumption mode according to the actual communication requirements detected in each period, optimizing the balance between receiving sensitivity and battery life.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces the overall power consumption of the device by optimizing the LNA's power usage according to signal demands, improving resource utilization and extending battery life.
Implementation Method 1
receive a first WLAN signal from the antenna, and perform gain amplification on the first WLAN signal to obtain a second WLAN signal
Data Source
AI summary
Embodiments of this application provide a WLAN communication apparatus and a control method. The method includes: adjusting power consumption of an external LNA based on a WLAN signal, to dynamically adjust the power consumption of the external LNA based on an actual requirement, so that the power consumption of the external LNA is reduced while a service requirement is ensured, and further, overall power consumption of a device is reduced.