RF Front-End Gain Prediction for Low-Power Wireless Reception
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Solution Overview
Problem
Conventional wireless communication devices with radio frequency front-end modules experience unnecessary power consumption due to the automatic gain control mechanism, particularly in devices that need to maintain connections for extended periods, leading to inefficiencies in power usage.
Innovation Solution
A method to predict the received signal strength in current slots based on historical data, adjusting the gain coefficient of the receive channel in the radio frequency front-end module to minimize unnecessary power consumption by shortening the time the low noise amplifier is enabled or disabled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic gain control (AGC) is used to control the receive channel of the radio frequency front-end module, then the receiving performance is improved, but the power consumption increases due to the low noise amplifier (LNA) being enabled in advance for an invalid period
Solution Approach 1:
The patent applies preliminary action by predicting the received signal strength indication before the actual signal arrival, allowing the system to pre-configure the LNA gain coefficient based on predicted conditions rather than waiting for signal detection. This eliminates the invalid enabling period where the LNA consumes power without receiving signals.
Solution Approach 2:
The patent implements dynamics by making the LNA gain coefficient adjustable and adaptive based on predicted signal conditions. Instead of a fixed gain setting, the system dynamically modifies the gain coefficient according to predicted received signal strength, optimizing both performance and power consumption for different scenarios.
2Reliability
If the low noise amplifier (LNA) is enabled in advance to ensure signal reception, then the signal reception reliability is improved, but the invalid enabling period causes unnecessary power consumption
Solution Approach 1:
The system performs preliminary prediction of signal strength before the actual reception slot, allowing the LNA to be enabled only when and where signals are actually expected. This eliminates the invalid enabling period and associated power consumption loss while maintaining reliable signal reception.
Solution Approach 2:
The patent uses feedback by continuously monitoring historical received signal strength indications and using this information to predict future signal conditions. This feedback mechanism allows the system to adaptively control the LNA enabling timing, ensuring reliable reception while minimizing unnecessary power consumption during invalid periods.
3Ease of operation
If a longer invalid enabling period of the LNA occurs, then the system is simpler to control, but the power consumption loss increases
Solution Approach 1:
By predicting signal arrival in advance and configuring the LNA accordingly, the system eliminates long invalid enabling periods without complicating the control logic. The prediction mechanism provides a straightforward way to determine when the LNA should be enabled, maintaining control simplicity while dramatically reducing power consumption loss.
Solution Approach 2:
The patent changes the gain coefficient parameter of the LNA based on predicted signal conditions. By adjusting this parameter dynamically according to prediction results, the system optimizes power consumption without requiring complex control mechanisms, achieving energy efficiency through parameter optimization rather than structural complexity.
Data Source
AI summary
This application provides a low-power-consumption control method and a short-range wireless communication chip, and belongs to the field of short-range wireless communication technologies. The method includes: obtaining actual received signal strength indications corresponding to a plurality of historical receive slots; predicting, based on the actual received signal strength indications corresponding to the plurality of historical receive slots, received signal strength corresponding to a current receive slot; and adjusting a gain coefficient of a receive channel in a radio frequency front-end module in the current receive slot based on a predicted received signal strength indication. The radio frequency front-end module is coupled to the short-range wireless communication chip.