Terminal Device Power Control via RF Current Reduction
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Solution Overview
Problem
Terminal devices experience significant power consumption and reduced standby time due to continuous readiness to receive data in screen-off states, even when no services are being transmitted, leading to unnecessary energy usage.
Innovation Solution
Implementing a power consumption control method that switches terminal devices from a normal working mode to a low power mode when in a screen-off state with low data traffic, reducing radio frequency path current and disabling downlink data reception, while maintaining the ability to switch back to normal mode for burst services or specific tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device continuously monitors and receives downlink data in screen-off state, then data reception reliability is improved, but power consumption increases
Solution Approach 1:
The terminal device dynamically adjusts its working mode between normal mode and low power mode based on real-time detection of screen state and data traffic conditions. This dynamic adaptation allows the device to optimize between data reception reliability and power consumption by switching modes rather than maintaining a fixed state
Solution Approach 2:
The invention changes the operational parameters of the radio frequency path by adjusting current levels between normal and low power modes. By modifying the current parameter based on detected conditions, the system achieves both reliable data reception when needed and reduced power consumption during idle periods
2Use of energy by moving object
If the terminal device switches to low power mode to reduce current in radio frequency path, then power consumption is reduced, but data reception capability is degraded
Solution Approach 1:
The terminal device performs preliminary detection of screen state and data traffic conditions before switching to low power mode. This preliminary action ensures that the device only enters low power mode when appropriate, preventing degradation of data reception capability when data transmission is actually occurring
Solution Approach 2:
The system implements feedback mechanisms where the terminal device continuously monitors data traffic conditions and screen state, then adjusts its working mode accordingly. This feedback loop ensures that the device maintains data reception capability when needed while achieving power savings during idle periods
3Speed
If the terminal device remains in normal working mode to ensure timely data reception, then response time is improved, but standby time is reduced
Solution Approach 1:
The terminal device employs periodic detection of screen state and data traffic conditions, alternating between normal and low power modes based on detected patterns. This periodic action allows the device to achieve timely response when data is actually transmitted while extending standby time during periods of no data activity
Data Source
AI summary
A power consumption control method, a chip system, and a terminal device in the field of terminal technologies is provided. The method includes: detecting, by a terminal device, a screen state and data traffic of the terminal device; and switching the terminal device from a normal working mode to a low power mode when the screen state is a screen-off state and the data traffic is less than or equal to a preset traffic threshold. In the low power mode, the terminal device does not receive downlink data, and current in a radio frequency path of the terminal device drops to a preset current, where the preset current is less than a current value of the radio frequency path in the normal working mode.