Adaptive Power Control for Wireless Modems via Location Detection
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Solution Overview
Problem
In wireless communication systems, electronic apparatuses experience unnecessary power consumption due to ongoing functions like cell search and measurement when stationary, moving, or in an out-of-service state, leading to inefficient energy use.
Innovation Solution
An application processor (AP) and modem system that adapts communication module settings based on location and state information, generating control signals to deactivate or limit functions such as cell search and measurement, thereby optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic apparatus continuously performs cell search and measurement functions, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the communication functions adaptive rather than static. The AP dynamically adjusts the operation mode of the modem based on real-time location information and state information. When the device is stationary or in out-of-service state, the system deactivates unnecessary functions like cell search and measurement. When movement or service is detected, the system activates appropriate functions. This dynamic adjustment resolves the contradiction by maintaining communication reliability only when needed while reducing power consumption during unnecessary operations.
Solution Approach 2:
The patent changes operational parameters of the communication module based on location and state conditions. The AP modifies function activation status, measurement intervals, and search parameters according to whether the device is moving or stationary, and whether it is in-service or out-of-service. By changing these parameters adaptively, the system maintains communication reliability when required while significantly reducing power consumption during periods when full functionality is not needed.
2Adaptability or versatility
If the electronic apparatus performs all communication functions continuously, then adaptability to different states is improved, but power consumption increases
Solution Approach 1:
The system achieves adaptability through dynamic function selection rather than continuous operation. The AP continuously monitors location information and state information, and dynamically activates only the necessary communication functions for each state. This resolves the contradiction by maintaining high adaptability to different location and state conditions while avoiding the power consumption penalty of running all functions continuously.
Solution Approach 2:
The patent segments communication functions into distinct operational modes based on location and state conditions. Different functions are activated for different states: cell search functions for moving states, measurement functions for in-service states, and reduced functionality for stationary or out-of-service states. This segmentation allows the system to be highly adaptable to different conditions while minimizing power consumption by activating only relevant segments of functionality.
Data Source
AI summary
An application processor (AP) is operatively connected to a modem. The AP is configured to execute at least one instruction to: acquire location information of the AP; identify, based on the location information of the AP, whether the AP is located within a target area; generate a first control signal for functions being executed by the modem after identifying that the AP is located within the target area; and transmit the first control signal to the modem.