Wearable Device Adaptive Cell Search Power Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wearable electronic devices experience unnecessary power consumption when repeatedly searching for a serviceable cell in service-restricted areas, reducing their operating time due to limited battery capacity.
Innovation Solution
Incorporating a sensor and communication processor that adapts cell search periods based on the device's movement state, performing cell searches over a longer period when stationary and a shorter period when moving, to optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device repeatedly performs cell search operation to find a serviceable cell, then the device can maintain network connectivity and service availability, but power consumption increases unnecessarily in service-restricted areas
Solution Approach 1:
The patent applies dynamics by making the cell search period variable rather than fixed. The communication processor dynamically adjusts the cell search period based on movement state detection - using a first period when stationary and a second period when moving. This dynamic adaptation resolves the contradiction by reducing unnecessary searches (lowering power consumption) while maintaining connectivity reliability when needed.
Solution Approach 2:
The patent changes the parameter of cell search period based on detected movement state. When the sensor detects the device is stationary in a service-restricted area, the system changes the search period to a longer interval, reducing power consumption. When movement is detected, the search period changes to a shorter interval to maintain connectivity, thus resolving the contradiction between reliability and energy use.
2Reliability
If the wearable device performs frequent cell search operations, then network service availability is maintained, but operating time is reduced due to limited battery capacity
Solution Approach 1:
The system dynamically adjusts cell search frequency based on movement state, extending operating time by reducing unnecessary searches during stationary periods while maintaining service availability when moving. This resolves the contradiction between service availability and operating duration.
Solution Approach 2:
The patent changes the cell search period parameter based on movement detection, using a first period (longer interval) when stationary and a second period (shorter interval) when moving. This parameter adaptation extends battery operating time while preserving network service availability, resolving the contradiction.
3Use of energy by moving object
If the electronic device reduces cell search frequency to save power, then power consumption decreases, but network connectivity may be lost in moving state
Solution Approach 1:
The patent uses dynamic adjustment of cell search period based on real-time movement state detection. When moving, the system switches to a shorter search period to maintain connectivity; when stationary, it uses a longer period to save power. This dynamic response resolves the contradiction between power consumption and connectivity reliability.
Solution Approach 2:
The system implements feedback by continuously monitoring movement state through sensors and adjusting cell search frequency accordingly. The feedback loop ensures that power consumption is reduced during stationary periods while connectivity is maintained during movement, resolving the contradiction between these two requirements.
4Weight of moving object
If the wearable device uses a small-sized battery to maintain portability, then device portability is improved, but operating time is reduced under repeated cell search operations
Solution Approach 1:
The patent changes the cell search period parameter based on movement state, using a first period when stationary and a second period when moving. This reduces overall power consumption, allowing the device to maintain portability with a small battery while extending operating time by minimizing unnecessary searches.
Data Source
AI summary
A device and a method for reducing power consumption due to wireless communication in an electronic device are provided. The electronic device includes a sensor, a wireless communication circuit and a communication processor, wherein the communication processor can check a channel state while connected to a network through the wireless communication circuit, can check the movement state of a wearable device through the sensor if the channel state satisfies the specified condition related to network access restriction, can perform a cell search in a first period after a specified first time has elapsed if the wearable device is in a stationary state, and can perform a cell search in a second period that is relatively shorter than the first period if the wearable device is in a mobile state.