Mobile Device Acceleration Sensor Base Station Search Timing

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Solution Overview

Problem

Mobile electronic devices face challenges in optimizing data communication without user intervention, particularly in determining when to search for a base station to maintain efficient and power-conscious connectivity.

Innovation Solution

Incorporating an acceleration sensor to detect movement states, allowing the device to wait a specified period before searching for a base station when stopped, and searching earlier when still, to differentiate between temporary and permanent stops, thereby reducing power consumption and improving background communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the device searches for base station immediately when stopped, then communication availability is improved, but power consumption increases due to unnecessary searches during temporary stops

Engineering Contradiction:

Improvecommunication availabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary detection of movement state using the acceleration sensor before initiating the base station search process. By detecting whether the device is in a moving state or stopped state in advance, the system can determine the appropriate search timing and avoid unnecessary searches during temporary stops, thus reducing power consumption while maintaining communication availability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors the movement state through the acceleration sensor and uses this feedback to dynamically control the base station search behavior. When the device is detected to be stopped, the system waits for a predetermined time period before initiating a search, and cancels the search if movement is detected during the waiting period. This feedback mechanism ensures power-efficient operation while maintaining reliable communication.

Inventive Principle:

Principle #23Feedback

2Use of energy by moving object

If the device waits for a predetermined time before searching when stopped, then power consumption is reduced by avoiding temporary searches, but communication response time may increase

Engineering Contradiction:

Improvepower consumptionVSAvoidcommunication response time

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The system dynamically adjusts the base station search timing based on the detected movement state. When the device is stopped, it implements a waiting period before searching to avoid temporary searches during transient stops. However, if movement is detected during the waiting period, the system immediately cancels the search and initiates it upon movement cessation. This dynamic approach balances power consumption reduction with acceptable communication response time.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If the device continuously monitors movement state, then base station search accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvemovement detection accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The acceleration sensor serves multiple functions: it detects movement state for base station search control, determines whether the device is stopped or moving, and provides data for timing decisions. By making the sensor multi-functional, the system achieves accurate movement detection without adding separate complex monitoring systems, thus improving measurement precision while controlling device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables efficient and automatic data communication by accurately determining device states and timing base station searches, reducing power usage and enhancing user convenience by avoiding unnecessary searches during temporary stops.

Implementation Method 1

an acceleration sensor configured to detect a magnitude of an acceleration and a direction of the acceleration

Methodology Applied

Scientific EffectAcceleration detection: Accelerometer

Data Source

PatentUS9788267B2Mobile electronic device, control method, and recording medium thereof

Publication Date: 2017.10.10 KYOCERA CORP

AI summary

A mobile electronic device (e.g., mobile phone) includes an acceleration sensor, a communication module, and a controller. The controller detects a moving state of an own device based on an acceleration detected by the acceleration sensor. When detecting that the own device in the moving state is stopped, the controller causes the communication module to search for the base station after the lapse of a first period of time. When detecting that the own device in the moving state is stood still, the controller causes the communication module to search for the base station before the lapse of the first period of time.