LPWAN Device Operation Mode Switching for Power Management
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Solution Overview
Problem
Electronic devices used for location-based services face significant power consumption issues due to continuous GPS usage and communication, limiting their operational time.
Innovation Solution
An electronic device equipped with a communication circuit for LPWAN, a state sensing circuit to monitor movement, and a processor that adapts operation modes to minimize power consumption by switching between active and sleep states based on movement, transmitting messages only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous GPS and communication are used to provide location information, then location service reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic location information transmission instead of continuous transmission. The electronic device transmits location information at predetermined intervals when stationary, and activates transmission upon detecting movement. This periodic action maintains location service reliability by ensuring regular updates while significantly reducing power consumption compared to continuous GPS and communication operations.
2Productivity
If the electronic device transmits location information frequently, then service responsiveness is improved, but battery life decreases
Solution Approach 1:
The patent dynamically adjusts the location information transmission frequency based on the device's movement state. When the device is stationary, transmission occurs only at predetermined intervals or upon movement detection. When movement is detected, the device activates transmission to ensure service responsiveness. This dynamic adaptation maintains productivity while extending battery life by avoiding unnecessary frequent transmissions during stationary periods.
3Measurement precision
If communication and positioning functions are continuously activated, then service accuracy is improved, but energy loss increases
Solution Approach 1:
The patent uses the state sensing circuit to preliminarily detect device movement before activating the positioning and communication functions. When movement is detected, the processor subsequently activates GPS and communication to transmit location information. This preliminary detection approach ensures service accuracy by activating positioning only when necessary, while minimizing energy loss by avoiding continuous operation of power-intensive components.
Data Source
AI summary
Various embodiments of the present invention disclose a method and a device for managing an operation mode of an electronic device which uses a low power wide area network (LPWAN). According to various embodiments of the present invention, the electronic device comprises: a communication circuit for providing wireless communication by means of LPWAN; a state detection circuit for monitoring the movement of the electronic device; a location measuring circuit for detecting the location of the electronic device; a processor electrically connected to the communication circuit, the state detection circuit and the location measuring circuit; a memory electrically connected to the processor and storing instructions enabling the processor to transmit, using the communication circuit, at least one message including the location; and a battery for supplying power to the communication circuit, the state detection circuit, the location measuring circuit, the processor and the memory, wherein the electronic device may be configured so as to operate in one state among a first state or a second state on the basis of the monitored movement, wherein, in the first state, the electronic device transmits the message in intervals of a first time, and maintains the processor in a low-power or sleep mode during all other times, and in the second state, the processor is in the low-power or sleep mode, and after the monitored movement exceeds a threshold value during a first selected duration, the processor wakes up and transmits the message. In addition, various embodiments are possible.