Communication Unit State Transition for IoT Power Reduction
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Solution Overview
Problem
Terminal devices in IoT systems often experience high power consumption during the start-up state, which hinders the effectiveness of idle states aimed at reducing power consumption. This issue arises because terminal devices frequently transition between idle and operating states, resulting in frequent start-up states and increased power usage.
Innovation Solution
A communication device with a control unit that switches the communication unit from an idle state to an operating state based on signal reception timing, transmits signals while in the operating state, and then switches back to the idle state after signal transmission/reception. This approach minimizes the duration of high-power start-up states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device frequently transitions from idle state to operating state to maintain communication readiness, then the communication availability is improved, but the power consumption increases due to frequent start-up states
Solution Approach 1:
The patent applies preliminary action by having the terminal device perform start-up procedures in advance before actual communication is needed. The device transitions to the operating state ahead of time so that when communication is required, it can immediately begin without going through the high-power start-up state again, thus reducing power consumption while maintaining communication availability.
Solution Approach 2:
The patent implements dynamics by making the state transition timing flexible and adaptive. Instead of fixed idle-to-operating transitions, the system dynamically adjusts when the terminal device enters operating state based on predicted communication needs, allowing optimization between communication availability and power consumption based on real-time conditions.
2Use of energy by moving object
If the terminal device remains in idle state to reduce power consumption, then the power consumption is reduced, but the response time for signal reception increases
Solution Approach 1:
The terminal device performs start-up actions in advance before actual signal reception is needed. By transitioning to the operating state beforehand, the device ensures that when signals arrive, it is already ready to process them immediately, thus reducing the effective response time while maintaining low power consumption during the idle period.
Solution Approach 2:
The system uses feedback mechanisms to monitor communication conditions and adjust state transitions accordingly. When the terminal device detects incoming signals or predicts their arrival, it can transition from idle to operating state in response, optimizing the balance between power savings and response time based on actual communication needs.
Data Source
AI summary
A communication device includes a communication unit that transmits and receives a signal to and from another communication device and a control unit that switches the communication unit from an idle state to an operating state by a reception timing of the signal, causes the communication unit to transmit the signal while the communication unit is in the operating state, and switches the communication unit from the operating state to the idle state after transmission/reception of the signal is performed.