Control-Device Optical Wake-Up for Low-Power Remote Devices
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Solution Overview
Problem
The increasing number of components in network devices due to evolving network communication standards leads to significant power consumption, necessitating energy-saving optimization.
Innovation Solution
A communication method using optical signals to wake up remote devices based on specific parameters, reducing the overhead of parsing wake-up indications and allowing devices to power off more components, thereby improving energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network devices continuously maintain communication links for bidirectional communication, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic wake-up signals sent over optical fibers to activate remote devices from low-power states. Instead of maintaining continuous communication links, the system uses periodic activation signals that wake up remote devices only when needed, thereby maintaining communication reliability while significantly reducing energy consumption during idle periods.
Solution Approach 2:
The remote device autonomously transitions between active and low-power states based on received optical signals. The device can independently determine when to wake up and when to enter energy-saving mode without requiring continuous monitoring by the control device, enabling self-managed energy optimization while maintaining communication availability.
2Ease of operation
If remote devices parse wake-up indications from optical signals, then wake-up functionality is achieved, but processing overhead increases
Solution Approach 1:
The patent modifies the optical signal parameters (wavelength, intensity, or temporal characteristics) to encode wake-up indications. By changing physical parameters of the optical signal rather than using complex data protocols, the remote device can detect wake-up commands through simple optical parameter monitoring, reducing parsing overhead while maintaining functional capability.
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
This approach reduces energy consumption by minimizing the need for continuous communication links and enabling devices to power off unnecessary components, enhancing energy-saving effects.
Implementation Method 1
The control device transmits a first optical signal to a first remote device, where a parameter corresponding to the first optical signal is for waking up the first remote device
Data Source
AI summary
A communication method and a related device to wake up a remote device based on a parameter corresponding to an optical signal. In addition, when the remote device does not continuously keep alive a communication link for bidirectional communication between the remote device and a control device, the remote device can still be woken up at any time. In the method, the control device transmits a first optical signal to a first remote device, where a parameter corresponding to the first optical signal is for waking up the first remote device. In some implementations, the parameter corresponding to the first optical signal includes at least one of the following: optical signal strength or loss of signal (LOS) detection.