Wireless Device Interface Module Power Save Mode
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Solution Overview
Problem
Wireless devices in power save mode continue to consume power from the host even when not being utilized, as they cannot be powered down prior to initialization, leading to inefficient power conservation in wireless networks.
Innovation Solution
A method where a wireless device assembly receives a clock signal from the host and uses it to operate an interface module during power save mode, detecting initialization and I/O enable commands to activate necessary components, allowing the device to transition back to power save mode when idle, with the interface module remaining operational.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If wireless devices are placed in power save mode during periods of non use, then power consumption is reduced, but the device cannot be powered down prior to initialization and continues to consume power from the host
Solution Approach 1:
The patent segments the wireless device into two functional parts: an interface module that remains operational to detect commands, and the main wireless device functionality that can be powered down. This segmentation allows the device to enter a deeper power save mode while maintaining the ability to be woken up by command detection, thus resolving the contradiction between reducing power consumption and avoiding energy waste from unnecessary operation.
2Ease of operation
If the wireless device remains in active mode to detect commands, then command detection capability is maintained, but power consumption increases
Solution Approach 1:
The patent extracts the command detection function from the main wireless device and assigns it to a separate interface module. This extracted interface module can operate with minimal power consumption while the main device remains in a low-power state. When commands are detected by the interface module, the main device is then activated, thus maintaining command detection capability while significantly reducing overall power consumption.
3Productivity
If the interface module operates independently during power save mode, then power management efficiency is improved, but device complexity increases
Solution Approach 1:
The interface module is designed to perform multiple functions: it serves as both the command detection mechanism and the wake-up trigger for the main device. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while achieving improved power management efficiency through independent operation during power save mode.
Data Source
AI summary
In a method for controlling a wireless device assembly coupled to a host assembly, a clock signal is received at the wireless device assembly from the host assembly. The clock signal is supplied to an interface module in the wireless device assembly during a power save mode of the wireless device assembly and is used to operate the interface module. An initialization command is received at the wireless device assembly from the host assembly and is detected with the interface module. In response to detecting the initialization command, at least a portion of the wireless device assembly, other than the interface module, is activated.