Bi-directional Wake Radio Interface for Peripheral Power Management
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Solution Overview
Problem
Current information handling systems face challenges with uni-directional peripheral wake-up mechanisms, leading to increased power consumption and delayed system responsiveness, as peripherals cannot awaken the system when it is in an off state, and vice versa, which affects battery life and user interaction efficiency.
Innovation Solution
A wireless interface module with a primary radio for user data communication and a secondary radio for wake protocol communication, allowing bi-directional low power mode interactions between peripherals and information handling systems, enabling peripherals to wake the system and vice versa, using a wake command to transition from a low power state to an active state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the radio is kept on for immediate communication readiness, then system responsiveness is improved, but power consumption increases
Solution Approach 1:
The patent segments the radio communication function into two distinct modes: a low-power sleep mode where the radio is off, and an active communication mode where the radio is on. The system can quickly transition between these segments based on communication needs, avoiding continuous operation while maintaining responsiveness when required.
Solution Approach 2:
The system performs preliminary actions by pre-configuring wake-up triggers and maintaining minimal system state during sleep mode. When a wake-up event occurs, the system can rapidly transition to full operation because essential parameters and communication protocols are pre-established, reducing the effective response time despite the radio being off during sleep.
2Duration of action of moving object
If the radio is turned off to save power, then battery life is improved, but system responsiveness deteriorates
Solution Approach 1:
The system implements periodic action through scheduled wake-up intervals and event-triggered activation. Instead of continuous operation, the radio periodically wakes up to check for communication needs or transitions to active mode upon receiving specific wake-up signals, achieving power savings while maintaining the ability to respond when necessary.
Solution Approach 2:
The patent introduces an intermediary wake-up mechanism that allows the system to remain in low-power state while still being able to respond to external events. The wake-up trigger acts as an intermediary signal that bridges the gap between the off state and active communication state, enabling rapid transition without continuous radio operation.
3Device complexity
If uni-directional peripheral wake-up is used, then device complexity is reduced, but adaptability deteriorates
Solution Approach 1:
The patent applies universality by designing a wake-up mechanism that serves multiple functions: it can be triggered by peripherals to wake the host, and by the host to wake peripherals. This multi-functional approach eliminates the need for separate wake-up circuits for each direction, reducing overall complexity while achieving bi-directional capability.
Solution Approach 2:
The system inverts the traditional wake-up architecture by allowing the host to actively wake peripherals, rather than only peripherals waking the host. This inversion creates a symmetric bi-directional system where either party can initiate wake-up, improving adaptability without significantly increasing complexity.
Data Source
AI summary
An information handling system wirelessly interfaces with plural peripheral devices, such as a keyboard or mouse, through primary radios that have a communication protocol, such as Bluetooth Low Energy or a wireless local area network. Secondary radios interface with their associated primary radio to provide a low power wake and sleep using wake and sleep signals sent between the secondary radios. An individual wake command is transmitted by a secondary radio to wake one peripheral or information handling system. A group wake command is transmitted by a secondary radio to wake plural peripherals and/or information handling system.