Low-Power Wireless Beacon Detection for Energy-Efficient Pairing
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Solution Overview
Problem
Conventional wireless device pairing methods, such as Bluetooth, require devices to be fully powered to discover each other, leading to constant power drain and reduced battery life in mobile devices like laptops and smartphones.
Innovation Solution
A low-power wireless communication subsystem is used to detect beacons from connectable devices, powering on only when a suitable connection is detected, allowing the main system to conserve energy by remaining in a low-power state until a connectable device is discovered, and then activating a higher-power subsystem for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If devices use conventional wireless pairing methods (e.g., Bluetooth) to discover and connect to each other, then wireless connectivity and device pairing capability are improved, but power consumption increases and battery life decreases
Solution Approach 1:
The wireless communication subsystem is divided into two distinct parts: a low-power component for beacon transmission and reception, and a high-power component for full communication protocols. The low-power subsystem remains active continuously to detect beacons, while the high-power subsystem is activated only when a beacon warrants execution, thereby segmenting the power consumption across different operational states and resolving the contradiction between continuous connectivity capability and power conservation.
2Speed
If devices remain fully powered to enable immediate wireless discovery and pairing, then connection speed and pairing responsiveness are improved, but battery life and energy efficiency deteriorate
Solution Approach 1:
The low-power wireless communication component performs preliminary actions by continuously transmitting and detecting beacons without requiring the main device to be fully powered. This preliminary beacon exchange enables quick detection of nearby devices, and when a beacon warrants execution, the system is already primed to activate the high-power subsystem immediately, thus achieving fast pairing responsiveness without maintaining full power continuously.
Solution Approach 2:
The system employs periodic beacon transmission and detection cycles using the low-power subsystem, rather than maintaining continuous high-power operation. The low-power component periodically checks for beacons, and upon detecting a warranting beacon, triggers activation of the high-power subsystem. This periodic operation pattern maintains responsiveness while significantly extending battery life compared to continuous full-power operation.
Data Source
AI summary
An aspect provides a method, including: receiving, at a low power wireless communication subsystem of an information handling device, a beacon from a wirelessly connectable device; determining, with the low power wireless communication subsystem, if the received beacon warrants executing a communication protocol; in response to determining the received beacon warrants executing a communication protocol, powering on a main system component and a higher power wireless communication subsystem; and establishing a wireless connection between the higher power wireless communication subsystem and the wirelessly connectable device. Other aspects are described and claimed.