BLE Peripheral Advertising for Multi-Central Connectivity
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Solution Overview
Problem
The central/peripheral relationship between medical devices and smartphones using Bluetooth Low Energy (BLE) can prevent healthcare providers' devices from connecting with medical devices, especially when the patient's mobile device is nearby, leading to connectivity issues during data transfer.
Innovation Solution
The medical device broadcasts specialized advertising packets with data flags to increase the likelihood of connecting with the desired central device, such as a healthcare provider's device, by broadcasting low-power packets only within a specific threshold distance and using data flags to indicate the intended device type, allowing multiple central devices to connect reliably.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the patient's mobile device maintains a central/peripheral relationship with the medical device, then data transfer between patient and medical device is reliable, but healthcare provider devices cannot connect to the medical device
Solution Approach 1:
The patent implements dynamic advertising packet broadcasting where the medical device alternates between broadcasting packets with and without device type flags. This dynamic switching allows the device to maintain a primary central/peripheral relationship while periodically allowing connections from other device types, resolving the contradiction between connection reliability and multi-device adaptability
Solution Approach 2:
The patent applies different advertising packet characteristics to different connection scenarios. Packets broadcast without device type flags enable connections from any central device, while packets with specific device type flags restrict connections to particular device types. This local differentiation resolves the contradiction by providing different connection qualities for different device types
2Adaptability or versatility
If the medical device broadcasts advertising packets without device type flags, then any central device can connect, but the probability of connecting with the intended device decreases
Solution Approach 1:
The patent implements periodic broadcasting of advertising packets with alternating characteristics. The device broadcasts packets without device type flags during certain intervals to maintain general connectivity, then broadcasts packets with device type flags during other intervals to increase connection probability with intended devices. This periodic alternation resolves the contradiction between versatility and connection reliability
3Reliability
If the medical device broadcasts advertising packets with device type flags, then only specific devices can connect, but other central devices are blocked
Solution Approach 1:
The patent applies different advertising packet characteristics to different connection scenarios. Packets broadcast with device type flags enable selective connections from specific device types, while packets without flags allow connections from any central device. This local differentiation resolves the contradiction by providing different connection qualities for different device types
Solution Approach 2:
The patent implements dynamic switching between broadcasting packets with and without device type flags. This dynamic approach allows the medical device to adapt its advertising behavior based on connection needs, alternating between selective and open connection modes to resolve the contradiction between connection specificity and overall connectivity
Data Source
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AI summary
A peripheral device can connect with a desired central device by broadcasting advertisement packets with specialized data flags, which may be located in certain data fields. This can increase the probability that the peripheral device will connect with the desired central device by enabling other central devices to ignore these advertisement packets.