Bluetooth Reconnection via Coordinated BLE Advertising Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Bluetooth connections often fail to reconnect successfully due to page request collisions when both devices attempt to initiate paging simultaneously after a disconnection, leading to inefficiencies in reestablishing the connection.
Innovation Solution
A method where one device sends a BLE advertising signal indicating whether the other device should initiate paging, allowing them to coordinate their reconnection attempts and avoid collisions, by using specific AD structures in the advertising signals to manage the reconnection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both devices initiate paging simultaneously after disconnection, then reconnection can be attempted by both devices, but page request collisions occur causing connection failure
Solution Approach 1:
The patent applies preliminary action by having one device send a BLE advertising signal before initiating paging to indicate its reconnection intent. This allows the other device to know in advance whether it should initiate paging or wait, preventing simultaneous paging attempts and collisions. The advertising signal is sent beforehand to coordinate the reconnection process.
2Reliability
If devices continuously scan and send page packets to ensure reconnection, then reconnection reliability improves, but power consumption increases
Solution Approach 1:
The patent implements periodic action by having devices send BLE advertising signals at specific intervals rather than continuously scanning and paging. The advertising signal is transmitted periodically to indicate reconnection intent, and devices only initiate paging when the advertising signal indicates it's their turn, reducing continuous power consumption while maintaining reconnection reliability.
Data Source
AI summary
A BLUETOOTH reconnection method is used in a BLUETOOTH connection system that includes a first device and a second device. The method includes that the first device sends a BLUETOOTH Low Energy (BLE) advertising signal to the second device after a BLUETOOTH connection between the first device and the second device is disconnected. If the second device determines that the received BLE advertising signal is a first BLE advertising signal, the second device does not page the first device, and waits to receive a page packet sent by the first device. If the second device determines that the received BLE advertising signal is a second BLE advertising signal, the second device actively pages the first device, and the first device waits to receive a page packet sent by the second device.