Bluetooth Low Energy Connection Control via Advertising Messages
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Solution Overview
Problem
The complexity of connection, management, and disconnection among Bluetooth devices, especially those without a user interface, increases due to varied user interfaces and the need for simplified inter-device communication using Bluetooth low energy (BLE) technology.
Innovation Solution
A method for forming connections between devices using BLE technology, involving receiving advertising messages, establishing connections, and controlling operations through a control device, which includes transmitting write requests for connection and operational state information, and managing bonding and security procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Bluetooth Classic (BR/EDR) method is used for device connection, then connection stability and data transfer reliability are improved, but power consumption increases and transmission distance is limited to 100m
Solution Approach 1:
The patent transitions from Bluetooth Classic (BR/EDR) to Bluetooth Low Energy (BLE) technology, changing key parameters including power consumption mode, connection establishment protocol, and data transmission mechanism. BLE uses advertising channels for discovery and connection requests, fundamentally altering how devices interact compared to Classic Bluetooth's inquiry and pairing procedures.
2Adaptability or versatility
If devices without user interface are connected using traditional Bluetooth methods, then device compatibility is improved, but connection management complexity increases due to varied user interfaces
Solution Approach 1:
The patent implements automated connection management where the control device autonomously performs discovery, pairing, and connection establishment without requiring user intervention through physical interfaces. The system uses automated authentication protocols and background processing to manage connections, eliminating the need for users to manually navigate different device interfaces.
Solution Approach 2:
The control device acts as an intermediary between devices without user interfaces, managing the connection protocol and authentication processes. It mediates the communication between slave devices, handling the complexity of pairing and connection management centrally rather than requiring each device to have its own user interface.
3Ease of operation
If multiple devices perform independent connection discovery and pairing, then device autonomy is improved, but connection establishment time increases
Solution Approach 1:
The control device performs preliminary actions by pre-discovering available slave devices and pre-establishing connection parameters before actual data transmission is needed. Devices register themselves with the control device in advance, and connection profiles are pre-configured, allowing rapid connection establishment when needed without full discovery and pairing procedures.
Data Source
AI summary
Disclosed are a method and apparatus for forming a connection between devices using a Bluetooth low energy (BLE) technology. The method for forming a connection between a first device and a second device using BLE includes receiving an advertising message including information related to a pairing control service from the first device, establishing a Bluetooth connection with the first device based on the advertising message, transmitting a first write request message requesting writing of connection request information indicating transmission of a connection request message to the second device included in pairing control point information through Bluetooth, and receiving a first indication message including connection state information indicating a state of a connection with the second device from the first device, wherein the pairing control point indicates information instructing the first device to perform a specific operation.