Bluetooth Auto-Pairing Without BLE Using FHS and EIR Packets
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Solution Overview
Problem
Existing Bluetooth auto-pairing technologies require devices to support Bluetooth Low Energy (BLE) technology to transmit and parse advertising packets, making it difficult for devices without BLE support to implement auto-pairing functionality efficiently, and the process is complex, requiring mode switching and user intervention.
Innovation Solution
A Bluetooth communication system that uses an inquirer-side and requester-side device architecture, where both devices can perform auto-pairing without BLE support by transmitting Frequency Hop Synchronization (FHS) and Extended Inquiry Response (EIR) packets through an inquiry scan mode, simplifying the pairing process and eliminating the need for mode switching and user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If Bluetooth devices use traditional auto-pairing technologies with advertising packets, then auto-pairing functionality can be achieved, but the devices must support Bluetooth Low Energy (BLE) technology and switch to particular operation modes, increasing device complexity and procedure time
Solution Approach 1:
The patent extracts the auto-pairing capability from the BLE-specific advertising packet mechanism and implements it using traditional Bluetooth BR/EDR inquiry and page procedures. This allows devices without BLE support to perform auto-pairing by extracting the essential pairing information exchange function from the BLE advertising packet framework and implementing it through traditional Bluetooth packet types.
Solution Approach 2:
Instead of requiring devices to switch to BLE advertising packet modes for auto-pairing, the patent inverts the approach by implementing auto-pairing functionality within the traditional Bluetooth inquiry and page procedures. The requester-side device includes auto-pairing information in its EIR packet during the standard inquiry response, eliminating the need for mode switching while achieving automated pairing.
2Extent of automation
If Bluetooth devices support BLE technology to transmit and parse advertising packets, then auto-pairing can be implemented, but devices without BLE support cannot efficiently implement auto-pairing functionality
Solution Approach 1:
The patent makes the inquiry response packet serve multiple functions: it not only provides standard Bluetooth device information but also carries auto-pairing capability indicators and requests. The EIR packet is enhanced to include additional data fields that enable automated pairing decisions without requiring BLE technology, making the traditional Bluetooth protocol universally applicable for both manual and automated pairing scenarios.
3Reliability
If devices conduct auto-pairing procedure with mode switching and user intervention, then pairing can be completed, but the time required exceeds the requirement for shorter pairing periods
Solution Approach 1:
The requester-side device performs preliminary actions by including auto-pairing request information in its EIR packet during the initial inquiry response phase. This allows the inquirer-side device to make automated pairing decisions immediately upon receiving the EIR packet, without requiring subsequent user intervention or additional mode switching steps, thereby significantly reducing the overall pairing time while ensuring reliable pairing completion.
Data Source
AI summary
A Bluetooth communication system includes: an inquirer-side Bluetooth device arranged to operably generate and transmit a Bluetooth inquiry request; and a requester-side Bluetooth device arranged to operably receive and parse the Bluetooth inquiry request, and to operably generate and transmit a Frequency Hop Synchronization (FHS) packet containing a requester-side Bluetooth address and an Extended Inquiry Response (EIR) packet containing an auto-pairing request to the inquirer-side Bluetooth device. The inquirer-side Bluetooth device conducts an auto-pairing procedure with the requester-side Bluetooth device according to the contents of FHS packet and the EIR packet, but at least one of the inquirer-side Bluetooth device and the requester-side Bluetooth device does not support Bluetooth Low Energy (BLE) technology.