Bluetooth Hearing Aid Pairing Using Scan Response Identification
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Solution Overview
Problem
Electronic devices face difficulties in connecting to Bluetooth hearing aids due to the absence of device type and left/right ear identifier information in notification packets, leading to inaccurate recognition and cumbersome connection processes.
Innovation Solution
The method involves determining the device type and left/right ear identifier using additional information from scan response frames or historical connection data, and displaying corresponding icons to facilitate connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the notification packet does not include device type and left/right ear identifier information, then the connection process becomes simpler and faster, but the electronic device cannot accurately recognize the Bluetooth hearing aid device type
Solution Approach 1:
The patent introduces scan response frames as an intermediary data structure that carries additional device identification information. When the notification packet lacks device type or left/right ear identifier fields, the electronic device uses the scan response frame as a fallback source to obtain these critical identification parameters, enabling accurate device recognition without extending the connection timeline.
2Speed
If the electronic device relies solely on notification packet information for device recognition, then the data processing is faster, but the recognition accuracy decreases when fields are missing
Solution Approach 1:
The patent implements preliminary action by pre-establishing a hierarchical data validation mechanism. The electronic device is configured to first attempt rapid recognition using notification packet fields, and if those fields are absent or insufficient, it automatically proceeds to extract the required device type and ear identifier information from the scan response frame, ensuring reliable recognition without significant speed penalty.
3Measurement precision
If additional information fields are added to the notification packet, then device type recognition becomes more accurate, but the packet size and processing complexity increase
Solution Approach 1:
The patent applies segmentation by dividing device identification information into two separate data structures: the notification packet for primary connection initiation and the scan response frame for supplementary device characteristics. This segmentation allows the system to maintain fast initial connection processing while providing access to complete device identification data when needed, without forcing all devices to carry the same data fields in the same location.
Data Source
AI summary
This application provides a method for connecting a Bluetooth hearing aid. After receiving a BLE broadcast packet sent by a peripheral device, if a notification packet does not include first information and second information, determining a device type of the peripheral device based on third information in a scan response frame or fourth information, where the first information and the second information are respectively configured to indicate the device type and a left-ear identifier or a right-ear identifier, the third information is at least one piece of information indicating the device type and information indicating the left-ear identifier or the right-ear identifier, and the fourth information is located in the notification packet and/or the scan response frame and configured to indicate a service supported by the peripheral device; and if the device type of the peripheral device is a Bluetooth hearing aid, connecting the Bluetooth hearing aid.