Bluetooth Group Communication via BLE Discovery and Time Division
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Solution Overview
Problem
Bluetooth technology limitations in forming groups for transmitting and receiving voice data among multiple devices, managing group configurations, and securely connecting devices for efficient data exchange are not adequately addressed, particularly in scenarios requiring low power consumption and short-range communication.
Innovation Solution
A method and device for forming groups using Bluetooth technology, where a first device generates a group, exchanges configuration information, forms a Bluetooth connection using a broadcasting channel or time division scheme, and transmits/receives voice data securely through identity resolving keys and encryption keys, allowing for simultaneous connections and group management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Bluetooth Classic method is used for device connection, then connection reliability is improved, but power consumption increases
Solution Approach 1:
The patent segments the connection process into two distinct phases: initial connection using Bluetooth Low Energy (BLE) for low-power device discovery and pairing, then transitioning to Bluetooth Classic for reliable voice data transmission. This segmentation allows each protocol to be used where it is most effective, resolving the contradiction between connection reliability and power consumption.
2Adaptability or versatility
If group communication is implemented among multiple devices, then communication versatility is improved, but device complexity increases
Solution Approach 1:
The patent introduces a master device as an intermediary that manages group configuration and coordinates communication among multiple slave devices. The master device handles complex group management tasks including configuration information distribution and connection coordination, thereby reducing the complexity burden on individual slave devices while enabling versatile group communication.
3Productivity
If simultaneous connections to multiple devices are established, then productivity is improved, but connection management complexity increases
Solution Approach 1:
The patent employs periodic time-division multiplexing for simultaneous connections, where the master device establishes periodic connection events with multiple slave devices at different time intervals. This periodic action allows efficient parallel data exchange while simplifying connection management through structured, time-based scheduling rather than continuous complex coordination.
4Reliability
If encryption keys are exchanged for secure communication, then security is improved, but communication overhead increases
Solution Approach 1:
The patent performs encryption key exchange during the initial connection and pairing phase using BLE, before transitioning to voice data transmission. By completing the security setup in advance, the encryption overhead is incurred only once during connection establishment rather than continuously during data transmission, thus improving security while minimizing communication overhead.
Data Source
AI summary
The present invention relates to a method and device for transmitting and receiving, by a first device, data using Bluetooth. The present invention provides a method and device wherein the first device: generates a group for group communication with a plurality of devices; exchanges, with the plurality of devices, first configuration information of the group for the group communication; establishes Bluetooth connection to the plurality of devices on the basis of the first configuration information, the Bluetooth connection being established using a broadcasting channel or a time division technique for establishing simultaneous connection to the plurality of devices; and transmits and receives voice data to and from the plurality of devices by using a specific channel.