Bluetooth Low Energy Audio Streaming via Advertisement Messages
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Solution Overview
Problem
Bluetooth technology faces challenges in efficiently receiving and managing audio data, particularly in scenarios with multiple server devices, due to complexities in connection, management, and disconnection, especially when devices lack a display or user interface, and there is a need for simplified methods to determine which audio data to receive based on available information.
Innovation Solution
A method using Bluetooth Low Energy technology that involves receiving advertisement messages for audio streaming services, synchronization information, and indicators for grouped audio data, allowing clients to decode audio data based on user permission, with features like interleaving and grouping of audio data and information, and isochronous channels for efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If Bluetooth Classic (BR/EDR) method is used for audio data transmission, then transmission speed and audio quality are improved, but power consumption and device complexity increase
Solution Approach 1:
The patent combines Bluetooth Low Energy (BLE) technology with audio data transmission, merging the low power consumption characteristics of BLE with audio streaming capabilities. The system uses BLE advertisement messages to transmit audio data while maintaining low power consumption, thus resolving the contradiction between transmission speed and power consumption.
Solution Approach 2:
The patent changes the transmission parameters by using BLE advertising messages instead of traditional BR/EDR connections. By modifying the transmission mode to use isochronous channels and advertisement-based communication, the system achieves efficient audio data transmission with reduced power consumption compared to conventional Bluetooth Classic methods.
2Adaptability or versatility
If connection management is implemented for multiple Bluetooth devices, then audio data reception capability is improved, but device complexity and operational difficulty increase
Solution Approach 1:
The patent extracts the connection management overhead by using BLE advertisement messages for audio data transmission. Instead of requiring full Bluetooth Classic connection establishment and management for each audio stream, the system uses lightweight advertisement-based communication, thereby reducing device complexity while maintaining multi-device audio reception capability.
Solution Approach 2:
The patent segments audio data transmission into separate advertisement message streams from different server devices. Each advertisement message carries audio data with unique identifiers, allowing the client device to independently manage and select audio streams without complex connection management, thus simplifying the overall system while supporting multiple audio sources.
3Adaptability or versatility
If all audio data from multiple server devices is received, then audio data availability is improved, but power consumption and data processing load increase
Solution Approach 1:
The patent implements preliminary filtering of audio data by decoding and analyzing advertisement message information before full audio data reception. The client device examines audio data identifiers and metadata in advance to determine which audio streams to receive, preventing unnecessary power consumption from processing unwanted audio data while maintaining availability of desired streams.
Solution Approach 2:
The patent applies partial action by selectively receiving only specific audio data streams based on user preferences and device capabilities. Instead of receiving all available audio data from multiple server devices, the system decodes and processes only the necessary portions, reducing power consumption while maintaining adequate audio data availability for the user's needs.
Data Source
AI summary
A method for receiving audio data using Bluetooth Low Energy technology, the method performed by a client device comprising: receiving, from a server device, a first advertisement message including information for providing an audio streaming service; receiving, from the server device, a second advertisement message including synchronization information for synchronization between the client device and the server device; receiving, from the server device, a third advertisement message including an indicator representing that audio data of the audio streaming service is grouped with audio data information for the audio data and transmitted; receiving, from the server device, broadcast audio data including the grouped audio data and the audio data information based on the indicator, through an isochronous channel; obtaining, from an user, specific information related to whether to permit a provision of the audio streaming service based on the audio data information; anddecoding the audio data based on the specific information representing permission to provide the audio data.