Broadcast Audio Metadata Channels for Multi-Device Bluetooth
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Solution Overview
Problem
Conventional Bluetooth audio technologies are inadequate for supporting audio data transmission/reception between multiple devices, leading to issues such as increased power consumption for device discovery, lack of methods for calculating call duration, providing metadata for audio data characteristics, and controlling device groups, and dynamic profile/service controller changes.
Innovation Solution
A method and apparatus for transmitting and receiving metadata associated with broadcast audio data using separate channels, calculating call duration across multiple devices, and dynamically controlling device groups through lock requests and responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional Bluetooth audio technology is used for one-to-one connection, then device compatibility is maintained, but support for multi-device audio transmission and complex topologies like 5.1 channel environments is insufficient
Solution Approach 1:
The patent implements a universal audio transmission framework that supports multiple connection topologies (one-to-one, one-to-many, many-to-many) and various channel configurations (stereo, 5.1 surround sound) through a single standardized protocol. The audio data transmission method can dynamically adapt to different device roles (audio source, audio sink, relay device) and connection scenarios, eliminating the need for separate protocols for each topology type.
2Adaptability or versatility
If the number of Bluetooth audio devices increases to support multi-device connections, then audio transmission capability is improved, but power consumption for searching for peripheral devices increases
Solution Approach 1:
The patent implements preliminary device discovery and grouping mechanisms where devices are identified and organized into logical groups before audio transmission begins. Relay devices are pre-configured to handle audio routing, and device information is cached for reuse in subsequent transmission sessions. This preliminary setup reduces the need for continuous device searching during audio playback, significantly lowering power consumption while maintaining multi-device connectivity.
3Ease of manufacture
If conventional Bluetooth protocols are used, then implementation simplicity is maintained, but protocols for metadata transfer, call duration calculation, and device control are missing
Solution Approach 1:
The patent combines audio data transmission with metadata transfer by integrating metadata packets into the existing audio transmission protocol. Metadata (including call duration information, audio characteristics, and device control commands) is transmitted alongside audio data using the same communication channels and packet structures. This merging approach enables comprehensive information exchange without requiring separate communication protocols, maintaining implementation simplicity while preventing information loss.
Data Source
AI summary
The present disclosure relates to a method, a device, a computer program, and a recording medium for audio processing in a wireless communication system. A method for transmitting metadata related to broadcast audio data in a Wireless communication system according to one embodiment of the present disclosure comprises the steps of: transmitting a first pointer packet including one or more pieces of metadata in a first channel, and transmitting an audio packet including one or more pieces of broadcast audio data related to the one or more pieces of metadata on a second channel indicated by the first pointer packet, wherein each of the one or more pieces of metadata may include information indicating a characteristic of one piece of broadcast audio data related to said piece of metadata.