BLE Audio Synchronization via Broadcast Isochronous Group Events
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Solution Overview
Problem
Existing Bluetooth low energy (BLE) communication systems face challenges in synchronizing audio signals between electronic devices, leading to increased latency and reduced quality due to the need for external assistance devices, which also limit bandwidth and time resources.
Innovation Solution
Electronic devices are equipped with processors and communication circuits to synchronize audio signals through broadcast isochronous group events, allowing direct packet transmission and reception without external assistance, thereby enhancing synchronization and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external assistance devices are used to synchronize audio signals between electronic devices, then synchronization can be achieved, but latency increases and bandwidth resources are limited
Solution Approach 1:
The patent extracts and eliminates the external assistance device from the audio synchronization system. Devices 101 and 102 directly exchange audio packets through their own communication circuits without requiring an external device to mediate the synchronization process, thereby reducing latency while maintaining synchronization reliability
Solution Approach 2:
The electronic devices perform audio signal synchronization autonomously using their own processors and communication circuits. Each device independently transmits and receives audio packets, manages timing synchronization, and coordinates broadcast operations without external assistance, enabling self-service synchronization that reduces latency
2Reliability
If external assistance devices are used to synchronize audio signals, then synchronization is possible, but device complexity and resource requirements increase
Solution Approach 1:
The external assistance device is removed from the system architecture. The patent shows devices 101 and 102 directly connected through communication circuits, eliminating the need for external mediation infrastructure and reducing overall system complexity
Solution Approach 2:
Each electronic device is designed to perform multiple functions independently: audio signal acquisition, packet encoding, timing synchronization, and wireless transmission. This multi-functionality eliminates the need for specialized external synchronization devices, reducing system complexity while maintaining reliability
3Adaptability or versatility
If traditional Bluetooth communication is used for audio transmission, then connectivity is maintained, but bandwidth and time resources are insufficient for high-quality synchronization
Solution Approach 1:
The patent implements dynamic resource allocation for audio packet transmission. The system adjusts transmission parameters, packet sizes, and timing intervals based on real-time channel conditions and synchronization requirements, enabling efficient bandwidth utilization that adapts to varying quality requirements while maintaining compatibility
Solution Approach 2:
The system changes communication parameters including transmission power, packet duration, and timing synchronization values to optimize bandwidth utilization. By dynamically adjusting these parameters, the system achieves high-quality audio synchronization with efficient resource usage while maintaining compatibility with existing Bluetooth infrastructure
Data Source
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AI summary
A first electronic device is provided. The first electronic device may comprise a microphone, a communication circuit, and at least one processor including a processing circuit. The at least one processor may be individually and/or collectively configured to: identify a request for a broadcast service for providing a first audio signal acquired through the microphone of the first electronic device and a second audio signal acquired through a microphone of a second electronic device to at least one external electronic device around the first electronic device and the second electronic device, on the basis of synchronization between the first audio signal and the second audio signal; and according to the request, transmit information on a broadcast isochronous group (BIG) event including a first broadcast isochronous stream (BIS) event for the first electronic device and a second BIS event for the second electronic device to the second electronic device by using the communication circuit.