Periodic Advertisement Synchronization for BLE Audio Handover
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Solution Overview
Problem
Existing Bluetooth low energy (BLE) communication systems face challenges in efficiently managing audio service handovers between devices, leading to increased power consumption and user discomfort due to prolonged intervals between audio service transitions.
Innovation Solution
The electronic device employs communication circuitry for BLE, a speaker, and processor-controlled operations to synchronize with a periodic advertisement of an external device, allowing seamless handovers between audio services by maintaining synchronization to the periodic advertisement while ceasing or resuming synchronization to a broadcast isochronous stream based on requests or signals from other devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device continuously synchronizes to both periodic advertisement and broadcast isochronous stream (BIS) during audio service handover, then audio service continuity is maintained, but power consumption increases
Solution Approach 1:
The electronic device performs preliminary actions by maintaining synchronization to the periodic advertisement of the second external device before the audio service handover is triggered. When a handover request or signal is received, the device can immediately switch to the new audio service without interruption, as the synchronization infrastructure is already in place. This preliminary synchronization setup enables seamless handover while allowing the device to power down unnecessary components during stable operation, thus reducing overall power consumption.
Solution Approach 2:
The electronic device dynamically adjusts its synchronization state based on the audio service handover requirements. During normal operation, the device synchronizes only to the periodic advertisement to conserve power. Upon receiving a handover request or signal, the device dynamically transitions to synchronize with the broadcast isochronous stream (BIS) of the new external device, ensuring continuous audio service. This dynamic state adjustment resolves the contradiction by optimizing power consumption while maintaining service continuity.
2Ease of operation
If the electronic device quickly transitions between audio services, then user discomfort is reduced, but synchronization management complexity increases
Solution Approach 1:
The electronic device performs preliminary synchronization to the periodic advertisement of the target external device before the actual audio service switch occurs. This advance preparation ensures that when the handover is triggered by a request or signal, the transition can happen immediately without interruption or user-perceptible delay. The preliminary action simplifies the handover process by pre-establishing the synchronization infrastructure, reducing the complexity of real-time switching while ensuring smooth user experience.
Solution Approach 2:
The periodic advertisement serves as an intermediary mechanism that facilitates smooth audio service handovers. By maintaining synchronization to this intermediate periodic signal, the electronic device creates a stable reference point that simplifies the transition between different audio services. The periodic advertisement acts as a mediator that coordinates the handover process, allowing the device to switch services quickly without complex real-time synchronization management, thus improving user comfort while managing complexity.
3Speed
If the electronic device maintains synchronization to periodic advertisement during audio service handover, then handover speed is improved, but communication resource usage increases
Solution Approach 1:
The electronic device performs preliminary synchronization to the periodic advertisement of the target external device before the audio service handover is initiated. This advance preparation ensures that when the handover request or signal is received, the device can immediately switch to the new audio service without interruption. The preliminary action enables fast handover by pre-establishing the synchronization infrastructure, while allowing the device to minimize communication resource usage during stable operation by only maintaining necessary synchronization.
Solution Approach 2:
The electronic device utilizes periodic advertisement synchronization as a rhythmic, predictable communication pattern that optimizes resource usage. By synchronizing to periodic advertisements rather than continuous streams, the device can efficiently manage communication resources by activating synchronization only at predetermined intervals. This periodic approach enables fast handover when needed while minimizing overall communication resource consumption during stable audio service operation.
Data Source
AI summary
An electronic device is provided. The electronic device is configured to, based on synchronizing, in accordance with synchronizing to a periodic advertisement of a second external electronic device indicated by information from a first external electronic device, to a broadcast isochronous stream (BIS) from the second external electronic device, provide a first audio service outputting audio via a speaker, while the first audio service is provided, receive, from the first external electronic device, a request that ceases the synchronizing to the BIS and maintains the synchronizing to the periodic advertisement, and, while providing a second audio service based on data received from the first external electronic device, cease the synchronizing to the BIS and maintain the synchronizing to the periodic advertisement.