BLE Audio Handover Using Periodic Advertisement Synchronization

Solution Overview

Problem

Existing Bluetooth low energy (BLE) devices 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 solution involves maintaining synchronization to a periodic advertisement of a second external device while transitioning between audio services, allowing devices to reduce the time interval between service handovers by continuing to synchronize to the periodic advertisement during the transition, thereby reducing power consumption and user discomfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the electronic device synchronizes to the broadcast isochronous stream (BIS) from the second external device, then audio service can be provided, but the time interval between audio service handovers increases and power consumption increases

Engineering Contradiction:

Improveaudio service continuityVSAvoidtime interval between service handovers

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The electronic device receives and stores periodic advertisement information from the second external device before the audio service handover is completed. This preliminary action allows the device to maintain synchronization capability during the transition period, reducing the time interval between service handovers and minimizing audio interruption.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The periodic advertisement information acts as an intermediary mechanism that bridges the first and second audio services. By synchronizing to this intermediate advertisement stream, the electronic device can smoothly transition between services without requiring continuous BIS synchronization, thereby reducing handover time and power consumption.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the electronic device synchronizes to the broadcast isochronous stream (BIS), then audio service can be provided, but power consumption increases

Engineering Contradiction:

Improveaudio service continuityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The electronic device receives and stores periodic advertisement information from the second external device before the audio service handover is completed. This preliminary action allows the device to maintain synchronization capability during the transition period, reducing the time interval between service handovers and minimizing audio interruption.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The periodic advertisement information acts as an intermediary mechanism that bridges the first and second audio services. By synchronizing to this intermediate advertisement stream, the electronic device can smoothly transition between services without requiring continuous BIS synchronization, thereby reducing handover time and power consumption.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Loss of time

If the electronic device maintains synchronization to periodic advertisement during audio service transition, then time interval between handovers is reduced, but device complexity increases

Engineering Contradiction:

Improvetime interval between service handoversVSAvoidsynchronization management complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The periodic advertisement information acts as an intermediary mechanism that bridges the first and second audio services. By synchronizing to this intermediate advertisement stream, the electronic device can smoothly transition between services without requiring continuous BIS synchronization, thereby reducing handover time and power consumption.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The electronic device automatically manages the synchronization process by utilizing the periodic advertisement information that is already being received from the second external device. The device self-adjusts its synchronization state during the handover without requiring external intervention or complex manual configuration, thereby reducing operational complexity.

Inventive Principle:

Principle #25Self-service

Data Source

PatentEP4701244A1Electronic device, method, and non-transitory computer-readable storage medium for handover of audio service

Publication Date: 2026.02.25 SAMSUNG ELECTRONICS CO LTD

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AI summary

The present invention relates to an electronic device for handover of an audio service. The electronic device is characterized by: providing a first audio service on the basis of synchronization with a broadcast isochronous stream (BIS) from a second external electronic device; while the first audio service is provided, receiving a request to stop the synchronization with the BIS and maintain synchronization with a periodic advertisement; and while providing a second audio service on the basis of data received from a first external electronic device, stopping the synchronization with the BIS and maintaining the synchronization with the periodic advertisement on the basis of the request.