Bluetooth Headset Ring Tone Playback Without HFP-A2DP Lag
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Solution Overview
Problem
The phenomenon of lag in the incoming call ring tone occurs when a mobile phone establishes a connection with a Bluetooth headset due to the faster registration of the Advanced Audio Distribution Profile (A2DP) compared to the Hands-Free Profile (HFP), causing suspension of audio data transmission during the switching process.
Innovation Solution
The mobile phone prioritizes establishing the Hands-Free Profile (HFP) connection first, followed by the Advanced Audio Distribution Profile (A2DP) connection, ensuring real-time audio transmission for the incoming call ring tone through HFP, thereby avoiding lag and improving user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the mobile phone registers A2DP before HFP, then the registration process is faster, but the incoming call ring tone transmission experiences lag
Solution Approach 1:
The patent applies preliminary action by pre-registering both A2DP and HFP profiles before the incoming call arrives. Specifically, the system registers HFP in advance during the call service preparation phase, ensuring that when the incoming call ring tone needs to be transmitted, the HFP profile is already registered and ready, eliminating the registration delay and preventing ring tone lag.
2Reliability
If the mobile phone switches from A2DP to HFP for real-time audio transmission, then call quality is improved, but audio data transmission is suspended during switching
Solution Approach 1:
The patent applies preliminary action by pre-establishing the HFP profile registration and preparing the real-time audio transmission path before the incoming call arrives. This ensures that when switching from A2DP to HFP is needed, the HFP profile is already registered and the transmission path is ready, avoiding suspension of audio data transmission during the switching process.
3Reliability
If the mobile phone establishes HFP connection first, then real-time audio transmission is ensured, but the registration sequence becomes more complex
Solution Approach 1:
The patent applies dynamics by implementing a dynamic registration sequence that adapts to different service types. The system determines whether to prioritize A2DP or HFP registration based on the incoming service request - for call services, HFP is registered first; for multimedia services, A2DP is registered first. This dynamic approach ensures real-time transmission reliability when needed while managing registration sequence complexity through context-aware decision-making.
Data Source
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AI summary
This application relates to the field of Bluetooth technologies, and in particular, to a communication method, a storage medium, and an electronic device. In the communication method disclosed in this application, a mobile phone completes registrations of a hands-free profile (HFP) and an advanced audio distribution profile (A2DP) in an initialization phase. During an incoming call of the mobile phone, the mobile phone establishes an HFP connection with a Bluetooth headset. An incoming call ring tone of the mobile phone is played by the Bluetooth headset through the HFP. Then, the mobile phone establishes an A2DP connection with the Bluetooth headset. In this way, the incoming call ring tone of the mobile phone is played by the Bluetooth headset through the HFP, so that a phenomenon of lag of the incoming call ring tone is avoided when playing of the incoming call ring tone of the mobile phone by the Bluetooth headset through the A2DP is switched to playing of the incoming call ring tone of the mobile phone by the Bluetooth headset through the HFP, and call experience of a user is improved.