Bluetooth Dual-Transmit Packet Loss Error Correction via Link Forwarding
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Solution Overview
Problem
Dual-wireless Bluetooth audio communication in dual-transmit mode is affected by environmental changes and human interference, leading to poor data reception performance and reduced communication distance, which impacts user experience.
Innovation Solution
A packet loss data error correction method and apparatus that enables data exchange between two Bluetooth playing devices and an audio source device by establishing information exchange links, configuring devices to listen on each other's communication links, and using forwarding requests to ensure audio data is received when not received directly, leveraging space diversity to improve signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If dual-transmit mode is used for Bluetooth audio communication, then power consumption is reduced and audio bit rate is optimized, but communication distance decreases and reliability deteriorates due to environmental changes and human interference
Solution Approach 1:
The patent combines dual-transmit mode with listening and forwarding mechanisms, where one Bluetooth playing device can receive audio data directly from the audio source while the other device listens to and forwards the same audio data. This merging of reception modes ensures that at least one device reliably receives audio data even when one communication link is interfered with, thereby improving communication reliability while maintaining the power efficiency benefits of dual-transmit mode
Solution Approach 2:
The patent introduces a forwarding mechanism where one Bluetooth playing device acts as an intermediary to relay audio data to the other device. When direct communication on one link is blocked by environmental factors or human interference, the intermediary device forwards the audio data through an alternative path, ensuring reliable delivery without requiring both direct links to be simultaneously functional
2Productivity
If dual-transmit mode is used for Bluetooth audio communication, then audio data transmission is optimized, but communication distance is reduced due to human interference and environmental changes
Solution Approach 1:
The patent adds a temporal dimension to audio data transmission by implementing asynchronous listening and forwarding operations. Instead of relying solely on simultaneous direct reception, devices can receive audio data at different times and forward it asynchronously, creating multiple transmission opportunities that extend the effective communication distance and reduce susceptibility to intermittent interference
3Adaptability or versatility
If standard Bluetooth protocol is used for dual-wireless audio communication, then protocol compatibility is maintained, but communication quality deteriorates under environmental interference
Solution Approach 1:
The patent implements dynamic switching between direct reception and forwarded reception modes based on real-time communication conditions. Devices can adaptively change their reception strategy, switching from direct audio data reception to forwarded reception when interference is detected, thereby maintaining protocol compatibility while dynamically optimizing communication quality according to environmental conditions
Data Source
AI summary
This application discloses a packet loss data error correction method and apparatus in dual-transmit mode, a device, and a system. The method includes: step S100: driving a first Bluetooth playing device to establish an information exchange link with a second Bluetooth playing device; step S200: controlling the first Bluetooth playing device to exchange link information with the second Bluetooth playing device; step S300: controlling the first Bluetooth playing device to receive first current audio data that is sent to the first Bluetooth playing device by an audio source device; step S400: sending a first forwarding request to the second Bluetooth playing device a preset time interval after a local link subevent anchor; and step S500: receiving the first current audio data that is forwarded by the second Bluetooth playing device. It can improve communication quality of dual Bluetooth playing devices.