Primary-Earbud Packet Relay for Voice Quality and Device Latency
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Solution Overview
Problem
Existing wireless communication systems for true wireless earbuds experience poor voice call quality and device latency due to varying link conditions, leading to inefficient bandwidth utilization and user experience issues with accessory devices during voice calls.
Innovation Solution
Implementing a communication technique where the primary earbud acknowledges successful reception of voice packets and transmits data packets to the secondary earbud when the secondary earbud fails to intercept, ensuring multiple opportunities for packet reception and reducing bandwidth utilization at the source device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the source device transmits voice packets multiple times to ensure reception, then voice call quality improves, but bandwidth utilization deteriorates and accessory device latency increases
Solution Approach 1:
The primary earbud acts as an intermediary that receives voice packets from the source device and selectively retransmits them to the secondary earbud. This mediator approach allows the system to ensure reliable delivery to both earbuds without requiring the source device to continuously retransmit packets, thereby improving voice call quality while optimizing bandwidth utilization.
Solution Approach 2:
The primary earbud performs preliminary reception of voice packets from the source device before they are needed by the secondary earbud. By having the primary earbud already possess the packets in advance, the system can quickly retransmit them to the secondary earbud without requiring multiple transmissions from the source device, thus improving reliability while reducing bandwidth consumption.
2Reliability
If the source device continuously transmits packets to the primary earbud, then the primary earbud maintains reliable reception, but bandwidth is wasted when the secondary earbud cannot intercept packets
Solution Approach 1:
The primary earbud serves as an intermediary that receives packets from the source device and conditionally retransmits them to the secondary earbud based on whether the secondary earbud successfully intercepted the original transmission. This intermediary function eliminates wasted bandwidth by avoiding unnecessary retransmissions from the source device while maintaining reliable packet delivery to both earbuds.
Solution Approach 2:
The system implements feedback mechanisms where the primary earbud monitors whether the secondary earbud successfully received packets and adjusts its retransmission behavior accordingly. This feedback-driven approach ensures that bandwidth is only consumed when necessary, improving both packet reception reliability and bandwidth efficiency.
3Reliability
If the system uses separate wireless links for voice packets and accessory devices, then voice call reliability improves, but device complexity increases
Solution Approach 1:
The system segments communication into different wireless links: one link between the source device and primary earbud for receiving voice packets, and another link between the primary earbud and secondary earbud for selective retransmission. This segmentation allows voice call reliability to be maintained through dedicated communication paths while managing complexity through clear separation of communication functions.
Solution Approach 2:
The primary earbud performs multiple functions using its wireless communication capabilities: it receives voice packets from the source device, processes them, and selectively retransmits them to the secondary earbud. This multi-functionality approach maintains voice call reliability without requiring additional separate hardware systems, thereby managing device complexity effectively.
Data Source
AI summary
Features described herein generally relate to systems and methods for improving voice call quality and device latency. A communication technique is disclosed in which a primary earbud of a set of earbuds acknowledges successful reception of the voice packet from a source device and transmits a data packet to a secondary earbud of set of earbuds when the secondary earbud is unable to successfully intercept and/or acquire the voice packet. Even if the secondary earbud does not intercept and/or otherwise acquire voice packet in a transmission from the source device to the primary earbud, the secondary earbud can receive the voice packet thereby improving voice call quality even in poor link conditions.