Wireless Audio Session Joining Across Dual Frequency Bands
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Solution Overview
Problem
Existing technologies fail to seamlessly join an additional wireless audio bud to an existing audio session due to connectivity issues, leading to interruptions and a negative user experience.
Innovation Solution
The source device provides connection information to the second audio output device using a different frequency band during an ongoing session, ensuring seamless integration by informing both devices of the resources to be utilized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a second wireless audio bud attempts to join an existing audio session using the same frequency band, then connectivity issues occur due to RF interference and bandwidth constraints, but switching to a different frequency band requires additional spectrum resources and coordination
Solution Approach 1:
The patent transitions the problem from a two-dimensional frequency band selection to a three-dimensional solution space by introducing time as an additional dimension. The source device temporarily suspends audio data transmission on the first frequency band, creates a frequency-time matrix of available resources, and selects optimal resources based on both frequency and time dimensions. This allows the second audio output device to join seamlessly without RF interference by utilizing time-sliced frequency resources.
Solution Approach 2:
The source device performs preliminary actions by pre-identifying and reserving second frequency band resources before the second audio output device attempts to join. The source device proactively suspends transmission on the first band, prepares the second band resources, and establishes connection information in advance. This preliminary preparation eliminates connectivity issues during the actual joining process by ensuring resources are ready and available.
2Ease of operation
If the source device suspends audio data transmission to allow the second device to join, then seamless connection is achieved, but audio delivery is interrupted during the transition
Solution Approach 1:
The patent maintains continuity of useful action by rapidly switching frequency bands rather than completely stopping audio transmission. The source device suspends transmission on the first frequency band only momentarily, immediately establishes connection on the second frequency band, and resumes audio data delivery without perceptible interruption to the user. This continuous action approach minimizes the suspension period while ensuring seamless device joining.
Solution Approach 2:
The source device rushes through the frequency band transition by quickly suspending the first band, establishing the second band connection, and resuming transmission in rapid succession. This skipping approach minimizes the time the second audio output device waits for connection resources, effectively rushing through the transition period to maintain seamless user experience without perceptible audio interruption.
3Use of energy by moving object
If the source device provides connection information on the first frequency band, then bandwidth efficiency is maintained, but the second audio output device cannot reliably receive connection information due to ongoing audio transmission
Solution Approach 1:
The patent segments the frequency band resources by separating audio data transmission from connection information delivery. The source device designates the first frequency band exclusively for audio data transmission and the second frequency band for connection information exchange. This segmentation eliminates RF interference between audio and control channels, allowing the second audio output device to reliably receive connection information without bandwidth efficiency loss, as each band is dedicated to its specific function.
Data Source
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AI summary
An audio output device may join an existing session between a source device and another audio output device. The source device may transmit audio data associated with an audio session, using a first frequency band, to a first wireless audio output device and transmit connection information associated with the audio session to a second wireless audio output device over a second frequency band. The second frequency band differs from the first frequency band and the connection information allows the second wireless audio output device to join the audio session. After transmitting the connection information, the source device may transmit subsequent audio data associated with the audio session to the first wireless audio output device and the second wireless audio output device.