LE Audio Headset Call Sharing via Secondary CIG
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Solution Overview
Problem
Conventional Bluetooth Low Energy (LE) audio headsets fail to share calls seamlessly between users, leading to issues such as poor audio quality, noise interference, and compromised privacy when using speaker mode, and are inadequate for users with hearing disabilities.
Innovation Solution
A method and LE audio headset that allows call sharing between primary and secondary headsets by creating a secondary Connected Isochronous Group (CIG), optimizing codec settings, and synchronizing audio based on the number of headsets, enabling immediate call sharing with user gestures, and supporting hearing aids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If speaker mode is used to allow multiple users to participate in the call, then call sharing capability is improved, but audio quality and privacy are degraded
Solution Approach 1:
The system segments the call audio stream by creating separate Connected Isochronous Stream (CIS) connections to different LE audio headsets within a Connected Isochronous Group (CIG). Each headset receives the audio independently through dedicated Bluetooth Low Energy connections, allowing selective call sharing with specific users while maintaining audio quality and privacy, unlike speaker mode which broadcasts to all surrounding areas.
2Adaptability or versatility
If call audio is streamed to multiple LE audio headsets simultaneously, then call sharing is enabled, but synchronization difficulty increases
Solution Approach 1:
The system merges multiple CIS connections into a unified Connected Isochronous Group (CIG) managed by a central device. The central device coordinates timing and synchronization across all peripheral headsets in the group, ensuring that call audio is delivered synchronously to multiple users without requiring complex peer-to-peer synchronization protocols between individual headsets.
3Reliability
If codec configuration is optimized for multiple headsets, then audio quality is improved, but system complexity increases
Solution Approach 1:
The system dynamically adjusts codec configuration parameters such as sample rate, bit depth, and channel configuration based on the number of headsets in the CIG and their individual capabilities. The central device manages these parameter changes automatically, optimizing audio quality for multi-headset scenarios without requiring manual configuration or increasing user-facing system complexity.
Data Source
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AI summary
Embodiments herein provide a method for call sharing between Low Energy (LE) audio headsets (100, 300A-300B). The method includes receiving, by a primary LE audio headset (100) connected with a user device (200) over a primary Connected Isochronous Group (CIG), a request message for sharing a call receiving at the user device (200) with secondary LE audio headsets (300A-300B) from the user device (200). The method includes connecting, by the primary LE audio headset (100), to the secondary LE audio headsets (300A-300B) over a secondary CIG for establishing a combined call between the primary LE audio headset (100) and the secondary LE audio headsets (300A-300B).