BLE Room Authentication for Collaboration Echo Prevention
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Solution Overview
Problem
Echo occurs in virtual meetings when participants fail to manually mute their microphones, disrupting the meeting and undermining user experience, with existing solutions being unreliable and application-specific.
Innovation Solution
Utilizing Bluetooth Low Energy (BLE) communications to identify and control devices within the same room, automatically managing microphone and speaker settings through a common chassis design and alphanumeric handles, ensuring only devices in the same room are authenticated and controlled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual muting is required to prevent echo, then echo prevention can be achieved, but user experience deteriorates and operation complexity increases
Solution Approach 1:
The system automatically detects devices in the same room using BLE communications and autonomously mutes microphones to prevent echo, eliminating the need for manual user intervention. The collaboration device monitors audio levels and device proximity, then automatically executes muting actions without requiring users to manually adjust settings.
Solution Approach 2:
The system performs preliminary detection of devices in the same room using BLE advertising packets before echo problems occur. By identifying nearby devices in advance and establishing authentication handles, the system prepares to automatically mute microphones proactively rather than reactively after echo begins.
2Reliability
If application-specific echo prevention is used, then echo can be controlled in specific applications, but adaptability and reliability across different applications deteriorate
Solution Approach 1:
The system implements a universal echo prevention mechanism that operates across different collaboration applications and device types. The common chassis design with standardized BLE advertising packets and authentication handles allows any collaboration device to automatically detect and control audio settings for devices in the same room, regardless of the specific application being used.
3Extent of automation
If automatic audio blocking is implemented, then echo prevention is automated, but user experience and reliability deteriorate due to high false positive rates
Solution Approach 1:
The system continuously monitors audio levels and device proximity through BLE communications, using this feedback to intelligently determine when muting is necessary. The collaboration device analyzes real-time audio characteristics and device positions to distinguish between actual echo conditions and normal operation, reducing false positives while maintaining effective echo prevention.
Solution Approach 2:
The system dynamically adjusts control parameters based on detected conditions, such as changing from no action to muting only when specific audio level thresholds and device proximity conditions are met. This parameter-based approach allows the system to maintain automation while improving reliability by applying muting only when truly necessary.
4Area of stationary object
If Wi-Fi communications are used for device identification, then long-range communication is achieved, but precision in identifying devices in the same room deteriorates
Solution Approach 1:
The system segments the communication approach into two parts: using Wi-Fi for broad network discovery and BLE for precise local device identification. This segmentation allows the system to first identify devices on the network at a macro level, then use BLE's shorter range but more precise capabilities to accurately determine which devices are physically in the same room.
Data Source
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AI summary
This disclosure describes systems, methods, and devices for remotely controlling device settings for collaboration sessions. A device may identify an alphanumeric handle based on a location identifier of a first location associated with the device and a collaboration session identifier for a collaboration session of a collaboration application executed by the device; generate a Bluetooth Low Energy (BLE) advertising packet including a header and a payload, the header including the alphanumeric handle and a hardware identifier that identifies the device; transmit the BLE advertising packet; identify an authentication request received from a second device in the collaboration session, the authentication request including the alphanumeric handle; authenticate the second device based on the alphanumeric handle; and transmit a BLE notification packet including an indication of a volume at which the second device is to set a speaker for the collaboration session.