Audio Token SSID Discovery for Interference Reduction
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Solution Overview
Problem
Current technologies do not enable effective discovery and communication over audio channels between multiple broadcasting computing devices, leading to congestion and interference in environments like subway stops and bus stops where multiple devices attempt to broadcast simultaneously.
Innovation Solution
Establishing audio communication channels by broadcasting and receiving audio tokens using specific frequency bands and encoding schemes, allowing user computing devices to select and respond to valid audio service set identifiers (SSIDs) to isolate and communicate with specific broadcasting devices, thereby minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple broadcasting computing devices broadcast simultaneously at a location, then more devices can provide services, but audio channel congestion and interference increase causing communication failures
Solution Approach 1:
The audio frequency spectrum is segmented into multiple distinct channels, allowing multiple broadcasting devices to operate simultaneously without interference. Each device is assigned a specific frequency channel, dividing the congested audio medium into separate communication paths that prevent signal collision and maintain reliable transmission.
Solution Approach 2:
The patent introduces frequency as an additional dimension for channel differentiation. Instead of all devices competing on a single audio channel, the system transitions to a multi-dimensional space where devices can be distinguished and separated by their operating frequency, enabling simultaneous communications without interference.
2Adaptability or versatility
If a user computing device listens to all audio frequency channels, then it can detect all broadcasting devices, but processing complexity and energy consumption increase
Solution Approach 1:
Broadcasting devices perform preliminary actions by transmitting their identifier and assigned frequency channel in an initial audio token. User computing devices can then use this pre-provided frequency information to directly tune to specific channels of interest without having to scan or process all frequency bands, reducing computational complexity and energy consumption.
Solution Approach 2:
The audio token serves as an intermediary that carries essential information including the broadcasting device identifier and its assigned frequency channel. This intermediary message allows user devices to efficiently locate and connect to specific broadcasters without exhaustive searching, simplifying the discovery process while maintaining comprehensive device detection capability.
3Reliability
If audio tokens are broadcast over a wide frequency band, then signal robustness increases, but interference from other broadcasts increases
Solution Approach 1:
The wide frequency band is segmented into multiple narrower, non-overlapping channels. Each broadcasting device operates on its assigned narrow channel, which maintains sufficient signal robustness for reliable communication while minimizing the spectral footprint. This segmentation prevents wideband signals from causing and experiencing interference, as each channel is isolated from others.
Solution Approach 2:
Each frequency channel is optimized with local quality characteristics suited for its specific broadcasting device. By concentrating transmission power and signal processing resources on narrow, dedicated channels rather than spreading them wide, the system achieves robust communication on each individual channel while the collective set of narrow channels occupies less total spectral space, reducing overall interference.
Data Source
AI summary
A first computing device is configured to broadcast a first audio token comprising a first identifier over a first audio frequency channel, activate a first microphone component, and receive a first audio response token generated by a second computing device via the first audio frequency channel. A second computing device is configured to receive an input indicating a request to receive data, activate the second microphone component, receive the first audio token over the first audio frequency channel, receive one or more other audio tokens over one or more other audio frequency channels, determine that the received first audio token comprises a valid audio token, restrict the range of received audio inputs to comprise only the first audio frequency channel, generate the first audio response token, and communicate the first audio response token to the first computing device via the first audio frequency channel.