Playback Device Reconnection Using Peer Network Parameters
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Solution Overview
Problem
Playback devices in media playback systems can become 'lost' due to stale network parameters when powered up, preventing reconnection to the network.
Innovation Solution
Playback devices re-establish network connectivity by obtaining network parameters from another connected device and updating to the most recent parameters, facilitating stable reconnection without user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If playback devices store network parameters locally to maintain connectivity, then device autonomy is improved, but network stability deteriorates when parameters become stale
Solution Approach 1:
The system continuously monitors network connection status and automatically detects when network parameters become stale by attempting to establish connections using stored parameters. When failure occurs, the device initiates a feedback loop to query other playback devices for updated network parameters, thereby resolving the contradiction between maintaining autonomy and ensuring stability.
Solution Approach 2:
Playback devices autonomously manage their own network connectivity by storing parameters locally and automatically detecting when reconnection is needed. The system self-corrects by querying peer devices for updated parameters without requiring user intervention, thus maintaining both device autonomy and network stability.
2Speed
If playback devices use stored network parameters for reconnection, then connection speed is improved, but connection reliability deteriorates due to parameter staleness
Solution Approach 1:
The system performs preliminary actions by storing network parameters locally for rapid reconnection. However, it also proactively queries other playback devices for updated parameters before disconnection occurs, ensuring that the stored parameters remain current. This dual approach maintains both fast reconnection and high reliability.
Solution Approach 2:
The system implements feedback mechanisms where playback devices continuously or periodically query peer devices for updated network parameters. This feedback loop ensures that parameters remain current while maintaining the ability to reconnect quickly using stored parameter copies.
3Extent of automation
If playback devices attempt reconnection using stale parameters, then reconnection attempts are automated, but successful connection probability decreases
Solution Approach 1:
The automated reconnection process incorporates feedback by first detecting connection failure using stored parameters, then automatically querying other playback devices for updated parameters, and finally attempting reconnection with the updated parameters. This multi-step automated feedback loop maintains both automation and connection success rate.
Solution Approach 2:
The system performs self-service by automatically detecting when reconnection is needed, autonomously querying peer devices for updated parameters, and executing reconnection without user intervention. This automation maintains both high success rates and user convenience.
Data Source
AI summary
Example techniques relate to re-establishing connectivity of playback devices. In an example implementation, a first playback device determines that a first access point has been replaced with a second access point, wherein the first playback device previously established a valid network connection over the first WLAN using first network parameters. The first playback device connects to the second access point, the second access point providing a second WLAN. The first playback device requests, via the wireless network interface from the second access point, an IP address in a second subnet, the second subnet covering a different range of IP addresses than the first subnet and establishes a network connection over the second WLAN using second network parameters stored in the data storage of the first playback device.