Playback Network Credential Transfer After Wi-Fi Configuration Changes
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Solution Overview
Problem
Existing networked media playback systems face challenges in reconnecting to a new or updated secure wireless network when network configuration parameters such as SSID and password change, leading to playback devices losing connectivity.
Innovation Solution
A control device establishes a direct connection with a first playback device, updates it with new network configuration parameters, and propagates these parameters to other devices within the system, enabling them to reconnect to the new wireless network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network configuration parameters are updated in a secure wireless network, then network security is improved, but playback devices lose connectivity and require manual reconfiguration
Solution Approach 1:
The system enables self-service by allowing playback devices to automatically obtain updated network configuration parameters through direct device-to-device communication. When the control device receives new network credentials, it automatically propagates them to connected playback devices without requiring user intervention, making the system reconfigure itself autonomously.
Solution Approach 2:
The control device acts as an intermediary between the secure wireless network and playback devices. It receives updated network configuration parameters from the network and distributes them to playback devices through direct connections, mediating the information flow and enabling automatic reconfiguration without user involvement.
2Reliability
If network configuration parameters are propagated to all playback devices, then system connectivity is restored, but communication complexity increases
Solution Approach 1:
The system segments the parameter distribution process by establishing direct individual connections between the control device and each playback device. This segmentation allows credentials to be propagated one-to-one through dedicated communication channels, simplifying the overall distribution mechanism while ensuring reliable delivery to each device.
Solution Approach 2:
The control device serves as an intermediary that manages the propagation of network configuration parameters to multiple playback devices. It handles the complexity of distribution by sequentially establishing direct connections with each device, thereby maintaining simple communication protocols while achieving system-wide credential updates.
3Reliability
If direct connections are established for credential distribution, then security is maintained, but time required for reconfiguration increases
Solution Approach 1:
The system performs preliminary actions by establishing direct connections and propagating network configuration parameters proactively before connectivity is completely lost. The control device detects credential changes and initiates propagation to playback devices in advance, reducing the overall reconfiguration time while maintaining security through direct connections.
Solution Approach 2:
The system maintains continuity of useful action by keeping direct communication channels open between the control device and playback devices during credential propagation. This continuous communication allows for efficient, uninterrupted transmission of updated credentials, reducing reconfiguration time while preserving security through established direct connections.
Data Source
AI summary
An example first playback device is configured to (i) determine that the first playback device has lost a connection to a first secure wireless network; (ii) transmit at least one message that indicates that the first playback device is available for setup; (iii) establish a first direct communication path with a computing device configured to operate on a second secure wireless network; (iv) receive, over the first direct communication path, network configuration parameters for connecting to the second secure wireless network; (v) establish a connection to the second secure wireless network; (vi) receive, from a second playback device, a message indicating that the second playback device has lost a second connection to the first secure wireless network; (vii) establish a second direct communication path with the second playback device; and (viii) transmit the network configuration parameters for connecting to the second secure wireless network to the second playback device.