Headless Device WLAN Connection via Mobile Intermediary
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Solution Overview
Problem
Devices without input or output interfaces, such as 'headless' devices, cannot connect to wireless local area networks (WLANs) due to design or cost constraints, and users may not know the necessary credentials for establishing a connection.
Innovation Solution
A method and apparatus where a connected mobile device establishes a secure channel with a headless device using protocols like EAP, WPA, or WPA2-PSK to transmit WLAN credentials, enabling the headless device to connect to a WLAN, even if it lacks physical input interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a device is designed without physical input interfaces (headless device), then device complexity and cost are reduced, but the device cannot connect to WLAN using traditional WPS methods
Solution Approach 1:
A mobile device serves as an intermediary between the headless device and the WLAN access point. The mobile device has a user interface for entering credentials and a wireless interface for communication with the headless device. Through this intermediary, the headless device can obtain WLAN credentials without having physical input interfaces itself.
Solution Approach 2:
The mobile device performs multiple functions: it acts as a credential input device for the headless device, a secure communication channel establishment device, and a credential transmission device. This multi-functionality enables the headless device to connect to WLAN despite lacking input interfaces.
2Ease of operation
If traditional WPS push-button mode is used, then connection setup is simplified, but devices without physical buttons cannot connect
Solution Approach 1:
The patent replaces the mechanical push-button interface with a wireless communication-based credential transmission system. Instead of physically pressing buttons on both devices, the mobile device sends credentials wirelessly to the headless device through a secure channel established via EAP exchange, eliminating the need for mechanical interfaces.
Solution Approach 2:
The mobile device acts as an intermediary that bridges the gap between traditional WPS requirements and headless device capabilities. It receives user input through its own interface and translates it into wireless credential transmission to the headless device, enabling compatibility without requiring the headless device to have physical buttons.
3Adaptability or versatility
If PIN mode is used for WPS, then connection can be established, but users must know and input the PIN which headless devices cannot do
Solution Approach 1:
The mobile device serves as an intermediary that handles the credential input function. The user enters the WLAN PIN through the mobile device's interface, and the mobile device then transmits this credential to the headless device wirelessly. This eliminates the requirement for the headless device to have input capabilities while maintaining PIN-based security.
Solution Approach 2:
The headless device performs self-service by automatically receiving and applying credentials through the secure channel established with the mobile device. Once the mobile device provides the credentials, the headless device autonomously uses them to connect to the WLAN without requiring user interaction or manual configuration on the headless device itself.
Data Source
AI summary
A method includes, at a first device while the first device is connected to a wireless local area network (WLAN) and a second device is unconnected to the WLAN, establishing a secure channel to the second device using an EAP exchange. The method also includes sending at least one credential associated with the WLAN to the second device via the secure channel to enable the second device to connect to the WLAN.