UPnP Access Token Issuance Using Device Model Information
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Solution Overview
Problem
In a Universal Plug and Play (UPnP) network, devices connected by UPnP face challenges in controlling other devices without proper authority, leading to potential issues in device registration and control.
Innovation Solution
A method and apparatus for issuing an access token by a control point (CP) to a device, involving the transmission of search requests, receiving device information, and requesting access tokens based on both simple and detailed information about the device, including model information, to establish control authority.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If devices are connected by UPnP to enable interruption-free access and simplified networking, then ease of operation is improved, but device control authority and security deteriorate
Solution Approach 1:
The patent applies preliminary action by requiring device information (including model information) to be collected and stored before access token issuance. The control point gathers device characteristics in advance through search requests and uses this pre-collected information to make authoritative control decisions, ensuring security is established before operations begin.
2Reliability
If device information is collected to establish control authority, then device control authority is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential device information needed for control authority verification, specifically model information and other identifying characteristics. Rather than collecting all possible device data, the system takes out only the critical elements required for token issuance, reducing complexity while maintaining control authority.
3Reliability
If access token issuance is implemented to control device authority, then device control authority is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements self-service by enabling the control point to automatically issue access tokens based on pre-collected device information. The system serves itself by using stored model information and device characteristics to autonomously verify authority and generate tokens without manual intervention, maintaining ease of operation while ensuring control authority.
Data Source
AI summary
A method for issuing an access token of a device by a control point is provided. The method includes transmitting a search request message to the device, receiving, from the device, a search response message including first information indicating a type of the device, requesting access token issuance to the device using first information and second information, the second information including additional information about the device, and receiving the access token from the device. The second information may include model information about the device.