Relay Device PDU Transfer Control via Content Information
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Solution Overview
Problem
Relay devices cannot perform transfer control according to the details of encrypted content being transferred between a server device and a terminal device, as they cannot identify the content details when communication is encrypted.
Innovation Solution
Incorporating a PDU transfer unit, a content information reception unit, and a transfer control unit in the relay device to receive and analyze content information from the terminal device, allowing for controlled transfer based on the content type, even when communication is encrypted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encrypted communication is used between server device and terminal device, then information security is improved, but relay device cannot identify content details for transfer control
Solution Approach 1:
The patent segments the communication control into two parts: encrypted data transmission (for security) and separate content information transmission (for control). The content information is extracted from encrypted communications and transmitted separately to the relay device, allowing transfer control without compromising encryption security.
Solution Approach 2:
The patent introduces content information as an intermediary element that bridges the gap between encrypted communication and relay control. This content information acts as a mediator that carries essential control data without requiring the relay device to decrypt the actual communication content.
2Productivity
If relay device performs transfer control according to content details, then transfer efficiency is improved, but relay device must decrypt encrypted communications
Solution Approach 1:
The patent extracts content information from encrypted communications and separates it from the encrypted data stream. This extracted content information is then used for transfer control, allowing the relay device to optimize transfers without accessing or decrypting the actual encrypted content.
Solution Approach 2:
The patent creates a copy of essential content information (such as content type, size, priority) from the encrypted communication and transmits this copy separately to the relay device. This copying approach enables control decisions without requiring decryption of the original encrypted data.
3Reliability
If relay device cannot identify content details, then encryption security is maintained, but transfer control cannot be optimized
Solution Approach 1:
The patent implements a feedback mechanism where content information is continuously provided back to the relay device about the encrypted communications. This feedback loop enables the relay device to adjust transfer parameters and optimize performance while maintaining encryption security, as the content information provides necessary guidance without requiring decryption.
Data Source
AI summary
Provided is a relay device for transferring a protocol data unit (PDU) transmitted from a server device to a terminal device, receiving content information that pertains to content stored in the PDU, and controlling a transfer in the PDU transfer step on the basis of the content information. The terminal device receives, via the relay device, the PDU transmitted from the server device, and transmits the content information that pertains to the content stored in the PDU to the relay device.