Session Discovery Request Masking for Privacy
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Solution Overview
Problem
Existing Inter-UE Transfer (IUT) technologies do not allow other terminals to acquire information about a session being performed by a specific terminal, leading to difficulties in requesting media flow transfers and control changes, particularly due to privacy concerns and lack of session information availability.
Innovation Solution
A method for controlling sessions that involves receiving a session discovery request, checking permission, identifying media flows, masking certain flows if necessary, and forwarding transfer requests to the appropriate terminal, allowing terminals to freely acquire session information while maintaining privacy by masking sensitive data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If session information is fully disclosed to other terminals, then media flow transfer can be requested, but privacy is compromised
Solution Approach 1:
The patent applies local quality by selectively disclosing different portions of session information to different terminals based on their authorization levels. The serving SCC AS determines which specific session parameters (e.g., media flow identifiers, terminal identifiers) should be revealed to which requesting terminals, allowing media flow transfer operations while protecting sensitive private information through differentiated information disclosure.
2Loss of information
If session information is masked for privacy, then privacy is protected, but other terminals cannot acquire information needed for transfer requests
Solution Approach 1:
The serving SCC AS acts as an intermediary between the session-establishing terminal and requesting terminals. It receives session information from the source terminal, selectively masks or filters sensitive portions, and provides the processed information to authorized requesting terminals. This intermediary function enables both privacy protection through masking and operational capability through selective disclosure of necessary session parameters.
3Loss of information
If all media flows are disclosed, then complete session visibility is achieved, but sensitive media flows are exposed
Solution Approach 1:
The patent extracts and separates sensitive media flow information from the complete session information set. The serving SCC AS identifies which media flows contain sensitive content (e.g., personal communications, confidential data) and removes or masks those specific portions while retaining and disclosing non-sensitive session information, enabling partial session visibility without exposing harmful sensitive data.
Data Source
AI summary
Disclosed is a method for masking media flows against a discovery procedure for inter-UE transfer. According to the method, when a Service Centralization and Continuity Application Server (SCC AS) establishes a session, an User Equipment (UE) is able to indicate to the network that some or all of the media flow composing a session are not discoverable from other UEs. Therefore, when the SCC AS receives the request for discovery for discovery of the ongoing session on any UE, the SCC AS identifies which media flows in the ongoing session of the UE are indicated as indiscoverable, and does not send information about theses media flows to the other UEs.