Session Restriction Enforcement for SIP Communications
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Solution Overview
Problem
Existing real-time communication sessions, such as instant messaging, lack the ability to restrict participation and message visibility, allowing unwanted users to join or access session content.
Innovation Solution
A method and system that allows users to initiate sessions with restrictions, where an inviter specifies session restrictions and enforces them using client and server components, ensuring only authorized users can participate and access session content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional SIP protocols are used for real-time communication sessions, then ease of operation and compatibility are improved, but security and control over session participation are worsened
Solution Approach 1:
The patent applies preliminary action by requiring the inviter to specify session restrictions before the session is established. The inviter defines who can participate and what actions are permitted during the session, and these restrictions are enforced from the outset. This prevents unauthorized participation while maintaining SIP protocol compatibility for easy session establishment.
Solution Approach 2:
The patent introduces an intermediary mechanism through the session restriction enforcement system that mediates between the inviter's security requirements and the invitee's participation. The system acts as a mediator by validating participant identities and monitoring session actions against defined restrictions, ensuring security without disrupting the underlying SIP communication flow.
2Reliability
If session restrictions are implemented to prevent unauthorized participation, then session security is improved, but device complexity and protocol overhead are worsened
Solution Approach 1:
The patent applies universality by designing the session restriction mechanism to work with existing SIP infrastructure and multiple communication scenarios. The same restriction framework handles various session types (one-on-one, group calls, messaging) and different restriction kinds (participant authorization, action restrictions), reducing the need for separate complex systems for each scenario.
Solution Approach 2:
The patent implements self-service by enabling the inviter to autonomously define and enforce session restrictions without requiring complex centralized management. The inviter's client specifies restrictions locally, and these restrictions are automatically enforced by the session management system, reducing the need for additional administrative complexity.
3Loss of information
If message forwarding is prevented through restrictions, then information security is improved, but ease of operation for legitimate users is worsened
Solution Approach 1:
The patent applies local quality by implementing fine-grained control over specific message actions rather than blanket restrictions. The inviter can specify exactly which actions are restricted (e.g., forwarding, copying, printing) while allowing other message handling operations. This selective approach maintains confidentiality for sensitive actions while preserving ease of operation for legitimate message consumption and sharing activities.
Data Source
AI summary
A method and system for initiating a communications session with a restriction is provided. A communications system allows a user to place a restriction on a session to be conducted with another user. If the other user does not agree to the restriction or if the other user's system does not support the restriction, then the session will not be conducted. The communications system may also enforce the restrictions on the session.