Unified IMS and MCPTT Authentication in SIP Registration

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Solution Overview

Problem

Current MCPTT systems face challenges in performing multiple authentications within a single SIP registration process, particularly in scenarios where IMS and MCPTT credentials are isolated and managed by different service providers, necessitating a mechanism for simultaneous IMS and MCPTT authentication to ensure secure service registration.

Innovation Solution

A method and system for performing multiple authentications within a service registration procedure, where a User Equipment (UE) sends a REGISTER request message to an IMS server, receives authentication challenges, verifies them, and generates a response message that includes IMS and MCPTT authentication responses, allowing simultaneous authentication with both IMS and MCPTT servers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate authentication procedures are performed for IMS and MCPTT, then security and authenticity are ensured for both domains, but authentication time and call setup time increase

Engineering Contradiction:

Improveauthentication securityVSAvoidauthentication time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent combines separate IMS authentication and MCPTT authentication procedures into a single unified authentication process. The UE performs both authentications simultaneously by sending authentication responses to both the IMS server and MCPTT application server during the same registration procedure, thereby reducing total authentication time while maintaining security for both domains

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The authentication mechanism is designed to serve multiple functions: it performs both IMS service authentication and MCPTT service authentication through a single unified procedure. The system enables one authentication process to fulfill multiple authentication requirements for different service domains, reducing redundancy and improving efficiency

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If multiple authentication procedures are performed sequentially, then both IMS and MCPTT credentials are verified, but call setup time and service registration time increase

Engineering Contradiction:

Improvecredential verificationVSAvoidcall setup speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent performs authentication actions in advance and in parallel during the service registration phase. Both IMS and MCPTT authentications are completed before the actual service usage begins, so that when the service is needed, authentication is already complete. This preliminary parallel authentication reduces call setup time while ensuring both credentials are verified

Inventive Principle:

Principle #10Preliminary action

3Reliability

If separate service registration procedures are used for IMS and MCPTT, then each domain's security requirements are met, but registration complexity and time increase

Engineering Contradiction:

Improvedomain securityVSAvoidregistration procedure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges separate IMS service registration and MCPTT service registration into a single unified registration procedure. The UE sends one REGISTER request that triggers both authentication processes, and both service registrations are completed simultaneously, reducing procedural complexity while maintaining domain-specific security requirements

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The unified registration procedure serves multiple registration functions simultaneously. A single registration action completes both IMS service registration and MCPTT service registration, making the system more efficient and less complex while still meeting the security and authentication requirements of both domains

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10708783B2Method for performing multiple authentications within service registration procedure

Publication Date: 2020.07.07 SAMSUNG ELECTRONICS CO LTD

AI summary

Embodiments herein provide a method for performing multiple authentications within a service registration procedure. The method includes sending, by a User Equipment (UE) a REGISTER request message to an IP Multimedia Subsystem (IMS) server. Further, the method includes receiving, an IMS authentication challenge from the IMS server, where the IMS authentication challenge includes an IMS authentication parameter and a MCPTT authentication challenge. Further, the method includes verifying, at the UE, the IMS authentication challenge. Further, the method includes generating, at the UE, a REGISTER response message. Further, the method includes sending, a REGISTER response message to the IMS server, where the REGISTER response message includes an IMS authentication response to authenticate UE at the IMS server and a MCPTT authentication response to authenticate the UE at the MCPTT server.