Smartcard Terminal Registration via IMS and Broadcast Server

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Solution Overview

Problem

The existing IP-based Multimedia Sub-system (IMS) requires separate authentication and registration procedures for smartcard terminals with both IMS and broadcast servers, leading to inefficient resource utilization, increased latency, and higher costs due to redundant registration processes.

Innovation Solution

A method and system that utilize a Generic Bootstrapping Architecture (GBA) Network Application Function (NAF) to generate specific key material (Ks_NAF) for simultaneous registration of smartcard terminals with both IMS and broadcast servers, or sequential registration through the IMS server, optimizing authentication and security association establishment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate authentication and registration procedures are performed for IMS and broadcast servers, then security association establishment is achieved, but latency is increased and resource utilization is inefficient

Engineering Contradiction:

Improvesecurity association establishmentVSAvoidlatency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent combines separate authentication and registration procedures into a unified process. The terminal performs authentication with the IMS server and registration with the broadcast server simultaneously through integrated signaling messages, eliminating the need for separate procedure executions and reducing overall latency.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements preliminary authentication through the IMS server before broadcast server registration. The authentication credentials and security parameters are pre-established with the IMS server, which then facilitates streamlined registration with the broadcast server using these pre-computed security associations.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If separate registration procedures are performed for IMS and broadcast servers, then both services are authenticated, but resource utilization efficiency decreases

Engineering Contradiction:

ImproveauthenticationVSAvoidresource utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The IMS server is designed to perform multiple functions: it acts as both an authentication server for security credential verification and as a registration coordinator for broadcast server access. This multi-functionality eliminates redundant authentication mechanisms and improves resource utilization by having a single server handle both roles.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The IMS server serves as an intermediary between the terminal and the broadcast server. It mediates the registration process by verifying terminal credentials and then facilitating the terminal's registration with the broadcast server, eliminating the need for the terminal to perform separate direct authentication with both servers.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If separate registration procedures are performed for IMS and broadcast servers, then both systems are registered, but cost increases due to redundancy

Engineering Contradiction:

ImproveregistrationVSAvoidcost

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent merges registration signaling messages to combine multiple registration operations into a single integrated procedure. The terminal sends unified registration requests that handle both IMS and broadcast server registration simultaneously, reducing the total number of signaling exchanges and associated communication costs.

Inventive Principle:

Principle #5Merging (Combining)

4Reliability

If separate authentication procedures are performed, then security is established, but the number of signaling messages increases

Engineering Contradiction:

ImprovesecurityVSAvoidsignaling message count

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The authentication signaling messages are designed to serve multiple purposes simultaneously. A single authentication exchange with the IMS server establishes both IMS security credentials and provides the necessary credentials for broadcast server registration, reducing the total number of signaling messages required.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP2260610B1Method and system for registering a smartcard terminal with a broadcast server

Publication Date: 2019.09.25 SAMSUNG ELECTRONICS CO LTD

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AI summary

A method and system for registration with a broadcast server is provided. A request from a smartcard terminal for registration is received and the smartcard terminal is authenticated based on the request. Further, a specific key material, Ks_NAF, is generated in response to the request. At least one of registering the smartcard terminal with the Internet Protocol (IP) multimedia subsystem (IMS) server and with the broadcast server simultaneously, and registering the smartcard terminal with the IMS server and subsequently with the broadcast server through the IMS server, is performed. At least one of notifying the IMS server of status of the registration by the broadcast server, and notifying the broadcast server of the status of the registration by the IMS server, is performed. The system includes a smartcard terminal for sending a request for registration, a key generator for generating a Ks_NAF, and an IMS server and a broadcast server for authentication and security association establishment with the smartcard terminal using the Ks_NAF.