SBA Authentication for Direct WTRU-to-Core HTTP Signaling

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Solution Overview

Problem

Existing wireless architectures face inefficiencies in communicating with Core Network Functions, particularly in the transition from Non-Access Stratum protocol to HTTP, necessitating improved methods for direct communication with Core Network Functions without relying on the Access and Mobility Function.

Innovation Solution

Implementing Service-Based Architecture (SBA) to enable direct communication between wireless transmit receive units (WTRUs) and Core Network Functions using HTTP semantics, facilitating authentication and key agreement processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If Service-Based Architecture is implemented to enable direct communication between WTRUs and Core Network Functions, then communication efficiency is improved, but device complexity increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoiddevice complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent introduces an authentication server as an intermediary component that mediates between the WTRU and Core Network Functions. This server handles the complex authentication and key agreement processes, allowing WTRUs to communicate directly with Core Network Functions without needing to implement complex authentication logic themselves, thus improving communication efficiency while managing device complexity through centralized authentication services

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of time

If direct communication with Core Network Functions is enabled without Access and Mobility Function, then loss of time is reduced, but reliability may worsen

Engineering Contradiction:

Improveauthentication timeVSAvoidauthentication reliability

Core Design Contradiction:

Loss of timeVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the authentication server receives authentication requests from WTRUs, validates them against stored credentials, and returns authentication decisions to the Core Network Functions. This feedback loop ensures reliable authentication by verifying credentials centrally while enabling direct communication paths that reduce authentication time compared to traditional multi-hop approaches

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If HTTP semantics are used instead of Non-Access Stratum protocol, then adaptability is improved, but device complexity increases

Engineering Contradiction:

Improveprotocol adaptabilityVSAvoidprotocol complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent changes the communication protocol parameters from Non-Access Stratum to HTTP semantics, enabling WTRUs to interact with Core Network Functions using standard web protocols. This parameter change improves adaptability by allowing WTRUs to communicate with various Core Network Functions through unified HTTP interfaces, while the authentication server handles the complexity of protocol translation and compatibility

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250380132A1Authentication methods for SBA-enabled devices

Publication Date: 2025.12.11 INTERDIGITAL PATENT HOLDINGS INC

AI summary

In an effort to extend Service-Based Architecture to the wireless transmit receive units (WTRUs), there may be systems, devices, and methods that address approaches and techniques to facilitate communication directly with the Core Network Functions without the need to go through the Access and Mobility Function. As part of the upgrade of N1 to utilize HTTP instead of the Non-Access Stratum protocol, there may be techniques and approaches that permit the usage of HTTP semantics.