Dynamic RAN Selection Between 5G SA and NSA Architectures

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Solution Overview

Problem

MNOs face challenges in optimizing the deployment of newer radio access technologies like 5G while supporting legacy standards, as standalone 5G deployments offer full services but require network replacement, while non-standalone deployments do not, leading to incomplete service access.

Innovation Solution

A system that dynamically selects between 5G NSA and 5G SA architectures based on mobile device capabilities, coverage conditions, and requested services using a radio intelligent controller to ensure seamless access to appropriate services.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If standalone 5G deployment is implemented, then complete 5G services are provided, but network replacement is required

Engineering Contradiction:
Improveservice completenessVSAvoidnetwork deployment complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system dynamically selects between 5G NSA and 5G SA architectures based on real-time conditions including mobile device capabilities, coverage availability, and service requirements. This dynamic architecture selection allows the network to adapt between standalone and non-standalone modes without requiring complete network replacement, thus resolving the contradiction between service completeness and deployment complexity.

Inventive Principle:
Principle #15Dynamics

2Ease of manufacture

If non-standalone 5G deployment is implemented, then existing infrastructure is leveraged, but complete 5G services are not accessible

Engineering Contradiction:
Improvedeployment easeVSAvoidservice accessibility
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The radio intelligent controller enables the network to support multiple 5G deployment architectures (both NSA and SA modes) simultaneously. By implementing multi-functional architecture support, the system allows mobile devices to access complete 5G services through NSA mode when available while falling back to legacy services when necessary, thus achieving both deployment ease and service accessibility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If dynamic RAN selection is implemented, then network efficiency is enhanced, but system complexity increases

Engineering Contradiction:
Improvenetwork efficiencyVSAvoidcontrol system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The radio intelligent controller autonomously monitors network conditions, mobile device capabilities, and service requirements to automatically select the optimal RAN architecture without manual intervention. This self-service decision-making mechanism enhances network efficiency by dynamically adapting to changing conditions while containing complexity within the controller itself, preventing complexity from propagating to the entire system.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS20250338336A1Dynamic selection of radio access network (RAN) among available ran architectural alternatives
Publication Date: 2025.10.30 AT&T INTELLECTUAL PROPERTY I L P
  • US20250338336A1 patent drawing
  • US20250338336A1 patent drawing
  • US20250338336A1 patent drawing

AI summary

Aspects of the subject disclosure may include, for example, determining a capability of a mobile device, collecting a mobile station measurement, applying a rule according to the capability and measurement to obtain a radio access network (RAN) recommendation that identifies one of a first or second RANs as a preferred RAN, wherein a service is provided to the device via the preferred RAN. The first RAN comprises a first base station that supports a first exchange of user data and corresponding control signaling to facilitate access to a first set of services. The second RAN comprises a second base station adapted to support a second exchange of user data and a third base station adapted to support a corresponding exchange of control signaling to facilitate access to a second set of services. The second RAN is unable to facilitate access to the first set of services. Other embodiments are disclosed.