5G Core Service-Based Architecture for Uplink Data Indication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing mobility and authentication/authorization processes, particularly in scenarios involving unmanned aerial vehicles (UAVs) and network slicing, where existing protocols are not adequately flexible or scalable to handle diverse traffic loads and technologies.
Innovation Solution
The proposed solution involves a service-based architecture within the 5G core network, which includes a framework for mobility management entities (MMEs), packet data network gateways, and network slicing, enabling dynamic resource allocation and authentication/authorization mechanisms that can adapt to varying traffic conditions and support multiple technologies, including UAV communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing protocols are used for mobility management and authentication, then system simplicity is maintained, but flexibility and scalability are insufficient to handle diverse traffic loads and technologies
Solution Approach 1:
The patent segments the authentication and authorization process into distinct service-based functions (AMF, SMF, UPF, PCF, UDM, AUSF) that can operate independently and be selectively deployed. This modular architecture allows the system to handle diverse traffic loads and technologies by activating only the necessary service functions, thereby improving flexibility and scalability without requiring complete protocol redesign.
Solution Approach 2:
The service-based architecture implements universal interfaces and standardized protocols that enable the same core network functions to serve multiple types of wireless devices and traffic scenarios. The AMF, SMF, and other service functions can handle various access types (terrestrial, non-terrestrial, UAV) through a unified framework, enhancing adaptability while maintaining protocol consistency.
2Productivity
If traditional core network architecture is used, then implementation simplicity is maintained, but dynamic resource allocation and authentication mechanisms cannot adapt to varying traffic conditions
Solution Approach 1:
The patent implements dynamic resource allocation through the SMF (Session Management Function) and UPF (User Plane Function) that can adaptively adjust network resources based on real-time traffic conditions. The service-based architecture allows these functions to dynamically establish, modify, and release data sessions and user plane connections, enabling efficient resource allocation for varying traffic loads while maintaining a structured network framework.
Solution Approach 2:
The architecture incorporates feedback mechanisms where the PCF (Policy Control Function) receives information about network conditions and device states, then adjusts policy rules and resource allocation accordingly. The service functions exchange signaling messages that provide continuous feedback about traffic conditions, enabling adaptive resource management while maintaining architectural coherence.
3Reliability
If existing authentication procedures are used, then procedural simplicity is maintained, but seamless communication and resource allocation cannot be ensured across diverse wireless devices and network conditions
Solution Approach 1:
The patent introduces the AUSF (Authentication Server Function) and UDM (Unified Data Management) as intermediary components that centralize authentication and authorization operations. These service functions act as mediators between the AMF and the core network, implementing robust authentication procedures (including 5G AKA and EAP-based methods) while shielding the complexity from other network elements and providing reliable authentication services across diverse devices and access types.
Data Source
Figure 1A~1B
Figure 2A~2D
Figure 3
AI summary
A wireless device receives, from a first network node, a message. The message is for establishing a packet data network (PDN) connection of the wireless device. The message indicates that transmission of uplink data via the PDN connection is not allowed until the wireless device receives an indication that transmission of uplink data via the PDN connection is allowed. The wireless device sends, to a second network node, based on receiving the indication that transmission of uplink data via the PDN connection is allowed, one or more uplink packets associated with the PDN connection.