AMF Paging for CAG Devices in 5G Core
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Solution Overview
Problem
Current 4G/5G systems face challenges in implementing enhanced features and functionalities, particularly in network slicing and 5G core network architecture, where existing solutions lack efficient management of registration, connection, and quality of service (QoS) across diverse access networks and user equipment (UE) configurations.
Innovation Solution
The proposed solution enhances 4G/5G systems by implementing advanced network functions such as Access and Mobility Management Function (AMF), Session Management Function (SMF), and User Plane Function (UPF) to manage registration, connection, and QoS through advanced signaling protocols and network slicing mechanisms, enabling seamless communication across 3GPP and non-3GPP access networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slicing is implemented to support diverse services and access networks, then service differentiation and adaptability are improved, but network complexity and management overhead increase
Solution Approach 1:
The core network is segmented into functionally independent network slices, each dedicated to specific services or access networks. This segmentation enables independent management and optimization of each slice while maintaining overall system flexibility, directly addressing the need for service differentiation without proportionally increasing overall network complexity.
Solution Approach 2:
The patent implements a universal core network architecture that can serve multiple access networks (3GPP and non-3GPP) and support diverse services through a common framework. The network functions are designed with multi-functionality to handle various service types, reducing the need for separate dedicated infrastructure for each service category.
2Productivity
If dynamic resource allocation is implemented to optimize network efficiency, then productivity and resource utilization are improved, but control complexity and signaling overhead increase
Solution Approach 1:
The patent implements dynamic resource allocation mechanisms that automatically adjust network resources based on real-time demand, service requirements, and network conditions. Resource pools are dynamically assigned to different network slices and services, enabling optimized utilization without requiring complex manual configuration or control.
Solution Approach 2:
The network employs self-service mechanisms where network functions automatically manage and allocate resources based on predefined policies and real-time conditions. The system autonomously performs resource optimization without requiring extensive external control, reducing control complexity while maintaining high productivity.
3Reliability
If advanced signaling protocols are used to manage registration and connection across multiple access networks, then connection reliability and security are improved, but signaling overhead and processing time increase
Solution Approach 1:
The patent implements preliminary registration and authentication actions where user equipment establishes connection parameters and security contexts in advance before actual service activation. This preliminary setup reduces the time required for connection establishment during actual service usage, maintaining reliability while minimizing signaling overhead during active communication.
Solution Approach 2:
The patent merges registration, authentication, and connection establishment procedures into unified signaling protocols that handle multiple functions simultaneously. By combining these operations into single integrated procedures, the system reduces the total number of separate signaling exchanges, thereby reducing overall processing time while maintaining connection reliability and security.
Data Source
AI summary
An access and mobility management function receives, from a session management function, a request to set up a communication with a wireless device for transmitting downlink data. The access and mobility management function sends, based on the request, to the base station, a first paging message for a closed access group (CAG) wireless device that is allowed to access CAG cells. The first paging message indicates transitioning the CAG wireless device from an idle state to a connected state. The first paging message comprises a parameter indicating whether the wireless device is allowed to access non-CAG cells.