5G Network Registration with Integrated PDU Session and Slice Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G network registration procedures for User Equipment (UE) lack flexibility in supporting multiple network slices and services, leading to inefficiencies in resource allocation and management.
Innovation Solution
A registration procedure that utilizes Network Slice Selection Assistance Information (NSSAI) to enable UE to attach to multiple network slices with a single Access and Mobility Function (AMF), allowing for dedicated slice-specific resources and simplified network management, while combining Registration and PDU session establishment for reduced signaling and improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE performs separate registration and PDU session establishment procedures, then each procedure can be completed with dedicated processing, but the overall signaling overhead increases and registration time is extended
Solution Approach 1:
The patent combines the registration procedure and PDU session establishment procedure into a single integrated process. The network device processes both the registration request and PDU session establishment request together, allowing the UE to complete both procedures in one interaction cycle rather than two separate cycles, thereby reducing overall signaling overhead and registration time
2Productivity
If the network supports multiple network slices with dedicated resources, then service quality and resource allocation efficiency improve, but network complexity and management difficulty increase
Solution Approach 1:
The patent implements a universal network slice selection mechanism where the network device handles multiple network slices through a unified processing framework. The same network device can serve multiple slices and multiple UEs simultaneously using standardized procedures, avoiding the need for separate dedicated processing for each slice while maintaining resource allocation efficiency
Solution Approach 2:
The patent uses parameter-based network slice identification (S-NSSAI) that allows the network to differentiate and manage multiple slices through configuration parameters rather than structural complexity. The network device selects appropriate processing based on slice parameters included in the registration request, enabling flexible slice management without increasing fundamental system complexity
3Adaptability or versatility
If the network provides customized service support for different slices, then service adaptability improves, but the registration procedure complexity increases
Solution Approach 1:
The patent incorporates network slice selection information (S-NSSAI) and PDU session establishment parameters into the initial registration request before the actual registration processing begins. This preliminary inclusion of service requirements allows the network to prepare and configure appropriate slice resources in advance, enabling customized service support without complicating the registration procedure flow
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Implementations of a registration procedure are described. The registration procedure includes a Access and Mobility Function (AMF) selection procedure and a Session Management Function (SMF) selection procedure. The AMF receives a Non-Access Stratum (NAS) registration request pertaining a User Equipment (UE). At least partially in response to the registration request: the AMF registers the UE on the network; and establishes a Protocol Data Unit (PDU) session for the UE. The AMF transmits a registration response to the UE. An access node of the network receives a Radio Resource Control (RRC) registration request from a User Equipment (UE). At least partially in response to the registration request: The access node selects an AMF, and forwards a corresponding Non-Access Stratum (NAS) registration request to the selected AMF. The NAS registration request includes PDU session request information pertaining to the UE.