NPN UE Parameter Updates via AMF–UDM Coordination
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Solution Overview
Problem
Existing communication systems face challenges in efficiently managing and updating non-public network (NPN) information for user equipment (UE) due to the increasing complexity and diversity of 5G and beyond mobile communication technologies, particularly in supporting enhanced services and devices.
Innovation Solution
A method and apparatus are provided to update UE parameters, including preferred SNPN and group identifiers for network selection, through interactions between the UE, access and mobility management function (AMF), and unified data management (UDM), ensuring efficient management of NPN-related information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If NPN information is stored and updated in UDM for each UE, then network selection capability and service support are improved, but data management complexity and signaling overhead increase
Solution Approach 1:
The patent segments NPN information management by introducing specific data structures (PreferredSNPN-Identity and GINs) that separate network selection data from general UE subscription data. This segmentation allows the UDM to manage NPN-specific information independently, reducing overall data management complexity while maintaining enhanced network selection capabilities.
Solution Approach 2:
The patent adds a new dimension to data management by introducing group identifiers (GINs) that organize UEs into groups with common NPN requirements. This dimensional organization allows efficient batch updates and group-based management, reducing the complexity of individual UE management while maintaining comprehensive network selection support.
2Measurement precision
If NPN update information is transmitted to UE during registration, then network selection accuracy is improved, but registration signaling overhead and processing time increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring NPN information (PreferredSNPN-Identity and GINs) in the UDM during UE registration. This allows the network to have NPN selection data ready in advance, enabling accurate network selection without requiring additional signaling exchanges during active communication, thus reducing overall processing time.
Solution Approach 2:
The patent enables self-service by allowing the UE to autonomously use the NPN information received during registration to perform network selection independently. The UE stores and applies the PreferredSNPN-Identity and GINs locally, eliminating the need for continuous network assistance and reducing signaling overhead during operation.
Data Source
AI summary
Disclosed is a method, performed by an access and mobility management function, of providing a user equipment (UE) with update information regarding at least one UE parameter. The method includes receiving, from the UE, a registration request message, transmitting, to a unified data management (UDM), a UE context management registration message based on the registration request message, receiving, from the UDM, update information regarding the UE parameter, in response to the UE context management registration message, wherein the update information regarding the UE parameter includes information regarding preferred SNPN and information regarding a list of group identifiers for network selection (GINs), and transmitting, to the UE, the update information regarding the UE parameter including the information regarding preferred SNPN and the information regarding the list of GINs.