UE Network Selection for Non-Public Networks
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Solution Overview
Problem
The 5G system lacks clarity in network selection and connection mode for user equipment (UE) when connecting to and registering with a non-public network (NPN), especially in cases where the UE does not hold information about the NPN.
Innovation Solution
A user equipment (UE) with default credentials selects a stand-alone non-public network (SNPN) as the onboarding network and performs a protocol data unit (PDU) session establishment procedure to determine the appropriate network selection and connection mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the UE uses default credentials to connect to an NPN, then the connection can be established without prior NPN information, but the network selection and connection mode remain unclear
Solution Approach 1:
The UE autonomously determines network selection and connection mode by checking whether it is configured with default UE credentials, without requiring external guidance or complex configuration procedures. The controller automatically selects SNPN as the onboarding network and initiates PDU session establishment when default credentials are detected, enabling self-service operation.
2Adaptability or versatility
If the UE connects to an onboarding network without prior NPN information, then the initial connection can be established, but clarity in network selection and connection mode is lost
Solution Approach 1:
The system performs preliminary determination of network selection and connection mode by detecting the presence of default UE credentials before actual connection establishment. This preliminary action ensures that the UE knows which network type (SNPN) to select and what connection procedure (PDU session establishment) to initiate, maintaining information clarity before the connection process begins.
Data Source
AI summary
Although a user equipment (UE) needs to connect to and register with a non-public network (NPN) in a 5G system (5GS), the UE does not hold information regarding the NPN, and network selection to be performed and a connection mode of the UE are unclear in a case that the UE connects to and registers with an ON. Communication means for providing NPN information to a UE in a case that the UE needs to connect to and register with an NPN in the 5G system (5GS) is implemented and means for determining network selection to be performed and a connection mode of the UE in a case that the UE connects to and registers with an ON is provided.