AMF Registration and PDU Session Establishment for SNPN Onboarding
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Solution Overview
Problem
There is a need for an efficient method and apparatus to register user equipment (UE) and establish a protocol data unit (PDU) session in a non-public network (NPN), particularly for UE onboarding, to reduce resource waste in mobile communication systems.
Innovation Solution
A method and apparatus are provided for registering a UE and establishing a PDU session in a standalone non-public network (SNPN), involving the access and mobility management function (AMF) entity, which receives a registration request from the UE, selects a session management function (SMF) entity, and establishes a restricted PDU session for remote provisioning of the UE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate procedures are used for UE registration and PDU session establishment, then each procedure can be performed independently with standard protocols, but the overall onboarding process takes longer and consumes more network resources
Solution Approach 1:
The patent combines the UE registration procedure and PDU session establishment procedure into a single integrated process. The AMF entity performs both registration acceptance and PDU session establishment in one interaction sequence, eliminating the need for separate procedural steps and reducing overall onboarding time and resource consumption.
Solution Approach 2:
The AMF entity performs preliminary actions by pre-establishing the PDU session context during the registration phase itself. By preparing and configuring the PDU session parameters in advance as part of the registration flow, the system eliminates subsequent setup delays and enables immediate data transmission after onboarding.
2Loss of energy
If separate procedures are used for UE registration and PDU session establishment, then protocol implementation can be simplified and standardized, but network resource consumption increases due to redundant signaling
Solution Approach 1:
The patent merges the registration and PDU session establishment procedures into a single integrated flow within the AMF entity. This combination eliminates redundant signaling messages and reduces network resource consumption by processing both functions in one coordinated sequence rather than as separate independent procedures.
3Adaptability or versatility
If standard separate registration and session establishment procedures are used, then compatibility with existing networks is maintained, but service provisioning speed for NPNs is reduced
Solution Approach 1:
The AMF entity performs preliminary configuration of PDU session parameters during the registration phase itself. By pre-configuring session management contexts, QoS parameters, and data network associations in advance as part of the registration flow, the system enables immediate service provisioning without subsequent setup delays, thereby increasing service provisioning speed while maintaining protocol compatibility.
Data Source
AI summary
A method for an access and mobility management function (AMF) to register a user equipment (UE) and establish a session in a standalone non-public network (SNPN) is provided. The method includes receiving a registration request message from the UE through a base station, wherein the registration request message includes an onboarding indication, an onboarding subscriber concealed identifier (SUCI) set to “SNPN onboarding,” and default UE credentials, selecting a session management function (SMF) to establish a restricted protocol data unit (PDU) session for remote provisioning of the UE, transmitting a PDU session establishment request message to the selected SMF, receiving a PDU session establishment response message including information indicating PDU session establishment acceptance and a PDU session identifier (ID) from the SMF, and transmitting a message indicating UE registration and PDU session establishment acceptance to the UE through the base station.