Non-Public Network Policy Routing for Device Registration
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Solution Overview
Problem
Existing wireless communication networks lack policies specifically configured for stand-alone public networks, leading to challenges in device registration and session establishment in non-public networks.
Innovation Solution
Implementing methods and apparatuses for managing policies in non-public networks, including access and mobility management functions, policy control functions, and devices that facilitate registration, policy association, and session establishment by using identifiers and route selection descriptors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stand-alone public networks are used without specific policies, then network simplicity is maintained, but device registration and session establishment in non-public networks fail or are inefficient
Solution Approach 1:
The patent segments policy configuration by network type, creating distinct policy sets for public networks and non-public networks. The AMF identifies whether a network is public or non-public and applies appropriate policies from segmented policy repositories, enabling reliable device registration in non-public networks without complicating the overall system with universal complex policies.
Solution Approach 2:
The patent implements preliminary action by pre-configuring specific policies for non-public networks in the UDM/UDR before devices attempt to register. When a device requests registration in a non-public network, the AMF proactively retrieves pre-prepared policies including N3IWF identifiers and route selection descriptors, enabling immediate successful session establishment without ad-hoc policy creation.
2Adaptability or versatility
If generic policies are applied to all networks, then policy management is simple, but specific non-public network requirements cannot be met
Solution Approach 1:
The patent implements dynamic policy management where the AMF determines the network type (public or non-public) at runtime and dynamically selects appropriate policies from different repositories. The system adapts its behavior based on network characteristics, retrieving specific non-public network policies including N3IWF identifiers when needed, while maintaining simple generic policy management for public networks.
Solution Approach 2:
The patent introduces the AMF as an intermediary between the device and policy repositories. The AMF mediates policy selection by identifying network type and retrieving appropriate policies from UDM/UDR, translating high-level network type identification into specific policy configurations including route selection descriptors and N3IWF identifiers for non-public networks.
3Loss of information
If no specific policy control function is implemented, then system complexity is reduced, but transparent policy transmission and route selection for non-public networks cannot be achieved
Solution Approach 1:
The patent implements a universal PCF that handles both public and non-public network policies through multi-functional policy structures. The PCF transmits policies containing both general network access information and specific non-public network elements (N3IWF identifiers, route selection descriptors) within a unified policy framework, enabling transparent policy transmission without requiring separate dedicated control functions.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for policies related to non-public networks. One method includes receiving, at an access and mobility management function, a request to register a device. The method includes, in response to receiving the request to register the device, transmitting, by the access and mobility management function, a user equipment subscription data request to a unified data management. The method includes, in response to transmitting the user equipment subscription data request to the unified data management, receiving a user equipment subscription data response including a first identifier wherein the first identifier identities a stand-alone non-public network. The method includes performing an access and mobility management policy association establishment with a policy control function based on the user equipment subscription data. The method includes transparently transmitting by the policy control function a policy based on the first identifier.