5G Residential Gateway Access Control via Subscription Data Segmentation
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Solution Overview
Problem
Current 5G network technologies face challenges in supporting access through both mobile and fixed networks, particularly in scenarios where user equipment needs to access the 5G core network via a residential gateway acting as a relay device, requiring enhanced methods for access management and policy control.
Innovation Solution
The proposed solution involves determining access types based on subscription data of the residential gateway, allowing user equipment to access the 5G core network through subscriber and non-subscriber access modes, with differentiated service management policies for host and guest policies, and utilizing network elements like UDM and AMF to manage access and subscription data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the 5G core network supports access through both mobile and fixed networks with relay devices, then network versatility and access modes are improved, but network complexity and policy control difficulty increase
Solution Approach 1:
The patent segments the access management process into distinct phases: initial access phase where the relay device establishes connection, and terminal access phase where the terminal device connects through the relay. This segmentation allows different policy controls for different phases, simplifying the overall complex access management while supporting multiple access modes.
Solution Approach 2:
The relay device acts as an intermediary between the terminal device and the 5G core network. It mediates the access process by establishing its own access context first, then facilitating terminal access through it. This intermediary role simplifies the network architecture by providing a standardized access point for multiple terminals, reducing direct complexity in the core network.
2Measurement precision
If differentiated service management policies are implemented for subscriber and non-subscriber access, then service control precision is improved, but policy management complexity increases
Solution Approach 1:
The patent applies local quality by implementing different policy control mechanisms at different locations in the network. The relay device's access context includes specific policy information for terminals accessing through it, while direct access terminals have their own policy contexts. This localized differentiation enables precise service control without requiring complex global policy management.
Solution Approach 2:
The system changes policy parameters based on access type (subscriber vs non-subscriber). Subscriber terminals receive policy parameters allowing full access and higher service priorities, while non-subscriber terminals receive restricted policy parameters. These parameter changes are automatically applied based on the terminal's subscription status, achieving precise service control through systematic parameter management rather than complex procedural controls.
3Adaptability or versatility
If multiple access modes are supported including relay device access, then network adaptability is improved, but access control difficulty increases
Solution Approach 1:
The relay device performs preliminary action by establishing its own access context and registering with the network before any terminal devices access through it. This preliminary registration includes providing identification information that the network uses to subsequently control terminal access. By performing this preliminary action, the system simplifies subsequent access control for multiple terminals through the same relay.
Solution Approach 2:
The system implements feedback mechanisms where the network receives access context information from the relay device including terminal identification and policy requirements. The network then provides policy decisions back to the relay device, which enforces these policies for terminal access. This feedback loop enables automated access control that adapts to different access modes without requiring manual intervention.
Data Source
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AI summary
Embodiments of this application disclose a network access method. The method may include: receiving, by a data management network element, a request message from an access and mobility management function network element, where the request message includes identification information of user equipment and identification information of a residential gateway connected to the user equipment; determining, by the data management network element, subscription data of the residential gateway based on the identification information of the residential gateway; determining, by the data management network element, a subscription type of the user equipment based on the subscription data of the residential gateway and the identification information of the user equipment; and sending, by the data management network element, indication information of the subscription type to the access and mobility management function network element, where the subscription type indicates a subscriber or a non-subscriber of the residential gateway. According to this solution, the UE can access a 5GC through the residential gateway and the 5GC can support more access modes. This improves convergence of a fixed network and a mobile network.