Underlay Network Triggers Overlay Connectivity via URSP Rules
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Solution Overview
Problem
Existing technologies do not adequately address how an underlay network can trigger a user equipment (UE) to establish connectivity to an overlay network and send selected traffic to it, nor do they specify how the UE should apply conflicting UE Route Selection Policy (URSP) rules from both networks.
Innovation Solution
The UE apparatus is equipped with a processor and transceiver that receive a URSP rule from the underlay network, detect matching traffic, establish a data connection in the underlay network, establish connectivity to the overlay network via this connection, and send selected traffic to the overlay network. Additionally, the UE applies URSP rules from both networks to avoid conflicts and meet route selection requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE manually registers with multiple networks to access different services, then service accessibility is improved, but device complexity and user operation burden increase
Solution Approach 1:
The network automatically performs registration and route selection actions without requiring user intervention. The AMF network node subscribes to UE movement events and automatically triggers registration with hosting networks based on UE location, eliminating the need for users to manually manage multiple network registrations while maintaining service accessibility across different networks
Solution Approach 2:
The system implements event-driven feedback mechanisms where the AMF subscribes to UE movement events and automatically responds by triggering registration with appropriate hosting networks. This feedback loop enables the system to adapt to UE location changes and automatically manage network registrations based on real-time conditions
2Adaptability or versatility
If the UE establishes connectivity to overlay network via underlay network, then service accessibility is improved, but conflict between URSP rules from both networks increases
Solution Approach 1:
The system performs preliminary route selection by the hosting network before UE traffic routing. The AMF receives URSP rules from both underlay and overlay networks in advance, evaluates them, and determines the appropriate routing path before traffic flows, preventing rule conflicts rather than resolving them after they occur
Solution Approach 2:
The AMF network node acts as an intermediary that receives and coordinates URSP rules from both underlay and overlay networks. It evaluates rules from both networks, determines routing priority, and manages the interaction between conflicting rules, preventing conflicts from reaching the UE
3Reliability
If manual network registration is required for each service, then network security is maintained, but ease of operation deteriorates
Solution Approach 1:
The network automatically performs security registration actions without user intervention. The AMF subscribes to UE movement events and automatically triggers secure registration with hosting networks based on location, maintaining network security protocols while eliminating the need for users to manually initiate registration processes
Solution Approach 2:
The system performs preliminary secure registration automatically based on UE location and service requirements. The AMF evaluates URSP rules and pre-establishes secure connections with appropriate hosting networks before users attempt to access services, maintaining security while improving operational ease
Data Source
AI summary
A user equipment, UE, apparatus comprising: a transceiver arranged to communicate with a first mobile network; and a processor arranged to: receive a UE Route Selection Policy, URSP, rule from the first mobile network (e.g. an underlay network), wherein the URSP rule indicates traffic that is to be sent to a second mobile network (e.g. an overlay network) via the first mobile network; detect traffic that matches the URSP rule; establish, using the transceiver, a first data connection in the first mobile network based on the URSP rule; establish, using the transceiver, connectivity to the second mobile network via the first data connection; and send, using the transceiver, selected traffic to the second mobile network via the established connectivity to the second mobile network, the selected traffic being the traffic that matches the URSP rule.