Route Selection Policy Rules for Visited Networks
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Solution Overview
Problem
Existing UE Route Selection Policy Rules can only be set by the Home PLMN and are applied universally by a UE without regard for the visited PLMN it is registered with.
Innovation Solution
Implementing procedures for user equipment and network nodes to receive and apply route selection policy rules that include a network identity, allowing the UE to tailor route selection based on the identity of the network it is registered with.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UE applies URSP rules universally without network identity distinction, then the rule application process is simple, but the adaptability to different networks is poor
Solution Approach 1:
The patent segments the route selection process by introducing network identity as a segmentation criterion. URSP rules are now applied separately for home network and visited network scenarios, allowing the UE to select appropriate rules based on the current network context. This segmentation enables network-specific adaptability while maintaining clear, manageable rule sets for each network type.
Solution Approach 2:
The patent introduces dynamic rule application where the UE determines whether it is in home or visited network and applies corresponding URSP rules accordingly. The system dynamically selects between different rule sets based on network conditions, allowing adaptability to change without requiring complex static configurations for all possible scenarios.
2Adaptability or versatility
If Home PLMN sets URSP rules for all scenarios, then the rule management is centralized and simple, but the flexibility for visited network specific routing is limited
Solution Approach 1:
The patent segments rule management authority between Home PLMN and Visited PLMN. Home PLMN maintains centralized control for home network routing, while Visited PLMN gains authority to set rules for visited network scenarios. This segmentation allows each network to manage rules flexibly for its specific requirements without creating a single complex centralized system.
Solution Approach 2:
The patent applies local quality by allowing Visited PLMN to set URSP rules specifically tailored to visited network conditions and requirements. Each network can optimize routing rules for its local characteristics, infrastructure, and service requirements, rather than applying uniform rules from a single centralized source.
3Manufacturing precision
If URSP rules do not include network identity, then the rule structure is simple, but the precision of route selection for specific networks is poor
Solution Approach 1:
The patent applies preliminary action by including network identity information in advance within the URSP rule structure. The network identity is predetermined and embedded in each rule, allowing the UE to quickly match current network conditions with appropriate rules without complex real-time analysis, thus achieving precise route selection efficiently.
Data Source
AI summary
There is provided a user equipment apparatus registered with a first wireless communication network, the first wireless communication network identified by a first network identity. The user equipment apparatus comprises a receiver and a processor. The receiver is arranged to receive a route selection policy rule, the route selection policy rule including: an application descriptor, and a route selection descriptor, the route selection descriptor comprising a network identity. The processor is arranged to detect application traffic that matches the application descriptor and determine the network identity of the route selection descriptor matches an identity of the first wireless communication network. The processor is further arranged to apply the route selection descriptor to the detected application traffic upon determining the network identity of the route selection descriptor matches the identity of the first wireless communication network.