Roaming UE URSP Rule Generation via Visited Network Guidance
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Solution Overview
Problem
In cellular communication networks, particularly during roaming, existing technologies face challenges in managing user equipment (UE) traffic effectively across different networks, leading to suboptimal user experience and quality of service due to mismatched user route selection policy (URSP) rules.
Innovation Solution
The solution involves the home network generating and sending optimized URSP rules to the UE based on guidance information from the visited network, allowing the UE to use the best possible URSP rules while roaming, which are a combination or update of the home network's rules and the visited network's rules, ensuring seamless traffic management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the home network uses its own URSP rules for roaming UE, then the home network's traffic management policy is maintained, but the quality of service may be suboptimal due to mismatch with the visited network's characteristics
Solution Approach 1:
The patent implements dynamic URSP rule generation where the home network creates visited-network-specific rules based on received guidance information. The system dynamically adapts the URSP rules according to the visited network's characteristics while maintaining home network policy control, resolving the contradiction between maintaining home network policy and adapting to visited network conditions.
Solution Approach 2:
The patent changes the parameters of URSP rules by incorporating visited network guidance information into the rule generation process. The home network modifies its standard URSP rules to include visited-network-specific parameters and characteristics, enabling optimal quality of service while maintaining policy control.
2Adaptability or versatility
If the visited network provides URSP rules directly to the UE, then the rules match the visited network characteristics, but the home network loses control over its users' traffic management policy
Solution Approach 1:
The patent introduces the home network as an intermediary between the visited network and the UE. The visited network provides guidance information to the home network, which then generates the final URSP rules and sends them to the UE. This intermediary role maintains home network control while incorporating visited network characteristics.
Solution Approach 2:
The patent segments the URSP rule generation process into distinct components: visited network guidance information, home network policy rules, and the final combined URSP rules. This segmentation allows the home network to maintain control over the policy aspect while incorporating visited network-specific parameters.
3Ease of manufacture
If generic URSP rules are used for roaming, then the system is simple to implement, but the user experience deteriorates due to mismatched traffic management
Solution Approach 1:
The patent implements preliminary action by having the visited network provide guidance information in advance about its network characteristics, supported features, and traffic management capabilities. This advance information allows the home network to generate optimized URSP rules before the UE actually roams, improving user experience while maintaining implementation feasibility.
Data Source
AI summary
The present application relates to improving a roaming service. In an example, a home network of a user equipment (UE) defines a first set of UE route selection policy (URSP) rules for managing traffic of the UE when connected to the home network. While roaming, the UE is connected to a visited network. Based on the first set of URSP rules and guidance information of the visited network indicating one or more URSP rules that the visited network can support for the UE, the home network defines a second set of URSP rules for managing traffic of the UE while roaming. The home network sends, via the visited network, the second set of URSP rules to the UE as rule information for use by the UE while connected to the visited network.