UE Access Network Selection for Service-Aware Data Routing
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Solution Overview
Problem
Conventional systems fail to define User Equipment (UE) Route Selection Policy (URSP) rules when 3GPP and non-3GPP access networks belong to different Public Land Mobile Networks (PLMNs, leading to suboptimal data routing that degrades user experience due to unavailable network services or parameters.
Innovation Solution
The UE determines availability of network services in both 3GPP and non-3GPP access networks and selects the optimal network for data routing based on service availability and parameters, such as latency and bandwidth, when registered on both simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If data is always routed to non-3GPP access network, then routing simplicity is improved, but service availability deteriorates when required network services are not supported
Solution Approach 1:
The patent implements dynamic access network selection by introducing a priority indicator mechanism that allows the UE to flexibly switch between 3GPP and non-3GPP access networks based on service requirements. The network can dynamically adjust routing preferences through updated priority indicators, transforming the static always-routed-to-non-3GPP approach into a dynamic selection process that maintains both simplicity and service availability.
Solution Approach 2:
The patent changes the routing parameter from a fixed destination (always non-3GPP) to a configurable priority indicator that can take different values. By modifying the priority indicator parameter, the system can adapt routing behavior to match service requirements, resolving the contradiction between routing simplicity and service availability.
2Reliability
If data is always routed to 3GPP access network based on operator preference, then service reliability is improved, but routing flexibility deteriorates
Solution Approach 1:
The patent introduces dynamic routing flexibility by allowing the UE to request priority indicators for different access networks and switch routing based on service requirements. This transforms the static operator-preferred routing into a dynamic system that maintains reliability while adapting to different service needs.
Solution Approach 2:
The network performs preliminary configuration by providing priority indicators to the UE before data transmission. This allows the UE to make informed routing decisions in advance, maintaining service reliability through operator-preferred defaults while enabling flexibility when the UE requests alternative routing for specific services.
3Ease of manufacture
If URSP rules are applied from home PLMN in visited PLMN, then configuration simplicity is improved, but routing precision deteriorates when home PLMN rules are not optimal for visited network conditions
Solution Approach 1:
The patent implements preliminary configuration by allowing the home PLMN to provide default URSP rules and priority indicators to the UE before the UE visits another PLMN. This preliminary setup maintains configuration simplicity while enabling the visited PLMN to provide local optimizations when needed, resolving the contradiction between simplicity and precision.
Solution Approach 2:
The patent enables local optimization by allowing the visited PLMN to provide network-specific priority indicators that override or supplement home PLMN URSP rules. This creates a layered approach where default home PLMN configuration provides simplicity, while local visited PLMN adjustments provide routing precision for specific network conditions.
4Loss of time
If access network selection is based solely on connection availability, then selection speed is improved, but service quality deteriorates when selected network does not support required services
Solution Approach 1:
The patent implements preliminary service capability assessment by having the network provide priority indicators that reflect service availability information before the UE makes routing decisions. This preliminary information provision allows the UE to make fast selections based on pre-evaluated service quality, resolving the contradiction between selection speed and service quality.
Solution Approach 2:
The patent introduces feedback mechanisms where the network provides priority indicator information to the UE based on current service availability and network conditions. This feedback loop enables the UE to make informed rapid decisions that balance selection speed with service quality by relying on pre-collected network intelligence.
Data Source
AI summary
A method of selecting access network for routing data of user equipment (UE) is provided. The method includes receiving trigger indicating a requirement of one or more network services. Further, the method includes determining that a UE is registered on a Third Generation Partnership Project (3GPP) access network and a non-3GPP access network simultaneously. The method includes identifying availability of one or more network services in the 3GPP access network and the non-3GPP access network. Thereafter, the method includes selecting one of, the 3GPP access network and the non-3GPP network, based on availability of one or more network services in one of, the 3GPP access network and the non-3GPP access network, or selecting one of, the 3GPP access network and the non-3GPP network based on one or more network parameters, when one or more network services are available in the 3GPP access network and the non-3GPP access network.