SEPP Locality-Based Network Function Selection for Roaming Latency
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Solution Overview
Problem
Existing wireless communication networks face increased signaling latency during roaming due to the visiting network's inability to intelligently select appropriate network functions based on the mobile device's location, leading to inefficient authentication and data transmission processes.
Innovation Solution
Implementing a locality component in the security edge protection proxy (SEPP) that provides location information to the network repository function, enabling it to determine network function priorities based on the mobile device's location, thereby optimizing the selection of primary and secondary network functions for reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the visiting network uses traditional network function selection without locality information, then the network can maintain basic connectivity, but signaling latency increases during roaming authentication and data transmission
Solution Approach 1:
The SEPP performs preliminary actions by obtaining locality information about the mobile device before actual network function selection occurs. This advance preparation allows the network repository function to pre-identify suitable network functions based on location, eliminating the need for complex real-time selection processes and reducing signaling latency during authentication and data transmission.
2Productivity
If the network selects network functions without considering mobile device location, then the system maintains simplicity in selection logic, but authentication efficiency and data transmission speed decrease
Solution Approach 1:
The patent applies local quality by selecting network functions based on their geographic proximity to the mobile device's location. Instead of using a uniform selection criterion across all scenarios, the system tailors the network function selection to the specific local context of the device's position, thereby improving authentication efficiency and data transmission speed without requiring overly complex selection logic.
3Speed
If the visiting network implements intelligent network function selection based on locality information, then data transmission speed improves, but the complexity of the network function selection process increases
Solution Approach 1:
The SEPP acts as an intermediary that obtains locality information and facilitates its transmission to the network repository function. This intermediary role simplifies the overall system architecture by centralizing the complexity of location-based selection logic in a dedicated component, allowing the visiting network to implement intelligent network function selection while managing complexity through a specialized mediator rather than distributing it across multiple network elements.
Data Source
AI summary
Implementations are described herein for network edge protection using locality information. In some implementations, a security component of a primary network may receive, from a security component of a secondary network, a first network function discovery request. The security component of the primary network may generate a second network function discovery request that is based on the first network function discovery request and that includes location information. A network repository function of the primary network may determine, based on the location information, network function priority information for a plurality of network functions of the primary network. The network repository function may provide the network function discovery response to the security component of the primary network, and the security component of the primary network may send the network function discovery response to the security component of the secondary network.