Location Based Network Access Management for Satellite Regulatory Compliance
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Solution Overview
Problem
Existing technologies do not provide efficient network selection and access control in cross-border scenarios, particularly in satellite access and backhaul situations, where regulatory compliance, emergency call routing, and lawful interception are challenging.
Innovation Solution
Implement location-based network access management through enhanced registration reject messages, network selection assistance information, and UE behaviors to ensure compliance with local regulations and facilitate network selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite coverage is used to provide mobile network access across multiple countries, then network coverage area is improved, but regulatory compliance complexity increases
Solution Approach 1:
The patent segments the satellite network access by country borders by determining the UE's location country and comparing it with the PLMN's country code. This segmentation allows the system to apply country-specific regulatory rules, where the AMF rejects registration requests if the UE's location country does not match the PLMN's country code, thereby managing regulatory compliance complexity through structured segmentation.
2Productivity
If the AMF rejects registration requests with detailed cause values and network selection assistance information, then network selection efficiency is improved, but message complexity increases
Solution Approach 1:
The patent applies preliminary action by including network selection assistance information in the REGISTRATION REJECT message before the UE needs to select a new PLMN. The AMF provides hints such as MCC or PLMN codes that guide the UE's subsequent network selection, allowing the UE to efficiently choose an appropriate network without extensive trial-and-error registration attempts.
Solution Approach 2:
The patent implements feedback by providing the UE with specific cause values and network selection assistance information in the REGISTRATION REJECT message. This feedback loop enables the UE to understand why registration was rejected and what networks to try next, improving overall network selection efficiency through informed decision-making.
3Measurement precision
If the UE memorizes rejected PLMN information for extended periods, then network selection accuracy is improved, but device memory requirements increase
Solution Approach 1:
The patent applies dynamics by making the UE's memorization of rejected PLMN information time-dependent and location-dependent. The UE stores rejected PLMN info with an associated timer and location context, automatically updating or clearing this information based on current location and elapsed time. This dynamic approach maintains high network selection accuracy while adapting memory usage to actual operational needs.
Data Source
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AI summary
There are provided measures for location based network access management. Such measures exemplarily comprise receiving a rejection message indicative of rejection of access of said mobile terminal to a first mobile network, checking for a cause of said rejection of access of said mobile terminal to said first mobile network, and affecting, if said cause of said rejection of access of said mobile terminal to said first mobile network is indicative of that said mobile terminal is not allowed to access to said first mobile network from a determined location of said mobile terminal, a selection of a second mobile network to be accessed based on a content of said rejection message.