Wireless Device SNPN Access with Location Validity Checks
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Solution Overview
Problem
Existing wireless communication systems lack efficient mechanisms for wireless devices to selectively access standalone non-public networks (SNPNs) based on location validity conditions, leading to suboptimal network selection and potential security vulnerabilities.
Innovation Solution
A method where a wireless device sends a NAS message to an AMF indicating support for enhanced steering of roaming (SOR) to access a SNPN, receives location validity conditions, and sends a registration request upon meeting those conditions, enabling secure and location-based network access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless devices can access any SNPN without location validity conditions, then network access flexibility is improved, but security vulnerabilities increase
Solution Approach 1:
The patent applies location validity conditions that are specific to each SNPN, allowing different access rights for different networks based on their geographical and operational characteristics. This enables flexible network selection while maintaining security through network-specific location constraints.
Solution Approach 2:
The patent requires wireless devices to check location validity conditions before accessing an SNPN. The AMF verifies these conditions in advance (prior to actual network access) to prevent unauthorized access, thereby addressing security concerns before they can manifest.
2Object-affected harmful factors
If wireless devices check location validity conditions before accessing SNPN, then security is improved, but access procedure complexity increases
Solution Approach 1:
The patent introduces the AMF (Access and Mobility Management Function) as an intermediary that handles the verification of location validity conditions. This shifts the complexity from the wireless device to the network side, where the AMF performs the verification and communicates the result to the device, simplifying the device's role while maintaining security.
3Reliability
If location validity conditions are enforced for SNPN access, then unauthorized access is prevented, but network selection efficiency decreases
Solution Approach 1:
The patent performs location validity condition verification in advance, before the wireless device attempts to access the SNPN. The AMF checks these conditions during the registration or connection establishment phase, so that when access is granted, the device can proceed directly to network attachment without additional verification delays, thus maintaining efficiency.
Solution Approach 2:
The patent implements a feedback mechanism where the AMF provides information about location validity to the wireless device. If the location is valid, the device receives authorization to proceed; if not, it is rejected. This clear feedback loop enables efficient decision-making by the device without requiring continuous verification during the access process.
Data Source
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Figure 3
AI summary
A wireless device receives, from a first network, network access information comprising an identifier of a second network and one or more parameters indicating a condition for determining whether the wireless device is allowed to access the second network. The wireless device determines that the condition is met, and sends, to the second network and based on the determining, a second registration request message.