Restricted Local Operator Services Security Context
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Solution Overview
Problem
Current 5G communication systems face challenges in managing security for restricted local operator services, particularly in providing network access to unauthenticated user equipment and ensuring seamless operation during authentication failures or limited service states.
Innovation Solution
The implementation of a method that maintains a list of networks supporting restricted local operator services, checks conditions for access, and initiates a search to find suitable networks, sending security algorithm requests, and establishing a security context for unauthenticated user equipment to access these services, ensuring acceptance by the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If unauthenticated user equipment is allowed to access restricted local operator services, then service availability is improved, but security risk increases
Solution Approach 1:
The patent segments network services into authenticated services and restricted local operator services (RLOS). Unauthenticated UE can access only RLOS through a separate access path, while authenticated services remain protected. This segmentation allows service availability improvement without compromising overall security.
Solution Approach 2:
The patent introduces an intermediary mechanism where the network establishes a controlled security context for unauthenticated UE accessing RLOS. This intermediary security framework mediates between the need for service availability and security requirements, allowing limited access without full authentication.
2Reliability
If authentication procedures are enforced for all network access, then security is improved, but access time increases
Solution Approach 1:
The patent applies partial authentication action by allowing unauthenticated UE to access RLOS without completing full authentication procedures. The authentication process is made optional or partial for RLOS access, reducing access time while maintaining sufficient security through the specialized RLOS access mechanism.
3Reliability
If a comprehensive network search is performed to find suitable networks for RLOS, then service reliability is improved, but processing time increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring and maintaining a list of networks that support RLOS. This pre-prepared information allows the UE to quickly find suitable networks without performing comprehensive real-time searches, thus improving service reliability while minimizing processing time.
4Reliability
If security algorithms are negotiated with unauthenticated UE, then security context establishment is improved, but device complexity increases
Solution Approach 1:
The patent changes the parameters of security negotiation by using simplified security algorithm selection specifically for RLOS access. Instead of full authentication-based security negotiation, the system uses predetermined or simplified security parameters for unauthenticated UE, improving security context establishment while reducing protocol complexity.
Data Source
AI summary
Techniques for security management in communication systems are provided. For example, a method comprises maintaining a list of networks that support access for a set of restricted local operator services, checking whether a set of conditions for triggering access to the set of restricted local operator services is satisfied, receiving a request for access to the set of restricted local operator services, and initiating, upon satisfaction of the set of conditions, a search of the list of networks to find a network for access to the set of restricted local operator services.