Core Network Interaction for UE-to-Network Relay Authentication
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Solution Overview
Problem
The interaction mechanism between relay AMF and remote AMF entities in UE-to-network relay communication architectures is not adequately addressed in existing 5G_ProSe technologies.
Innovation Solution
A device interaction method and core network device are introduced, enabling a first core network device to receive identifier information of UEs and interact with a second core network device based on this information, allowing determination and interaction with the appropriate core network device serving a UE, thereby facilitating interaction between relay and remote core network devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a relay AMF entity and a remote AMF entity are introduced for UE-to-network relay communication, then the communication capability is enhanced, but the interaction mechanism between AMF entities becomes unclear and complex
Solution Approach 1:
The patent introduces identifier information as an intermediary element that mediates the interaction between relay AMF entity and remote AMF entity. The first core network device receives identifier information of UE from the second core network device, and uses this identifier to determine which core network device serves the UE. This intermediary mechanism simplifies the interaction by providing a clear reference point (identifier) that both AMF entities can use to establish communication without complex direct negotiation.
Solution Approach 2:
The patent enables core network devices to self-determine their roles and relationships through identifier information. The first core network device autonomously determines the serving core network device for UE based on the received identifier information, without requiring complex external coordination. This self-service approach reduces interaction complexity by allowing each AMF entity to independently resolve its relationship with other AMF entities using the identifier as a key.
2Productivity
If identifier information of UE is received and used to determine serving core network device, then the interaction efficiency is improved, but the information processing requirement increases
Solution Approach 1:
The patent extracts only the essential identifier information from the complex UE context and uses this extracted key element for core network device determination. Instead of processing entire UE context or multiple redundant parameters, the system isolates and utilizes only the critical identifier information, significantly reducing information processing load while maintaining interaction efficiency. This extraction principle allows rapid determination of serving core network devices without being burdened by unnecessary data.
Data Source
AI summary
Embodiments of this application provide a device interaction method and a core network device. The method includes: receiving, by a first core network device, identifier information of at least one UE sent by a first device, where the at least one UE includes at least one of the following: a UE that has established UE-to-network relay connection with a first UE and a UE that is to establish UE-to-network relay connection with the first UE; and interacting, by the first core network device based on identifier information of a second UE, with a second core network device, where the second UE is any one of the at least one UE; where the first core network device is a core network device serving the first UE, and the second core network device is a core network device serving the second UE.