Core Network Handover Across Nodes for Service Continuity
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Solution Overview
Problem
In 6G network architectures with coexisting centralized and distributed network forms, ensuring service continuity when a network node within the core network can no longer provide services to a terminal is a critical challenge.
Innovation Solution
A handover processing method where a first access network device sends a request to a second core network to transfer the terminal's services, involving different network nodes supporting mobility, session management, or user plane functions, with optional steps including obtaining information, establishing connections, and sending handover commands to ensure seamless service continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a centralized network node is used to provide network services, then service management efficiency is improved, but service continuity deteriorates when the network node fails
Solution Approach 1:
The patent segments the core network into multiple distributed network nodes, each capable of providing network services independently. When one node fails, other nodes can continue to provide services, ensuring service continuity while maintaining efficient service management through the distributed architecture.
Solution Approach 2:
The patent changes the operational parameters of the network by enabling dynamic service migration between different network nodes. This allows the system to adapt to node failures by transferring services to alternative nodes, thereby maintaining service continuity without compromising management efficiency.
2Reliability
If a distributed network architecture is used, then service continuity is improved, but network complexity increases
Solution Approach 1:
The patent implements universal functionality across distributed network nodes, where each node can perform multiple functions including service provisioning, service migration, and coordination. This multi-functionality reduces the need for specialized components, thereby managing complexity while maintaining service continuity.
Solution Approach 2:
The patent introduces intermediary mechanisms and protocols that facilitate coordination between distributed nodes. These intermediaries manage the complexity of inter-node communication and service migration, allowing the system to achieve service continuity without being overwhelmed by network complexity.
3Reliability
If handover processing is implemented between core networks, then service continuity is improved, but processing time increases
Solution Approach 1:
The patent performs preliminary actions by pre-establishing connections and preparing handover parameters before actual service migration is needed. This allows the handover process to execute quickly when triggered, minimizing processing time while ensuring service continuity.
Solution Approach 2:
The patent optimizes the handover process by skipping unnecessary processing steps and directly transferring services between nodes. This streamlined approach reduces handover processing time while maintaining the reliability of service continuity through essential coordination steps.
Data Source
AI summary
A handover processing method, an apparatus and a communication device are provided. The method of an embodiment of the present disclosure includes: in a case where a first core network is not able to provide network services to a terminal, a first access network device sends a handover request to a second core network, where the handover request is configured to request a handover of the terminal's services from the first core network to the second core network; first core network and the second core network respectively include different network nodes, and each network node supports one or more of a mobility management function, a session management function, or a user plane function.