5G LAN Routing Across Session Management Boundaries
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Solution Overview
Problem
Current 5G local area network (5GLAN) services lack a solution for implementing private communication across session management network elements when terminals are far apart, requiring different session management and user plane function elements for data transmission.
Innovation Solution
A service management network element determines path information based on local area network indications to configure routing rules for user plane elements, enabling private communication across session management network elements by routing data through designated user plane elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If different session management network elements are selected for terminals far from each other, then point-to-point data transmission with wide coverage is provided, but private communication across session management network elements cannot be implemented
Solution Approach 1:
The patent introduces a service management network element as an intermediary that coordinates between different session management network elements. This mediator establishes routing rules that enable private communication across session management boundaries while maintaining wide coverage, resolving the contradiction between area and reliability
2Area of stationary object
If different user plane function network elements are selected for data transmission, then wide coverage is achieved, but routing complexity increases
Solution Approach 1:
The patent segments the network into distinct control plane (service management, session management) and user plane components. By separating routing rule configuration from data transmission, the system achieves wide coverage through multiple user plane elements while reducing routing complexity through centralized rule management
Solution Approach 2:
The service management network element acts as an intermediary that simplifies routing complexity by centrally configuring routing rules between different user plane function elements, allowing wide coverage without proportionally increasing routing complexity
Data Source
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AI summary
Embodiments of this application provide a local area network communication method, a device, and a system, to implement private communication across session management network elements for a local area network service. The method includes: determining, by a service management network element based on indication information of a local area network, first path information associated with a first address, where the first path information is used by a second user plane network element to route data whose destination address is the first address to a first user plane network element, and the first user plane network element provides access to the local area network for a terminal corresponding to the first address; and sending, by the service management network element, a first message to a second session management network element, for configuring a first routing rule on the second user plane network element, where the first routing rule includes the indication information of the local area network, the first address, and the first path information.