Redundant User Plane Paths Across Distributed 5G Network Nodes
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Solution Overview
Problem
Existing redundant transmission methods in 5G networks are limited to a single network node, which does not support the distributed architecture of modern networks, necessitating a solution for establishing redundant transmission across different network nodes.
Innovation Solution
The method involves determining a second network node to establish a second user plane path between a terminal and a data network through a different network node, utilizing information from various network nodes or a centralized node to facilitate redundant transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant transmission is established within a single network node, then the transmission reliability is improved, but the adaptability to distributed network architecture deteriorates
Solution Approach 1:
The patent segments the redundant transmission function across multiple network nodes instead of confining it to a single node. The method establishes separate user plane paths through different network nodes (first network node and second network node), allowing each node to independently handle portions of the redundant transmission, thereby achieving both reliability and distributed architecture adaptability
Solution Approach 2:
The patent makes the redundant transmission mechanism universal by designing it to work with distributed network architecture. The method enables the system to perform redundant transmission through multiple network nodes while maintaining compatibility with modern distributed network structures, making the solution applicable to both traditional and contemporary network architectures
2Reliability
If two separate and disjoint user plane paths are established through two RANs to a same DN, then the transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The patent merges the control and management functions for redundant transmission into a unified process. The network node determines capability information indicating redundant transmission support, then establishes both user plane paths through a coordinated procedure, reducing the complexity that would arise from completely separate establishment processes for each path
3Adaptability or versatility
If capability information for redundant transmission is determined through multiple network nodes, then the adaptability to distributed architecture is improved, but the information exchange complexity increases
Solution Approach 1:
The patent uses an intermediary approach where the first network node acts as a mediator to obtain capability information from the terminal and share it with the second network node. This intermediary mechanism simplifies the information exchange process compared to direct peer-to-peer communication between multiple network nodes, reducing the overall complexity while maintaining distributed architecture adaptability
Data Source
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AI summary
Provided in the present application are a method, device and apparatus for establishing redundant transmission. The method is applied to a first access network device, and comprises: when a terminal expects to establish redundant transmission, determining a second network node, wherein a first user plane path has been established between the terminal and a data network (DN) by means of a first network node; and establishing a second user plane path between the terminal and the DN by means of the second network node, wherein the first user plane path and the second user plane path are used for establishing redundant transmission.