Traffic Control Tagging for Guaranteed Bandwidth in 5G Backbone
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Solution Overview
Problem
In 5G networks, the existing transmission mode fails to ensure guaranteed bandwidth for users, leading to congestion and discarding of critical traffic, which affects end-to-end Quality of Service (QoS) due to the inability of the backbone network to distinguish and manage specific data flows effectively.
Innovation Solution
A traffic control method that involves adding a traffic control tag to excess bandwidth traffic, allowing the backbone network switching device to discard only the excess traffic based on congestion levels, thereby ensuring that guaranteed bandwidth traffic is maintained and efficiently utilized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the backbone network uses existing transmission mode without flow identification, then network device complexity is reduced, but guaranteed bandwidth for users cannot be ensured
Solution Approach 1:
The patent introduces traffic control tags as an intermediary mechanism that enables flow identification and QoS management in the backbone network without requiring complex flow identification capabilities at every network device. The tags act as mediators that carry QoS information through the network, allowing guaranteed bandwidth enforcement while maintaining relatively simple device architecture.
Solution Approach 2:
The patent changes the parameter of traffic identification from flow-based (requiring complex inspection) to tag-based (simple header field). By transforming the identification mechanism from analyzing IP quintuples to recognizing specific traffic control tags, the system achieves reliable QoS management with reduced device complexity.
2Reliability
If the backbone network implements flow-based QoS control, then guaranteed bandwidth can be ensured, but network resource overhead increases significantly
Solution Approach 1:
The patent extracts the QoS management function from the core forwarding plane and implements it through simple tag recognition and matching. Instead of performing complex flow analysis at each backbone network device, the system extracts only the essential QoS identification (via tags) and handles detailed management separately, thereby ensuring guaranteed bandwidth while minimizing network resource overhead.
Solution Approach 2:
The patent uses traffic control tags that are copied from the EPS network QoS parameters and attached to data flows. This copying mechanism allows the backbone network to inherit QoS requirements without重新 analyzing flows, ensuring guaranteed bandwidth while avoiding the overhead of repeated flow inspection and classification.
3Ease of operation
If all traffic is transmitted through the backbone network without differentiation, then ease of operation is improved, but congestion occurs and critical traffic is discarded
Solution Approach 1:
The patent segments traffic in the backbone network by introducing traffic control tags that differentiate between guaranteed bandwidth traffic and best-effort traffic. This segmentation allows the network to treat different traffic types differently during congestion, ensuring that critical tagged traffic is protected while maintaining simple overall operation through uniform tag-based handling.
Data Source
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AI summary
Embodiments of the present invention provide a traffic control method. A network device adds a traffic control tag to traffic that is over guaranteed bandwidth, or adds a traffic control tag to traffic of guaranteed bandwidth, and sends, to a backbone network switching device, a data flow that carries the traffic control tag. The backbone network switching device discards, according to the traffic control tag, the traffic that is over the guaranteed bandwidth. According to the foregoing solutions, traffic of guaranteed bandwidth of a user is ensured.