Traffic Detection Function for Dynamic Data Flow Control
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Solution Overview
Problem
In existing evolved packet systems, the device on the access network side lacks the ability to dynamically control or adjust service status of data flows, affecting user experience and reducing service efficiency due to limited control over radio channel scheduling.
Innovation Solution
Implementing a Traffic Detection Function (TDF) in the access network to detect service status parameters such as congestion, resource utilization, and packet loss, and using a policy control node to configure policy rules based on these detection results, enabling dynamic control operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a device on the access network side only performs scheduling according to current radio channel status, then the scheduling operation is simple, but the service status of data flow cannot be dynamically controlled or adjusted
Solution Approach 1:
The patent segments the control system into two parts: a policy control node that generates and manages policy rules, and a traffic detection function (TDF) that executes these rules at the access network side. This segmentation allows the access network device to gain dynamic control capabilities through the TDF while keeping the complex policy management centralized at the policy control node.
Solution Approach 2:
The patent introduces a policy control node as an intermediary that bridges the gap between simple access network devices and the need for dynamic service control. The policy control node generates policy rules based on service requirements and network status, which are then executed by the TDF at the access network side, enabling dynamic control without complicating the base device structure.
2Productivity
If the access network device performs basic scheduling only, then the device operation is easy, but user experience and service efficiency are affected
Solution Approach 1:
The patent implements a self-service mechanism where the TDF automatically detects service data flows and executes policy rules based on real-time network conditions. The system autonomously adjusts service status without requiring manual intervention, improving service efficiency while maintaining operational simplicity through automated decision-making based on pre-configured policies.
Solution Approach 2:
The patent establishes a feedback loop where the TDF continuously monitors service data flows and network status, compares actual performance against policy rules, and dynamically adjusts scheduling decisions. This feedback mechanism enables the system to automatically optimize service efficiency based on real-time conditions without increasing operational complexity.
3Measurement precision
If no traffic detection function is implemented at the access network side, then the network structure is simple, but real-time service status detection and control are not possible
Solution Approach 1:
The patent extracts the traffic detection and policy execution functions into a separate TDF component at the access network side. This extracted function specifically handles service status detection and policy enforcement, providing precise measurement capabilities without significantly complicating the overall network structure, as the TDF operates as a dedicated functional module.
Data Source
AI summary
Embodiments of the present invention relate to the communications field, and provide a data flow transmission method and a device, which can improve flexibility of data flow control. The method includes: starting, by a TDF, detection on a service data flow; and performing, by the TDF, a corresponding operation according to a detection result; or, acquiring, by the TDF, a policy rule, and performing a corresponding operation according to a detection result and the policy rule. The embodiments of the present invention are used for data flow transmission.