QoS Resource Allocation via Terminal Service Recognition
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Solution Overview
Problem
In the 3GPP PCC architecture, the PCRF cannot obtain terminal service information from encrypted service data flows, leading to inaccurate policy formulation and QoS control, as existing methods like deep packet inspection or recognizing service information by the AF are not effective due to network security constraints.
Innovation Solution
The terminal recognizes its service information and sends it to the AF, which then forwards this information to the PCRF using new logical interfaces, enabling the AF to request and manage QoS resource allocation accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the PCRF parses terminal service data flow to obtain terminal service information, then the service information can be obtained, but the method becomes ineffective when service data flow is encrypted for network security
Solution Approach 1:
The patent introduces an AF (Application Function) as an intermediary between the terminal and PCRF. The AF receives service information from the terminal directly through a new logical interface, bypassing the encrypted data flow, and forwards it to the PCRF. This intermediary solution resolves the contradiction by providing an alternative information path that doesn't rely on parsing encrypted traffic.
2Measurement precision
If deep packet inspection is used to recognize service information in encrypted data flow, then service information can be extracted, but network security constraints make this method ineffective
Solution Approach 1:
Instead of trying to extract service information from the encrypted data flow (bottom-up approach), the patent inverts the approach by having the terminal directly provide service information to the AF (top-down approach). This inversion bypasses the encryption barrier entirely by changing the information flow direction and source.
3Loss of information
If new logical interfaces are added between terminal and AF, and AF and PCRF, then service information can be transmitted accurately, but the network architecture complexity increases
Solution Approach 1:
The patent segments the information transmission path into two separate logical interfaces: one between terminal and AF, and another between AF and PCRF. This segmentation allows each interface to be optimized independently and maintains modularity, reducing the impact of added complexity while improving transmission accuracy.
Data Source
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AI summary
Embodiments of the present invention provide a QoS resource allocation method and apparatus. The method includes: First, service information sent by a terminal is received; then, a QoS resource request message that carries the service information is sent to a PCRF corresponding to the terminal, where the QoS resource request message is used to request the PCRF to allocate a QoS resource to a terminal service; and finally, a request response message that is sent by the PCRF and that is used to indicate whether the QoS resource is successfully allocated to the terminal service is received. The terminal can recognize the service information of the terminal service, and a specific implementation of sending, to the PCRF, the service information that is of the terminal service and that is recognized by the terminal is put forward, so that accuracy of a policy formulated by the PCRF is improved.