Anchor Entity Session Management for Packet Flow Identification
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Solution Overview
Problem
In scenarios where multiple third-party application functions address the same destination entity in a network using a single anchor entity, the Protocol Converter cannot accurately determine which application function a packet flow corresponds to, leading to incorrect forwarding of network events.
Innovation Solution
The proposed solution involves an information transmission method and apparatus where the anchor entity receives identity information of the third-party application function and the destination entity, establishes sessions, and forwards report events based on this information, ensuring correct identification and forwarding of packet flows by including identity information in the report events sent by the destination entity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single Protocol Converter is used to establish sessions with multiple application functions addressing the same PCRF, then resource sharing and system efficiency are improved, but the ability to accurately identify and forward packet flows to the correct application function deteriorates
Solution Approach 1:
The patent segments the identification information into two parts: session-level identification (sent to PCRF) and application function-level identification (embedded in report events). This segmentation allows the single Protocol Converter to handle multiple application functions while maintaining accurate flow identification by including the application function identifier in each report event sent to the corresponding application function.
2Device complexity
If multiple application functions share the same anchor entity, then device complexity is reduced, but the difficulty of detecting and measuring which flow corresponds to which application function increases
Solution Approach 1:
The patent implements a feedback mechanism where the anchor entity receives report events from the PCRF and forwards them to the correct application function based on the application function identifier included in each report event. This feedback loop ensures accurate flow detection and mapping without requiring complex additional structures at the anchor entity.
Data Source
AI summary
An information transmission method is provided. An apparatus receives a first session request from a third party application function, which includes identity information of the third party application function and identity information of a destination entity in a network. The apparatus establishes a first session with the third party application function; sends a second session request to the destination entity, which includes identity information of an anchor entity and the identity information of the third party application function. The apparatus establishes a second session with the destination entity; receives information reported by the destination entity, which includes a report event and identity information of the third party application function. The apparatus forwards the report event to the corresponding third party application function according to the identity information of the third party application function included in the information. Correct identification and forwarding of a packet flow is achieved.