Access Gateway Fixed Network Packet Routing
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Solution Overview
Problem
In the 5G fixed-mobile convergence network architecture, there is no existing solution for correctly sending fixed network packets from a terminal on the fixed network side to a user plane function network element in the core network.
Innovation Solution
An access gateway device is configured to receive fixed network packets with session characteristic information and send them to a user plane function network element through a specific interface, using information about the interface corresponding to the session characteristic information, such as GTP-U and TEID, to ensure correct routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no interface information is provided for fixed network packets, then the network architecture remains simple, but the packets cannot be correctly routed to the user plane function network element
Solution Approach 1:
The patent applies preliminary action by establishing the association between fixed network session characteristic information and first interface information in advance through signaling interaction before actual packet transmission. The access gateway device obtains interface information (including tunnel information) from the user plane function network element through preliminary signaling exchanges, so that when fixed network packets arrive, the routing information is already prepared and stored, enabling immediate correct routing without real-time lookup delays.
Solution Approach 2:
The patent uses fixed network session characteristic information as an intermediary key to associate and identify the corresponding first interface information. This intermediary mechanism allows the access gateway device to efficiently map incoming packets to their destination interfaces through the characteristic information carried in the packets, which serves as a bridge between the packet and the routing information without requiring complex direct matching.
2Reliability
If fixed network packets are transmitted without session characteristic information, then transmission is faster, but correct identification and routing to the user plane function cannot be achieved
Solution Approach 1:
The patent applies preliminary action by pre-establishing the association between fixed network session characteristic information and first interface information through signaling interaction before actual packet transmission. The access gateway device obtains interface information (including tunnel information) from the user plane function network element through preliminary signaling exchanges, so that when fixed network packets arrive, the routing information is already prepared and stored, enabling immediate correct routing without real-time lookup delays.
Solution Approach 2:
The patent implements feedback by using the fixed network session characteristic information carried in transmitted packets to verify and confirm correct routing. The system monitors whether packets with specific characteristic information reach the intended user plane function network element, and this feedback information is used to maintain and update the association relationships, ensuring continuous accurate routing while maintaining transmission efficiency.
Data Source
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AI summary
This application provides a fixed network packet sending method, an apparatus, and a system. The method includes: after receiving a fixed network packet carried in a first fixed network session, an access gateway device may obtain fixed network session characteristic information carried in the fixed network packet, and determine, based on the fixed network session characteristic information, information about a first interface corresponding to the fixed network session characteristic information, so as to send the fixed network packet to a user plane function network element based on the information about the first interface. In this way, the fixed network packet is correctly sent to the user plane function network element.