AGF Session Identification for Multi-PDU 5G Wireline Access
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Solution Overview
Problem
Existing techniques for handling multiple PDU sessions in 5G client devices over wireline access face challenges in uniquely identifying sessions, leading to misrouting, loss of data packets, and resource wastage due to network attacks, requiring expensive modifications to the access network.
Innovation Solution
An access gateway function (AGF) processes encapsulated packets to determine identification information for both the client device and PDU sessions, enabling secure and efficient routing without modifying the access network infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current techniques are used to handle multiple PDU sessions, then device connectivity is maintained, but data packet misrouting and spoofing occur, wasting resources
Solution Approach 1:
The patent segments the handling of PDU sessions by introducing unique identification information that distinguishes individual sessions within a wireline access connection. This segmentation allows the network device to process and route each PDU session independently, preventing misrouting while avoiding the resource wastage associated with blanket handling approaches.
Solution Approach 2:
The patent implements preliminary action by establishing unique identification information for each PDU session before data transmission occurs. This pre-configuration enables the network device to correctly identify and route packets from the outset, preventing misrouting and spoofing attacks before they can consume network resources.
2Adaptability or versatility
If access network modifications are implemented to support multiple PDU sessions, then session management capability is improved, but network cost increases
Solution Approach 1:
The patent introduces an intermediary mechanism in the form of unique identification information that enables multiple PDU sessions without requiring physical or structural modifications to the access network. This intermediary layer allows the existing access network infrastructure to support session differentiation through logical rather than physical changes.
Solution Approach 2:
The patent implements parameter changes by modifying the data packet structure to include unique identification information for PDU sessions. This parameter addition enables the network to distinguish and manage multiple sessions using existing infrastructure, avoiding expensive access network modifications while achieving the required adaptability.
3Reliability
If traditional identification methods are used, then simple processing is maintained, but security against spoofing is compromised
Solution Approach 1:
The patent applies preliminary action by pre-establishing unique identification information for each PDU session before communication begins. This advance configuration enables security verification without adding complex real-time processing, as the identification parameters are already in place to prevent spoofing attempts.
Data Source
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AI summary
A network device receives (510) a message from a device. The network device processes (520) the message to determine identification information associated with the device. The network device processes (530) the message to determine identification information associated with a packet data unit, PDU, session, of one or more PDU sessions, of the device. The network device transmits (540) based on the identification information associated with the device and the identification information associated with the PDU session of the device, the message to another network device.