5G PDU Session Management for Encrypted Multi-Group QoS Traffic
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Solution Overview
Problem
In a 5G network, supporting multiple group communications with different Quality of Service (QoS) requirements in a smart energy infrastructure is challenging due to encrypted application traffic, making it impossible for User Equipment (UE) to identify and classify application traffic content.
Innovation Solution
The method involves a UE receiving traffic from application clients, setting up PDU sessions based on predetermined address values, and using an Application Function (AF) to establish and manage these sessions, allowing for the transmission of traffic with varying QoS requirements across different groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If application traffic is encrypted for security purposes, then security is improved, but the ability to identify and classify application traffic content is lost
Solution Approach 1:
The network side performs QoS parameter configuration and group identification before traffic encryption occurs. The AF sends QoS parameters and the network configures group identifiers based on these parameters in advance, allowing the UE to properly classify and handle encrypted traffic without needing to decrypt it for identification purposes
Solution Approach 2:
The patent introduces an intermediary mechanism where the network side (SMF, PCF) acts as a mediator between the AF and the UE. This intermediary receives QoS parameters from the AF, translates them into group identifiers, and configures the UE accordingly, allowing the UE to handle encrypted traffic based on network-provided identification rules rather than requiring direct traffic content analysis
2Adaptability or versatility
If multiple group communications with different QoS requirements are supported, then communication versatility is improved, but device complexity increases
Solution Approach 1:
The patent segments group communications by introducing group identifiers that associate different groups with different QoS parameters. The UE maintains separate group contexts with their respective QoS configurations, allowing multiple simultaneous group communications with different QoS requirements while managing complexity through structured segmentation rather than monolithic handling
Solution Approach 2:
The UE is designed with universal group management capabilities that can handle multiple group communications through a unified framework. The group identification and QoS parameter association mechanism provides a multi-functional approach where the same UE infrastructure supports diverse communication groups by dynamically configuring group-specific parameters rather than requiring separate dedicated paths for each group type
Data Source
AI summary
The present disclosure relates to: a communication technique merging IoT technology with a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present disclosure provides a method by which a terminal supports communication of a plurality of groups having different QoSs in a wireless communication system. The method may comprise the steps of: receiving, from at least one application client having a predetermined address value, traffic directed toward an application server; setting a first group associated with the predetermined address value; establishing a PDU session for one from among the first group associated with the predetermined address value and a second group associated with the application server set by means of an AF; and transmitting the traffic to the application server through the generated PDU session.