UE Routing Policy Mapping via Traffic Category Mediator
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Solution Overview
Problem
In 5G systems, the inability to associate application traffic with a PDU session due to the failure of the operating system to transfer OS ID and OS App ID to the UE module, leading to incomplete application or application traffic association with the PDU session.
Innovation Solution
The method involves transmitting a registration request message with a traffic category support indication to the AMF, receiving UE configuration update messages including URSP rules and traffic category mapping information, and determining a PDU session for application traffic based on these rules and pre-stored mapping information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the operating system transfers OS ID and OS App ID to the UE module, then application identification accuracy is improved, but system complexity increases
Solution Approach 1:
The patent introduces traffic category mapping information as an intermediary layer between the operating system and the UE module. Instead of directly transferring OS ID and OS App ID, the system uses traffic categories (such as video, audio, messaging, browsing) as a simplified mediator that the UE module can process more easily while still enabling application traffic identification and association with PDU sessions.
2Reliability
If traffic category mapping information is introduced, then association completeness is improved, but information processing complexity increases
Solution Approach 1:
The patent segments the application identification process into two distinct parts: (1) the operating system generates traffic category mapping information that maps applications to traffic categories, and (2) the UE module uses this mapping information to identify and associate application traffic with appropriate PDU sessions. This segmentation allows each component to handle only its specialized task, improving overall association completeness while managing complexity through division of labor.
3Measurement precision
If application classification information is provided by the network, then routing accuracy is improved, but network signaling overhead increases
Solution Approach 1:
The patent implements preliminary action by having the operating system generate and store traffic category mapping information locally before network communication occurs. This pre-computed mapping information is then used by the UE module to accurately identify and route application traffic based on network-provided URSP rules, achieving high routing accuracy without requiring continuous network signaling for each routing decision.
Data Source
AI summary
The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates, and pertains to an operation method of a user equipment (UE). The operation method comprises the steps of transmitting a registration request message including a traffic category support indication to an access and mobility management function (AMF) via an access node, receiving, from the AMF via the access node, a UE configuration update message including UE route selection policy (URSP) rules determined on the basis of the traffic category support indication and first traffic category mapping information, and determining a protocol data unit (PDU) session for application traffic on the basis of the URSP rules and pre-stored second traffic category mapping information.