Extended Reality Service Policy for Single PDU Session Routing
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Solution Overview
Problem
The 5G network system lacks a comprehensive mechanism to ensure that all data flows of an Extended Reality (XRM) service are transmitted using a single Packet Data Unit (PDU) session, leading to inefficiencies and resource waste.
Innovation Solution
Implementing an extended reality service policy by associating Application Function (AF) sessions with PDU sessions through Policy Control Function (PCF), Network Exposure Function (NEF), and UE policy containers, ensuring all XRM service data flows use the same PDU session, thereby optimizing transmission efficiency and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple PDU sessions are used for different data flows of XRM services, then service flexibility and adaptability are improved, but resource waste increases and transmission efficiency decreases
Solution Approach 1:
The patent merges multiple data flows of the same XRM service into a single PDU session by introducing a service identifier in the PCC rule that matches the service identifier in the AF session. This causes the SMF to select the same PDU session for all data flows belonging to the same service, thereby combining resource usage and eliminating waste while maintaining service flexibility through the matching mechanism.
2Adaptability or versatility
If multiple PDU sessions are used for different data flows of XRM services, then service adaptability is improved, but transmission efficiency deteriorates
Solution Approach 1:
The patent combines multiple data flows into a single PDU session by using service identifier matching between PCC rules and AF sessions. This merging approach improves transmission efficiency by reducing session management overhead and resource duplication, while service adaptability is maintained through the flexible matching mechanism that can accommodate different services.
3Device complexity
If AF session and PDU session are not associated, then network configuration simplicity is maintained, but service policy control precision deteriorates
Solution Approach 1:
The patent introduces an intermediary association mechanism between AF sessions and PDU sessions through service identifier matching in PCC rules. This intermediary layer enables precise service policy control by linking application-level service identification with network-level session management, without significantly increasing overall network configuration complexity.
Data Source
AI summary
Disclosed in embodiments of the present application are a method and device for implementing an extended reality service policy, which can be applied to a long-term evolution (LTE) system, a fifth generation (5G) mobile communication system, a 5G new radio (NR) system, or other future novel mobile communication systems and other communication systems. The method includes: obtaining a URSP rule table sent by a PCF, wherein the URSP rule table includes first indication information; and if the XRM service corresponding to the requested application is consistent with the XRM service corresponding to the indication information, sending an application request message to an AF by means of a PDU session corresponding to the XRM service.