XRM PCF Selection Through AMF for Consistent Multi-Terminal QoS
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Solution Overview
Problem
The 5G system lacks a mechanism to manage and coordinate access and mobility association requirements for extended reality media (XRM) services, ensuring consistent quality of service (QoS) and transmission strategy coordination among multiple devices, particularly in scenarios involving multimodal data streams.
Innovation Solution
A method for selecting a policy control function (PCF) based on extended reality media (XRM) service indication information or group identifier, ensuring that the same PCF is used for terminals supporting the same XRM service capability or group, thereby maintaining consistency in access and mobility management policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the 5G system manages multiple devices with multimodal data streams, then service capability and adaptability are improved, but coordination complexity and policy management difficulty increase
Solution Approach 1:
The patent segments the policy management function by introducing a dedicated PCF selection mechanism that separates XRM service policy management from general policy management. The AMF is divided into modules that specifically handle XRM service indication information and group identifier processing, isolating the complexity of multimodal data stream coordination into a dedicated functional segment.
Solution Approach 2:
The patent introduces an intermediary PCF selection mechanism that mediates between multiple devices participating in XRM services. The AMF acts as an intermediary that receives service indication information, selects appropriate PCFs, and coordinates policies among multiple terminals, simplifying the complex interactions through a centralized mediation point.
2Adaptability or versatility
If different PCFs are selected for different terminals, then service flexibility is improved, but QoS consistency and policy coordination deteriorate
Solution Approach 1:
The patent implements a feedback mechanism where the AMF receives service indication information from terminals, uses this feedback to select appropriate PCFs, and then applies consistent policies. The system continuously monitors service requirements and adjusts PCF selection accordingly, ensuring QoS consistency while maintaining service flexibility through dynamic feedback-driven policy coordination.
Solution Approach 2:
The patent creates a universal PCF selection mechanism that handles multiple functions: selecting PCFs for individual terminals, coordinating policies for groups of terminals, and managing XRM service-specific requirements. This multi-functional approach ensures that the same selection criteria and policy coordination mechanisms apply universally across different service scenarios, maintaining consistency while supporting flexibility.
3Measurement precision
If XRM service indication information is processed for each terminal, then service precision is improved, but signaling overhead and processing time increase
Solution Approach 1:
The patent applies preliminary action by having terminals pre-indicate their XRM service requirements through service indication information before actual service execution. The AMF uses this advance information to pre-select appropriate PCFs and prepare policy coordination, reducing the time required during actual service delivery while maintaining precise service parameter management.
Data Source
AI summary
A method for processing a service is applied to an access and mobility management function (AMF). The method includes: determining policy control function (PCF) selection reference information, the PCF selection reference information comprising at least one of extended reality media (XRM) service indication information or an XRM group identifier; and selecting a PCF on the basis of at least one of the XRM service indication information or the XRM group identifier.