UE Route Selection Policy Compliance Verification Through AMF
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Solution Overview
Problem
Current wireless communication systems lack a method to verify whether user equipment (UE) complies with user equipment route selection policy (URSP), as the UE-PCF and SMF entities are not connected, preventing effective identification of URSP compliance during PDU session creation.
Innovation Solution
A method involving a UE-policy control function (UE-PCF) entity that receives UE policy information, determines URSP compliance, and performs verification procedures through the access management function (AMF) to ensure adherence to URSP rules, using a UE route selection policy compliance capability indicator (UCCI) and URSP rule identifier (URID).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE-PCF and SMF entities are not connected, then the system architecture remains simple, but the ability to verify URSP compliance during PDU session creation is lost
Solution Approach 1:
The patent introduces an AMF (Access and Mobility Management Function) entity as an intermediary between the UE-PCF and SMF. The AMF receives URSP compliance capability indicators from the UE, forwards them to the UE-PCF, and relays URSP rules and compliance verification requests between the UE-PCF and SMF during PDU session creation, enabling compliance verification without direct UE-PCF to SMF connection
Solution Approach 2:
The patent divides the compliance verification function into separate modules: the UE-PCF handles policy generation and compliance determination, the AMF handles message forwarding and coordination, and the SMF handles session creation and execution. This segmentation allows each entity to perform its specific function while maintaining a distributed architecture
2Manufacturing precision
If URSP compliance verification procedures are implemented, then network control and service quality improve, but the complexity of policy management and message processing increases
Solution Approach 1:
The patent implements preliminary action by having the UE report its URSP compliance capability indicator before PDU session creation. The UE-PCF determines compliance requirements in advance and includes them in the URSP rules sent to the UE. This preliminary determination simplifies the actual session creation process by pre-establishing compliance criteria
Solution Approach 2:
The patent implements feedback mechanisms where the UE reports compliance capability indicators to the network, and the network responds with URSP rules that include compliance verification requirements. The UE then applies these rules and reports back on compliance status, creating a closed-loop feedback system that enables continuous verification while managing complexity through standardized message formats
Data Source
AI summary
A method performed by a user equipment-policy control function (UE-PCF) entity in a wireless communication system is provided. The method includes receiving, from a user equipment (UE) via an access management function (AMF) entity, UE policy information including UE route selection policy (URSP) compliance capability indicator (UCCI), determining whether to perform a URSP compliance verification procedure, based on the UE policy information, and performing the URSP compliance procedure based on the determining.