AMF PCF Parameter Replacement for 5G Service Continuity
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Solution Overview
Problem
In 5G mobile communication systems, parameters such as data network name (DNN) and single network slice selection assistance information (S-NSSAI) transmitted by user equipment (UE) to network functions (NF) may be invalid or not provided, leading to potential service failures or decreased customer service quality.
Innovation Solution
The proposed solution involves a method where the access and mobility management function (AMF) in a mobile communication system selects a policy control function (PCF) to replace invalid or unprovided DNN and S-NSSAI parameters, ensuring seamless service provision by using available parameters instead of rejecting UE requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network function rejects invalid or unprovided parameters from the UE, then the service failure is prevented, but the customer service quality decreases and service interruption occurs
Solution Approach 1:
The patent introduces a parameter replacement mechanism where the network function acts as an intermediary between the UE's parameter requests and the actual service configuration. When invalid or unprovided parameters are detected, the network function automatically replaces them with default or alternative valid parameters, thereby maintaining service continuity without strict rejection of UE requests.
Solution Approach 2:
The patent applies parameter changes by modifying the invalid or unprovided parameters into valid equivalents. The network function transforms problematic parameters (such as invalid DNN or S-NSSAI values) into acceptable parameter values, enabling the service to continue operating with corrected parameters rather than failing due to parameter invalidity.
2Reliability
If the network function replaces invalid parameters with available ones, then service failures are prevented and customer service quality is maintained, but the device complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring the network function with a set of valid parameter values and replacement rules before service establishment. When invalid parameters are detected, the network function can immediately apply pre-prepared replacements without complex real-time decision-making, thereby reducing the operational complexity while maintaining high service availability.
Solution Approach 2:
The network function performs self-service by automatically detecting and correcting invalid parameters without requiring external intervention or complex processing. The system has built-in capabilities to identify parameter issues and apply corrections autonomously, reducing the complexity burden on the overall system while ensuring continuous service availability.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for replacement of a DNN and/or S-NSSAI in a wireless communication system is provided.