AMF Module Correction via Slice-ID Routing in Wireless Roaming
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Solution Overview
Problem
Wireless communication systems face challenges in supporting varying requirements of multiple wireless service providers for roaming services due to different communication parameters and configurations, requiring expensive resources and additional software development for a unified Access and Mobility Management Function (AMF) module.
Innovation Solution
Implementing a dedicated AMF module for each wireless service provider based on a slice-id assigned to user equipment (UE), allowing communications to be routed to corresponding radio access networks, and leveraging a reroute feature to correct slice-id mismatches using a subscriber service profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a unified AMF module is configured to support multiple wireless service providers with different requirements, then roaming services can be provided to multiple providers, but processing resources, bandwidth, and software development costs increase significantly
Solution Approach 1:
The patent divides the unified AMF module into multiple dedicated AMF modules, each specifically configured for a particular wireless service provider. This segmentation allows each module to handle only its designated provider's requirements, eliminating the need for a single complex module to support all providers simultaneously. The network node selects the appropriate dedicated AMF module based on the UE's service provider identification, thereby reducing processing overhead and software development complexity for each individual module.
2Adaptability or versatility
If a unified AMF module supports varying communication parameters of different service providers, then multi-provider roaming is enabled, but the configuration complexity and resource requirements increase
Solution Approach 1:
Each dedicated AMF module is configured with specific communication parameters and settings optimized for its designated wireless service provider. This local quality approach ensures that each module has the precise configuration needed for its provider without carrying unnecessary configuration data for other providers. The network node routes UEs to the appropriate dedicated module based on provider identification, ensuring that processing resources and bandwidth are used efficiently by matching UE requirements with the correctly configured module.
3Productivity
If dedicated AMF modules are implemented for each service provider, then resource efficiency improves, but the number of AMF modules increases
Solution Approach 1:
The network node acts as an intermediary that receives registration requests from UEs, identifies the UE's home wireless service provider, and routes the UE to the appropriate dedicated AMF module. This intermediary function manages the complexity of having multiple dedicated modules by providing a centralized routing decision point. The network node maintains the mapping between service providers and their dedicated AMF modules, thereby managing the increased number of modules without proportionally increasing overall system complexity.
Data Source
AI summary
A method for correcting an access and mobility management function (AMF) module includes: receiving, from a user equipment (UE), a registration request message including a slice identifier, selecting, by a network node, an AMF module from a plurality of AMF modules each associated with one of a plurality of wireless communication service providers, the plurality of wireless communication service providers providing roaming services, determining, by the selected AMF module, whether the slice identifier matches a provisioned slice identifier associated with the UE, based on a determination that the slice identifier matches or does not match with the stored slice identifier, providing the roaming service by one of the plurality of wireless communication service providers associated with the selected AMF module or an AMF module associated with a corrected slice identifier.