5G AMF Authorization Signaling for Ranging/Sidelink Positioning
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Solution Overview
Problem
There is a lack of effective solutions for service authorization to a next generation radio access network (NG-RAN) for Ranging/Sidelink Positioning in a 5G network system, particularly in scenarios where UEs communicate directly via PC5 interfaces.
Innovation Solution
A method involving the Access and Mobility Management Function (AMF) in the 5G core network entity that receives PC5 capability information from a UE for Ranging/Sidelink positioning, obtains service authorization from the Unified Data Management (UDM), and sends an indication to the NG-RAN authorizing the UE to use these services, allowing the NG-RAN to allocate and schedule transmission resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If service authorization information is provisioned to NG-RAN for Ranging/Sidelink positioning services, then the NG-RAN can allocate and schedule transmission resources efficiently, but the network complexity and authorization management overhead increase
Solution Approach 1:
The authorization management is segmented into distinct functional components: UE capability indication, network authorization decision, and NG-RAN resource allocation. This segmentation allows each component to operate independently, reducing overall system complexity while maintaining efficient resource allocation.
Solution Approach 2:
The UE capability indication and service authorization are performed in advance before actual Ranging/Sidelink positioning operations. This preliminary action ensures that NG-RAN has the necessary authorization information ready, enabling efficient resource allocation without real-time complexity.
2Reliability
If the AMF obtains service authorization information from UDM for each UE, then accurate authorization control is achieved, but the signaling overhead and processing time increase
Solution Approach 1:
The service authorization information for Ranging/Sidelink positioning is merged with the existing UE context and capability information already stored in the AMF and UDM. This merging eliminates the need for separate authorization retrieval operations, reducing signaling overhead and processing time while maintaining accurate authorization control.
3Manufacturing precision
If the NG-RAN is provided with detailed UE capability information for PC5 interface, then resource allocation precision is improved, but the information management complexity increases
Solution Approach 1:
Only the essential UE capability information related to Ranging/Sidelink positioning is extracted and provided to the NG-RAN, rather than complete UE capability sets. This extraction maintains resource allocation precision for positioning services while reducing information management complexity in the network.
Data Source
AI summary
The invention is related to a method and a 5G core network entity for Ranging/Sidelink positioning service authorization to next generation radio access network (NG-RAN). An access and mobility management function (AMF) of the core network receives information about PC5 capability of a user equipment (UE) for Ranging/Sidelink positioning of a user equipment, obtains information related to service authorization for Ranging/Sidelink positioning from a UDM, sends an indication information indicating that the UE is authorized to use Ranging/Sidelink positioning service to the NG-RAN.