V2X PC5 Capability Authorization in 5G Systems
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Solution Overview
Problem
Current 5G wireless communication systems face challenges in efficiently facilitating Vehicle-to-Everything (V2X) communications, particularly in managing the authorization and configuration of Vehicle-to-Everything Radio Access Technologies (RAT) for user equipment (UE), which is crucial for direct communication between UEs over PC5 channels.
Innovation Solution
The proposed solution involves a method where a communication network processes registration requests from UE to determine authorization for V2X RAT configurations by retrieving authorization information from a Unified Data Management (UDM) repository and applying policy control functions, ensuring that only authorized UEs can communicate using specific V2X RAT capabilities like NR PC5 or LTE PC5, and transmitting necessary authorization parameters to the Radio Access Network (RAN) base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network implements comprehensive authorization checks for V2X RAT configurations, then security and reliability are improved, but processing complexity and time increase
Solution Approach 1:
The network performs authorization checks for V2X RAT configurations in advance, during the initial registration or capability indication phase, rather than checking each time a V2X communication is initiated. The AMF retrieves authorization information from UDM and determines whether the UE is authorized to communicate using the indicated V2X RAT configuration before the UE actually uses the PC5 interface, thereby preventing unauthorized access while streamlining subsequent communications.
2Measurement precision
If the network retrieves and verifies authorization information from UDM for each V2X RAT configuration, then authorization accuracy is improved, but processing time increases
Solution Approach 1:
The AMF retrieves authorization information from the UDM repository and performs verification during the initial registration procedure or when the UE first indicates V2X RAT configuration support, storing the authorization status for subsequent use. This preliminary authorization check ensures accurate verification while avoiding repeated real-time queries to UDM during actual V2X communications, thereby reducing processing time for time-critical V2X operations.
3Adaptability or versatility
If the network supports multiple V2X RAT configurations (NR PC5, LTE PC5), then versatility is improved, but system complexity increases
Solution Approach 1:
The AMF is designed to handle multiple V2X RAT configurations (NR PC5, LTE PC5, and combinations) through a unified authorization framework. The system retrieves authorization information that covers multiple RAT types and applies a single policy control function that can determine authorization for any indicated V2X RAT configuration, thereby supporting diverse V2X communication needs without requiring separate authorization mechanisms for each RAT type.
Data Source
AI summary
Some embodiments of this disclosure include apparatuses and methods for facilitating vehicle-to-everything (V2X) communications with user equipment (UE). In some embodiments, processing circuitry a communication network system may receive a registration request message from a UE indicating a V2X Radio Access Technology (RAT) configuration supported by the UE. The processing circuitry may retrieve authorization information from a Unified Data Management (UDM) repository and apply a policy control function (PCF) to the authorization information and the V2X RAT configuration specified by the UE to determine whether the UE has been authorized to communicate using the indicated V2X RAT configuration. In response to determining that the UE is authorized to communicate using the indicated V2X RAT configuration, the processing circuitry may transmit V2X service authorization parameters corresponding to the indicated V2X RAT configuration to a Radio Access Network (RAN) base station servicing the UE.