V2X Network Slice Policy Control for PC5 Access Authorization

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Solution Overview

Problem

The existing technologies are unclear on how to utilize network slices for Vehicle-to-Everything (V2X) communication via the PC5 interface, especially when the user equipment (UE) is not authorized by the network slice owner, and how to restrict UE access to network slice resources.

Innovation Solution

Implementing methods and systems for wireless communication that involve transmitting allowed network slice selection assistance information (NSSAI) and quality-of-service (QoS) parameters associated with V2X services, including aggregated maximum bit rates and validity areas, to ensure authorized access and resource management for V2X communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If network slice resources are made available for V2X communication via PC5 interface, then service capability and versatility are improved, but access control and security become more complex

Engineering Contradiction:

ImproveV2X service capabilityVSAvoidAccess control complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments network slice access control into multiple components: UE authorization status, PC5 interface permissions, and network slice-specific QoS parameters. Each aspect is controlled independently through specific signaling messages (N2 SM information, PC5 QoS parameters) to manage complexity while enabling versatile V2X services

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces the AMF (Access and Mobility Management Function) as an intermediary between the UE and network slice resources. The AMF mediates authorization by receiving UE identity, checking authorization status, and controlling access to PC5 interface resources based on network slice policies, thereby simplifying the overall access control mechanism

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If network slice resources are allocated for V2X services, then service quality and reliability are improved, but resource management complexity increases

Engineering Contradiction:

ImproveV2X service qualityVSAvoidResource management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent utilizes specific QoS parameters (aggregated maximum bit rate, 5QI values, packet delay budget, packet error rate) to define and control network slice resources for V2X services. By changing and managing these parameters through standardized signaling (N2 SM information, PC5 QoS parameter containers), the system ensures reliable service quality while keeping resource management tractable through parameter-based control

Inventive Principle:

Principle #35Parameter changes

3Speed

If PC5 interface communication is enabled for V2X, then communication efficiency and speed are improved, but authorization and access control become more difficult

Engineering Contradiction:

ImproveCommunication efficiencyVSAvoidAuthorization verification

Core Design Contradiction:

SpeedVSDifficulty of detecting and measuring

Solution Approach 1:

The patent implements preliminary authorization verification by checking UE authorization status against the allowed NSSAI before enabling PC5 interface communication. The AMF performs this check in advance using N2 SM information and PC5 QoS parameters, ensuring that only authorized UEs can access V2X resources through PC5 interface, thereby maintaining security without compromising communication efficiency

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12574834B2Network slice selection, management, and policy control for vehicle-to-everything (V2X) services

Publication Date: 2026.03.10 ZTE CORP

AI summary

A wireless communication method for use in an access and mobility management function is disclosed. The wireless communication method comprises transmitting, to a policy control function, PCF, allowed network slice selection assistance information, NSSAI, associated with a wireless terminal.