V2X UE PC5 RAT Capability Indication in Registration

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Solution Overview

Problem

Existing vehicular communication systems face challenges in efficiently managing vehicle-to-everything (V2X) communications, particularly in registering and authorizing V2X capabilities over PC5 radio access technology (RAT) within cellular networks.

Innovation Solution

The implementation of user equipment (UE) for V2X communication, which includes processor circuitry to generate registration requests and radio front end circuitry to transmit these requests to an Access and Mobility Management Function (AMF) in the cellular network, ensuring proper authorization and policy provisioning for V2X services.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If V2X capability indication is added to registration requests, then V2X service authorization is improved, but signaling overhead increases

Engineering Contradiction:

ImproveV2X service authorizationVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent combines V2X capability indication with existing registration request messages (Initial Registration Request, Mobility Registration Update, Periodic Registration Update) rather than creating separate signaling messages. This merging approach enables V2X service authorization while minimizing additional signaling overhead by reusing established message structures.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If PC5 RAT capability indication is included in registration messages, then V2X service authorization is improved, but message complexity increases

Engineering Contradiction:

ImproveV2X service authorizationVSAvoidmessage complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a universal V2X capability indication mechanism that works across multiple registration message types (Initial Registration, Mobility Registration Update, Periodic Registration Update). This multi-functional approach simplifies the overall system by using a single indication method rather than separate mechanisms for different registration scenarios.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent modifies existing registration messages by adding V2X capability indication parameters to their information elements. This parameter-based approach maintains backward compatibility while enabling new V2X authorization functionality, avoiding the need to create entirely new complex message structures.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12238671B2V2X UE with different PC5 rat capability in 5GS

Publication Date: 2025.02.25 APPLE INC

AI summary

An approach is described for a user equipment (UE) to provide vehicle-to-everything (V2X) communication. The UE includes processor circuitry that generates a registration request message in a protocol for a cellular network, a V2X policy provisioning request and an indication of PC5 radio access technology (RAT) capability for V2X. The UE also includes a transmitter that transmits the registration request message, the V2X policy provisioning request and the indication of PC5 radio access technology (RAT) capability for V2X to an Access and Mobility Management Function (AMF) in the cellular network.