UAV Terminal PC5 Authorization for UICC-Free A2X Links
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Solution Overview
Problem
The behaviors of Uncrewed Aerial Vehicles (UAVs) not including a Universal Integrated Circuit Card (UICC) in Aircraft-to-anything (A2X) communication are not clearly defined, particularly regarding radio parameters and authorization for PC5 communication.
Innovation Solution
A terminal apparatus for UAVs that includes a transmission and/or reception unit, which sends a direct link establishment reject message with specific identification information when not served by E-UTRA or NR, clarifying the communication path and authorization procedures for A2X communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UAVs without UICC are allowed to use A2X communication via PC5, then communication flexibility and adaptability improve, but authorization control and network management reliability deteriorate
Solution Approach 1:
The patent introduces a PC5 configuration message as an intermediary carrier to transmit authorization information from the network to UAVs without UICC. This message contains PC5 communication configuration parameters and authorization indicators, enabling the network to control and manage UAV communications remotely without requiring physical UICC cards.
2Measurement precision
If specific behaviors for radio parameters are defined for UAVs without UICC, then communication precision and measurement accuracy improve, but system complexity and configuration difficulty increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring radio parameter behaviors and A2X communication settings in the PC5 configuration message before UAV deployment. The network provides pre-defined radio parameter configurations that UAVs without UICC can directly apply, eliminating the need for complex on-site configuration procedures.
Data Source
AI summary
In a case that a terminal apparatus does not include a UICC and is not authorized to use A2X communication, the terminal apparatus transmits a direct link establishment reject message. In a case that a validity timer expires, the terminal apparatus stops the A2X communication via PC5.