Sidelink Positioning UE Authentication Through Network Registration
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Solution Overview
Problem
In sidelink positioning scenarios, there is a need to determine the trustworthiness of user equipment (UE) participating in positioning, as existing systems cannot guarantee the authenticity of UE involved in sidelink positioning.
Innovation Solution
A terminal authentication method is implemented, where a first terminal requests registration as an anchor UE or location server UE by sending a request message to a network device, and the network device authenticates the terminal's authority based on the request message, using mechanisms such as asymmetric key authentication and subscription information verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal authentication is implemented in sidelink positioning, then trustworthiness of UE is improved, but device complexity increases
Solution Approach 1:
The patent introduces a network-side device as an intermediary to perform authentication. The network-side device verifies whether a terminal has authority to participate in sidelink positioning by checking subscription information, and issues authentication information to authorized terminals. This mediator approach shifts the complex authentication logic from the terminal itself to the network side, thereby improving reliability while controlling device complexity.
2Reliability
If authentication information is sent from network device to terminal, then trustworthiness is improved, but loss of information increases
Solution Approach 1:
The patent extracts only the necessary authentication information from the network device and transmits it to the terminal. The network-side device sends authentication information that contains only the essential credentials needed for verification, separating the authentication function from unnecessary data transmission. This extraction approach ensures reliable authentication while minimizing information loss and transmission overhead.
Data Source
AI summary
A terminal authentication method includes sending, by a first terminal, a first request message to a target network device, where the first request message is used for requesting the target network device to register the first terminal as a first-type terminal, the first-type terminal includes an anchor UE or a location server UE, the anchor UE is a terminal whose location is known and which participates in sending or measuring a sidelink positioning reference signal, and the location server UE is a terminal which provides a sidelink positioning service function.