Sidelink Positioning Server Discovery Using QoS-Based Messages
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Solution Overview
Problem
The method for discovering and selecting an appropriate sidelink positioning server terminal device in out-of-coverage scenarios remains undefined in traditional ranging/sidelink positioning schemes.
Innovation Solution
The proposed solution involves transmitting and receiving discovery messages that include information related to positioning quality of service (QoS) or positioning methods to facilitate the selection of a suitable sidelink positioning server terminal device during the discovery procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional discovery procedure is used for anchor terminal device, then anchor terminal device can be discovered, but sidelink positioning server terminal device cannot be properly discovered or selected
Solution Approach 1:
The patent introduces positioning QoS information as an intermediary element in the discovery message. This intermediary carries critical selection criteria that enable the target terminal to identify suitable positioning servers, resolving the contradiction by adding a mediating information carrier without fundamentally changing the discovery procedure structure
Solution Approach 2:
The patent applies preliminary action by including positioning QoS information in advance within the discovery message. This allows the target terminal to evaluate and select positioning servers before actual positioning operations begin, ensuring reliable server discovery without adding operational complexity during execution
2Measurement precision
If discovery message includes positioning QoS information, then positioning server selection accuracy is improved, but message size increases
Solution Approach 1:
The patent extracts only the essential positioning QoS information needed for server selection into the discovery message, rather than including complete positioning capabilities or configuration details. This selective extraction achieves accurate server selection while minimizing message size increase
Solution Approach 2:
The patent applies local quality by including positioning QoS information specifically in the discovery message where it is most needed for server selection, rather than distributing all positioning information throughout the communication protocol. This localized information placement improves selection accuracy without unnecessarily increasing overall system message volume
Data Source
AI summary
A sidelink communication method includes: transmitting, by a first terminal, a first discovery message, where the first discovery message comprises first information, wherein the first information is associated with one or more of: positioning quality of service (QoS), or a positioning method.