Node Selection for Sidelink Positioning in Variable Coverage
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Solution Overview
Problem
Current positioning technologies face challenges in selecting an appropriate node for performing positioning by sending and measuring a positioning reference signal based on a sidelink between terminals, particularly in scenarios where network coverage and node capabilities are variable.
Innovation Solution
A node selection method where a first node selects a second node for positioning, based on criteria such as positioning capabilities, network coverage, and connection requirements, using information exchanged through messages like Direct Communication Request and PC5 unicast link requests, to establish optimal sidelink connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If node selection is performed without considering network coverage and node capabilities, then the selection process is simple, but positioning accuracy and reliability deteriorate
Solution Approach 1:
The patent applies preliminary action by having nodes advertise their capabilities and network coverage information in advance through capability advertisement messages. This allows the selecting node to pre-evaluate potential partners before actual positioning begins, enabling reliable node selection without complex real-time analysis during positioning operations.
Solution Approach 2:
The patent implements feedback mechanisms where nodes respond to capability advertisement messages with capability indication messages, and where positioning results are fed back to improve future node selections. This iterative feedback process ensures that nodes with appropriate capabilities and coverage are consistently selected, improving reliability while managing complexity through structured information exchange.
2Measurement precision
If comprehensive node selection criteria are applied, then positioning accuracy is improved, but the time required for node selection increases
Solution Approach 1:
The patent uses preliminary action by exchanging capability advertisement and indication messages before actual positioning occurs. Nodes pre-advertise their capabilities and coverage information, allowing the selecting node to make informed decisions about positioning partners in advance, thereby achieving accurate positioning without time-consuming analysis during critical positioning operations.
Solution Approach 2:
The patent applies dynamics by enabling nodes to dynamically adjust their advertised capabilities and coverage information based on current network conditions and positioning requirements. This allows the system to adapt node selection criteria in real-time, balancing accuracy requirements with time constraints through flexible, condition-based selection mechanisms.
Data Source
AI summary
A node selection method, a terminal, and non-transitory readable storage medium are provided. The node selection method includes: a first node selecting a second node. The second node is used for performing positioning together with the first node. The first node is at least one of the following: a terminal, a base station, or a core network function. The second node is at least one of the following: a terminal, a base station, or a core network function. The second node comprises at least one of the following: a node that does not need to establish a connection to the first node, or a node that needs to establish a connection to the first node.