Vehicle Node Positioning Using Shared Multi-Node Ranging
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Solution Overview
Problem
Current vehicle positioning systems face challenges in quickly and accurately determining the location of external nodes for functions like insensible unlocking and automatic parking, as multiple positioning nodes need to establish individual connections, leading to prolonged ranging times and reduced accuracy.
Innovation Solution
A method where a primary node establishes a connection to a to-be-positioned node and communicates with secondary nodes, allowing them to reuse this connection for ranging, using parameters like frequency, hopping sequences, and keys to enhance communication efficiency and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple positioning nodes establish individual connections to the to-be-positioned node, then each node can independently perform ranging, but the positioning time is prolonged and connection management becomes complex
Solution Approach 1:
The patent merges the connection establishment process by having only the primary node establish a connection to the to-be-positioned node, while secondary nodes reuse this existing connection for ranging operations. This eliminates redundant connection establishment and reduces overall positioning time while maintaining the ability of multiple nodes to perform accurate ranging simultaneously
Solution Approach 2:
The connection established by the primary node serves multiple functions: it enables the primary node to perform ranging, allows secondary nodes to reuse the connection for their own ranging operations, and provides a shared communication pathway. This multi-functional connection approach reduces the total number of connections needed and accelerates positioning
2Measurement precision
If multiple positioning nodes establish individual connections to the to-be-positioned node, then each node can independently perform ranging, but the system complexity increases
Solution Approach 1:
The patent merges connection management responsibilities by centralizing connection establishment in the primary node only. Secondary nodes do not independently manage connections but instead reuse the primary node's established connection, significantly simplifying the overall system architecture and reducing the complexity of connection management while maintaining multi-node ranging capability
Solution Approach 2:
The primary node acts as an intermediary that establishes and manages the connection to the to-be-positioned node on behalf of both itself and the secondary nodes. This intermediary role eliminates the need for each secondary node to independently manage connections, reducing system complexity while preserving the ability of multiple nodes to perform ranging operations
3Productivity
If secondary nodes reuse the connection established by the primary node, then positioning time is reduced, but the connection must support multiple nodes simultaneously
Solution Approach 1:
The patent implements periodic action by having the primary node send periodic notifications to secondary nodes about the connection state and ranging opportunities. This allows the shared connection to be accessed by multiple nodes in a coordinated, periodic manner, ensuring both fast positioning and stable connection management through time-division multiplexing of ranging operations
Data Source
AI summary
A method and a related apparatus for positioning a to-be-positioned node by a vehicle through a plurality of positioning nodes are disclosed. The positioning nodes may be divided into a primary node and a secondary node. The primary node in the vehicle may establish a connection to the to-be-positioned node, and the secondary node may communicate with and perform ranging with the to-be-positioned node through the connection established by the primary node. Further, the vehicle may determine a location of the to-be-positioned node based on a ranging result of the secondary node. Finally, the vehicle may provide one or more functions for a user based on the location of the to-be-positioned node. According to the technical solutions provided in this application, the vehicle can obtain the location of the to-be-positioned node more quickly and accurately, to provide a corresponding function for the user, and reduce waiting time of the user.