Method and system determining communication destination node position in automobile self-organized network

Abstract

The invention relates to a method for determining the position of a communication destination node in a vehicle ad-hoc network and a system thereof. The method comprises the following steps: a path is selected in the vehicle ad-hoc network and divided into path sections, a node is selected from each path section, and all the selected nodes form a position server candidate generation; the vehicle ad-hoc network is divided into a plurality of regions, and a position server corresponding to each region is selected from the position server candidate generation for the nodes; position renewal messages are sent from the nodes to all or part of the position servers; a position server for the destination node is selected at the communication source node, and a position inquiry message is sent to the position server; the position server receives the position inquiry message, if the recorded position information meets the requirement, a reply to the position information is made, or else, the position inquiry message is forwarded to other position servers. The invention can improve the reliability of position service, and reduce the maintenance expense and the position inquiry delay.

Description

technical field [0001] The invention belongs to the field of ad hoc networks and provides a method and a system for determining the position of a communication destination node in a vehicular ad hoc network. Background technique [0002] The vehicle ad hoc network is an ad hoc network composed of mutual communication between vehicles on the road, vehicles and roadside fixed nodes, such as maintenance stations and parking lots, in which vehicles and roadside fixed nodes are vehicle ad hoc networks. the nodes of the network. As an important part of intelligent transportation, VANET will assist traffic management, realize information sharing and expand the functions of vehicle equipment, thereby improving the safety and efficiency of road traffic. Through the exchange of information between vehicles, the vehicle ad hoc network technology can build a distributed traffic information release platform to provide drivers with traffic accidents, road congestion and other road condit...

AI Technical Summary

Problems solved by technology

The advantage of this method is that the vehicle location query delay is small, and the disadvantage is that it requires a large amount of infrastructure support, high deployment costs, poor adaptability to environmental changes, and is not suitable for use as a basic service for self-organized inter-node communication.

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