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Vehicle network routing method

A vehicle network and routing technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as reduced routing performance and data transmission failures, and achieve the effect of improving efficiency and accuracy.

Inactive Publication Date: 2014-02-12
SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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Problems solved by technology

The geographic location routing method is often used in vehicle networks for data routing, but vehicle nodes often move at high speed on the road, and the position error caused by this high-speed movement will significantly reduce the performance of routing. For example, when a data packet wants to be forwarded by a vehicle node , the vehicle node may move away from its original position, resulting in data transmission failure

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Embodiment Construction

[0027] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further explained in conjunction with specific drawings.

[0028] An embodiment of the present invention combines the attached figure 1 The details are as follows:

[0029] Reference figure 1 , Equipped with vehicle-mounted terminals, vehicles with GPS receivers and digital maps constitute vehicle nodes, the steps are as follows:

[0030] 1. The vehicle node periodically broadcasts its own latitude, longitude, time and ID number data packets obtained from the GPS receiver;

[0031] 2, figure 1 Among them, the three vehicle nodes of A, B, and C are all neighbor nodes of the source node; the source node stores the position information in the latest two data packets of the three nodes of A, B, and C; the same is true for other nodes, each vehicle The nodes store the location information in the latest two data packets of neighbor...

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Abstract

The invention discloses a vehicle network routing method. The vehicle network routing method includes the following steps: 1) vehicle nodes periodically broadcast location information obtained from a GPS (Global Positioning System) receiver, and each vehicle node stores location information in the latest two data packages of the neighboring nodes; 2) each vehicle node serves as a source node after receiving a broadcast data package, and the current locations of the neighboring nodes on a map are predicted according to the location information that is sent through the latest two periodic broadcasts and stored by the source node; 3) the node nearest to a destination node is selected from the neighboring nodes to serve as a forwarding node of the data package, and the data package is forwarded from the source node to the forwarding node; 4) the forwarding node continues to forward the data package and gradually approaches the destination node until the destination node is one of the neighboring nodes. Through exponential smoothing prediction, routing can be achieved according to the predicted location information, so that the routing accuracy and efficiency are improved. The vehicle network routing method has the characteristic of simplicity as well as rapidness of calculation.

Description

Technical field [0001] The invention relates to a vehicle network routing method, in particular to a vehicle network routing method adopting an exponential smooth prediction method, and belongs to the field of automatic control and information technology. Background technique [0002] Due to the wide application of global positioning system and other positioning technologies, geographic location routing methods are increasingly used in mobile ad hoc networks, which are characterized by using the geographic location of mobile nodes as their addresses to transmit data packets to the destination node , The node only needs to know the location of the neighboring point, and does not need a clear route establishment and route maintenance process. Both simulation and practical application show that this routing protocol has good scalability and robustness. [0003] The vehicle network is a specific mobile self-organizing network, which refers to the mobile self-organizing network formed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L29/08
Inventor 陈林
Owner SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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