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Vehicular Ad hoc network data transmission method based on position and topological characteristic

A data transmission method and vehicle ad hoc network technology are applied in the field of vehicle ad hoc network data transmission based on location and topology characteristics, and can solve the problem that data cannot be transmitted, the density and distribution of vehicles on the road are not considered, and the network topology characteristics are not considered. The impact of network performance and other issues can achieve the effect of good packet delivery rate and low data transmission delay.

Inactive Publication Date: 2013-01-16
HOHAI UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

The existing routing protocols based on location information mainly design data forwarding strategies based on location distance, without considering the density and distribution of vehicles on the road, without considering the impact of network topology characteristics on network performance, and without discussing the connectivity status of the network, so in practical applications There may be cases where the data cannot be transmitted

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  • Vehicular Ad hoc network data transmission method based on position and topological characteristic
  • Vehicular Ad hoc network data transmission method based on position and topological characteristic
  • Vehicular Ad hoc network data transmission method based on position and topological characteristic

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Embodiment Construction

[0023] In the following, the present invention will be further clarified with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, those skilled in the art will understand various aspects of the present invention. Modifications in equivalent forms fall within the scope defined by the appended claims of this application.

[0024] The present invention proposes a data transmission method based on location and network topology characteristics. It uses source routing technology to select the fork that must pass data forwarding according to the physical length of the road and the connectivity of the vehicle ad hoc network on the road; then, the source routing technology The selected fork road sequence is placed in the data packet header file; finally, the extended advanced greedy algorithm ...

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Abstract

The invention discloses a vehicular Ad hoc network data transmission method based on a position and a topological characteristic. The vehicular Ad hoc network data transmission method comprises the following steps of: marking different turnings in a vehicular Ad hoc network as J0, J1, ..., and JN, wherein a road for connecting the turning Ji and the turning Jj is represented by Rij; acquiring a physical length L_Rij of each road in the vehicular Ad hoc network and a vehicle density Den_Rij of each road; selecting a road for sending data; defining a weight value weightij of the road Rij, wherein the road Rij with the minimum weightij as the road for sending the data; and taking nodes, which are positioned at the turnings, in the road for sending the data as target nodes for sending the data, and transmitting the data to an adjacent node which is closest to the node of the next turning between the turnings. By the method, relatively high data packet delivery rate and relatively low data transmission time delay are achieved.

Description

Technical field [0001] The invention belongs to the technical field of vehicle ad hoc network, and particularly relates to a vehicle ad hoc network data transmission method based on location and topological characteristics. Background technique [0002] Vehicular Ad hoc Network (Vehicular Ad hoc Network, VANET) is a special type of mobile ad hoc network. It is an emerging application wireless network formed with the development of mobile ad hoc network technology and wireless communication technology. It is an intelligent transportation system. An important part of the vehicle environment, has a good application background for traffic information early warning, vehicle driving information assistance, vehicle-to-vehicle communication and vehicle Internet access in the vehicle environment. However, the rapid movement of nodes in the vehicle ad hoc network puts forward higher requirements for data transmission between vehicles. In order to improve the efficiency of data transmissio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/20H04L29/08G06F17/50
CPCY02T10/82
Inventor 张丽丽王慧斌郑莹陈浩徐淑芳
Owner HOHAI UNIV
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