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Information transmission method, device and system in vehicular ad hoc network

An information transmission system and self-organizing network technology, applied in the direction of vehicle wireless communication services, vehicle components, transportation and packaging, etc., can solve the problems of waste of traffic resources and increase the incidence of network congestion, so as to reduce the incidence and reduce network congestion. The effect of congestion and waste reduction

Active Publication Date: 2018-02-16
BEIJING UNIV OF POSTS & TELECOMM
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  • Claims
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Problems solved by technology

[0005] In the existing method, since each node in the entire network needs to flood its surrounding nodes, a large amount of traffic is generated in the network, resulting in a waste of traffic resources and increasing the incidence of network congestion

Method used

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  • Information transmission method, device and system in vehicular ad hoc network
  • Information transmission method, device and system in vehicular ad hoc network
  • Information transmission method, device and system in vehicular ad hoc network

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] In addition to ordinary vehicle nodes, the vehicle ad hoc network also includes bus vehicle nodes, roadside unit nodes and traffic control center nodes. Among them, ordinary vehicle nodes move randomly, bus vehicle nodes move according to certain rules, roadside unit nodes and traffic control center nodes are fixed. An embodiment of the present invention provides a network architecture in a vehicle ad hoc network, and according to the type of node in th...

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Abstract

The embodiment of the invention provides an information transmission method, device and system in a vehicular ad hoc network. The method comprises the following steps: generating a content query request message for querying a requested content, wherein the content query request message comprises a target content identifier of the requested content; transmitting the content query request message toa pre-determined content requested node corresponding to a content request node, so as to enable the content request node to search a first node identifier, and return the searched first node identifier to the content request node; acquiring the first node identifier returned by the content requested node; and acquiring the requested content according to the first node identifier. The embodimentof the invention can obtain the node identifier of the node that carries the requested content without using the flooding process between nodes like the prior art, and can obtain the requested contentaccording to the node identifier, so that directional information transmission between the nodes is realized, the waste of traffic resources in the vehicular ad hoc network is reduced, and the incidence of network congestion is reduced.

Description

technical field [0001] The invention relates to the field of vehicle ad hoc networks, in particular to an information transmission method, device and system in the vehicle ad hoc network. Background technique [0002] The vehicle ad hoc network is a mobile self-organizing sensor network. The vehicle ad hoc network contains various node types of routing nodes (referred to as nodes), such as ordinary vehicle nodes, bus nodes (Bus nodes), roadside units (RoadSide Unit, RSU) node and Traffic Control Center (Traffic Control Center, TCC) node, etc. [0003] In the prior art, each node in the vehicle ad hoc network will flood other surrounding nodes every preset time interval, and pass its own location and the content identification of the content it carries to other nodes, so that other nodes Knowing the location of the node and the content ID of the content it carries enables each node in the entire network to obtain the location of other nodes and the content ID of the content ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/40H04W28/02H04W28/10
CPCH04W28/0289H04W28/10
Inventor 芮兰兰邱雪松郭辉张瑶王颖杨杨
Owner BEIJING UNIV OF POSTS & TELECOMM
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