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Multi-replication routing method for selecting eruption range in vehicular vdhoc networks

A vehicle-mounted self-organizing, multi-copy technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve the problems that are not conducive to the rapid and effective delivery of messages, achieve high reliability and other performance, and improve the delivery rate. Effect

Active Publication Date: 2014-04-30
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Moreover, in the second stage, it has been passively waiting to adopt direct transmission or wait until the message reaches the lifetime, which is very unfavorable for the message to be delivered to the destination quickly and effectively

Method used

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  • Multi-replication routing method for selecting eruption range in vehicular vdhoc networks
  • Multi-replication routing method for selecting eruption range in vehicular vdhoc networks
  • Multi-replication routing method for selecting eruption range in vehicular vdhoc networks

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Embodiment Construction

[0030]The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] figure 1 It is a flowchart of the selective injection stage in the routing method of the present invention. As shown in the figure, in the present invention, the specific process of injection may include:

[0032] Step A1, the vehicle source node obtains L message copies.

[0033] Specifically, the value of L is usually determined according to the scale of the network, and the obtained value of L is generally much smaller than the number M of nodes in the network.

[0034] Step A2, obtaining the current location information, the target location information and the moving direction of the vehicle.

[0035] Specifically, all moving vehicles are equipped with a GPS system, so the information can be obtained more conveniently, and the vehicle keeps a neighbor list recording node information within a hop range.

[0036] Step A3, judgin...

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Abstract

The invention discloses a multi-replication routing method for selecting an eruption range in vehicular vdhoc networks, and belongs to the technical field of the vehicular vdhoc networks. The multi-replication routing method for selecting the eruption range in the vehicular vdhoc networks comprises the steps that a method for limiting the multi-replication eruption range is adopted, message replications of different numbers are erupted in different ranges in different directions according to movement of a vehicle, and directivity of message transmission can be better; three node performance indexes are added, and neighbor nodes with best performance are selected to serve as forwarding nodes according to the node performance indexes through a fuzzy logic learning system; a cache scheduling strategy used for having control over jamming is adopted. According to the multi-replication routing method for selecting the eruption range in the vehicular vdhoc networks, the problem that network overheads are overlarge due to blind flooding of the message replication number in multi-replication routing is solved, and the problems that due to the fact that direct transmission is passively adopted, the delivery rate is low, and delay is large are solved; compared with a traditional method, timeliness, reliability and other performance are better, and the multi-replication routing method is more applicable to the vehicular vdhoc networks with high-dynamic topology.

Description

technical field [0001] The invention belongs to the technical field of vehicle-mounted self-organizing networks, and relates to a multi-copy routing method for selecting eruption ranges in the vehicle-mounted self-organizing network. Background technique [0002] Vehicular Adhoc Networks (VANET) is an ad hoc network specially designed for vehicle communication. Due to the continuous high-speed movement of vehicles, the network transmission environment is generally harsh. VANET has attracted much attention in recent years. In VANTE, peer-to-peer communication is very necessary for many applications, including driver assistance systems, Internet access, and collection of road traffic information. Due to the mobility of vehicles, limited wireless resources and lossy wireless channels, it is very challenging to find an efficient path from source node to destination node through a series of intermediate nodes. The efficiency of routing is dependent on all nodes participating in...

Claims

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Application Information

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IPC IPC(8): H04L12/721H04L12/861H04L29/08
Inventor 唐伦韩洁陈前斌
Owner CHONGQING UNIV OF POSTS & TELECOMM
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