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Method and device of alleviating VANET broadcast storm

A self-organizing network and broadcast storm technology, which is applied in the field of mitigating vehicle self-organizing network broadcast storms, can solve problems such as loss of safety messages, and achieve the effect of reducing flooding

Active Publication Date: 2016-06-15
FUZHOU HUAYING HEAVY IND MACHINERY
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the high packet loss rate caused by broadcast storms may cause other urgent safety messages to be lost

Method used

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  • Method and device of alleviating VANET broadcast storm
  • Method and device of alleviating VANET broadcast storm
  • Method and device of alleviating VANET broadcast storm

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Embodiment Construction

[0074] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0075] general idea

[0076] Network Model and Assumptions:

[0077] A one-dimensional line network that fits the topology of a vehicular ad hoc network on highways or well-designed roads in urban areas. Two network topologies: one-dimensional linear or single-lane network and multi-lane network. The distance D between neighbor nodes is distributed exponentially, and the average distance is A multi-lane network is modeled by multiple single-lane networks.

[0078] Broadcast storm mitigation techniques are as follows:

[0079] 1. Quantify the severity of the broadcast storm problem in the VAN. Based on message delay and packet loss rate, combined with traditional metrics, such as message reachability and overhead, we quantify the...

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Abstract

Provided are a method and device of alleviating VANET broadcast storm, wherein the method comprises the steps of: a first node receiving the data package from a last node, determining whether the data package is received for the first time, calculating a distribution time slot if receiving the data package for the first time, calculating a retransmission probability, rebroadcasting the data package according to the retransmission probability through the distribution time slot after receiving the data package, or abandoning the data package. In the technical scheme, the distribution time slot and a weighting forwarding probability are designed to reduce the information flooding influence in a VANET; the distribution time slot can reduce the data package flooding probability in time dimension, and the weighting forwarding probability can reduce the data package flooding probability in space dimension, thereby alleviating VANET broadcast storm in the case of dense traffic, avoiding important information loss, and solving the problems of broadcast storm and important information loss in the prior art.

Description

technical field [0001] The invention relates to the field of road vehicle communication, in particular to a method and device for alleviating vehicle ad hoc network broadcast storms. Background technique [0002] The vehicle ad hoc network (VANET) performs intelligent communication through dedicated short-range communication (DSRC) equipment in the 5.9GHz frequency band to obtain the ability of single-hop or multi-hop communication with nearby vehicles. The MAC layer protocol of the dedicated short-range communication protocol is a variant based on the IEEE802.11a wireless transmission standard. [0003] Vehicle ad hoc networks differ from ordinary mobile ad hoc networks in several ways. 1. The VAN is composed of mostly high-mobility nodes. Unlike random movement in any direction within a bounded area, in the VAN, the movement is set along the limited direction of the road, which is different but Vehicles traveling on adjacent roads can communicate with each other. 2. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04W4/06H04W84/18
CPCH04L67/12H04W4/06H04W84/18H04L67/63
Inventor 潘晨劲赵江宜
Owner FUZHOU HUAYING HEAVY IND MACHINERY
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