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Fuzzy clustering algorithm-based information fusion method applicable to vehicle ad hoc network

A fuzzy clustering method and vehicle ad hoc network technology, applied in the field of computer networks, can solve the problems of high change rate of message arrival and reduce message fusion efficiency, so as to improve fusion efficiency, avoid structure maintenance overhead, and ensure accuracy

Inactive Publication Date: 2015-07-01
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large-scale nature of the vehicle network, in the case of high density, the rate of change of message arrival is very high, which will inevitably lead to a large amount of computing overhead and greatly reduce the efficiency of message fusion

Method used

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  • Fuzzy clustering algorithm-based information fusion method applicable to vehicle ad hoc network
  • Fuzzy clustering algorithm-based information fusion method applicable to vehicle ad hoc network
  • Fuzzy clustering algorithm-based information fusion method applicable to vehicle ad hoc network

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Embodiment 1

[0021] An information fusion method based on a fuzzy clustering algorithm suitable for vehicle ad hoc networks, comprising the following steps:

[0022] Step S101: storing the local message and the received message as input data in the atomic message buffer;

[0023] Step S102: judge whether the time timer T expires, if not, return to step S101;

[0024] Step S103: If the timer T expires, take out the existing readings from the atomic information buffer, and use the fuzzy clustering method to classify them into different message classes;

[0025] Step S104: Use the fusion function AF to fuse messages of the same type;

[0026] Step S105: The fused message will be stored in the fused message buffer to wait for dissemination.

[0027] In order to improve the efficiency of message fusion in the step S102, the proposed information fusion system architecture based on the fuzzy clustering algorithm is based on a periodic timing controller. The timing controller is used to drive t...

Embodiment 2

[0046] The present invention is applicable to the same composition of network nodes, which usually means that the nodes have the same communication capability, that is, they have the same maximum communication radius; the nodes have been assigned a unified IP address or MAC address and other identity identifiers by the whole network; vehicles use wireless networks to exchange status with each other Information, including speed values, braking frequency and acceleration values.

[0047] figure 1 It is a schematic diagram of an application scenario of an embodiment of the present invention. The schematic diagram represents a section of an east-west two-way lane intercepted from an urban road at a certain moment. Road congestion occurred in the eastbound lane, while traffic in the westbound lane was normal. Assume that vehicle 9 receives six atomic messages from neighboring vehicles 1, 2, 3, 4, 8, and 10, denoted as {x 1 (9) ,x 2 (9) ,x 3 (9) ,x 4 (9) ,x 5 (9) ,x 6 ...

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Abstract

The invention provides a fuzzy clustering algorithm-based information fusion method applicable to a vehicle ad hoc network and relates to the technical field of computer networks. The method comprises the following steps: selecting speed value, brake frequency and acceleration value as information attributes and classifying local message objects by the fuzzy clustering algorithm to form different message sets; and fusing the information objects with the same attributes into a message. The method has the advantages of improving the fusion efficiency, obviously reducing transmission flow and guaranteeing the accuracy of road state information.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to an information fusion method based on a fuzzy clustering algorithm suitable for a vehicle ad hoc network. Background technique [0002] Vehicle ad hoc networks can support various applications in intelligent transportation systems (ITS), such as ensuring road safety; improving driving efficiency; providing better vehicle services, and so on. However, with the rapid increase in the number of vehicles on urban roads, road emergency problems such as road congestion are becoming more and more obvious. Therefore, more and more researchers are involved in the research and exploration of road state detection methods. [0003] Typically, road congestion detection relies on inter-vehicle communication (IVC), where vehicles exchange status information with each other and collect traffic data. By analyzing these data, the traffic control center or the vehicle itself can detect t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62H04L29/08
Inventor 高德云张宏科张琳娟朱婉婷赵伟程
Owner BEIJING JIAOTONG UNIV
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