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

A fuzzy clustering method and a vehicle ad hoc network technology, applied in the field of computer networks, can solve the problems of high message arrival change rate, reduce message fusion efficiency, etc., and achieve the effects of improving fusion efficiency, avoiding structure maintenance overhead, and reducing transmission traffic.

Inactive Publication Date: 2013-02-06
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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Experimental program
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Embodiment 1

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

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

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

[0024] Step S103: If the timer T expires, take 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 merged message will be stored in the merged message buffer for propagation.

[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. Use the timing controller to drive the work of the message fusion m...

Embodiment 2

[0046] The present invention is suitable for the same composition of network nodes, which usually means that the nodes have the same communication capabilities, that is, have the same maximum communication radius; the nodes have been assigned a uniform IP address or MAC address and other identity identifiers by the entire network; vehicles use wireless networks to exchange states Information, including speed value, braking frequency and acceleration value.

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

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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] The vehicle self-organizing network can support a variety of 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 congestion and other road emergencies have become more prominent. Therefore, more and more researchers are involved in the research and exploration of road state detection methods. [0003] Generally, 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 discover th...

Claims

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Application Information

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IPC IPC(8): G06F19/00H04L29/08
Inventor 高德云张宏科张琳娟朱婉婷赵伟程
Owner BEIJING JIAOTONG UNIV
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