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A communication method for Internet of Vehicles based on cognitive radio

A technology of cognitive radio and communication method, applied in the field of car networking communication based on cognitive radio, can solve problems such as expiration

Active Publication Date: 2019-05-14
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high-speed mobility of CR-VANET, when the vehicle moves to the next road segment, the current channel state of each vehicle will expire with a certain probability

Method used

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  • A communication method for Internet of Vehicles based on cognitive radio
  • A communication method for Internet of Vehicles based on cognitive radio
  • A communication method for Internet of Vehicles based on cognitive radio

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Embodiment Construction

[0061] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0062] A communication method for the Internet of Vehicles based on cognitive radio, such as figure 1 shown, including steps:

[0063] 1) Establish a Dirichlet model to describe the correlation between the perception data from different vehicles at each moment;

[0064] Such as figure 2 As shown, at each moment, there is a certain correlation between the spectrum sensing data from different vehicles, and several adjacent vehicles can share a common spectrum state, and the correlation of spectrum sensing data from different vehicles is called spatial correlation properties, using t...

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Abstract

The invention relates to a vehicle networking communication method based on cognitive radio. The method comprises steps of 1, establishing a Dirichlet model used for describing correlation between perception data of different vehicles at the same moment; 2, establishing a hidden Markov model according to the Dirichlet model, so as to describe the relation between an observed value and a hidden channel state; 3, according to the hidden Markov model and according to that a next channel state is more like a former channel state, determining the channel state transition probability; and 4, according to the obtained channel state transition probability, obtaining the availability of the channel of a next road segment. Compared with the prior art, the invention adopts the machine learning algorithm in CR-VANET, fully utilizes a historical spectrum perception database, and utilizes the Dirichlet process and a non-parametric hidden Markov model, thereby utilizing the relation between spectrum data and the hidden channel state for improving the communication efficiency.

Description

technical field [0001] The present invention relates to a communication technology of the Internet of Vehicles, in particular to a communication method of the Internet of Vehicles based on cognitive radio. Background technique [0002] In recent years, the concept of cooperative communication between vehicles (for example: Internet of Vehicles) has been proposed to support driving safety and make driving safer and more comfortable. The Internet of Vehicles is a special ad hoc network of vehicles equipped with wireless communication equipment. Vehicles can transmit information among each other (ie, vehicle-to-vehicle), infrastructure (ie, vehicle-to-infrastructure), and roadside units, and traffic information can also be shared among them. According to the report of the US National Public Transportation Safety Administration, all vehicles will be required to be equipped with such wireless communication devices in order to reduce the occurrence of future traffic accidents. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00H04W84/18H04B17/391
CPCH04B2201/692H04L27/0006H04W84/18
Inventor 黄新林吴俊董航张昕吴祥徐源郇小宁翟瑜博
Owner TONGJI UNIV
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