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Adaptive reliable routing method for VANETs

An adaptive, Internet of Vehicles technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as frequent topological dynamic changes

Inactive Publication Date: 2017-05-24
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0011] The purpose of the present invention is to solve the problem of frequent changes caused by topology dynamics, and proposes an adaptive and reliable routing method for the Internet of Vehicles

Method used

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  • Adaptive reliable routing method for VANETs
  • Adaptive reliable routing method for VANETs

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Embodiment Construction

[0062] In the design method of the present invention, the entire preparation stage and the route establishment process are as follows: Figure 4 shown.

[0063] In the invention design method, by studying the motion characteristics of the vehicle, the factors that cause the unreliability of the link are studied, and it is proved that the maintenance time of the link obeys the logarithmic normal distribution. Then, on the basis of it, a calculation model of inter-node link reliability is established. The reliability value of the link between the evaluation nodes is used as a parameter in the Q-Learning algorithm, and the RSAR routing algorithm is proposed.

[0064] The specific implementation process of the present invention:

[0065] 1. Routing establishment process:

[0066] 1.1. The source node sends an R_req data packet to the entire network in the form of broadcast, and starts the path request timer. R_req records the node ID passed through during the routing process. W...

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Abstract

The invention provides an adaptive reliable routing method for the VANETs. In the design of the method, the maintenance times of links are proved to abide by logarithmic normal distribution by studying the movement characteristics of vehicles. Then, a reliability calculation model of links between nodes is established. The reliability values used for estimating the links between the nodes are used in a Q-Learning algorithm as a parameter, and a RSAR routing algorithm is proposed. Firstly, a source node sends a R_req data packet to the whole network in the form of broadcast, a path request timer is started, the R_req records IDs of all nodes passed, a R_rep data packet is generated by overturning in the R_req data packet, the R_rep data packet is sent to nodes recorded in an overturning path in the form of single-hop broadcast after waiting for a time slot, the next hop address of the data packet is modified, and a Q_Table of the node is updated. Experiments show that the method has the advantages of having a relatively high packet delivery rate and shortening the transmission delay.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of combining computer applications and the Internet of Things. [0003] 【Background technique】 [0004] With the continuous development of communication technology, as the expansion of traditional MANETs network, VANETs is the most important part in realizing intelligent city and building intelligent transportation system (ITS). In VANETs, ​​wireless communication can be divided into two types, one is vehicle-to-fixed infrastructure (V2I) communication, and the other is vehicle-to-vehicle (V2V) communication. Because V2V does not require infrastructure and has flexible deployment characteristics, it is favored by many researchers. As an important supporting technology to realize intelligent transportation system, efficient routing protocol design becomes an important step to realize the application of VANETs. Some reliable routing algorithms have been proposed, such as: SLBF and EG-RAODV. These alg...

Claims

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Application Information

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IPC IPC(8): H04L12/741H04L12/751H04L29/08H04L45/74H04L45/02
CPCH04L45/02H04L45/54H04L67/12
Inventor 张德干李文斌牛红莉
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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