A Multicast Routing Method for Urban Vehicle Network Messages Based on Node Movement Trend
A technology of node movement and vehicle network, applied in the field of network communication, can solve the problem of waste of communication resources, achieve the effect of accurate and fast delivery, reduce maintenance costs, and save resources
Active Publication Date: 2017-07-18
慧科教育科技集团有限公司
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Problems solved by technology
[0007] The technology of the present invention solves the problem: Aiming at the deficiency of the multicast routing protocol in the existing vehicle network, a message multicast routing method based on the node movement trend is proposed, and the "storage-carry-forward" mechanism is adopted by introducing DTNs communication technology Ensure normal communication between vehicles in the vehicle network under frequent interruptions; use the movement trend of vehicle nodes to dynamically determine whether they are in the target area of the message, and then organize routing activities in a targeted manner, avoiding a huge waste of communication resources
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[0058] The urban vehicle network is composed of urban road traffic participating equipment and serves as a network form for urban road traffic based on urban roads. These participating devices include: vehicles equipped with communication terminals, pedestrians, fixed roadside infrastructure, etc., but each device has the function of message generation and routing.
[0059] 1. The following describes the basic implementation of the present invention.
[0060] 1. First, the network environment needs to be modeled. The content of the modeling includes: roads, vehicle nodes, messages, target areas of messages, forwarding areas of messages, etc. details as follows:
[0061] (1) Modeling of urban roads and related content
[0062] The concept of defining position and position set in the present invention is as follows:
[0063]
[0064] Among them, location indicates the location, LOCATION indicates the location set, longitude indicates the longitude of the location, and lat...
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Provided is an urban vehicle network message multicast routing method based on a node movement trend. A target area dividing method based on the movement trend is provided according to a model built for urban road traffic and a communication network, and according to the movement state of nodes, the nodes are grouped dynamically in real time, and routing activities are arranged. Due to the fact that the actual road condition is considered, a multicast routing algorithm is more suitable for diffusion of organization messages in an urban vehicle network, the extra cost of the network can be greatly lowered on the premise of not obviously reducing the delivery success rate, and most of (80 percent) of the messages can be delivered to the position of a target node within a short time (about 300 seconds).
Description
technical field [0001] The invention relates to the field of network communication, in particular to the problem of message forwarding and diffusion in vehicle networks, specifically a message multicast routing method, which is suitable for information dissemination of urban vehicle networks. Background technique [0002] Vehicle Networks (Vehicular Networks) refers to the electronic components loaded on the vehicle through radio frequency and other identification technologies to realize the extraction and effective use of attribute information and static and dynamic information of all vehicles on the information network platform, and according to different Functional requirements A type of network that effectively supervises the operating status of all vehicles and provides comprehensive services. As an important application of Internet of Things technology in Intelligent Transportation System (ITS), vehicle network technology has high technical and economic feasibility and...
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IPC IPC(8): H04W40/20
Inventor 王海泉朱涛杨文静李泽西
Owner 慧科教育科技集团有限公司