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Onboard self-organized network efficient and reliable routing method based on message aggregation

A vehicle ad hoc network and message technology, applied in network topology, electrical components, wireless communication, etc., can solve problems such as difficult to reach, reduce control overhead, etc., to reduce control overhead, reduce average delay, and improve transmission success rate Effect

Active Publication Date: 2017-11-10
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method proposed by the present invention can reduce the number of Beacon messages transmitted in the network and reduce control overhead by aggregating multiple Beacon messages and aggregating Beacon messages and data packets; at the same time, when the node carrying the data packet deviates from the predetermined shortest path, it can re-find the path , solve the problem that the data packet is difficult to reach the destination due to the deviation of the node from the shortest path, improve the success rate of data packet transmission, and reduce the end-to-end average delay of the data packet

Method used

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  • Onboard self-organized network efficient and reliable routing method based on message aggregation
  • Onboard self-organized network efficient and reliable routing method based on message aggregation
  • Onboard self-organized network efficient and reliable routing method based on message aggregation

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Embodiment approach

[0088] A specific implementation is as follows:

[0089] (1) Implementation conditions

[0090] Up to hundreds of kilometers in a coverage area 2 In the VANET, there are one or more RSUs and multiple common nodes (usually referred to as "nodes") acted by vehicular wireless communication devices. The communication between RSUs uses a set of specialized systems and mechanisms (such as wired network and its routing mechanism), and the communication between nodes and between nodes and RSUs uses a wireless multi-hop network form. Each node can know its own location information (such as with the help of GPS system); each node has an electronic map tool (such as Baidu map), knows the specific location of each RSU, and can calculate the shortest distance to the RSU on the map path. Business data is transmitted between nodes. The number of RSUs ≥ 1, the number of nodes ≥ 2.

[0091] (2) Implementation method

[0092] The implementation method is divided into two parts: "control m...

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Abstract

The invention provides an onboard self-organized network efficient and reliable routing method based on message aggregation. The method is composed of two parts of content: control message generation, transmission and processing, and data packet transmission and processing, wherein the two parts are interlaced on the time sequence; the method comprises three new mechanisms as follows: Beacon message self-adaptive aggregation, data packet and Beacon message self-adaptive aggregation, and path re-finding when a node deviates from the shortest path; the first new mechanism is worked at the control message generation, transmission and processing part; the second new mechanism is simultaneously worked at two parts of the control message generation, transmission and processing, and the data packet transmission and processing; and the third new mechanism is worked at the data packet transmission and processing part. By using the method for self-adaptively aggregating multiple Beacon messages, self-adaptively aggregating the data packet and the Beacon message and re-finding the shortest path when the node carrying the data packet deviates from the preset shortest path, the control expenditure can be reduced, the data packet transmission success rate is improved, and the end-to-end average delay of the data packet is lowered.

Description

technical field [0001] The invention belongs to the technical field of vehicle ad hoc network (Vehicular Ad-hoc NETworks, VANETs) communication, and relates to the use of road-side units RSU (Road-Side Units), network nodes and RSU can use map information to calculate the shortest path to the destination node Vehicular ad hoc network occasions. Background technique [0002] Vehicle ad hoc network is an ad hoc network specially designed for communication between vehicles. It belongs to the subset of mobile ad hoc networks and the Internet of Things. to Vehicle, V2V), vehicles and roads (V2R, Vehicle to Road, V2R), vehicles and pedestrians, vehicles and the Internet between the omni-directional communication system, the overall structure please refer to the appendix figure 1 . The system architecture of VANET can be divided into three parts: the first part is the bottom layer of VANET, that is, the perception layer. The perception layer mainly refers to the perception termi...

Claims

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Application Information

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IPC IPC(8): H04W40/02H04W40/22H04W40/24H04W84/18
CPCH04W40/02H04W40/22H04W40/246H04W40/248H04W84/18
Inventor 任智张勇吕昱辉秦军田洁丽姚玉坤
Owner CHONGQING UNIV OF POSTS & TELECOMM
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