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Vehicular network RSU (Roadside Unit) deploy method and data forwarding method thereof

A vehicle-mounted network and forwarding method technology, which is applied in the field of vehicle-mounted network RSU deployment and data forwarding, can solve the problems of not being able to know the location of the RSU, poor network performance in the coverage area of ​​the backbone network, and high deployment costs, so as to avoid broadcast storms and avoid network traffic. Waste of resources, the effect of improving connectivity

Inactive Publication Date: 2012-07-11
BAINIAN JINHAI SCI & TECH +1
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of high deployment cost caused by waste of resources in the current vehicle-mounted network RSU deployment method and the fact that vehicle nodes without access to the RSU cannot know the location of the RSU and the coverage of the backbone network during the RSU data forwarding process caused by poor network performance

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  • Vehicular network RSU (Roadside Unit) deploy method and data forwarding method thereof
  • Vehicular network RSU (Roadside Unit) deploy method and data forwarding method thereof
  • Vehicular network RSU (Roadside Unit) deploy method and data forwarding method thereof

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Embodiment Construction

[0045] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0046] An embodiment of a vehicle network RSU deployment method of the present invention

[0047] This embodiment is based on pre-acquired real vehicle trajectories, calculates the deployment method of RSU under different hotspot thresholds, analyzes the enhancement effect on network connectivity and compares it with the existing technology. This rich simulation tool uses Java-based open source simulation tool ONE (Opportunistic Network Environment simulator) developed by Helsinki University of Technology. The specific parameter settings of the simulation are shown in Table 1.

[0048] Table 1 Simulation experiment parameter settings

[0049]

[0050] The vehicle trajectory data set used in the experiment is the driving trajectory of 536 taxis operating in San Francisco, USA within 23 days. Vehicles use GPS devices to obtain real-time l...

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Abstract

The invention relates to a vehicular network RSU (Roadside Unit) deploy method and a data forwarding method thereof. The vehicular network RSU deploy method comprises the following steps: adjacent RSUs are put in respective wireless transmission ranges and can forward data packets directly, and a plurality of RSUs are arranged along the road to form a 'backbone link' for providing connectivity for two positions with farther geographical distance; further, multiple 'backbone links' are utilized to connect all 'hotspot' areas to form a 'backbone network', and the RSUs add self identifiers and geographical positions in a beacon message to broadcast and send periodically; vehicle nodes receiving the information of the RSUs spread the information by using a probability flooding method; and when forwarding the data packets, the vehicle nodes check whether the information of the RSUs is received firstly, if not, the vehicle node with nearest distance to a destination node is selected as a next-hop relay for forwarding, and if so, whether the RSUs are utilized to assist forwarding of the data packets is determined according to the minimum distance principle. The vehicle network RSU deploy method and the data forwarding method thereof disclosed by the invention have the advantages that the connectivity of the whole network is remarkably improved, and the performance of remote data distribution is enhanced.

Description

technical field [0001] The invention relates to a vehicle-mounted network RSU deployment and a data forwarding method thereof, belonging to the technical field of vehicle-mounted network communication. Background technique [0002] Vehicle Ad-hoc Networks (VANET for short) is a self-organizing heterogeneous wireless multi-hop network composed of wireless nodes (referred to as nodes in this paper) and roadside units (Roadside Units, referred to as RSUs) installed on vehicles. The mode includes self-organizing multi-hop communication between nodes (V-2-V: Vehicle to Vehicle) and communication between nodes and RSU (V-2-I: Vehicle to Infrastructure). Compared with the traditional MANET (Mobile Ad-hoc Networks), the vehicular ad hoc network has obvious new features: large network scale, fast node movement speed, uneven spatial distribution of nodes, node movement trajectory restricted by roads, and nodes with strong computing power. capacity and adequate power supply etc. Typi...

Claims

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Application Information

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IPC IPC(8): H04W40/02H04W48/10H04W84/18
Inventor 杨卫东刘伎昭王珂卢志渊陈长宝李静冯琳琳李攀
Owner BAINIAN JINHAI SCI & TECH
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