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首页> 外文期刊>International Journal of Innovative Computing Information and Control >ON DEMAND DATA DISSEMINATION FOR DIFFERENTIATED LEVELS OF PRIORITIES IN VANETS
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ON DEMAND DATA DISSEMINATION FOR DIFFERENTIATED LEVELS OF PRIORITIES IN VANETS

机译：优先级不同的需求数据传播

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摘要

The primary goal of deployment of vehicular networks is to increase road safety. For its commercial viability it does also support other comfort applications. However, the main objective of these networks still remains to reduce the number of accidents and saving of human lives. In this paper we propose a new data dissemination scheduling strategy for on demand broadcasting of information from a road side unit to support the differentiated levels of services in vehicular ad hoc networks. The major novelty of our work lies in dividing set of vehicles into different categories based on their active participation towards road safety and introducing the concept of new selection criteria, termed as importance factor for effectively scheduling items from a road side unit. The importance factor combines the vehicle's priority, deadline of the request, size of item requested, and number of outstanding requests for that particular item. The item having maximum importance factor is scheduled first by road side unit. Mathematical modeling and simulation results point out that the mean waiting time for the highest priority vehicles can be kept very low, while simultaneously achieving good service ratio.
机译：部署车辆网络的主要目标是提高道路安全性。出于商业可行性，它还支持其他舒适性应用。但是，这些网络的主要目标仍然是减少事故数量和挽救生命。在本文中，我们提出了一种新的数据分发调度策略，用于从路边单元按需广播信息，以支持车载自组织网络中服务的差异化水平。我们工作的主要新颖之处在于，根据车辆对道路安全的积极参与，将车辆划分为不同的类别，并引入新的选择标准的概念，这些标准被认为是有效调度路边单元项目的重要因素。重要性因子综合了车辆的优先级，请求的截止日期，请求的项目的大小以及对该特定项目的未完成请求的数量。具有最大重要性因子的项目首先由路侧单元调度。数学建模和仿真结果表明，可以将优先级最高的车辆的平均等待时间保持在非常低的水平，同时达到良好的服务率。

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