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首页> 外文期刊>IEEE Transactions on Intelligent Transportation Systems >Event Notification in VANET With Capacitated Roadside Units
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Event Notification in VANET With Capacitated Roadside Units

机译：VANET中带有活动路边单元的事件通知

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摘要

Many future vehicular ad hoc network (VANET) applications will be event driven and will require events of different types to be delivered to moving vehicles within some specified time. In this paper, we propose a publish–subscribe based event notification framework that uses roadside units (RSUs) to deliver events to vehicles that subscribe to them within the validity periods of both the subscriptions and the events. Each RSU can disseminate only a finite number of events at a time and has a cost associated with it. Two scheduling problems to schedule the dissemination of events from RSUs are formulated. The first problem aims to maximize only the number of subscriptions that are matched to some events. The second problem, in addition to maximizing the number of subscriptions matched, also aims to minimize the total cost of disseminating the events. We have designed offline and online algorithms for the problems that a service provider can execute to schedule event disseminations from the RSUs. Detailed simulation results are presented to show that the algorithms are able to match a high percentage of subscriptions with low average event dissemination cost for some realistic city traffic scenarios.
机译：未来许多车载自组织网络（VANET）应用将是事件驱动的，并且要求在特定的时间内将不同类型的事件传递给行驶中的车辆。在本文中，我们提出了一种基于发布-订阅的事件通知框架，该框架使用路边单元（RSU）在订阅和事件的有效期内将事件传递给订阅了它们的车辆。每个RSU一次只能传播有限数量的事件，并且具有与此相关的成本。制定了两个调度问题来调度RSU的事件传播。第一个问题旨在仅最大化与某些事件匹配的订阅数量。第二个问题，除了最大化匹配的订阅数之外，还旨在最小化传播事件的总成本。我们设计了离线和在线算法，以解决服务提供商可以执行以安排RSU事件传播的问题。详细的仿真结果表明，对于某些现实的城市交通场景，该算法能够以较高的平均事件传播成本匹配较高比例的订阅。

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