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A Vehicle-to-Infrastructure Data Offloading Scheme for Vehicular Networks with QoS Provisioning

机译：具有QoS配置的车辆到基础设施数据卸载方案

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摘要

In vehicular networks, vehicles carry various types of data that need to be offloaded to the RoadSide Units (RSUs) through Vehicle-to-Infrastructure (V2I) communications when vehicles come into their coverage. Since, RSUs are not widely deployed, vehicles have intermittent connectivity with RSUs. The data that vehicles carry to offload could be urgent data (such as accident data of nearby incident or emergency health data) that needs to be offloaded to the RSUs as soon as possible. Therefore, the consideration of Quality of Service (QoS) provisioning is imperative for data offloading in vehicular networks. In this paper, we propose V2I-Q, a V2I data offloading scheme with QoS provisioning by using three QoS functions: traffic classification, overload control and admission control. Traffic classification organizes the data into three priorities: high, medium and low. Overload control avoids overloading the RSUs to enable it to receive high priority data as soon as possible. Admission control allows RSU s to stop servicing existing vehicles offloading low priority data in order to receive high priority data from other vehicles. The performance evaluation shows that V2I-Q is able to offload more high priority data by incurring lower maximum offloading delay as compared to the traditional V2I data offloading schemes.
机译：在车辆网络中，当车辆进入其覆盖时，车辆通过车辆到基础设施（V2I）通信需要将需要卸载到路边单元（RSU）的各种类型的数据。由于RSU没有广泛部署，因此车辆与RSU具有间歇性连接。车辆携带到卸载的数据可能是需要尽快卸载到RSU的紧急数据（如附近事件或紧急健康数据的事故数据）。因此，考虑服务质量（QoS）供应在车辆网络中的数据卸载是必不可少的。在本文中，我们通过使用三个QoS功能提出了V2I-Q，V2I数据卸载方案，具有QoS配置：流量分类，过载控制和准入控制。流量分类将数据组织成三个优先事项：高，中等和低。过载控制避免过载RSU，使其能够尽快接收高优先级数据。准入控制允许RSU S停止维护卸载低优先级数据的现有车辆，以便从其他车辆接收高优先级数据。性能评估表明，与传统的V2I数据卸载方案相比，V2I-Q能够通过导致更低的最大卸载延迟来卸载更高的优先级数据。

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