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Opportunistic WiFi offloading in vehicular environment: A queueing analysis

机译:车载环境中的机会性WiFi卸载:排队分析

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In this paper, we present an analytical framework for offloading cellular traffic by outdoor WiFi network in the vehicular environment. Specifically, we consider a generic vehicular user with Poisson data service arrivals to download/upload data from/to the Internet through the cost-effective WiFi network (want-to) or the cellular network providing full service coverage (have-to). Under this scenario, the WiFi offloading performance, characterized by offloading effectiveness, is analyzed in terms of desired average service delay which is the average time the data services can be deferred for WiFi availability. We establish an explicit relation between offloading effectiveness and average service delay by an M/G/l/K queueing model, and the tradeoff between the two is examined. We validate our analytical framework through simulations based on a VANET simulation tool VANETMobisim and real map data sets. Our analytical framework should be valuable for providing offloading guidelines to both vehicular users and network operators.
机译:在本文中,我们提出了一种分析框架,用于在车辆环境中通过户外WiFi网络卸载蜂窝流量。具体而言,我们考虑一个普通的车辆用户,通过经济高效的WiFi网络(Want-to)或提供完整服务覆盖(具有)的蜂窝网络,向互联网下载/上传/上传数据在这种情况下,根据所需的平均服务延迟,分析了卸载效果的WiFi卸载性能,这是可以推迟数据服务的平均时间。我们通过M / G / L / K排队模型建立了卸载效率和平均服务延迟之间的明确关系,检查了两者之间的权衡。我们通过基于VANET仿真工具VANETMOBISIM和实际地图数据集来验证我们的分析框架。我们的分析框架应该有助于为车辆用户和网络运营商提供卸载指南。

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