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首页> 外文会议>NSF Workshop on an Infrastructure for Mobile and Wireless Systems IMWS 2001, Oct 15, 2001, Scottsdale, AZ >Modeling Moving Objects for Location Based Services
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Modeling Moving Objects for Location Based Services

机译：为基于位置的服务建模移动对象

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As prices of basic enabling equipment like smart cell phones, hand holds, wireless modems, and GPS devices continue to drop rapidly, International Data Corp (IDC) predicts that the number of wireless subscribers worldwide will soar to 1.1 billion in 2003. Spurred by the combination of expensive new location-based infrastructure and an enormous market of mobile users, companies will roll out new wireless applications to re-coop their technology investments and increase customer loyalty and switching costs. These applications are collectively called location-based services. In this position paper we outline a novel and comprehensive model for moving objects in location based services. The model is different than other models proposed in the literature in the sense that is captures the spatial, temporal, and uncertain aspects of the location of a moving object. These aspects are captured in the concept of a trajectory. We argue that the existing prevalent model in industry, point location management, has severe drawbacks, and explain why our trajectory model solves these problems. We also outline a set of operators to access the trajectories database.
机译：随着诸如智能手机，手持设备，无线调制解调器和GPS设备等基本使能设备的价格持续迅速下降，国际数据公司（IDC）预测，全球无线用户数量将在2003年猛增至11亿。结合昂贵的新的基于位置的基础结构和巨大的移动用户市场，公司将推出新的无线应用程序以重新应对其技术投资并提高客户忠诚度和交换成本。这些应用程序统称为基于位置的服务。在此立场文件中，我们概述了一种新颖的，全面的基于位置的服务中的移动对象模型。该模型在捕获移动对象位置的空间，时间和不确定方面的意义上不同于文献中提出的其他模型。这些方面都体现在轨迹的概念中。我们认为，行业中现有的流行模型（点位置管理）存在严重缺陷，并解释了为什么我们的轨迹模型可以解决这些问题。我们还概述了一组访问轨迹数据库的运算符。

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