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首页> 外文会议>IEEE Annual International Conference on Cyber Technology in Automation, Control and Intelligent Systems >Processing directional continuous range queries for mobile objects on road networks
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Processing directional continuous range queries for mobile objects on road networks

机译：处理道路网络上移动对象的定向连续范围查询

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摘要

With the rapid development of wireless communication networks and smart mobile devices, people now can access global positioning system for localization and wireless networks at any time, almost any where. Traditional location-based services for range queries or k-nearest neighbors queries are omnidirectional, in which some query results are probably not interested to a user because they are not on the way to destination. Due to the prevalence of guiding systems and the advances of electronic technologies and wireless communications, most mobile objects on roads move along with the pre-determined paths provided by path planning systems. With the concept of “by the way”, there would be an increasing demand on queries for objects on their traveling paths. In this paper, we define the issue of directional continuous range query for mobile objects on road networks. To address this issue, we not only propose the system architecture of a road network but also provide approaches to determine the safe period in order to efficiently update the query result. We elaborate cases of when to exclude a mobile object from a query result and when to insert a mobile object into a query result. Our experiment results showed that the centralized processing directional continuous range queries has shorter average response time than the distributed one.
机译：随着无线通信网络和智能移动设备的飞速发展，人们现在可以随时随地访问全球定位系统以进行本地化和无线网络连接。用于范围查询或k近邻查询的传统基于位置的服务是全向的，其中某些查询结果可能对用户不感兴趣，因为它们不在到达目的地的路上。由于制导系统的普及以及电子技术和无线通信的发展，道路上的大多数移动物体都与路径规划系统提供的预定路径一起移动。通过“顺便说一下”的概念，对在其行进路径上的物体的查询的需求将越来越大。在本文中，我们定义了道路网络上移动对象的定向连续范围查询的问题。为了解决这个问题，我们不仅提出了道路网络的系统架构，而且还提供了确定安全期的方法，以便有效地更新查询结果。我们详细说明了何时从查询结果中排除移动对象以及何时将移动对象插入查询结果中的情况。我们的实验结果表明，集中式处理定向连续范围查询的平均响应时间比分布式查询短。

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