Author(s)
Term
4. term
Education
Publication year
2003
Submitted on
2012-02-14
Abstract
This report documents the development of a push-based LBS framework. In a prior semester a LBS framework that supports pull-based LBSs was developed. This framework has been extended to support the development of push-based LBSs. Using the framework a prototype LBS, Online Aalborg Guide, is developed. In order to access the service an application, GPSOne, has been developed for Nokia 7650. A design criterion is to minimize the client''s number of position updates to the server. This is achieved by letting the client download data based on the location and preferences of the user. This way the client can operate on data relevant to the user. Another design issue that needs to be handled is the limited CPU power and storage capacity on the client. Since only a part of the data is stored at the client, this frees space, which can be used for other purposes, such as storing map images. The client application caches map images, so maps does not have to be fetched from the Internet every time. This reduces the network usage and increases the performance of the client application. A model for storing time-related information is developed and used to deliver advertisements based on time and location.
Documents
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