Location based services for next generation wireless mobile networks

Document Type

Conference Proceeding

Publication Date

9-1-2003

Abstract

We study how wireless network can support location based services (LBS) to mobile users. We assume that each mobile is capable of self-geolocation using GPS and indoor geolocation [1]. The wireless network collects the geolocation information from mobiles and provides this information to application service so that the services can be custom-tailored for each mobile user. The main challenge in wireless network is to keep track of geolocation of mobile users so that the application service can maintain the quality of the service (QoS). In general, the quality of service depends on how often mobile terminals update their geolocation. Since geolocation update requires battery power and radio resource, optimizing the geolocation update frequency is critical. In this paper we present geolocation update schemes that minimize the update frequency while satisfying the QoS of application service. For case study, we consider location based traffic report service (LBS-TR) and location based navigation service (LBS-NS). In LBS-TR, mobile users who are about to enter heavily jammed high-ways are informed in a timely manner so that the mobile users can avoid traffic congestion. In LBS-NS, mobile users are provided with navigation instructions that are custom-tailored to the geolocation of the users. The granularity of navigation instruction changes as the user moves from high-way to local street and from local street into building complex.

Identifier

0041467734 (Scopus)

Publication Title

IEEE Vehicular Technology Conference

ISSN

07400551

First Page

1988

Last Page

1992

Issue

3

Volume

57

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