Location Based Services (LBS) will play a key role in the future development of the Galileo market, as they represent the ultimate synergy between communications and positioning technologies in order to deliver to the mass market a wide variety of new services. Examples of such services range from in-car guidance through to targeted advertising. This paper analyses the various requirements and ...

Location-based services evolved with the advancement in mobile technology and wireless technology. Researchers have studied location-based services in terms of privacy, trust, and user acceptance. Statistics suggest the percentage of location-based services users is still relatively low. Therefore, the main objective of this study was to gain a comprehensive and holistic understanding of the cr...

The advance in wireless networks and in positioning systems has led to the development of a new generation of mobile applications: locationbased services (LBS). LBS offer highly personalized services to users of mobile devices such as telephones, pagers, and PDAs (mobile users) based on their locations, user profiles and context information. The publish/subscribe paradigm is an information diss...

In this paper, we propose a novel client-side,multi-granularity caching scheme, called “Complementary Space Caching” (CS caching), for location-based services in mobile environments. Different from conventional data caching schemes that only cache a portion of dataset, CS caching maintains a global view of the whole dataset. Different portions of this view are cached in varied granularity based...

In this paper we give an overview of the existing and upcoming positioning methods in the mobile environment. With the advent of mobile technologies, increased usage and expansion of mobile devices, mobile services and applications, among them also the so called location-based services, are gaining an increased amount of attention. The user context is an important element of personalization of ...

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...

to make them geometrically interoperable with datasets of a higher absolute positional accuracy. To date most PAI programs were implemented as coordinated programs. These programs usually focused on the improvement of a particular dataset and were focused on the individual requirements for geometric interoperability of this dataset with those of a higher positional accuracy. In the future the d...

Abstract. As location-based applications become part of our everyday life, ranging from traffic prediction systems to services over mobile phones providing us with information about our surroundings, the call for more semantics and accurate services is emerging. In this work, we analyze and register the data semantics of Location-based Services (LBS). Initially, we categorize LBS data according...

In this paper we outline the security requirements for any infrastructure that facilitates secure location based services over the Internet. We describe an architecture that allows the provisioning of location based services, and consider security requirements for guaranteeing privacy to end users.

This work examines the importance of utilising context and spatial disciplines as a complementary theoretical reference in the development of location-aware applications for the mobile Internet. It describes the development of a WAP prototype of an electronic tourist guide whose concept makes use of these disciplines and of the knowledge on design for small displays. It also discusses usability...