Location-Based Services (LBS) are services which use geographical information, combined or not with the position of the mobile terminal in order to obtain and generate useful information to the users of mobile devices. There are several initiatives in the definition of standards which aim at increasing the interoperability among location-based services. Among the main initiatives we can mention...

The expansion of the web has reached outrageous proportions with the number of web communities existing and the number of those being created daily increasing dramatically. To parallel this phenomenon is the trend nowadays of mobile phone services. One of the most representative is the case of Greece, where in a period of five years about five million people subscribed for a telephone number fo...

This paper discusses and evaluates the design and the implementation of a Community-centric Mobile Service Environment (COMSE), where all services are developed with Web technologies. The service environment is built on a distributed communication platform that is implemented using a DHT-based peer-to-peer (P2P) protocol. The interaction between P2P overlay networks and Web-based services is re...

With the recent advent and widespread use of smart mobile devices, the flexibility and versatility offered by Service Oriented Architecture’s (SOA) makes it an ideal approach to use in the rapidly changing mobile environment. However, the mobile setting presents a set of new challenges that service discovery methods developed for nonmobile environments cannot address. The requirements a mobile ...

The Web Services are of a vital role in the domain of mobile networks for their utility in various applications of communications field. However there are more challenging issues of functionalities of mobile technology with the current Web based resources. The work in the present paper deals with architectural implementation methodologies of the mobile technology for the enhancement of utility ...

Mobile devices have the limited environment such as low process performance, small screen size, low network speed and restricted user interface. This situation prevented the use of diverse and rich desktop-based information and services because the user could use limited services in mobile telecommunication environment. Also, this demands that service providers should develop a separate web con...

Client software for modern service-oriented web architectures is often implemented as mobile code applets made available by service-providers. Protecting clients from malicious mobile code is therefore an important concern in these architectures; however, the burden of security enforcement is typically placed entirely on the client. This approach violates the service-oriented paradigm. A method...

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Due to advancements in mobile technology and connectivity, mobile devices have become fully-fledged web clients. At the same time, more and more Semantic Web data is becoming available, to a point where it becomes usable for various mobile application scenarios. However, most applications are limited to using pre-defined query endpoints in order to access Semantic Web data, which leaves a huge ...