I1-5 - Sedma Nacionalna Konferencija so Me|unarodno U~estvo...

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MOBILE WEB SERVICES Ljupco Antovski 1 , Marjan Gusev 1 1 Ss. Cyril and Methodius University, Faculty of Natural Sciences and Mathematics, Institute of Informatics, Arhimedova b.b. PO Box 162, 1000 Skopje, Macedonia, anto@ii.edu.mk , marjan@ii.edu.mk Abstract – The Mobile Web Services framework enables the application of the Web services architecture, specifications, and tools to the problem of exposing mobile network services in the mass market of developers. Even though one cannot guarantee that his users will have phones that offer such features now, using data services along with a SOAP messaging library might be a common solution for deploying mobile clients in the future. Today there are on the market several working groups and solutions that consider the issue of mobile web services. Web Services and the advance mobile phones are two breakthroughs that can enable organizations to win the battles that must be fought if Pervasive Computing is to become a reality. Key words – web services, mobile phones, GSM, SOAP, Liberty, OMA, J2ME, .NET Compact. 1. INTRODUCTION With hundreds of Internet-enabled mobile devices, the mobile Internet is opening the door to a slew of new mobile applications and services that will assist users as they engage in time-critical, goal-driven tasks [5]. Yet today, the mobile commerce landscape is dominated by relatively simple infotainment services. Moving beyond these simple services requires overcoming the inherent input/output limitations of mobile devices through higher degrees of automation and the development of services that understand the context within which their users operate – e.g. their locations, the activities they are engaged in, which their friends and colleagues are as well as a number of other contextual attributes and preferences. The mobile network services become increasingly more sophisticated. The Web services architecture and its implementations evolve and mature. By integrating these technologies, consistent business models can be enabled on a broad array of endpoints. In order to make this integration happen at a technical level, mechanisms are required to expose and leverage existing mobile network services. The Mobile Web Services effort is to create an environment that enables the mobile industry to create products and services that meet customer needs in a way not currently practicable within the framework. 2. TECHNOLOGIES IN USE Majority of mobile operators operate over a GSM network. A GSM mobile network currently requires the use of a mobile terminal (a phone) containing a Subscriber Identity Module (SIM). The SIM, implemented through a small form-factor smart card, is used for authentication. The SIM authentication mechanism provides an especially secure critical link between the subscribers account and mobile network operator bills, and the services that are offered by the mobile network operator or third-party service providers, delivered over a trusted network and transmitted over a radio bearer to the mobile terminal. Main goal in bridging the IT and mobile worlds is to
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I1-5 - Sedma Nacionalna Konferencija so Me|unarodno U~estvo...

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