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To provide effective mobile services in spite of network disruption, context aware middleware services on mobile devices and application servers can provide services for continuation of applications, by managing mobile services, network connection, limited resources, and context information. In this paper, we propose context aware middleware services for disconnection tolerant mobile application services...
This paper presents a mobile middleware that solves interoperability problems occurred in VoIP protocols (SIP, H.323, Jingle and their different vendor implementations) and uses distributed shared objects to overcome scarce resource problem of mobile devices.
The constant advent of powerful mobile devices has raised the potential of building novel context-aware applications. These applications let the users enjoy a better experience by sensing their context and automating tasks that would otherwise require significant user attention. This paper presents two context-aware applications, built on top of the MUSIC middleware's context management framework...
Presence systems are widely used today to get information of user availability and their willingness to communicate. As presence and Unified Communications (UC) services are viewed as productivity enhancements within enterprises, the need to connect these services across enterprise WANs and MANs becomes more important. Adding to the availability to communicate is the growing use of mobile devices...
Two significant but independent trends in recent years are the popularity of social networking applications and the adoption of mobile devices, notably smart phones. The current generation of smart phones are pocket computers that, compared to their predecessors, are relatively well resourced. Existing support for social networking tends to take the form of Web-based applications that are accessed...
Although mobile devices are rich sources of context information, the distribution of context in mobile environments is often hindered by the limited battery life, and wireless connections with low bandwidth. In this paper, we present two different implementations that enable context distribution in mobile environments. The first solution relies on a presence service architecture and publish-subscribe...
Multimedia information systems have been developed into service-ware. With the paradigms of web services, service oriented architectures (SOA), and Web 2.0 widgets, multimedia has become truly ubiquitous. However, interoperability, scalability, reliability and security are arising challenges at mobile multimedia service development. This paper focuses on the analysis, design, development and evaluation...
This paper describes middleware that establishes a MANET environment with mobile devices and exchanges contents in the devices. The middleware also provides a sharing function as a common service among mobile devices.
Although the landscape of mobile devices is continuously evolving towards more powerful terminals, the limitations regarding processing power, memory capacity and speed, network connection and battery, are still present and at certain loads fail to satisfy the requirements of complex applications. Being always connected to the network offers a solution to this problem as the server infrastructure...
Content sharing and social networking are two activities that users now routinely engage in on a range of connected devices. However users have to face arcane configuration panels for setting up connectivity, heterogeneity in the human-machine interaction models, differences in devices' capabilities and a profusion of tools/services/applications to perform their tasks. Adding to this complexity is...
Cell phones are no longer merely used to make phone calls or to send short or multimedia messages. They more and more become information systems clients. Recent developments in the areas of mobile computing, wireless networks and information systems provide access to data at almost every place and anytime by using this kind of lightweight mobile device. But even though mobile clients support the Java...
The increasing user mobility and more and more powerful mobile devices changed the way services are used today, e.g., by taking the user's location into account. Indeed, service interaction models are also influenced by this development making the ad hoc composition of complementary functionalities possible. Here, particular challenges remain in the field of composing services that are hosted on different...
Today, mobile devices are capable of providing services instead of just being service consumers. These services deployed on mobile devices are known as MobileWeb Services (Mob-WS). In this paper, a middleware for long running Mob-WS that avoids the overheads of long durational synchronous Mob-WS in introduced. A concept and architecture of such asynchronous Mob-WS middleware is presented. Moreover,...
In recent years, integrating SIP with OSGi has become one of the important research topics in the communication between mobile and networked home devices. In this paper, the general architecture for combining OSGi and SIP is investigated and implementation issues with the communication middleware are discussed. The encapsulation of OSGi devices with SIP has been realized by the concept of "SIP...
Recent developments in mobile communication and small computing devices have had a tremendous impact on our societies. They have brought the dream of ubiquitous computing and communication closer to reality. In the near future the communication and computing devices enable mass-market scale ubiquitous services and applications. The main challenge is software that fulfils the needs of personalized,...
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