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Service Oriented Architecture (SOA) is a promising approach for designing and developing mobile applications. However, SOA concepts need to be combined with mobile principles to fully accommodate their requirements. Previously, a metamodel called Ambient-SoaML has been defined, which combines the Service Oriented Architecture Modeling Language (SoaML) and Mobile Ambients concepts inspired from Ambient...
The explosive growth of location-detection devices, such as GPS (Global Positioning System), continuously increasing users' privacy threat in location-based services (LBSs). However, in order to enjoy such services, the user must precisely disclose his/her exact location to the LBS. So, it is a key challenge to efficiently preserve user's privacy while accessing LBS. For this, the existing method...
Location-Based Services (LBSs) are becoming popular due to the advances in mobile networks and positioning capabilities. When a user sends a query with his exact location to the LBS server, the server processes the query and returns Points of Interest (POIs) to the user. Providing user's exact location to the LBS server may lead revealing his private information to unauthorized parties (e.g., adversaries)...
With the advent of various context sensors on mobile devices, context-aware mobile computing becomes feasible and an essential technology for providing smart services. Consequently, there is an increasing demand for frameworks which provide efficient sensor monitoring and reasoning with sensed contexts. However, there remain a number of research issues; continuously monitoring contexts with less resource,...
Current mobile systems for assisted navigation have limited effectiveness in satisfying user needs. The information content supporting location-based service discovery and path calculation is usually shallow. Semantic-based technologies can allow to overcome these limitations, by exploiting more accurate and meaningful descriptions of locations, points of interest, road segments and environmental...
Web service consumption may account for a nonnegligible share of the energy that is consumed by mobile applications. Unawareness of the energy consumption characteristics of Web service-based applications during development may cause the battery of devices, e.g., smartphones, to run out more frequently. Compared to related exeprimental energy consumption studies, the work at hand is the first work...
Good quality of service for a video streaming application under time-varyingnetwork bandwidth capacity is often required in many real-world scenarios, e.g., streaming in a typical high-speed vehicular environment. However, developing the enabling algorithms and techniques have been proven tobe very challenging. Adaptive bitrate streaming methodcan detect a user's network bandwidth availability in...
Service compositions in dynamic ad hoc environments face frequent changes in the network and service topology. Late service binding is a way to adapt to runtime changes but requires additional communication over error-prone and energy-constrained networks. In particular, synchronising parallel service flows relies on steady message exchange when mutually unknown service providers have to agree on...
Web services continue to gain an increased popularity in the Information and Telecommunication sector. However, despite the recent advancements in mobile devices and wireless technology, direct implementation of SOAP-based Web Services on mobile devices is still a challenge due to the fact that mobile devices are still resources-constrained compared to stationary dedicated servers and workstations...
This paper describes iTrust over SMS, a peer-to-peer search andretrieval service for social networks of mobile devices. iTrust overSMS enables mobile devices to collaborate with other mobile devices to distribute, search for, and retrieve information using SMS. With iTrust over SMS, there is no centralized search engine or centralized control and, thus, iTrust over SMS is less vulnerable to filtering...
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