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As a step towards mobile and ubiquitous computing, the TRAMP Real-time Application Mobility Platform (TRAMP) enables secure and user-friendly migration of multimedia application components. The motivating factors are device and user mobiliy, i.e., to let the user determine where application components should execute at all times. In order to organize and locate roaming devices, a decentralized peer-to-peer...
A hospital's mobile nursing cart can collect clinical data via Wi-Fi networks and save data in the server side. This service not only provides better medical care, but also enhances staff productivity. However, the coverage of Wi-Fi is limited and signal dead ends will result in wireless disconnection. This problem can be solved by switching between Wi-Fi and 3G. The physical connection must be disconnected...
Developing system software for ubiquitous computing makes consideration of numerous requirements necessary. This is primarily due to the dynamic, mobile, unpredictable and heterogeneous environment of ubiquitous computing systems. Middleware provide solutions to common tasks in ubiquitous computing, e.g. communication, discovery, deployment, personalisation, group management etc.
Recently, context aware service has become one of the most promising topics for ubiquitous computing. In this study, we focus on developing a context aware framework based on the OSGi model to automatically provide appropriate information and services for users in a smart home environment. A middleware for integrating home services through a reasoning system is developed. By using JESS Markup Language...
Context-awareness is a vital requirement in building valuable and capable adaptive systems. Context-aware ubiquitous computing focuses on the use of context of users, devices, environment, etc in order to offer services essential for a particular person, space and time. This paper provides a survey of context-aware middleware architectures. An overview of each middleware is provided, along with the...
This paper describes a middleware intended to support the development of mashup applications in mobile and ubiquitous learning environments. It is based on a framework that integrates different contextual information (e.g. geographic location, profile, history) and services (from e-learning platforms or other learning tools). The integration of the services into the middleware is carried out through...
This paper presents an open testbed for studying the utilization of pervasive computing infrastructure in a city center. It comprises of different types of wireless networks, large public displays, middleware resources and monitoring tools. A set of examples demonstrating the applicability of the testbed in evaluating technology pilots and prototyping new services in authentic setting are presented...
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...
A new context management framework, which supports the interaction between different domain context managers, is proposed. Two different context producer-consumer patterns are defined to support context-aware applications. To deal with the mobile entity problem in cross-domain context sharing, a transparent query mechanism that enables applications to obtain context information about mobile entities...
With the important advent of multimedia services and the ubiquity of computing environments, the concept of context-awareness in services access and provisioning is getting crucial. Services, especially the multimedia ones, must perform automatically actions/operations to adapt the delivered content to the user expectations and his environment capabilities, thus ensuring the best quality of experience...
We present a novel context acquisition and management middleware for mobile phones based on Qt (C++ based cross-plattform API) for S60 called mSense. In our middleware, sensor nodes encapsulate platform level APIs for seamlessly accessing hardware sensors, simulated sensors or web services. Aggregators (channels) combine information from other nodes to generate new knowledge. For example, GPS, accelerometer...
Sensor nodes in ubiquitous sensor network (USN) environments are composed of many sensors and hardware components for various purposes and applications, such as service in the industrial field, the public administration sector, and in life services. A middleware is required for wireless sensors to treat a huge amount of information from sensor nodes. However, the use of a middleware and specialized...
Context-awareness and adaptation are key issues in mobile and ubiquitous computing. Applications on mobile devices use context information to adapt themselves to changing environments. User profiles play an important role in these systems as they serve as an individualization filter in a wide range of possible context adaptation parameters. In this paper we propose a modeling approach for the evolution...
We studied the middleware platform for USN (ubiquitous sensor network) for various types of sensor networks such as the Zigbee wireless sensor network (WSN), the CDMA cellular network, RFID and IP-USN based on the 6LowPAN. Our project is focused on sensor network abstraction for various USNs. We defined standard interfaces between USN middleware and USN networks as well as application services. We...
Pervasive and ubiquitous computing evolved tremendously and has become an integral part of many fields. This is widely attributed to their efficiency in integrating with everyday components and handling tasks in a faster and better way. As a result, technologies to facilitate their development, integration and security also evolved. Middleware is an essential component in this field and recently more...
A Web service in ubiquitous computing environments usually serves many consumers, with specific functional or nonfunctional requirements. Thus, Web service should be customized and easy to be separated into semantic logic. In this paper, we present our research on mobile Web service customization based on our previous work - SPBCA (semantic pattern-based context-aware) middleware. We exploit the tuple...
Monitoring of the sub-sea environment requires advanced sensor networks with both stationary and mobile nodes on the surface and underwater, each node playing a different role. The combination of mobile and stationary nodes, the loss of nodes due to harsh conditions, the difficult conditions for wireless sub-sea communication and the need for nodes to collaborate are all factors that require new approaches...
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...
Nowadays, many researches are geared towards RFID and mobile technology which are one of the core technologies for realizing ubiquitous computing. In Korea, mobile RFID network services are developed and operated by using mobile networks and mobile devices with a built-in RFID reader. In this paper, we propose a new method of applying RFID middleware based on ALE to mobile RFID network services. For...
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