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Increased availability of wearable devices, smart phones establishes a platform for designing innovative distributed crowd sourcing mobile applications. These applications can take advantage of computation offloading to augment the constrained resources and unavailability of required context on single mobile device. ContextMete is an offloading architecture that execute such applications across the...
Cloud Radio Access Network (C-RAN) is a novel mobile network architecture that brings baseband processing units (BBUs) of a set of base stations into a central server keeping only remote radio heads (RRHs) at the cell sites. Because of their limited resources, running sophisticated applications on mobile handsets could result in poor performances and shortened battery lifetime. One promising solution...
An original architecture for production and usage of modal linguistic summaries in IoT contexts and domains is presented. The underlying research takes into account basic features of real IoT contexts and tries to map them effectively into a set of functional requirements. The architecture is strongly influenced and supported by original models of natural language processing, developed interactive...
eHealth technology can bring about many benefits for patients, health professionals, and institutions by providing faster, safer, and better healthcare services through the integration of Information and Communication Technologies (ICTs) with eHealth. We believe the success of the next generation of healthcare services requires advances in modern computing to support truly intelligent, instrumental...
This paper aims to specify strategies for learning scenarios that incorporate ubiquitous features to support pedagogical practice. Thus, the development aims to verify if the resources of technology with context awareness promote significant changes in teaching practice, and can impact positively or not the effectiveness of learning and engagement of learners. In this regard, a reference ubiquitous...
The widespread use of mobile devices such as smartphones and tablets is flanked by an ever increasing supply of mobile applications. Along with this trend, expectations and requirements of users rise as well. For example, users do not want to compromise on comfortable daily routines as available on desktop computers. However, an intrinsic characteristic of mobile devices is their limited availability...
Even providing several benefits and facilities with regard to teaching and learning, the development of mobile learning environments present problems and challenges that must be investigated, especially with respect to the definition and adoption of architectural patterns. Indeed, most of these environments are built in an isolated way, having their own architectures and structures, which can negatively...
Offering upper-level courses for the population that lives in remote areas, like the Amazon, is a huge challenge due to the difficulties of access and the low development level. To address this challenge, the Center for Distance Education (CDE) in Federal University of Amazonas, implemented an educational project that provides distance courses in graduate and undergraduate degree in these places using...
The discovery process has become an important task in the web service life cycle as the number of Mobile Web Services (MWS) has increased nowadays. However, discovering relevant MWS that can match a service request with the service offered has remained a major hindrance. The challenges are concerning the web service discovery with the limitation of mobile devices related to performance. On the other...
The applications in Ubiquitous Computing (UbiComp) environments must be aware of their contexts of interest and adapt to changes in them. Thus, a major research challenge in the area of UbiComp is related to context awareness. Considering the high distribution, heterogeneity, dynamism, and mobility of ubiquitous environments, this paper presents an architecture for context awareness, named UbiC (Ubiquitous...
Along the last decade, organizations have developed BPM (Business Process Management) as a methodology to manage their own Business Processes, with a consequent evolution in the involved systems. Different technical issues such as high availability and growing connectivity, and also economical aspects generated by development and maintenance costs have guided a big number of organizations to choose...
With the rapid development of mobile cloud computing, the identity authentication has become more and more important. but most of the authentication methods were authenticating device rather than users. Context aware information, such as, operational context, personal context, spatial context, and environmental context, can provide users with their really needed services without any explicit requests...
One important field of application of mobile computing systems is that of supporting online learning teams working together to accomplish a common learning goal. The traditional web-based online learning systems used to support online teams are being extended to support mobile clients and thus many of the features of collaborative learning should also be available to mobile clients. In this work,...
This paper presents an architecture proposal for mobile services. It covers server-side and terminal-side components for the easy creation, provision and consumption of mobile services. The intrinsic characteristics of mobile services are reflected in this approach. Especially the role of the power user, that not only consumes mobile services but also modifies them or creates services of his own,...
Context is information that describes the situations in which computing, social and physical interactions take place. The complexity and scope of context information available for utilization by context-consuming applications, such as those executing on smart mobile devices, sensing and tracking platforms, etc. is growing with the increased integration of digital artifacts in smart environments. Similarly,...
In this paper, we present different acceleration concepts for the Robust Header Compression version 2 (ROHCv2) algorithms in Long Term Evolution (LTE) handsets. First, we explore the potential performance improvements and energy savings by adopting scratchpad memories at various sizes. Second, dedicated hardware accelerators with different data transfer modes are compared in terms of processing speed...
Location-based services (LBS) have become an immensely valuable source of real-time information and guidance. Nonetheless, the potential abuse of users' sensitive personal data by an LBS server is evolving into a serious concern. Privacy concerns in LBS exist on two fronts: location privacy and query privacy. In this paper we investigate issues related to query privacy. In particular, we aim to prevent...
Mobile devices like PDAs or mobile phones have become widespread. Similarly network functionality like GSM, Bluetooth or WLAN has become a standard. Nevertheless, not many applications take mobility into account. An application and its communication component are tightly coupled and the applications assume that network behavior does not change. Here in this project we propose and implement a new component...
Thanks to the embedded sensors providing in mobile devices will revolutionize the way to carry out with. Mobile devices provide a set of embedded sensors, such as accelerometer, digital compass, gyroscope, GPS, microphone, and camera. Another point to consider, is that mobile devices are easily programmable since an API was included by the OS companies. This paper aims to describe a distributed architecture,...
Mobile devices like PDAs or mobile phones have become widespread. Similarly network functionality like GSM, Bluetooth or WLAN has become a standard. Nevertheless, not many applications take mobility into account. An application and its communication component are tightly coupled and the application assumes that network behavior does not change. Here in this paper we propose a new lightweight architecture...
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